mock test paper – 01 hints and solutions

MOCK TEST PAPER – 01 HINTS AND SOLUTIONS

1. Prasar Bharati, India’s largest public broadcasting agency, has signed a Memorandum of Understanding (MoU) with Indian Institute of Technology, Kanpur for research collaboration in newly developing technologies and broadcasting-related fields in New Delhi.

2. Total salary during 2001 to 2006 = ` (1,500 + 2,600 + 3,200 + 4,100 + 5,000 + 5,200) = ` 21,600

\ Average salary during 2001 to 2006 = 21,600/6 = ` 3,600 3. 2 4

6 3

1 5

(1) Dice (option a) is not possible as face with ‘1’ and the face with ‘5’ are opposite to each other.

(2) Dice (option b) is not possible as face with ‘2’ and the face with ‘4’ are opposite to each other.

(3) Dice (option c) is possible. (4) Dice (option d) is not possible as face with ‘6’ and

face with ‘3’ are opposite to each other. Hence, dice (option c) can be formed. 4. He should confront his boss and have a brief

discussion about the same. They should come up with a solution together and if she fails to see reason then he should approach the authorities. Running away from a situation is not the answer and nor is harming some other person’s reputation for personal gains.

5. • An aromatic hydrocarbon is that which has atleast one benzene ring in which the carbon atoms are linked to one another by alternate single and double bonds.

• Examples of aromatic hydrocarbons include benzene, naphthalene, anthracene, etc.

• Ethane is not a aromatic hydrocarbon. It is a saturated hydrocarbon in which the carbon atoms are singly bonded with one another.

6. Let the bottle contains 17 units (11 + 6) of sweet drink.

Let ‘x’ units of this drink be replaced with water.

Quantity of water in the new mixture6

617

xx= - +

Quantity of syrup in the new mixture11

1117

x= -

Syrup & water will be in equal proportion if the above two quantities will be equal. i.e.,

6

617

111117

- + = -x

xx

Þ 102 – 6x + 17x = 187 – 11x Þ 22x = 85

Þ

8522

xÞ =

\ Part of the mixture replaced 85 / 22 5

17 22= =

7. 3x + y = 1 and px + 2y = 5, For no finite solutions, in equation ax + cy + e = 0

and bx + dy + f = 0,

a c eb d f

= ¹

3 12p

æ öÞ =ç ÷

è ø Þ p = 6 8. • Gaban is a Hindi novel written by Munshi

Premchand in the year 1931. • Munshi Premchand was a writer of Indian origin,

famous for his work in Hindu-Urdu literature. • His real name was Dhanpat Rai Shrivastava. 9. Statement 1 : ¼ of ball weigh = 5 kg Þ Weight of each ball = 20 kg Þ Total weight of 10 balls = 200 kg Statement 2 : Weight of 3 balls = Weight of 2 balls + 20 Þ Weight of one ball = 20 kg Þ Total weight of 10 balls = 200 kg \ Either statement 1 or 2 is sufficient. 10. Let the initial number of friends be ‘x’ Their total weight = 54x When one friend weighing 40 kg left the group,

total weight of the group = 55(x – 1) Hence, Þ 54x = 40 + 55(x – 1) Þ 55x – 54x = 55 – 40 Þ x = 15 \ There were 15 friends in the group. 11. Tallinn is the capital of Estonia.

Country Estonia

Capital Tallinn

President Kersti Kaljulaid

Prime Minister Jüri Ratas

Currency Euro

12. • Homologous series is described as a series of chemical compounds in which the same functional group is substituted for hydrogen in a carbon chain.

• This series will be differing with a successive member of CH2.

• Some examples are methane (CH4), ethane (C2H6), propane (C3H8) as they differ from each other by CH2 and they have the same functional group called alkanes (General formula CnH2n+2).

• As series differ by CH2, Atomic mass units of CH2 = Atomic mass of

carbon

1

Oswaal RRB–NTPC Test Series 2019-20

2

+ Atomic mass of Hydrogen. 12 + 2 = 14 (as there are 2 atoms of hydrogen,

therefore the atomic mass of H2 is taken as 2) 13. • Vigyan Samagam, India’s first mega science

exhibition, was first inaugurated in Mumbai. • It was inaugurated by Dr. Vijay Kumar Saraswat

at Nehru Science Centre, Mumbai. He is a member of NITI Aayog and is a renowned defense scientist in India.

• This exhibition is jointly organized by the Department of Science and Technology (DST), and the Department of Atomic Energy (DAE).

14. • Friction refers to the force that resists the relative motion of fluid layers, solid surfaces, and material elements sliding against each other.

• The SI unit of friction is Newton. There are various types of friction such as fluid friction, dry friction, and skin friction.

15. Article 32 (Right to Constitutional Remedies) of the Indian Constitution has been described as the ‘heart and soul’ of the Indian Constitution by Dr. B.R.Ambedkar. It gives the citizen the right to approach the Supreme Court or High Court to get resorted any of the fundamental rights in case of their violation.

16. We observe the following letter coding,

T E L E V I S I O N

U J I J O N M N F L

C H I C K E N P O X

A R N A D J L K F Z Now by substituting corresponding values from

the above two tables, we get,

V E L O C I T I E S

O J I F A N U N J M

17. • Mahesh Mangaonkar from India has succeeded for the second time in squash in the Sekisui Open 2019 that was played in Kriens, Switzerland.

• Sekisui Open is a Challenger tour event that is organized by PSA; a Professional Squash Association.

• It was Mahesh’s 8th PSA title that he grabbed beating third seed, Bernat Jaume of Spain in four games with a score of 11-9, 3-11, 11-5, and 11-5.

18. • Novak Djokovic of Serbia won his third Madrid Open title on May 12th 2019 beating Stefanos Tsitsipas of Greece with 6-3 and 6-4.

• Djokovic won the title in Madrid. He has now won 33 Masters 1000 titles; same as the number of titles Rafael Nadal has won, but five more than Roger Federer.

19. We observe the following pattern :

N U M E R A L S

O S P A W U S K

+1 –2 +3 –4 +5 –6 +7, –8

Hence, using the same pattern for FRACTION :F R A C T I O N

G P D Y Y C V F

+1 –2 +3 –4 +5 –6 +7, –8

Hence, GPDYYCVF is the correct answer. 20. • Mathematician Karen Uhlenbeck received the

2019 Abel Prize (sometimes referred as Noble Prize) in Mathematics for her work on “analysis, geometry and mathematical physics”.

• Abel Prize is named after Niels Henrik Abel, a Norwegian mathematician.

• Mathematician Karen Uhlenbeck is the first woman to win the Abel prize.

• She advocates gender equality in the field of science and mathematics.

21. • Pakistan successfully test-fired Shaheen-II, which is a surface-to-surface ballistic missile.

• It has an operational range of 1,500-2,000 kilometres that can bring major cities down.

• The launch was to show operational readiness of the Army Strategic Forces Command.

22. Karnataka is a part of India and India is a part of Asia.

Thus, the correct Venn diagram is as shown below:

Asia

India

Karnataka

23. Two or more sources are said to be coherent if they emit waves that have the same wavelength (or frequency) and amplitude and which maintain a constant phase difference.

24. In 100 years, there are 24 such numbers which are multiples of 4 i.e., which get divided by 4.

And in each leap year, we get 29th of February. Hence, in 100 consecutive years there 24 times the

29th of February had occurred. 25. Let, no. of years = x According to problem,

Þ 10,000 × 6 × 100

x = 16,000 – 10,000

Þ 600x = 6,000 Þ x = 10 \ In 10 years ` 10,000 will amount to ` 16,000. 26. According to statement 1, (X + Y) can build a wall in 6 days Þ (X + Y)’s 1 day’s work = 1/6 No result can be obtained from this

Mock Test Paper 01

3

According to statement 2, Let Y takes ‘a’ days to complete the work Þ Time taken by X to complete the work = (a + 5) days No result is obtained from this Now, Combining 1 and 2 we get, Þ 1 day’s work of X + 1 day’s work of Y = 1 day’s work of X + Y

Þ 1

51 1

6a a+æèç

öø÷+ =

Þ a2 + 5a = 12a + 30 Þ a2 – 7a – 30 = 0 Þ a2 – 10a + 3a – 30 = 0 Þ a(a – 10) + 3(a – 10) = 0 Þ (a – 10)(a + 3) = 0 Þ a = 10 [∵ no. of days cannot be negative] X alone can build the wall in = (a+5) days = 15 days \ Both 1 and 2 are required.

27. A=P 1100

træ ö+ç ÷è ø

320

A=12,500 1100

æ ö+ç ÷è ø

A = 12,500 115

3

+æèç

öø÷

A = 12 50065

3

, æèçöø÷

A = 21,600

28.

×2 ×2 ×2

+5 +10 +20 +4077

371772 36

Hence, 36 is the wrong number in the series. 29. Vectors are those living organisms that transmit

infectious diseases from animals to humans. Mosquitoes, sandflies, ticks, fleas, bugs, and snails are some best-known disease vectors

Disease Pathogen VectorMalaria Plasmodium

(protozoan)Female Anopheles mosquito

Filariasis (Elephantiasis)

Wuchereria bancrofti (nematode parasite)

Female Culex mosquito

Yellow fever Flavivirus fibricus (virus)

Aedes mosquito

30. Topper’s approach: Put a = 2 and b = 2 or a = 3 and b = 1 Detailed solution: (a + b)3 = a3 + b3 + 3ab(a + b) …(i) Given that, a + b = 4, putting this value of (a + b)

in eq. (i) \ 64 = a3 + b3 + 3ab(4) Þ a3 + b3 + 12ab – 64 = 0

31. Nightingale of India is Sarojini Naidu. Similarly, Lion of Punjab is Lala Lajpat Rai. 32. • Organic compounds that do not dissolve in

water but are soluble in non-polar solvents, like benzene, turpentine, etc., are called lipids.

• Fats and cholesterol are related to each other as these both are types of lipids.

• Cholesterol and fats differ in structure and function. While cholesterol is an important constituent of the cell membrane in animals, fats are macronutrients that are rich in energy.

33. Article 151 : • CAG reports of Union Accounts are to be

submitted to the President. • CAG reports of State Accounts are to be

submitted to the Governor. Article 149 : Duties and powers of the Comptroller

and Auditor General. Article 148 : CAG is established under this Article. 34. Present ages of Sai and Satheesh are respectively. According to question,

M 5N 4

Þ =

5N

M4

Þ =

Three years hence, the ratio of their ages will become 11 : 9,

(M+3) 11(N+3) 9

Þ =

Þ 9M + 27 = 11N + 33 Þ 9M – 11N = 6 Þ 9(5N/4) – 11N = 6 Þ 45N – 44N = 24 Þ N = 24 \ Satheesh’s present age is 24 years. 35. • Mechanical energy is a combination of kinetic

energy and potential energy. • Mechanical energy is defined as a sum of kinetic

energy and potential energy in an object that is utilized to do work.

• Mechanical energy is the form of energy that is related to the position and motion of an object.

• The flow of energy between two objects having a difference in their respective temperatures is termed as heat energy.

• The energy stored in the bonds of a chemical compound is termed as chemical energy.

• The energy that is stored in the nucleus of an atom is termed as nuclear energy. It is of two types : Nuclear fusion energy and Nuclear Fission energy.

36. Given, Þ ? = 122 + 345 – 1 × 1011 ÷ 337 Þ ? = 122 + 345 – 1 × 3 Þ ? = 122 + 345 – 3 Þ ? = 467 – 3 Þ ? = 464


4

37. Ratio of profit = Ratio of investment made Given, A, B and C enter into a partnership with a

certain capital in which A’s contribution is ` 10,000. If out of total profit of ₹ 1,000, A gets ` 500, B gets ` 300.

Let C’s capital be a. Profit of C = 1,000 – 500 – 300 = 200 Thus, 200 : 500 = a : 10,000 Þ a = ` 4000

38. Þ XX-

= - --

= - --

´++

æ

èçö

ø÷

= - -+

18 7

18 7

8 71

8 78 78 7

8 78 78

( )( )

( )( )

( )( )

( )--

æ

èçö

ø÷

= - - -

= -

7

8 7 8 7

2 7

∴

−

= − =

XX

12 7 28

22( )

39. Blackmailing Sahil for a promotion and not reporting the matter is unethical as well as a crime. So, Laksh should not take part in such activities. And not reporting a crime also makes the person as much responsible as the one involved. So, Laksh should report the money laundry scheme despite the influence that Sahil wields. Hence, neither is correct, making all other options invalid.

40. • Ice floats on water because its density is less than water.

• A water molecule is made of one Oxygen (O) atom and 2 Hydrogens (H) atoms.

• Its molecular formula is H2O. • In solid form (ice), the molecules form a crystal

lattice, by which the molecules are settled. • Therefore, ice has fewer molecules per unit

volume, in comparison to water, so it is less dense.

41. Discount percentage = 5% Then, Selling price = 14,250 Profit percentage = 20% Þ 20 = [(14,250 – C.P)/C.P] × 100 Þ C. P. = 71,250 – 5 C.P Þ C.P. = 11,875 The cost price of an article is ` 11,875 Given, Selling price = 12,000 \ Profit = 12,000 – 11,875 = ` 125 42. If a ∶ b = c ∶ d, then ‘d’ is the fourth proportional of

a, b and c Þ (x – 3) ∶ (3x – 1) = (x + 2) ∶ 1 Þ (x – 3)/(3x – 1) = (x + 2) Þ (x – 3) = (3x –1)(x + 2) Þ x – 3 = 3x2 + 6x – x – 2 Þ 3x2 + 5x – x – 2 + 3 = 0 Þ 3x2 + 4x + 1 = 0

Þ 3x2 + 3x + x + 1 = 0 Þ 3x(x + 1) + 1(x + 1) = 0 Þ (x + 1)(3x + 1) = 0 Þ x = – 1, – 1/3 43. The writer of RamCharitManas, Tulsidas, was

related to Akbar. Tulsidas began writing the Ramcharitmanas in Ayodhya in 1574 CE. During this period India was under the reign of Mughal emperor Akbar (1556 - 1605 CE).

44. 15 × 15 = 225 – 15 = 210, 26 × 26 = 676 – 26 = 650, Similarly, 29 × 29 = 841 – 29 = 812. 45. Average of the first 7 positive odd numbers

divisible by 5 First positive odd number which is divisible by 5 = 5 Second positive odd number which is divisible by

5 = 15 So on, seventh positive odd number which is

divisible by 5 = 65 So, the series is an A.P (5, 15, 25, 35, 45, 55, 65) We know, Average of any AP

(first term last term) (5 65) 70

352 2 2+ += = = =

46. Actual price of the electric bully = ` 4,100 Depreciation rate = 7% \ Its value after 1 year = 4,100 – 7% of 4,100 = 4,100 – 4,100 × (7/100) = ` 3,813 47. 5 + 8 = 13 7 + 6 = 13 9 + 4 = 13 3 + 4 = 7 In the given alternatives, the sum of digits in a

number is 13, except the number 34. Hence, 34 is the correct answer. 48. • The Tomb of Ibrahim Lodi is situated in Panipat,

Haryana. • Ibrahim Lodi was the last ruler of the Lodi

dynasty who was defeated and killed by Babur in the Battle of Panipat in 1526.

• This lead to the emergence of the Mughal Empire in India.

49. Required difference in bikes

15,000

(20 5) 2, 250100

= ´ - =

50. • The parts of flowers include petals, sepals, pistil, and stamens, of which petals are the prominent and the attractive part. The colour of the petal varies depending on the flower.

• Sepals are the leaf-like structures present on the bud.

• The stamen is the male part of the flower. • The pistil is the female part and the innermost

part of the flower.

Mock Test Paper 01

5

51. I. Ramesh sold 6,000 units of product Z each costing ` 40.

Total sales of product Z = 6,000 × 40 = ₹ 2,40,000 But we can’t say anything about the total sales

because there can be other products also that Ramesh sold.

II. Ramesh sold no other product. From the above statement, we know that there

is no other product sold by Ramesh. So, the total sales of product Z is the total sales of Ramesh.

So, both I and II are necessary. 52. Argument 2 state that, smiles, friends, family,

good talks, good sleep, and happy memories are all free. This is a strong argument because smiles, friends, family good talks, good sleep, and happy memories are the best things a person can have and can cherish, and also, they are free.

Argument 1 states that life gives us so many opportunities for free and yet most of us waste it. Smiles, friends and many other good things and opportunities are given for free but many of us do not cherish them and take them for granted, hence, we waste them.

Therefore, both the arguments 1 and 2 are strong. 53. • When Magnesium ribbon is burnt in the presence

of air, it burns with a white flame and produces white ash.

• This white ash is Magnesium oxide and it can be given as

Mg + O2 → 2MgO • When this White ash (Magnesium oxide) is

dissolved in water (H2O) it gives Magnesium Hydroxide.

MgO + H2O → Mg(OH)2

54. • Group 1 elements in the Periodic table are known as Alkali metals. • They have ns’ outermost configuration and belong to the s-block Elements. • They also have a strong tendency to donate their valence electrons in the outermost shell to form strong ionic

bonds. • It contains elements from Lithium (Li) to Francium (Fr).

H

Li Be

MgNa

K Ca Sc

YSrRb

Cs Ba

RaFr

Ti V

Al Si P S Cl Ar

Ne

He

I

At Rn

Xe

KrBr

Po

Te

Se

Tl

In

Ga

Hg

Cd

Zn

Au

Cu

Rh

Co

OsRe

Tc

MnCr

Mo

WTaHf

Zr Nb Ru

Fe

Ir

Ni

Pd

Pt

Ag

Ge

Sn

Pb Bi

Sb

As

B C N O F

Group 1

55. Arjun and Anurag complete a job in 6 days and 7 days respectively,

The ratio of Efficiency of Arjun and Anurag = 7 : 6, Total earning = ₹ 780

\ Arjun’s share 7780

13æ ö= ´ç ÷è ø

= ` 420

56. Statement I : A and B are sitting adjacent to each other. E is sitting third to the right of A but not at the extreme end.

A B E Hence, the statement I alone is not sufficient to

answer the question. Statement II : D is the neighbour of B and E.

E/B D E/B Hence, the statement II alone is not sufficient to

answer the question. On combining statement I and II together :

A B ED C

Hence, the data in both statements I and II together are necessary to answer the question.

57. In DDCB,

A

B

100

60°

CD45°

BC

tan 45DC

° =

BC = DC In DDCA,

AB BC

tan60DC+° =

100 BC3

BC+Þ =


6

BC( 3 1) 100Þ - =

100BC

( 3 1)Þ =

-

on Rationalizing,

BC 50( 3 1)m\ = +

58. We observe the following pattern :M A R K S

R F W P X

+5 +5 +5 +5 +5

Hence, using the same pattern for SHEET :

S H E E T

X M J J Y

+5 +5 +5 +5 +5

Hence, “XMJJY” is the correct answer.

59.

Blood consists of two Parts

Out of 100%

Consist of Function

Plasma 60% of blood

90% water, 0.9 salt, 0.1% glucose and other substances

Transportation of digested food, hormones, an excretory product from one part to another part of the body.

Blood corpuscle 40% of blood

Red blood cells Carry oxygen from the lungs to all cellsWhite blood cells Protect the body from disease

Blood Platelets Clotting of blood

Dirction : (60-62) (1) The teacher and Banker sat in extreme positions

with no one sitting to the left of a teacher.

Teacher Banker

(2) Banker and Engineer sat next to each other. D is engineer and F is banker.

Teacher BankerEngineer

D F

(3) C who is a Doctor and is a best friend of D and sat next to him.


D F

Doctor

C

(4) The teacher and Lawyer never sit together.


D F

Doctor

C

Manager Lawyer (5) B who is sitting in the extreme sat next to E.


D F

Doctor

C

Manager Lawyer

B E A

60. Given : Six colleagues: A, B, C, D, E, and F Profession : Doctor, Engineer, Lawyer, Banker,

Teacher, and Manager

From this, it is clear that A is the Lawyer.

Hence, A is the correct answer. 61. Given: Six colleagues: A, B, C, D, E and F Profession: Doctor, Engineer, Lawyer, Banker,

Teacher, and Manager From this, it is clear that B is a teacher and C is a

Doctor. Hence, both (1) and (2) is the correct answer. 62. Given: Six colleagues: A, B, C, D, E and F Profession: Doctor, Engineer, Lawyer, Banker,

Teacher, and Manager Hence, the doctor is sitting to the immediate right

of the Lawyer. 63. • Gun Powder is also known as black powder. • The major composition of Gunpowder includes

carbon, potassium nitrate, and sulphur. Hence, Potassium Nitrate, 2, is the correct answer.

• The standard composition of Gun powder is 75% potassium nitrate, 15% charcoal or carbon and 10% sulphur. The formula is well known and well accepted for ages as the one which will produce a powerful black powder.

• The sulphur and charcoal act as fuels while the potassium nitrate is an oxidizer.

64. On 22 March 2019, in football, India won the SAFF Women’s Championship for the fifth time in a row.

India defeated Nepal in the final match. India’s Sabitra Tamang and Indumathi Kathiresan

of Nepal were the top scorers of the tournament as both scored four-goal each.

Mock Test Paper 01

7

This was India’s 23rd straight victory in the championship since the inception of the tournament in 2010.

65. A Lawn roller makes 20 revolutions in one hour.

Revolution in 1 min = 2060

Revolutions in 25 min = 253

1revolution=2πradian

\ Radians it runs through in 25 minutes =50

3p

66.

Discipline Artists

Mohiniyattam Smitha Ranjan, Sunanda Nair, Bharati Shivaji, K Kalyanikutty

Veena Sundaram Balachander, R.vaidhya, Jayanti Kumaresh

Flute Pannalal Ghosh, Hariprasad Chaurasia, N Ramani, Ronu Majumdar

Bharatnatyam Leela Samson, Savitha Sastry, Rukmini Devi

Tabla Zakir Hussain, Alla Rakha, Rabi Shankar, Anindo Chatterjee

67. The jumbled words are : (1) EEHESC - CHEESE (2) REENAP - PANEER (3) RAECNT - NECTAR (4) TRYOHGU - YOGHURT All are milk products except NECTAR. Hence, NECTAR is the correct answer. 68. Distance covered = 90 km Let Krishna’s speed be A km/h

Þ Time taken = 90A

If he cycled 3 km slower every hour, he would have taken 5 more hours,

Þ Speed would have been = (A – 3)

Þ Time taken = ( )90

A 3-

Þ ( )90 90

5A 3 A

- =-

Þ 54 = A2 – 3A Þ A = 9 or A = –6 \ He cycled at 9 km/h. 69. • The Lepcha Tribe can be found in the state of

Sikkim. • The Lepcha Tribe is also called as ‘Rongkup’

which means children of God. • They are about 50,000 strong tribal community in

the state. • They regard the World’s third highest mountain

Kanchenjunga (8586 m) as their guardian deity. • The capital of Sikkim is Gangtok.

70. Let the equal side be b and base be a. Given that,

56a

b =

perimeter = b + b + a = 64

5 564

6 6a a

a+ + =

1664

6a =

a = 24 cm b = 20 cm Area of isosceles triangle

2 2 2 2

2

244 4 20 24

4 46 1600 576 6 32 192 cm

= - = ´ -

= ´ - = ´ =

ab a

71. We know that, Range = maximum value – minimum value = 29 – 16 = 13 Mode = maximum repeated value ∵ 18 is repeated 3 times. Mode = 18 \ Range and mode of the given data are 13 and 18

respectively. 72. Given, Diameter = 42 cm

diameter 42Radius( )= 21 cm

2 2r = =

2 2

2

22Total surfacearea 3 3 (21)

74,158cm

æ ö\ = p = ´ ´ç ÷è ø=

r

73. The average capacity of an adult urinary bladder

is up to two cups, or 500 ml of urine for two to five hours.

Once the bladder reaches its maximum capacity, it starts causing the feeling of discomfort and sometimes a slightly painful sensation too.

74. Let x + y be the speed of boat & current respectively According to first condition,

84 84x y x y+

+-

= 10

Let

1x y+

= m & 1

x yn

-=

So, 42m + 42n = 5 ...(i)

According to second condition,

7x y+

= 3

x y-

or, 7m = 3n ...(ii)

from equation (i) & (ii)


8

m = 128

and n = 1

12

Hence, x + y = 28 ...(iii)

and, x – y = 12 ...(iv)

Now, from equation (iii) & (iv)

y = 8 km/h 75. The following diagram shows the displacement of

X and Y,North

21 mX's ending

pointEast

5 m

10 mY's ending

point

South

Y

XWest

11 m

11 m

Hence, Y is 16 m towards South direction with respect to X.

76.

Name of Union Territory Lakshadweep

The administrator of Union Territory

Farooq Khan, IPS, (Retd.)

The capital of Union Territory

Kavaratti

Area 32 sq km

Population About 64 thousand (census 2011)

77. Given equation : 27 ÷ 9 – 7 + 4 = 14 + 4 ÷ 8 × 14 – 7 ÷ 8 × 8 Replacing + of RHS with – sign we get, 27 ÷ 9 – 7 + 4 = 14 – 4 ÷ 8 × 14 – 7 ÷ 8 × 8 3 – 7 + 4 = 14 – 1 ÷ 2 × 14 – 7 7 – 7 = 14 – 7 – 7 0 = 0 This satisfies the equation. Hence, the correct answer is + of RHS. 78. • The tendon is made up of dense fibrous

connective tissue composed of primarily collagenous fibres.

• Primary collagenous fibres is made up of bunches of collagen fibrils.

• Collagen fibrils are called basic units of a tendon. • Tendons occur at the end of skeletal muscles and

serve to attach them strongly to bones. • It is a modification of white fibrous tissue. 79. The pattern which is followed here is,

a b

c d

(a × d) = (b + c) In matrix 1 → 3 × 8 = 10 + 14 ⇒ 24 In matrix 2 → 11 × 6 = 33 + 33 ⇒ 66 Similarly, In matrix 3 → 9 × 9 =? + 80 Þ 81 – 80 =? Þ ? = 1 Hence, the correct answer is 1. 80. As, Wipro is a type of IT (Information Technology)

Company. Similarly, Facebook is a Social Networking Company. Hence, Social Networking is the correct answer. 81. In figure (X), one of the dots lies in the region

common to the ellipse and the square only and the other dot lies in the region common to all the geometrical shapes. Only figure (D) consists of both types of regions.

Hence, figure (d) is the correct one. 82. • Choleraspreadsthroughwater. • The bacterium that causes cholera spreads from

one person to another if the water has been contaminated by the faeces of an infected person.

• It is commonly encountered in poor countries or calamity and war-torn areas.

83. • The rate of change of velocity of the object per unit of time is called acceleration. Generally, it is considered as a vector quantity.

• The SI unit of velocity is m/s and of time is second.

• Hence, the SI unit for acceleration becomes m/s2. 84. • The element with the highest electron affinity

among halogens is Chlorine (Cl). • Chlorine, the group 17th element, has the

highest electron affinity and also called halogen that is represented by X.

• Chlorine is an electronegative element with one electron less than noble gas configuration and is bigger enough in size to gain an electron more easily.

• The outermost orbital of Chlorine is a 3p orbital. Since there is more space and the electrons in this orbital are inclined to share this space with an extra electron, therefore, chlorine has a higher electron affinity.

• Hence, Chlorine has the highest electron affinity among halogens in the periodic table.

85. The figure given in option B is the correct one. 86. • Kharchi Puja is a famous Hindu festival that

takes place in the Indian State of Tripura, in the month of July or August every year.

• During this puja, fourteen gods forming the dynasty deity of Tripuri people are worshipped.

• It is observed in Agartala in the temple premises of the fourteen gods.

87. • Oparin’s theory about ‘Origin of life’ is related to chemical evolution.

• Alexander Oparin was a Russian biochemist. • He proposed the theory of the origin of life on

Earth that postulated that the evolution started

Mock Test Paper 01

9

from carbon-based molecules in a primordial soup.

• He also contributed his effort to enzymology and helped to develop the foundations of industrial biochemistry in the USSR.

• Hence, we can say that Oparin’s theory about ‘Origin of life’ is associated with chemical evolution.

88. Given statements :F<A=P<R;H>M≥P Oncombining:H>M≥P=A>F Conclusions : I. F < M →True(asM≥P=A>F) II. H > F →True(asH>J≥P=F→ H > F) Therefore, both I and II are true. 89. • Morley-Minto Reforms was passed in the year

1909. It is also known as the Indian Councils Act 1909.

• It was passed in an attempt to broaden the area or scope of legislative councils, to placate the demands made by the moderates, and to increase the involvement of Indians in the governance.

90. Given, ? = sin 270°.cos 180° + cosec 60°.sec 30°

– tan 45°.cos 30° + cot 270°

Þ ? = (–1) (–1) + ( )2 2 31 0

23 3

æ öæ öæ ö - +ç ÷ç ÷ç ÷ ç ÷è øè ø è ø

Þ ? = 1 + 43

– 32

Þ ? = 73

– 3

2

Þ ? = (14 3 3)

6-

91. • The Battle of Chausa was fought in the year 1539. • The battle was fought between the Afghan, Sher

Shah Suri and the Mughal emperor, Humayun. It was won by Sher Shah Suri.

92. • Dolomite is an ore of Magnesium. The chemical formula for dolomite is CaMg(CO3)2.

• Ore is a naturally occurring mineral or rock from which metal can be extracted.

93. Sunil got 18th rank from the bottom and Raju is 5 ranks above Sunil. So, Raju’s rank from the bottom is 18 + 5 = 23rd.

Now as the class has 59 students, his rank from top is 59 – 23 = 36 + 1 = 37th.

So, Raju got 37th rank from the top. Hence, 37th is the correct answer. 94. • Narmada river originates from Amarkantak and

rises from the Maikal ranges. • Amarkantak is situated in the Shahdol district of

Madhya Pradesh, India. • Narmada river mainly flows in central India. 95. Unit digit of 21 = 2 Unit digit of 22 = 4 Unit digit of 23 = 8 Unit digit of 24 = 6

Unit digit of 25 = 2 Unit digit of 26 = 4 After every fourth multiplication of 2 the same unit

digit is repeated. Dividing 47 by 4 we get remainder 3 So, Unit digit of 247 will be equal to the unit digit

of 23

Unit digit of 247 = 8 Unit digit of 31 = 3 Unit digit of 32 = 9 Unit digit of 33 = 7 Unit digit of 34 = 1 Unit digit of 35 = 3 Unit digit of 36 = 9 As after every fourth multiplication of 3, the same

unit digit is repeated. Dividing 23 by 4 we get remainder 3 Unit digit of 323 will be equal to the unit digit of 33

Unit digit of 323 = 7 \ Unit digit of 247 × 323 = Unit digit of (8 × 7) = 6 96. The logic followed is :

A D F I K N P+ + + + + + → → → → → →3 2 3 2 3 2

Hence, the correct answer is P. 97. Student who can speak both languages = 28 + 30 – 40 = 18 \ Students who can speak only Telugu = 30 – 18 = 12 98. Student who can speak both languages = 28 + 30 – 40 = 18 \ Students who can speak only Tamil = 28 – 18 = 10 99. We will draw a family tree using the following

notations

MeaningSymbol inDiagram

Female

Male

Married

Couple

Siblings

Difference of

A Generation

As per the question : (1) A and B is a married couple (2) B is female (3) D is the only son of C, who is the brother of A.

So, A and C are brothers (4) E is the sister of D. E and D’s father is C (5) B is the daughter-in-law of F, whose husband

has died. So, F is the mother of A as F’s husband has died.


10

F

A BC

ED

Hence, Mother is correct answer. 100. We will draw a family tree using the following

notations

MeaningSymbol inDiagram

Female

Male

Married

Couple

Siblings

Difference of

A Generation

As per the question: (1) A and B is a married couple (2) B is female (3) D is the only son of C, who is the brother of A.

So, A and C are brothers (4) E is the sister of D. E and D’s father is C (5) B is the daughter-in-law of F, whose husband

has died. So, F is the mother of A as F’s husband has died.

F

A BC

ED

Hence, E is the niece of A.

mock test paper – 01 hints and solutions

Documents