Online Exam Preparation: MCQ Quiz!

1. How many chromosomes does a human cell contain?

6

26

46

66

In humans, each cell normally contains 23 pairs of chromosomes, for a total of 46. Twenty-two of these pairs, called autosomes, look the same in both males and females. The 23rd pair, the sex chromosomes, differ between males and females. Females have two copies of the X chromosome, while males have one X and one Y chromosome.

Explanation

In humans, each cell normally contains 23 pairs of chromosomes, for a total of 46. Twenty-two of these pairs, called autosomes, look the same in both males and females. The 23rd pair, the sex chromosomes, differ between males and females. Females have two copies of the X chromosome, while males have one X and one Y chromosome.

2. Milk openly placed for sometime becomes sour due to-

Carbonic acid

Lactic acid

Citric acid

Acetic acid

Milk contains a sugar called lactose. It also contains harmless bacteria called lactobacillus, which uses glucose for energy and creates lactic acid as a by-product. It is the lactic acid which makes the milk sour. The presence of lactic acid or lactate in milk is due to the fermentation of lactose caused mainly by lactic bacteria.

Explanation

Milk contains a sugar called lactose. It also contains harmless bacteria called lactobacillus, which uses glucose for energy and creates lactic acid as a by-product. It is the lactic acid which makes the milk sour. The presence of lactic acid or lactate in milk is due to the fermentation of lactose caused mainly by lactic bacteria.

3. Which of the following is a fossil fuel?

Alcohol

Ether

Water gas

Natural gas

Fossil fuels, including coal, oil and natural gas are currently the world’s primary energy sources.

Explanation

Fossil fuels, including coal, oil and natural gas are currently the world’s primary energy sources.

4. For the following question, find the odd numbers/letters/numbers from the given alternatives.

Red

Brown

Green

Yellow

Except brown all colours are related to rainbow.

Explanation

Except brown all colours are related to rainbow.

5. From the given alternative words, select the word which cannot be formed using the letters of the given word: PHOTOSYNTHETIC

THOSE

SCENT

PRONE

COTTON

PRONE; there is no ‘R’ in the give word.

Explanation

PRONE; there is no ‘R’ in the give word.

6. 3, 15, 35, 63, 99, ?

141

143

151

163

The difference between digits are + 12, + 20, + 28, + 36, + 44, so missing term is 99 + 44 = 143.

Explanation

The difference between digits are + 12, + 20, + 28, + 36, + 44, so missing term is 99 + 44 = 143.

7. Kane Stuart Williamson is a cricketer of ______.

South Africa

Australia

England

New Zealand

Kane Stuart Williamson is a New Zealand international cricketer who is currently the captain of the New Zealand national team.

Explanation

Kane Stuart Williamson is a New Zealand international cricketer who is currently the captain of the New Zealand national team.

8. In the following question, select the missing number from the given series.

81

361

289

225

Explanation

9. In which language, Lok Sabha debates are printed?

Hindi

English

Sanskrit

Both Hindi & English

Three versions of the Lok Sabha Debates are prepared, viz., a Hindi Version, an English Version and an Original Version. Out of these, Hindi and English versions, are printed and distributed among the members and others. The Original Version is kept in the Parliament Library, suitably bound, for purposes of record and reference only.

Explanation

Three versions of the Lok Sabha Debates are prepared, viz., a Hindi Version, an English Version and an Original Version. Out of these, Hindi and English versions, are printed and distributed among the members and others. The Original Version is kept in the Parliament Library, suitably bound, for purposes of record and reference only.

10. Arrange the given words in the sequence in which they occur in the dictionary. i. Collaborate ii. Constant iii. Correspondence iv. Combination

Iv, ii, i, iii

Iii, ii, iv, i

Iv, iii, i, ii

I, iv, ii, iii

11. In a certain code language, 'TAPERECORDER' is written as '!#&@^@?%^+@^'. How is 'REPORT' written in that code language?

^@&^%!

^@&%!

^@&%^!

^@%&^!

12. Which one of the following substances is used in the preservation of food stuff?

Citric Acid

Potassium Chloride

Sodium Benzoate

Sodium Chloride

The chemical formula of Sodium Benzoate is NaC7H5O2. It is widely used as food preservative.

Explanation

The chemical formula of Sodium Benzoate is NaC7H5O2. It is widely used as food preservative.

13. A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series. JLN, RTV, ZBD, ?

SUW

HJL

GHI

TVX

Explanation

14. A pungent smell often present near the urinals is due to-

Sulphur-di-oxide

Chlorine

Ammonia

Urea

Urine odour is caused by the presence of Ammonia. Urine is an aqueous solution of greater than 95% water.

Explanation

Urine odour is caused by the presence of Ammonia. Urine is an aqueous solution of greater than 95% water.

15. Which gas is used in fire extinguisher?

Carbon dioxide

Hydrogen

Oxygen

Sulphur dioxide

Carbon dioxide gas is used in a fire extinguisher to control small fires, often in emergency situations.

Explanation

Carbon dioxide gas is used in a fire extinguisher to control small fires, often in emergency situations.

16. Which one of the following gases, released from biogas plant is used as a fuel gas?

Butane

Propane

Methane

Ethane

Methane is the principal gas in biogas. It is also the main component of natural gas, a fossil fuel, can be used to replace natural gas in many applications including cooking, heating, steam production, etc.

Explanation

Methane is the principal gas in biogas. It is also the main component of natural gas, a fossil fuel, can be used to replace natural gas in many applications including cooking, heating, steam production, etc.

17. In a class the number of girls is 20% more than that of the boys. The strength of the class is 66. If 4 more girls are admitted to the class, the ratio of the number of boys to that of the girls is

1 : 2

1 : 4

3 : 4

3 : 5

Let the number of boys be x. then, number of girls= 120% of x=6x/5
∴x+6x/5=66⇒11x/5=66⇒x=(66×5)/11=30
Number of girls = 36
New number of girls = 40
Ratio of Boys & girls = 30 : 40 = 3: 4

Explanation

Let the number of boys be x. then, number of girls= 120% of x=6x/5
∴x+6x/5=66⇒11x/5=66⇒x=(66×5)/11=30
Number of girls = 36
New number of girls = 40
Ratio of Boys & girls = 30 : 40 = 3: 4

18. Which of the following river is known as Dakshin Ganga?

Brahmaputra

Ganga

Godavari

Krishna

Godavari river is known as Dakshin Ganga because it is the longest river of south India

Explanation

Godavari river is known as Dakshin Ganga because it is the longest river of south India

19. In a car battery, electrolyte substance used is-

Hydrochloric acid

Sulphuric acid

Nitric acid

Distilled water

Electrolyte substance used in a car battery is Sulphuric acid (H_2 SO_4 ). It is a strong acid.

Explanation

Electrolyte substance used in a car battery is Sulphuric acid (H_2 SO_4 ). It is a strong acid.

20. Which one of the following is used in the manufacture of soaps?

Vegetable oil

Mobil oil

Kerosene oil

Cutting oil

Soap is a combination of animal fat or plant oil and caustic soda. Many vegetable fats including olive oil, palm kernel oil and coconut oil are also used in soap making.

Explanation

Soap is a combination of animal fat or plant oil and caustic soda. Many vegetable fats including olive oil, palm kernel oil and coconut oil are also used in soap making.

21. Select the odd number pair from the given alternatives.

66-56

101-90

41-30

33-22

Sol.
66 – 56 = 10
101 – 90 =11
41 – 30 = 11
33 – 22 = 11

Explanation

Sol.
66 – 56 = 10
101 – 90 =11
41 – 30 = 11
33 – 22 = 11

22. In the following question, two statements are given each followed by two conclusions I and II. You have to consider the statements to be true even if they seem to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follows from the given statements. Statements: (I) Some scooters are trucks. (II) All trucks are trains. Conclusion: (I) Some scooters are trains. (II) No truck is a scooter.

Conclusion I follows

Conclusion II follows

Neither I nor II follows

Both I and II follows

Explanation

23. Arrange the following in the meaningful/logical order: (1) Foundation (2) Plastering (3) Building (4) Painting

1, 2, 3, 4

1, 3, 2, 4

3, 1, 2, 4

3, 1, 4, 2

Meaningful order of words.
1. Foundation 3. Building 2. Plastering 4. Painting

Explanation

Meaningful order of words.
1. Foundation 3. Building 2. Plastering 4. Painting

24. If the income of A is 10% more than that of B and the income of B is 20% less than that of C, then the incomes of A, B and C respectively are in the ratio

11 : 10 : 8

22 : 20 : 25

10 : 9 : 7

22 : 18 : 25

Let C’s income be Rs x. Then B’s income = 80% of Rs x=Rs (4x/5)
A’s income =110% of Rs (4x/5)=Rs (110/100 × 4x/5)=Rs (22x/25)
∴ A : B : C =22x/25:4x/5:x=22∶20∶25

Explanation

Let C’s income be Rs x. Then B’s income = 80% of Rs x=Rs (4x/5)
A’s income =110% of Rs (4x/5)=Rs (110/100 × 4x/5)=Rs (22x/25)
∴ A : B : C =22x/25:4x/5:x=22∶20∶25

25. Which physical quantity is measured in 'siemens'?

Electric potential

Electrical conductance

Magnetic ﬂux

Refractive index

The siemens is the derived unit of electric conductance, electric susceptance and electric admittance in the International System of Units (SI).

Explanation

The siemens is the derived unit of electric conductance, electric susceptance and electric admittance in the International System of Units (SI).

26. Which chemical substance is used for making rat poison?

Ethyl Alcohol

Methyl Isocyanate

Potassium Cyanide

Ethyl Isocyanide

Potassium Cyanide (KCN) or Zinc Phosphide is a highly toxic chemical used as a rodenticide a poison to kill the mouse.

Explanation

Potassium Cyanide (KCN) or Zinc Phosphide is a highly toxic chemical used as a rodenticide a poison to kill the mouse.

27. A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series. XV, BA, JK, ?

MP

VS

VZ

UD

Explanation

28. Bhartiya Janta Party was formed as a separate party in

1925

1955

1980

2001

The BJP is the successor party of the BJS, which merged itself into the Janata Party in 1977. The BJP was formed as a separate party in 1980 after internal differences in the Janata Party resulted in the collapse of the Janata government in 1979.

Explanation

The BJP is the successor party of the BJS, which merged itself into the Janata Party in 1977. The BJP was formed as a separate party in 1980 after internal differences in the Janata Party resulted in the collapse of the Janata government in 1979.

29. A man spends an average of Rs 1694.70 per month for the first 7 months and Rs 1810.50 per month for the next 5 months. His monthly salary if he saves Rs 3084.60 during the whole year is

Rs 2400

Rs 3000

Rs 1000

Rs 2000

Explanation

30. The energy, found in dry cell is-

Mechanic

Electric

Chemical

Electromagnetic

The best example of changing into electric energy from chemical energy is primary cells or batteries, the dry cell is also made up in this phenomenon.

Explanation

The best example of changing into electric energy from chemical energy is primary cells or batteries, the dry cell is also made up in this phenomenon.

31. Select the related word/letters/numbers from the given alternatives. Pesticide : Plant : : ? : ?

Medicine : Cure

Injection : Fever

Vaccination : Baby

Sinarest : Cold

Pesticide prevents plants from disease. Similarly, vaccination related to baby.

Explanation

Pesticide prevents plants from disease. Similarly, vaccination related to baby.

32. The digit in unit's place of the product 81 m 82 m 83 …………… m 89 is?

0

1

2

3

Unit digit = 1 × 2 × 3 × 4 × 5 × 6 × 7 × 8 × 9 = 0

Explanation

Unit digit = 1 × 2 × 3 × 4 × 5 × 6 × 7 × 8 × 9 = 0

33. The average salary per head of all workers of an institution is Rs. 60. The average salary per head of 12 officers is Rs. 400. The average salary per head on the rest is Rs. 56. Then, the total number of workers in the institution is

1030

1032

1062

1060

Explanation

34. What is the sum of first 19 odd numbers?

361

381

371

391

Sum of 1st n odd numbers = (n)²= (19)² = 361

Explanation

Sum of 1st n odd numbers = (n)²= (19)² = 361

35. If yesterday was Tuesday, then what day of the week will the tenth day from today be?

Friday

Sunday

Monday

Saturday

Explanation

36. Who wrote the book "The three Musketeers"?

EM Forster

Gunter Grass

Edward Luce

Alexandre Dumas

The Three Musketeers is a historical adventure novel written in 1844 by French author Alexandre Dumas.

Explanation

The Three Musketeers is a historical adventure novel written in 1844 by French author Alexandre Dumas.

37. A, B, C along completed a piece of work in 30, 50 and 70 days. The ratio of the salary of each day is 4 : 3 : 2 respectively. If the total income of A is Rs. 144, find total income of B.

Rs. 180

Rs. 185

Rs. 190

Rs. 195

Explanation

38. All of the following are the aims of Lok Adalat, except

Secure justice to the weaker sections

Mass disposal of the cases

Give the power to rule in the hands of the common man

Minimize cost and delay

Lok Adalat is one of the alternative dispute redressal mechanisms, it is a forum where disputes/cases pending in the court of law or at pre-litigation stage are settled/ compromised amicably. Lok Adalats have been given statutory status under the Legal Services Authorities Act, 1987.

Explanation

Lok Adalat is one of the alternative dispute redressal mechanisms, it is a forum where disputes/cases pending in the court of law or at pre-litigation stage are settled/ compromised amicably. Lok Adalats have been given statutory status under the Legal Services Authorities Act, 1987.

39. What is the value of 1² + 2² + …………. + 10²?

315

395

375

385

Sum of squares of 1st n natural numbers=n(n+1)(2n+1)/6
Sum=(10×11×21)/6=385

Explanation

Sum of squares of 1st n natural numbers=n(n+1)(2n+1)/6
Sum=(10×11×21)/6=385

40. The product of two number is 48. If one number equals "The number of wings of a bird plus 2 times the number of finger in your one hand divided by the number of wheels of a Tricycle." Then the other number is

9

10

12

18

Explanation

41. If in a three-digit number the last two digits' places are interchanged, a new number is formed which is greater than the original number by 45. What is the difference between the last two digits of that number?

9

8

6

5

Explanation

42. From a vessel containing 100 L of wine, 10 L are drawn out and an equal amount of water is added. From the mixture, 10 L is again drawn out and same quantity of water is added. What is the final ratio of wine to water?

80 : 20

90 : 10

91 : 9

81 : 19

Explanation

43. What is the maximum percentage discount (approximately) that a merchant can offer on his marked price so that he ends up selling at no profit or loss, if he initially marked his goods up by 40%?

60%

No Discount

33.5%

28.5%

Explanation

44. After interchanging ÷ and m, 12 and 18, which one of the following equation becomes correct?

(90 × 18) ÷ 12 = 60

(18 × 6) ÷ 12 = 2

(72 ÷ 18) × 12 = 72

(12 × 6) ÷ 18 = 36

(18 ÷ 6) × 12 = 36

Explanation

(18 ÷ 6) × 12 = 36

45. Introducing man to her husband, a woman said, "His brother's father is the only son of my grandfather." How is the woman related to this man?

Mother

Aunt

Sister

Can’t be determined.

My grandfather’s Only son-father, or uncle. If man is the son of father, the woman becomes sister. But if he is uncle, she becomes cousin.

Explanation

My grandfather’s Only son-father, or uncle. If man is the son of father, the woman becomes sister. But if he is uncle, she becomes cousin.

46. By selling an article at 80% of its marked price, a trader makes a loss of 10%. What will be the profit percentage if he sells it at 95% of its marked price?

6.9

5

5.9

12.5

Explanation

47. Sumitranandan Pant was a noted ______.

Boxer

Swimmer

Poet

Painter

Sumitranandan Pant was an Indian poet.

Explanation

Sumitranandan Pant was an Indian poet.

48. Brothers A and B had some savings in the ratio 4 : 5. They decided to buy a gift for their sister, sharing the cost in the ratio 3 : 4. After they bought, A spent two-third of his amount while B is left with Rs. 145. Then, the value of the gift is

Rs 70

Rs 105

Rs 140

Rs 175

Explanation

49. The taxi charges in a city contain fixed charges and additional charge/km. The fixed charge is for a distance of upto 5 km and additional charge/km there after. The charge for a distance of 10 km is Rs. 350 and for 25 km is Rs. 800. The charge for distance of 30 km is

Rs. 800

Rs. 750

Rs. 900

Rs. 950