Haryana Constable Exam 01.11.2021 (Morning Shift-II)

Total Questions: 100

51. 4/5 of a number exceeds its 2/3 by 8. The number is

Correct Answer: (4) 60
Solution:Let number =x According to question

52. The largest gas by volume in Biogas is

Correct Answer: (1) Methane
Solution:Biogas contains roughly 50-70 percent methane, 30-40 percent carbon dioxide, and trace amounts of other gases. Stored biogas can provide a clean, renewable, and reliable source of baseload power in place of coal or natural gas.

53. Two towns A and B are 60 km apart A school has to be built to serve 150 students of town A, 50 students of town B. If the total distance to be travelled by all the 200 students is to be as small as possible, then where should the school be built?

Correct Answer: (3) In town A
Solution:Let the school be at a dis-tance 'x km from the town A Then the distance of school from town B = (60 - x) km. Distaance travelled by 150 students of town A = 150% Distaance travelled by 150 students of town B So, total distance travelled by 200 student,

D = 150x + 3000 - 50x = 50(60 - x)

D = f(x) = 100x + 3000

Clearly 'D' is least when x = 0 Hence, the school should be built at town A.

54. 18th NonAligned Movement (NAM) Summit was hosted by

Correct Answer: (1) Azerbaijan
Solution:The 18th Summit of the Non-Aligned Movement was held October 25-26, 2019 in Baku, Azerbaijan.
  • The theme for the 18th NAM Summit is "Upholding the Bandung Principles to ensure concerted and adequate response to the challenges of the contemporary world.'

55. If the 25th of August in a month is Thursday, then number of Mondays in that month is

Correct Answer: (3) 5
Solution:25 August is a Thrusday so 29 August will be Monday.

... Days of Monday in month Au-gust: 29, 22, 15, 8, 1 August

56. Thermal decomposition of lime stone produces

Correct Answer: (1) Quick lime
Solution:When limestone is heated in a kiln, the calcium carbonate breaks down into calcium oxide and carbon dioxide. This type of reaction is called thermal decomposition. The process is called calcining. Once burnt limestone turns into calcium oxide which is known as quicklime.

57. In open groups mobility of members.

Correct Answer: (2) Relatively difficult
Solution:Groups are also classified on the basis of their structures.
  • In open groups, memberships is voluntory, and the mobility of members is possible like in a club
  • membership in closed groups is restricted and mobility is relatively difficult, like in caste groups.

58. The number of permutations of the letters of ALLAHABAD is

Correct Answer: (2) 9!/2(4!)
Solution:The number of permutation of the letter of ALLAHABAD = 9!/2!4! = 9!/2(4!)

59. _______is called the brain of the computer.

Correct Answer: (1) CPU
Solution:The microprocessor, commonly referred to as the central processing unit (CPU), is the brain of the computer.
  • It performs all types of data processing operations.
  • It stores data, intermediate results, and instructions (program).

60. 9 : 8 :: 16 : ?

Correct Answer: (2) 27
Solution: