PHYSICSExerciseMultiple Choice Questions

1.The size of the pupil of the eye is adjusted by

(a)cornea(b)retina

(c)Iris(d)Blind spot

2.When we enter a cinema hall, we cannot see properly for a short time. This is because

(a)Pupil does not open

(b)Pupil does not close

(c)Adjustment of the size of pupil takes some time

(d)None of these

3.When we go out in bright sunlight, the pupil of the eye

(a)Contracts

(b)Expands

(c)Sometimes contracts and sometimes, expands

(d)Neither contracts nor expands

4.Which cells respond to colour of light?

(a)Rod shaped cells

(b)Cone shaped cells

(c)Both types of cells

(d)Neither of the two

5.Eye lens is a

(a)Double convex lens

(b)Double concave lens

(c)Plano convex lens

(d)Plano concave lens

6.The property of persistence of vision is used in

(a)Short sightedness

(b)Long sightedness

(c)Cinematography

(d)Colour vision

7.Which of the following phenomena of light are involved in the formation of a rainbow?

(a)Reflection, refraction of a rainbow?

(b)Refraction, dispersion and total internal reflection

(c)Refraction, dispersion and internal reflection

(d)Dispersion, scattering and total internal reflection

8.Focal length of eye lens is

(a)Fixed

(b)Variable

(c)Sometimes fixed and sometimes variable

(d)Cannot say

9.Variable focal length of eye lens is responsible for

(a)Accommodation of eye(b)Persistence of vision

(c)Colour blindness(d)Least distance of distinct vision

10.Far point of normal human eye is

(a)25cm(b)25m

(c)500 m(d)infinity

11.Near point of normal human eye is

(a)25cm(b)25 mm

(c)25 m(d)Not fixed

12.When ciliary muscles are relaxed, focal length of the eye lens is

(a)Maximum(b)Minimum

(c)Neither maximum nor minimum(d)Cannot say

13.A concave lens of suitable focal length is used for correcting a

(a)Myopic eye(b)Hypermetropic eye

(c)Both (a ) and (b)(d)Neither (a) nor (b)

14.White light is made up of

(a)Seven colours(b)Six colours

(c)All colours(d)No colours

15.Splitting of white light into seven colours on passing through a glass prism is called

(a)Reflection(b)Refraction

(c)scattering(d)dispersion

16.Which of the colours of visible light has minimum wavelength?

(a)Violet(b)Red

(c)Yellow(d)Green

17.Which of the colour of visible light has minimum frequency?

(a)Violet(b)Red

(c)Yellow(d)Green

18.The broad wavelength range of visible spectrum is

(a)4000 8000A(b)2000A 4000A

(c)10000 2000A(d)None of these

19.Which colour has maximum speed in glass?

(a)Violet(b)Red

(c)Yellow(d)Green

20.For which colour, refractive index of glass is maximum?

(a)Red(b)Violet

(c)Green(d)Yellow

21.Which colour suffers least deviation on passing through a prism?

(a)Red(b)Violet

(c)Indigo(d)Blue

22.Scattering of light involves

(a)Reflection(b)Refraction

(c)diffraction(d)Change in direction of light

23.The amplitude of scattered lightly varies with wavelength as

(a) 1/4(b) 1/

(c) 1/2(d)2

24.The intensity of scattered light varies with amplitude () of scattered light as

(a) 2(b) 1/2

(c) (d) 1/

25.The intensity of scattered light varies inversely a nthpower of wavelength() of incident light where

(a)N= 2(b)N= 1

(c)N= 4(d)N= -4

26.Blue colour of sky is due to

(a)Scattering of light(b)Reflection of light

(c)Refraction of light(d)Diffraction of light

27.For Rayleigh elastic scattering size of scatterer (x) should be

(a)X= (b)X=

(c)X>>(d)X 7(d) pH = 143. pH is a measure of .. ions in a solution.(a) Hydrogen(c) Ammonium(b) Hydroxide(d) Carbonium44. On diluting solution of pH of 4, its pH will (a) Remains same(c) Decrease(b) Increase(d) Undergo a chemical change.45. The equation between an acid and a base is XOH + HY XY + H2O which of the following is the cation part of salt?(a) X(c) H(b) OH(d) Y46. Why should plaster of Paris be stored in a moisture proof container?(a) On mixing with water it changes into a hard solid(b) On mixing with water it becomes diluted(c) It evaporates in moisture(d) It breaks into its component in water.47. If pH of solution is 13, it means that it is(a) Weakly acidic(c) strongly acidic(b) Weakly basic(d) Strongly basic48. Which of the following metals can displace hydrogen from the aqueous solution of sodium hydroxide?(a) Mg(c) Al(b) Cu(d) Ag49. An aqueous solution with pH = zero is(a) Acidic(c) Neutral(b) Alkaline(d) Amphoteric50. Two solutions A and B were found to have pH value of 6 and 8 respectively. The inference which can be drawn is that(a) The acid strength of the solution A is higher than that of B(b) A is an acid while B is a base(c) Both are acid solutions(d) Both are base solutionsFILL IN THE BLANKS1. Plaster of Paris is obtained by heating ..2. Chemical formula of Plaster of Paris is 3. Chemical formula of bleaching powder is 4. Brine is a saturated solution of ..5. A salt is made when the . In an acid is replaced by a ..6. An acidic solution contains ions while a basic solution contain .. ions7. The weaker is the acid, greater is the base strength of its 8. When an acid react with a metal, . Gas is evolved and a corresponding .. is formed.9. Anhydrous sodium carbonate is commonly known as 10. Acid-base indicators are dyes or mixture of dyes which are used to indicate the presence of .. and ..11. Strong acids are essentially % ionised in aqueous solution whereas weak acids are ionised.12. When ammonium chloride is heated with caustic soda, the gas evolved is ..13. A base which is not a metallic oxide or hydroxide is 14. The colour of phenolphthalein in acidic medium is..15. ENO salt contains .. and is . In nature.TRUE OR FALSE1. The Hydronium ion is the strongest acid that can exist in aqueous solution.2. Acidic and basic solutions in water conduct electricity because they produce hydrogen and hydroxide ions respectively.3. Living beings carry out their metabolic activities at a very high pH.4. Mixing concentrated acids or bases with water is a highly endothermic reaction.5. The colour of caustic soda turns pink when phenolphthalein is added to it.6. Bleaching powder can not be used for disinfecting drinking water.7. An aqueous solution is one that has compound dissolved in water.8. Washing soda on reaction with dilute HCl liberates carbon dioxide in water.9. Dilution of an acid decreases H+ concentration.10. Calcium hydroxide is used to make soaps.11. Gastric juice contains hydrochloric acid.12. Vinegar contains citric acid.13. Carbonic acid is a weak acid.14. Basicity of acetic acid (CH3COOH) is four.15. Anhydrous sodium carbonate is known as washing soda.MATRIX MATCH TYPEIn this section, each question contains statements given in two columns which have to be matched. Statements (A, B, C, D) in Column-I have to be matched with statements (p, q, r, s) in Column-II. The answers to these questions have to be appropriately bubbled as illustrated in the following example. If the correct matches are A-q, A-r, B-p, B-s, C-r, C-s and D-q, then the correctly bubbled matrix will look like as shown.1. Column I Column II(A) HCl(p) Strong acid(B) HCN(q) Weak acid(C) NaOH(r) Weak Base(D) NH4OH(s) Strong base2. Column I Column II(A) KNO3(p) Nitric acid, silver hydroxide(B) AgNO3(q) Hydrochloric acid, Magnesium hydroxide(C) MgCl2(r) Carbonic acid, ammonium hydroxide(D) (NH4)2CO3(s) Nitric acid, Potassium hydroxide3. Column I Column II(A) Acid-base indicator(p) Na25O4(B) Acid used in soft drinks(q) Phenolphthalein(C) Salt formed by (r) Carbonic acidNeutralization of StrongAcid and weak base(D) Salt whose aqueous(s) CuSO4Solution is neutral4. Column I Column II (A) Vinegar (p) 6.8(B) Milk(q) 7.4(C) Human blood(r) 2.4 3.4(D) Lime water(s) 10.5

5. Column I Column IIAnhydrous saltWater of crystallization(A) CaSO4(p) 5H2O(B) CuSO4(q) 10H2O(C) FeSO4(r) 2H2O(D) Na2SO4(s) 7H2O

ASSERTION AND REASON TYPE

Directions: In each of the following questions, a statement of Assertion (A) is given followed by a corresponding statement of Reason (R) just below it. Of the statements, mark the correct answer as(a) If both Assertion and Reason are true and Reason is the correct explanation of assertion.(b) If both Assertion and reason are true but Reason is not the correct explanation of Assertion.(c) If Assertion is true but reason is false.(d) If Assertion is false but Reason is true.1. Assertion:Phenolphthalein is an acid- base indicator.Reason:In acid-base titration, it is used as an indicator.2. Assertion:pH of our body is about 7.4 and it remains almost constant inspite the variety of foods we eat.Reason: Blood is a buffer.3. Assertion:pH of ammonium nitrate solution is acidic.Reason: Solution of a salt of weak base and strong acid is acidic4. Assertion:pH = 7 signifies pure water.Reason: At this pH, [H+] = [OH-] = 10-7.5. Assertion: A solution of pH = 1 has hydrogen ion concentration 3 times than that of solution of pH = 3Reason: pH = log 1/ [H3O]6. Assertion: Strength of the acid or the base increases with dilution.Reason: Ionisation of an acid or a base increases with dilution.7. Assertion: When rain is accompanied by a thunderstorm, the collected rain water will have pH value slightly lower than that of rain water without thunderstorm.Reason: Temperature increases due to thunderstorm and so [H-] increases.8. Assertion: A buffer solution controls the change in pH value on addition of small amount of acid or base to it.Reason: pH value of buffer solution remains same on dilution or on keeping for long.9. Assertion: Acetic acid does not act as an acid in benzene solution.Reason: Benzene does not accept proton.

PASSAGE COMPREHENSIONPassage 1:The following reactions are occurring in a process used for manufacture of sodium carbonate.(A) (B) + CO2(B) + H2O (C)(C) + NH4Cl (D) (a gas which is soluble in water)(D) + H2O (E) solution(E) + CO2 (F)(F) + Nacl (G) + (H)(G) Na2CO + CO3 + H2OAnswer the following questions:1. The name of the process is(a) Solvay(c) Haber(b) Salt cake(d) Chlor-alkali2. (A) is(a) Ca(HCO3)2(c) CaCO3(b) NaHCO3(d) Ca(OH)23. (C) is(a) Ca(OH)2(c) CaO(b) NaOH(d) CaCO34. (E) is(a) NaOH(c) NH4OH(b) NaCl(d) NH4Cl5. (F) is(a) NH4HCO3(c) NaHCO3(b) Na2CO3(d) (NH4)2CO36. (G) is(a) NaCl(c) NH4OH(b) NH4Cl(d) NaHCO3

MATHSExerciseMultiple Choice Questions

1.Which of the following is a polynominal?

(a)+2(b)x +

(c)

(d)None of these

2.Which of the following is not a polynomial?

(a)3x2 -23x +3(b)

(c)

(d)

3.If p(y)= 3y4-5y3+y2+8, then p(-1) will be

(a)2(b)15

(c)17(d)-17

4.If p(x)= 2x2-3x+5, then p(-1) is equal to

(a)7(b)8

(c)9(d)10

5.Degree of polynomial y3-2y2-3y+1/2 is

(a)

(b)2

(c)3(d)

6The polynomials (ax3+3x2-3) and (2x3-5x+a) when divided by (x-4) leave the same remainder. The value of a is

(a)1(b)-1

(c)2(d)-2

7For what value of k is the polynomial 2x4+3x3+2kx2+6 exactly divisible by (x+2)?

(a)1(b)-1

(c)2(d)-2

8The sum and product of the zeroes of a quadratic polynomial are 2 and -15 respectively. The quadratic polynomial is

(a)x2-2x+15(b)x2-2x-15

(c)x2+2x+15(d)x2+2x+15

9If one zero of the quadratic polynomial 2x2-8x-m is , then the other zero is

(a)

(b)

-

(c)

(d)

10If and are the zeroes of the quadratic polynomial f(x) = x2-x-4, then the value of

(a)

(b)

(c)4(d)15

11.a2+b-ab-a is equal to

(a)(a-1) (b-1)(b)(a-2) (b-2)

(c)Ab(a-b)(d)(a-1)(a-b)

12.a(a-1)-b(b-1)is equal to

(a)(a-b)(a+b-1)(b)(a-1)(a-b+1)

(c)(a-b)(a+1)(d)None of these

13.If y are the zeros of the polynomial 2x3+x2-13x+6, then the value of y is

(a)3(b)-3

(c)

(d)

14.If y be the zeros of the polynomial p(x) such that (+ +y)=3, + y+y =-10 and y = -24. p(x) is

(a)x3+3x2-10x+24

(b)x3+3x2+10x-24

(c)x3-3x2-10x+24

(d)None of these

15.The value of k such that the quadratic polynomial x2-(k+6)x+2(2k+1) has sum of the zeroes as half of their product is

(a)2(b)3

(c)-5(d)5

16.If and are the zeroes of the quadratic polynomial f(t)=t2-4t+3, then the value of 43+34 is

(a)104(b)108

(c)112(d)5

17.If the polynomial (2x3+ax2+3x-5) and (x3+x2-2x+a)leave the same remainder when divided by (x-2), then the value of a is

(a)2(b)-2

(c)3(d)-3

18.One of the factors of (a2-b2)(c2-d2)-4abcd is

(a)ac-bd+bc+ad(b)ac-bd+bc-ad

(c)Cannot be determined

(d)None of these

19.The factors of 3 x2+11x+63 are

(a)(x-33 ) (3x+2)(b)(x-33 ) (3x-2)

(c)(x+33 ) (3x-2)(d)(x+33 ) (3x+2)

20303+203-503 is equal to

(a)0(b)-9000

(c)-90000(d)1

21If one zero of the polynomial f(x) = (k2+4)x2+13x+4k is reciprocal of the other then k is equal to

(a)2(b)-2

(c)1(d)-1

22If the sum of the zeros of the polynomial f(x)=2x3-3kx2+4x-5 is 6 then the value of k is

(a)2(b)4

(c)-2(d)-4

23.If the sum of the zeros of the polynomial f(x)=x3-3px2+qx-r are in A.P then

(a)2p3=pq-r(b)2p3=pq+r

(c)p3=pq-r(d)None of these

24If and are the zeros of the polynomial f(x) = x2-p(x+1)-c such that (a+1) (+1) =0 then c is equal to

(a)1(b)0

(c)-1(d)2

25If sum of the squares of zeroes of the quadratic polynomial f(x)=x2-8x+k is 40 the value of k is

(a)10(b)12

(c)14(d)16

26What must be subtracted from 4x4-2x3-6x2+x-5 so that the result is exactly divisible by 2x2+x-2?

(a)-3x - 5(b)3x - 5

(c)-3x + 5(d)3x 5

27The value of m, if (x- 2) is a factor of 2x3-5x2+5x+m is

(a)-1(b)0

(c)2(d)-6

28If the zeroes of the polynomialsf(x) = x3 - 3x2 +x +1 are a -b, a, a+b then

(a)a=-1, b= 2 (b)a=-1, b= 2

(c)a=-1, b= +2 (d)a=-2, b= 2

29If two zeroes of the polynomialx4-6x3-26x2+138x-35 are 2 +3 then the other zeroes are

(a)5,7(b)-5,7

(c)-5,-7(d)5,-7

30The graph of y=x3-4x cuts x-axis at (-2,0) (0,0) and (2,0). The zeroes of x3-4x are

(a)0,0,0(b)-2,2,2

(c)-2,0,2(d)-2,-2,2

31The graph of the polynomial p(x) cuts the x-axis at 2 places and touches it at 4 places. The number of zeroes of p(x) is

(a)2(b)6

(c)4(d)8

32If the sum of the zeroes of the quadratic polynomial f(t)= kt2+2t+3k is equal to their product, find the value of k.

(a)

(b)

(c)

(d)

33A polynomial of degree 7 is divided by a polynomial of degree 4. Degree of the quotient is

(a)Less than 3(b)3

(c)More than 3(d)More than 5

34The zeroes of the quadratic polynomial 100x2+50x+99 are

(a)Both negative(b)Both positive

(c)One positive, one negative(d)Both equal

35

If y are the zeroes of the polynomial f(x)= 2x3+6x2-4x+9 find the value of

(a)2/3(b)1/3

(c)4/3(d)Zero

More than One Answer Type

36If , are the zeroes of the polynomial f(x) = x2+x+1, then

(a)

(b)2+2=2

(c)+=-1(d)=-1

37If and are the zeroes of the quadratic polynomial f(x)=kx4+4x+4 such that a2+ 2 =24 then

(a)K=1(b)K=-1

(c)K=2/3(d)K=3

38If and are the zeroes of the polynomial f(x)=x2+5x+k such that a- = 1, then

(a)a2+ 2 =4(b)a2+ 2 =13

(c)K = 6(d)a =-1

39If ,, y are the zeroes of the polynomial f(x)=x3-12x2+39x-28 and ,, y are in A.P then

(a)a =1(b) =4

(c)y =1(d)2 = a+y

40If the polynomial 6x4+8x3+21x+7 is divided by another polynomial 3x2+4x+1, the remainder comes out to be ax+b, then

(a)a = 2(b)a = 1

(c)b= 1(d)b= 2

41X4+x3+8x2+ax+b is divided by x2+1 , if

(a)a =1(b)b =5

(c)a =3(d)b =7

42If , be the zeroes of the quadratic polynomial f(x) = x2+px+45 and (a - )2 =144 then p

(a)P =12(b)P= -12

(c)P = 18(d)P = -18

43If and are the zeroes of the quadratic polynomial p(x)= 4x2-5x-1 then

(a)2+2(b)

(c)

(d)2+2 =

44, ,y are the zeroes of the polynomial f(x)= x3-5x2-2x+24 such that = 12 then

(a) + = 7(b) - = 1

(c) - = -1(d)y = -2

45The polynomial f(x)= ax3+bx+c is divisible by the polynomial g(x) = x2+bx+c, c 0 , if

(a)ab = c(b)ab = 1

(c)ac = 2b(d)C= 2b2

FILL IN THE BLANKS1Polynomials of degree 1,2 and 3 are called............ , ................ and............. respectively.

2The zeroes of a polynomial p(x) are precisely the x-coordinates of the points, where the graph of y =p(x) intersects the............. axis.

3A quadratic polynomial can have at most 2 zeroes and a cubic polynomial can have at most................. zeroes.

4

If a and are the zeroes of the quadratic polynomial ax2+bx+c, then a+b = and a =

True or False1For polynomial p(x) and any non-zero polynomial g(x), there is a polynomial q(x) and r(x) such that p(x)= g(x)q(x)+ r(x) where r(x) =0 or degree r(x) < degree g(x)

2Sum of zeroes of quadratic polynomial = -coefficient of x / coefficient of x2

3Product of zeroes of quadratic polynomial = - constant term / coefficient of x2

43, -1, 1/3 are the zeroes of the cubic polynomial p(x)=3x3-5x2-11x-3.

5Zeroes of quadratic polynomial x2+7x+10 are 2 and -5

6Sum of zeroes of 2x2-8x+6 is -4

7If a and are the zeroes of the polynomial f(x) = x2-5x+k such that a- = 1, the value of k is 6.

8If zeroes of quadratic polynomial 2x2-8x-m are 5/2 and 3/2 respectively, then the value of m is 15/2.

9Polynomial 2x4+3x3-5x2+9x+1 is a quadratic polynomial

10If a, are the zeroes of the polynomial p(x) = x2-5x-1 then the value of a2+ a2 is - 15/16

Matrix Match TypeIn this section each question contains statements given in two columns which have to be matched. Statements (A,B,C,D) in column I have to be matched with statement (p,q,r,s) in column II.

1.Column -II gives zeroes ( not necessary all) of the polynomials given in column-I match them correctly

Column IColumn II

(A)4 - x2(p)7

(B)X3 - 2x2(q)-2

(C)6x2-3-7x(r)2

(D)-x+7(s)3/2

2.Column-II gives polynomial (quadratic) for zeroes given in column-I match the correctly.

Column IColumn II

(A)3 and -5(p)X2-25

(B)5+2 and 5-2(q)X2+2x-15

(C)-9 and 1/9(r)X2+(80/9)x-1

(D)5 and -5(s)X2-10x+23

3.Column-II gives remainder for division of polynomial given in column-I match them correctly.

Column IColumn II

(A)

(p)8

(B)

(q)x-5

(C)

(r)-33

(D)

(s)-2x+4

4.If a and are the zeroes of the polynomial 2x2-4x+5, then the value of column I with that of column II

Column IColumn II

(A)

(p)-6

(B)(a- )2(q)

(C)

(r)

(D)

(s)

Assertion & Reason QuestionDirection: In each of the following questions, a statement of Assertion (A) is given and a corresponding statement of reason (R) is given just below it. Of the four statements, given below make one as the correct answer. (a) If both Assertion and Reason are true and Reason is the correct explanation of Assertion.(b) If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.(c) if Assertion is true but reason is false(d) If both Assertion false and Reason is true.

1.Assertion :2+5x3/2+7x2 is not a polynomial.

Reason :Since it contains a term in which power of x is 3/2 which is not a non- negative integer.

2.Assertion :The zeroes of the polynomial 5x2-20x4+5x3+50x2-20x-40 is 5(x+1)2(x-2)3

Reason :x=r is a zero of a polynomial if it is a solution to the equation p(x)=0.

3Assertion :The factor of 3/2x2- 8x-35/2 is 1/2(x-7) (3x+5)

Reason :The factor is calculated by dividing the co-efficient by 2 and expression is obtained by splitting the middle term.

4Assertion :5x5+9x4+8x3+4 xs+1 are a biquadrate polynomial.

Reason :A polynomial of degree 4 is biquadratic polynomial.

Passage ComprehensionPassage 1:Sum of zeroes = a+ = -8 and product of zeroes = a = 6

1.From a polynomial whose zeroes are 1/a and 1/ is

(a)6x2+8x+1(b)6x2-8x-1

(c)6x2-4x+6(d)6x2-8x+1

2.From a polynomial whose zeroes are 1/a2 and 1/ 2 is

(a)X2-13x-1(b)36x2-52x+1

(c)X2+13x+9(d)36x2+52x-1

3.Form a polynomial whose zeroes are (a- ).

(a)x2-(8+210)x+1610(b)x2+(8+210)x-1610

(c)x2+(8+210)x+1610(d)x2+(8+210)x-1610

Subjective ProblemsVery Short Answer Type Questions1Find the zeroes of the quadratic polynomial 9x2-5 and verify the relation between the zeroes and its coefficients.

2Find the sum and product of the zeroes of the following quadratic polynomials. (i) 3x2+14x+8 (ii) x2-8(iii) x2-(c-ab)x-abc

3One zero of the quadratic polynomial 2x2-8x-m is 5/2 . Find the value of m

4If x=2 and x=0 are roots of the polynomials f(x)= 2x3-5x2+ax+b. Find the valuen of a and b

5If f(x)= x2-2x-3, then find the zeroes of f(x)

6Divide 3x3+x2+2x+5 by 1+2x+x2

7Show that x=2 is a zero of 2x3-13x2+17x+12 then find the value of f(-2) and f(3)

8If f(x)=2x3-13x2+17x+12 then find the value of f(-2) and f(3)

9f(x)=x2-10x+25. Find the zeroes of f(x).

10Show that x+1 and 2x-3 are factors of 2x3-9x2+x+12

Short Answer Type Questions1Find the zeroes of the quadratic polynomial 6x2-13x+6 and verify the relation between the zeroes and its coefficients.

2If a and be the zeroes of the polynomial p(x)=x2-5x+2, find the value of

3Check whether (x2-11x+28) is factor of the polynomial x3-12x2+39-28

4Find a quadratic polynomial whose sum of zeroes and product of zeroes are respectively

5Find a cubic polynomial with the sum of its zeroes , sum of the product of its zeroes taken two at a time and product of its zeroes as 2, -5 and -11 respectively

6Find the cubic polynomial with the sum, sum of the product of its zeroes taken two at a time and product of its zeroes as 0, -7 and -6 respectively.

7Find a and if x+1 and x+2 are factors of p(x)=x3+3x2-2ax+

8If ax3+bx+c has a factor of the form x2+px+1 show that a2-c2=ab

9Find the all the zeroes of the polynomial x3-5x2-16x+80, if of zeroes the polynomial are -4 and +4

10Obtain all the zeroes of x37x+6 if one of its zero is 1.

Long Answer Type Questions.1Which of the following correspond to the graph to a linear or a quadratic polynomial and find the number of zeroes of polynomial.

(i)(ii)

(iii)(iv)

(v)(vi)

(vii)(viii)

(ix)(x)

2If p and q are zeroes of the quadratic polynomial 2x2+2(m+n)x+m2+n2 form the quadratic polynomial whose zeroes are (p+q)2 and (p-q)2 .

3 If a and are the zeroes of the polynomial x2+4x+3 form the polynomial whose zeroes 1+/a and 1+a/

4Obtain all the zeroes of x4+2x3-7x2-8x+12, if two of its zeroes are 2 and -2.

5A polynomial f(x) with rational coefficients leaves number 15, when divided by x-3 and remainder 2x+1 when divided by (x-1)2. Find the remainder when f(x) is divided by (x-3)(x-1)2.

Integer Answer TypeThis section contains 5 questions. The answer to each of the questions is a single digit integer, ranging from 0 to 9.If the correct answer to question number to question number X, Y, Z, and W (say) are 6, 0, 9 and 2 respectively, then the correct darkening of bubbles will look like the following.1Twice the product of the zeroes of the polynomial 23x2-26x+161 is 14p.then p is

2Zeroes of a quadratic polynomial are in the ratio 2:3and their sum is 15. The sum of the digits in the product of zeroes of this polynomial is.

3The graph of a polynomial p(x) cut the x-axis at two places and touches it at the three places. The number of zeroes of p(x) is

4The sum and product of zeroes of p(x) =63x2-7x-9 are s and p respectively. Then 27s +14p equal

5If a, and y are zeroes of cubic polynomial x3+5x-2, then value of a2+2+y3 is

MCQ12345678910

dccdcabbca

11121314151617181920

dabcdbdadC

21222324252627282930

abaabadcbc

31323334353637383940

bdbcaa,c(b,c)(b,c,d)(a,b,c,d)(b,d)

4142434445

(a,d)(c,d)(a,c,d)(a,b,c,d)(b,c,d)

Fill in the blanks1234

MonomialBinomialTrinomialxthreea,a

True & False12345678910

TRUETRUEFALSEFALSEFALSEFALSETRUEFALSEFALSEFALSE

Matrix Match Type

1.A q,r B r; C s; D p

2.A q, B s; C r; D p

3.A s, B r; C q; D p .

4.A s, B p; C q; D r .

Assertion and reason type1234

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PassagePassage 1123

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BIOLOGYEXERCISEMultiple Choice Questions1.Name the hormone which is commonly termed birth hormone and milk ejecting hormone

(a)Oxytocin(b)Vasopressin

(c)Thyroxine(d)Luteinising hormone.

2.The directional movement or orientation of a plant part in response to light is termed

(a)Chemotropism(b)Phototropism

(c)Thigmotaxis(d)Photoperiodism

3.Name the plant hormone which is termed growth inhibitor.

(a)Auxin(b)Gibberellin

(c)Abscisic acid(d)Ethylene

4.Seismonastic movements are shown by which plant?

(a)Indian telegraph plant(b)touch-me-not plant

(c)Cucumber plant(d)Rose plant

5.Which plant hormone plays a role in apical dominance in plants?

(a)Auxin(b)Abscisic acid

(c)Ethylene(d)Gibberellin

6.Bolting in some plants is induced by artificial treatment of which plant hormone?

(a)Auxin(b)Ethylene

(c)Gibberellin(d)Abscisic acid

7.Name the organism which lacks nervous system

(a)Grasshopper(b)Hydra

(c)Human being(d)Plant

8.Name the part of nervous system which is generally involved in reflex action

(a)Brain(b)Glanglion

(c)Pons(d)Spinal cord

9.In plants, growth occurs by

(a)Permanent tissue(b)Meristematic tissue

(c)Ground substance(d)Bark

10.Cerebral hemispheres are the centers of

(a)Posture and equilibrium(b)Reflex actions

(c)Thinking and memory(d)all of these

11.Phytochrome pigment is present in

(a)stems(b)leaves

(c)fruits(d)flowers

12.Which of the following is not a reflex action?

(a)coughing(b)blinking of eyes

(c)knee-jerk(d)weeping

13.Medulla oblongata of hind brain controls

(a)rate of heat beat(b)equilibrium

(c)thinking(d)vision

14.Name the gland having both exocrine and endocrine regions

(a)thyroid(b)pancreas

(c)adrenal glandd)pituitary

15.Auxins inhibit the growth of

(a)apical buds(b)lateral axillary buds

(c)parthenocarpic development of fruits (d)roots of cuttings

16.Gibberellins were first isolated from

(a)algae(b)bacteria

(c)roots of higher plants(d)fungus

17.Cut leaves remain green for longer time when dipped in

(a)cytokinins(b)ethylene

(c)gibberellin(d)Auxins

18.Ethylene is a

(a)gaseous hormone(b)gaseous enzyme

(c)liquid hormone(d)solid hormone

19.Production of seedless fruits is referred to as

(a)parthenocarpy(b)parthenogenesis

(c)endocarpy(d)exocarpy

20.Phytohormone which is growth inhibitor is

(a)Abscisic acid(b)gibberellin

(c)Auxin(d)IAA

21.Which statement is not true about thyroxine?

(a)Iron is essential for the synthesis of thyroxine

(b)It regulates carbohydrates, protein and fat metabolism in the body

(c)Thyroid gland required iodine to synthesis thyroxine

(d)Thyroxine is also called thyroid hormone.

22.___________ is naturally occurring cytokinins.

(a)zeatin(b)kinin

(c)kinetic(d)ribotin

23.Cell elongation in plants is caused by

(a)Abscisic acid(b)gibberellins

(c)florigens(d)ethylene

24.Apical dominance in higher plants is due to

(a)balance between Auxins and cytokinins(b)enzyme activity

(c)supply of carbohydrates(d)Photoperiodism

25.Which of the following is not a ductless gland?

(a)adrenal(b)thyroid

(c)pituitary(d)liver

26.Which of the following effects of Auxins on plants is the basis for commercial application?

(a)callus formation(b)curvature of stem

(c)Induction of root formation in stem cuttings(d)All of these.

27.Apical dominance means

(a)Suppression of growth of apical buds due to present of axillary buds

(b)suppression of growth of axillary buds due to presence of apical bud

(c)stimulation of apical bud growth by removal of axillary buds

(d)inhibition of growth of axillary buds by removal of apical bud

28.Bending of stem towards the sunlight in plants is due to

(a)unequal distribution of Auxins

(b)uniform occurrence of gibberellins

(c)inhibition of cytokinins synthesis

(d)unequal distribution of cytokinins and gibberellins

29.Leaf fall can be induced by

(a)florigens(b)Auxins

(c)cytokinins(d)Abscisic acid

30.Which of the following is a cytokinin?

(a)leucine(b)Phytochrome

(c)ethylene(d)zeatin

31.Cytokinins are known to

(a)help in retention of chlorophyII

(b)promote formation of abscission layer

(c)inhibit cytoplasmic movement

(d)influence water transport

32.The effect of duration of light period on flowering is called

(a)phototropism(b)Photoperiodism

(c)photorespiration(d)photooxidation

33.Growth of the plant or plant part towards the earth is called

(a)hydrotropism(b)geotropism

(c)phototropism(d)thigmotropism

34.Opening and closing of flowers represent a kind of

(a)nastic movement (b)geotropism movement

(c)nutation(d)autonomic movement

35.The layer which separates leaves and fruits from plants is called as

(a)abscission(b)germinal

(c)hypogeal(d)epigeal

36.Cretinism in young children is due to lack of

(a)vitamin D(b)growth hormone

(c)thyroid hormones(d)insulin

37.The main function of parathyroid in body is to

(a)built teeth(b)form calcium compounds

(c)maintain proper amount of calcium and phosphorus in the blood(d)build bones

38.The fight or flight response is developed by hormones of the

(a)hypothalamus(b)adrenal medulla

(c)adrenal cortex(d)pancreas

39.Which part of human brain is more developed in comparison of others?

(a)cerebrum(b)cerebellum

(c)optic lobes(d)medulla oblongata

40.Pons varolii found on the ventral side of medulla oblongata connects two

(a)cerebral hemispheres(b)lateral lobes of cerebellum

(c)optic lobes(d)olfactory lobes

41.Two systems which exert opposite influence on the same organs or set of organs are

(a)endocrine and exocrine gland systems

(b)muscular and nervous systems

(c)endocrine and nervous systems

(d) sympathetic and parasympathetic systems

42.The chemical transmitter of nerve impulses is

(a)cholinesterase(b)hexokinase

(c)acetylcholine(d)acetyl co-A

43.Parasympathetic nervous system helps in

(a)dilation of pupils(b)increase in blood pressure

(c)increase in the rate of heart beat(d)contraction of smooth muscles of alimentary canal

44.Due to stimulation of sympathetic nervous system

(a)tear secretion increases(b)saliva secretion decreases

(c)sweat secretion increases(d)all of these

45.Calcitonin is secreted by ___________ gland

(a)parathyroid(b)thyroid

(c)adrenal(d)pancreas

46.pregnancy hormone is

(a)oxytocin(b)thyroid

(c)progesterone(d)testosterone

47.Islets of Langerhans secrete insulin and

(a)glucagon(b)epinephrine

(c)lipase(d)none of these

48.Which of the following is not an involuntary action?

(a)vomiting(b)salivation

(c)heart beat(d)chewing

49.The -cells of pancreas secrete

(a)insulin(b)thyroxine

(c)glucagon(d)None of these

50.The longest cell in human body is

(a)nerve cell(b)liver cell

(c)reproductive cell(d)muscle fibre

Fill in the Blanks

1. Neurons that carry information to an effector are called ___________ neurons.2. The chemicals stored in synaptic vesicles are called ____________3. The ______________ of the neuron secretes the neuron-transmitter substance.4. Touch me not shows _____________ movement.5. Temporal lobe of cerebrum is region for ___________ reception6. The functional junction between two neurons is called ____________7. Sneezing is a ____________8. The nervous system uses _____________ to transmit messages.9. A feedback mechanism regulates the action of the ___________10. Central nervous system includes _________ and ________True or False1.From a functional perspective, the nervous system provides slow, long-term coordination.2.Only the vertebrates have a nervous system.3.The propagation of a nerve impulse is due to change in the permeability of the nerve cell membrane that allow for a voltage difference across the membrane.4.The central nervous system consists of the brain and spinal cord.5.Functioning of various organs in uniformity is called coordination 6.Thyroxine regulates the blood-sugar.7.Brain is the structural and functional unit of nervous system8.Feeling hunger is a reflex action9.All animals have complex nervous system10.One-celled organisms can respond to stimuli.Assertion & Reason Questions

Directions : In each of the following questions, a statement of Assertion is given and a corresponding statement of Reason is given just below it. Of the four statements, given below, mark one as the correct answer1. If both Assertion and Reason are true and Reason is the correct explanation of assertion.1. If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.1. If Assertion is true but Reason is False.1. If both Assertion and Reason are false.1.Assertion :Nerve impulses are carried from gustatory cells of taste buds to the brain

Reason :Taste centre in brain is responsible for perceiving the taste sensation

2.Assertion :Taste buds are called the sense organs for olfaction

Reason :Taste buds bear olfactory receptor cells which get stimulated by certain chemical substances.

3.Assertion :The chemicals stored in the synaptic vesicles are termed as neurotransmitters

Reason :Synaptic vesicles release these chemicals in the synaptic cleft.

4.Assertion :Brain and spinal cord has a common covering

Reason :Both the brain and spinal cord possess meanings.

5.Assertion :Cerebrospinal fluid (CSF) is present throughout the central nervous system.

Reason :CSF has no such function

SUBJECTIVE QUESTIONSVery short Answer Type

1. Which part of the plant shows positive geotropism and why?2. Define the terms Photoperiodism3. What is parthenocarpy?4. What are tropic movements?5. Name three disorders which occur due to improper secretion of growth hormone from anterior lobe of pituitary.6. Name the endocrine gland which secretes neurohormones.7. Write the full form of ECG and name the instrument used for recording ECG of person.8. What is Phytohormone? Name any two Phytohormones.9. Why endocrine glands release their secretions into the blood?10. Why movements in plant are not as apparent as in case of animals?

SHORT ANSWER TYPE

1.Define hormones. Name the hormone secreted by thyroid. Write its function.2.(i) Draw the structure of a neuron and label the nucleus, dendrite, cell body, and axon on it.(ii)Name the part of neuron(a) Where information is acquired(b) Through which information travels as an electrical impulse.3.(i) What is (a) phototropism and(b) geotropism(ii)Mention the role of each of the following plant hormones.(a) Auxin(b) Abscisic acid4.Which animal or plant hormone is associated with the following?(i)Decrease sugar level of blood.(ii)Develop secondary sexual characters at puberty in boys.(i) Inhibits growth of plants(ii) Ripening of fruits.(iii) Dwarfism(iv) Goiter.5.(i) What are plant hormones? Give one example of a plant hormone that promotes growth.(ii)Name the parts labeled A, B and C in the diagram given below. Write one function of each part.

6.Give protective features of the nervous system.7.Discuss different topic movement.8.How do neurons transmit information?9.Give the difference between sensory and motor nerves.10.Give the characteristics of hormones.

LONG ANSWER TYPE1.(i)Improper secretion of growth hormone secreted by anterior lobe pituitary produces three important disorders. Name them. Also, give their cause.(ii)Posterior lobe of pituitary stores and secretes two hormones. Name these hormones and also give one important function of each of these hormones.2.List the functions of testosterone and estrogen.3.(i)Describe various parts of central nervous system in human beings.(ii)Give three functions of brain4.Define reflex arc and draw its labeled diagram.5.Nervous and hormonal systems together perform the function of control and coordination in human beings. Justify the statement.

ANSWER KEY

MCQ ANS

12345678910

abcbacddbc

11121314151617181920

bdabbdaaaa

21222324252627282930

aabadcbadd

31323334353637383940

abbaaccbab

41424344454647484950

dcddbcadaa

Fill in the Blanks

12345

MotorNeurotransmittersaxonnasticauditory

678910

synapsereflex actionelectrical impulseshormonesbrain; spinal cord

True or False

12345

FFTTT

678910

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Assertion and Reason

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