Central Armed Forces (ACs) Questions with Answers – 2022

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  1. Which one of the following is the difference of the sum of cubes of first ten natural numbers and the sum of squares of first ten natural numbers?

Answer: 2640

 

  1. A person buys an item from a shop for which the shopkeeper offers a discount of 10% on the marked price. The person pays using an e-wallet which gives 10% cash back.  Which one of the following is the value of effective discount?

Answer: 19%

 

  1. A solid spherical ball made of iron is melted and two new balls are made whose diameters are in the ratio of 1:2. The ratio of the volume of the smaller new ball to the original ball is

Answer: 1:9

 

  1. Suppose a bank gives an interest of 10% per annum compounded annually for a fixed deposit for a period of two years. What should be the simple interest rate per annum if the maturity amount after two years is to remain the same?

Answer: 10.5%

 

  1. A runner’s average speed reduces by 25% every hour. If he runs 16km in the first hour and he runs for 3 hours, then what is his overall average speed?

Answer: 12.33 km/hr

 

  1. Trough and ridge are

Answer: Elongated area of low pressure and of high pressure respectively.

 

  1. The boundary layer of the forest at which the energy exchange occurs and some insolation is returned directly to space is

Answer: forest canopy

 

  1. The organisms that prefer high salt concentration habitats refer to as

Answer: halophiles

 

  1. Which one of the following is not an operating system?

Answer: MS-Excel

 

  1. Which one of the following protocols is not an application layer of the TCP/IP model?

Answer: IP

 

  1. Which one of the following is a semiconductor device that is used to increase the power of the incoming signals by preserving the shape of the original signal?

Answer: Transistor

 

  1. Which of the following combinations correctly represents the genetic materials in prokaryotes and eukaryotes respectively?

Answer: Nucleoid and Chromatin

 

13. Lysosomes are sacs of the cell filled with digestive enzymes.  These digestive enzymes re synthesized by

Answer: rough endoplasmic reticulum

14. Which of the following best represents the cells of a meristem of plant?

Answer: Dense cytoplasm, thin cell wall, large nuclei and absence of vacuoles

 

15. Which one of the following animals has a four-chambered heart?

Answer: Crocodile

 

16. One way of incorporating desired characters into crop varieties is hybridization. In this process, there is crossing between genetically dissimilar plants.  Which one of the following crossings will not refer to hybridization?

Answer: Intragenic

 

17. Depending on the requirements, plant nutrients are classified as micronutrients and macronutrients. Which one of the following is an example of a macronutrient?

Answer: Magnesium

 

18. Buds produced in the notches along the leaf margin of Bryophyllum fall on soil and develop into new plants. This is an example of which one of the following types of reproduction?

Answer: Vegetative propagation

 

19. Phloem tissues are mostly responsible for transport of

Answer: minerals

 

20. Two objects, x and y, have equal mass and are moving with speeds u and 3u respectively. Their kinetic energies kx and ky are related as

Answer: 9kx=ky

 

21. Which one of the following is not the unit of pressure?

Answer: J/m2

 

22. Which one of the following materials cannot be used to make a convex lens?

Answer: Aluminum

 

23. The optical phenomenon responsible for the blue colour of sky is

Answer: scattering

 

24. The electrical device used for converting mechanical energy into electrical energy is called

Answer: generator

 

25. The magnitude of focal length of a concave lens is 2m. What is the power of the lens?

Answer: -0.5 dioptre

 

26. At the time of short circuit, the current in an electric circuit

Answer: increase sharply

 

27. If the linear momentum of a moving object changes by two times, then its kinetic energy will change by a factor of

Answer: 4

28. Which one of the following oxides reacts with both acid and base?

Answer: Aluminum oxide

 

29. Which of the following makes bread soft and spongy when baking soda is added?

Answer: CO2

 

30. The average age of father and elder son is 35 years, the average age of father and younger son is 32 years and average age of the two sons is 17 years. What is the average age of the father and his two sons?

Answer: 28 years

 

31. A number is 124 more than its one-third. What is that number?

Answer: 186

 

32. A car travels ¾ th of the distance at a speed of 60 ks/hr and the remaining ¼ th of the distance at a speed of v km/hr. If the average speed for the full journey is 50 km/hr, then the value of v is

Answer: 100/3

 

33. Suppose A and B can complete a work together in 10 days. If B alone can complete the work in 15 days, then in how many days can A alone finish the work?

Answer: 30 days

 

34. If the average of the first four of five numbers in decreasing order is 25 and the average of the last four numbers is 20, then what is the difference between the first and the last number?

Answer: 20

 

35. Borax is prepared from

Answer: sodium carbonate

 

36. Cinnabar is an ore of

Answer: Mercury

 

37. White gold is an alloy of

Answer: gold, nickel and palladium

 

38. Hydrogenation of alkenes can be carried out in the presence of

Answer: nickel

 

39. Calcium oxide reacts with water to produce slaked lime. It is an example of

Answer: combination reaction

40. There is a group of 5 people among which there is one couple. In how many ways can these 5 people be seated in a row having 5 chairs if the couple is to be seated next to each other?

Answer: 48

 

41. Two friends 10 km apart start running towards each other at speeds of 10 km/hr and 14 km/hr respectively. After how much time will they meet each other?

Answer: 25 minutes

 

42. A coin is tossed 3 times. The probability of getting exactly 2 heads is

Answer: 3/8

 

43. A test consists of 25 MCQs. Each correct answer gives +4 marks and incorrect answer gives -1 mark. If a candidate scores 74 marks, then how many questions were left unattempt?

Answer: 4

 

44. A person has a total of 100 coins consisting of $ 2 and $ 5 coins. If the total value of the coins is $ 320, then the number of $2 coins is

Answer: 60

 

45. The technology known as ‘Electro magnetic Air Lift System’ is sometimes talked about in reference to

Answer: launching aircraft from warships

 

46. Consider the following statements:

Aluminum powder is used as a solid fuel for rocket engines.

Compared to liquid fuel propelled rocket engines, the thrust per amount of fuel burned is higher in solid fuel propelled rocket engines.

Which of the statements given above is /are correct?

Answer: 1 only

47. Consider the following missiles:

Agni-I

BrahMos

Dhanush

Which of the above is/are cruise missile/missiles?

Answer: 2 only

48. With reference to India’s defence, consider the following helicopters:

Cheetah

Chetak

Rudra

Which of the above has/have turret gun, rocket system and air-to-air missile?

Answer: 3 only

49. Recently, India gave a coastal radar system to which one of the following countries?

Answer: Maldives

50. Which one of the following artworks was hailed by Sister Nivedita as the ‘first masterpiece of Indian art’?

Answer: Bharatmata by Abanindranath Tagore

 

51. ‘Operation Sankalp’ was initiated and implemented by the

Answer: Indian Navy

 

52. Which one of the following statements is not true with regard to tribal welfare?

Answer: The Special Area Development Programme aims at distribution of forest area produces to the tribals equitably.

 

53. Which one of the following statements is not correct?

Answer: The ‘Sampoorna Grameen Rozgar restructuring the ‘Integratd Rural Development Programme’ in 2001.

 

54. The Battle of Rakshasi-Tangadi is popularly known as the

Answer: Battle of Talikota

 

55. Ashokan inscriptions in Afghanistan are written in which one of the following scripts?

Answer: Greek-Aramaic

 

56. Which one of the following statements about coins struck during 200 BCE to 300 CE in the Indian subcontinents is not correct?

Answer: Absence of Negama coin suggests the declining power and authority of merchant guilds.

 

57. Match List-I with List-II and select the correct answer using the code given below the Lists:

 

List-I                                                   List-II

(Vedic name of river)                      (Modern name)

Drishadvati –              Chenab

Askini –              Chautang

Vitasta –              Ravi

Purushni –              Jhelum

 

Answer:  A           B             C             D

2           1             4             3

 

58. When was the Kothari Commission appointed by the Government of India to look into the education sector of India?

Answer: 1965

 

59.  Which one of the following is not correct?

Answer: The California Current is a warm ocean current.

60. Which of the following statements about maps are correct?

  1. Maps that maintain the true shapes of areas are known as conformal maps.
  2. Maps are used to show spatial relationships.
  3. Maps cannot show route from one place to another.

Select the correct answer using the code given below.

Answer: 1 and 2 only

61. Which one of the following statements about ‘great circle’ is not correct?

Answer: Great circles mark the longest travel routes between locations on the Earth’s surface.

 

62. Which one of the following statements is correct with reference to normal lapse rate?

Answer: Temperature is highest at ground level and decreases with increasing altitude.

 

63. Which one of the following is a tributary of the Brahmaputra River?

Answer: Manas

 

64. The landmark case of D.C. Wadhwa vs. State of Bihar in the Supreme Court is related to which one of the following powers of the Governor?

Answer: To repromulgate ordinances

 

65. ‘Operation Flood’ is also popularly known as

Answer: The White Revolution

 

66. The ‘Stand-up India Scheme’ is related to which one of the following issues?

Answer: Promoting entrepreneurship amongst women, SC and ST communities.

 

67. Which one of the following is not a feature of Indian federalism?

Answer: India federalism is based on the principle of Separation of Powers.

 

68. Consider the following statements:

The early Malwa school of paintings was influenced by Shirazi school while the early Mughal paintings initially followed Bihzad school.

The major exponents of Bihzad school in India were Sayyid Ali and Abdus Samad.

69. Which of the statements given above is/ are correct?

Answer: Both 1 and 2

 

70. Which of the following statements about ‘Ek Bharat Shreshtha Bharat’ programme is/are correct?

It was announced in the year 2014.

Its aim is to create an environment which promotes learning between the States by sharing best practices and experiences.

71. Select the correct answer using the code given below.

Answer: 2 only

  1. Consider the following statements:
  2. Mirage 2000 is a twin-engine fighter jet.
  3. HAL Tejas is a delta- winged fighter jet.
  4. Rafale is a hypersonic fighter jet.

72. Which of the statements given above is/are correct?

Answer: 2 only

73. Which one of the following aerospace companies designed and manufactured ‘Falcon 9’, a reusable rocket?

Answer: SpaceX

 

74. ‘The ks-47M2 Kinzhal’, a nuclear- capable hypersonic missile, belongs to which one of the following countries?

Answer: Russia

 

75. Mariupol city, frequently mentioned in news in the context of Russia-Ukraine conflict, is situated on the coast of

Answer: Sea of Azov

 

76. Recently, with which one of the following countries did India sign the ‘Comprehensive Economic Partnership Agreement’?

Answer: United Arab Emirates

 

77. Which one of the following is the oldest Central Paramilitary Force in India?

Answer: The Assam Rifles

 

78. Which of the following statements about ‘Agency Houses’ is/are correct?

They were important commercial formations in the late eighteenth and nineteenth century India.

The operation of managing agencies remained confined to Calcutta.

Select the correct answer using the code given below.

Answer: 1 only

79. Which one of the following statements about Tolkappiyam is not correct?

Answer: It was composed by Panini.

 

80. Which one of the following statements about ‘Princely States’ in India is not correct?

Answer: The State of Travancore finally joined India through a plebiscite.

 

81. Which one of the following books was authored by Harshavardhana?

Answer: Ratnavali

 

82. ‘The king of Dance’ is description of

Answer: Bronse Natraja of the Cholas

 

83. Anasagar Lake is located in which one of the following States?

Answer: Rajasthan

Santhakumar Raja

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