Haryana Constable Exam 01.11.2021 (Morning Shift-II)

Total Questions: 100

71. ______is often used if the ore is soluble in some suitable solvent.

Correct Answer: (4) Leaching
Solution:Leaching is the process of concentration of ore. It is often used if the ore is soluble in some suitable solvent.
  • In this process, ore dissolves in a chemical solution. The minerals will react and dis-solve leaving behind the impurities only which filter out.

72. Which pattern most closely resembles the following pattern?

Correct Answer: (4) a
Solution:Question figure most closely resembles in answer figure 'a'.

73. If on a marked price, the difference on selling prices with a discount of 30% and two successive discounts of 20% and 10% is Rs. 72, the the marked price (in rupees) is

Correct Answer: (1) 3,600
Solution:Let marked price = Rs. x According to question, 80% of 90% of x-70% of x = 72

74. Cyclical changes during reproduction in dogs are called

Correct Answer: (2) Oestrus cycle
Solution:The females of placental mammals exhibit cyclical changes in the activities of ovaries and accessory ducts as well as hormones during the reproductive phase.
  • In non primate mammals like cows, sheep, deer, dog, tiger, etc., such cyclical changes during reproduction are called the oestrus cycle whereas in primates (monkey, apes, and humans) such cyclical changes are called the menstrual cycle.

75. When did Mammals evolve on earth?

Correct Answer: (4) 200 million years ago
Solution:According to the geologic time scale, it is in the Mesozoic era and present in the Triassic period.
  • It is the period between the extinction of the Dinosaurs and the present day is called the age of mammals or Cenozoic.
  • The first mammals were shrews. Their fossils are smallsized and protect their offspring inside their body. They evolved in a better manner according to their survival.

76. What is Disguised Unemployment refers to?

Correct Answer: (2) It is a situation wherein the number of workers in a job is more than required to do the job
Solution:Also known as hidden unemployment, this refers to a situation where labour that is employed in a job is not actuallyutilised for the production of goods and services.

In other words, such employment does not contribute to the output of an economy and is thus akin to a form of unemployment.

77. Immediately between which of the following pairs of people is D sitting?

Study the given information carefully and answer the questions that follow :

I. A, B, C, D, E, F and G are sitting on a wall and all of them are facing east.

III. B is at an extreme end and has E as his neighbour.

IV. G is between E and F.

V. D is sitting third from the south end.

 

Correct Answer: (2) CF
Solution:'D' is sitting between pairs of people 'FC'.

78. Name the person who should change places with C such that he gets the third place from the north end.

Study the given information carefully and answer the questions that follow :

I. A, B, C, D, E, F and G are sitting on a wall and all of them are facing east.

III. B is at an extreme end and has E as his neighbour.

IV. G is between E and F.

V. D is sitting third from the south end.

 

Correct Answer: (3) G
Solution:When 'C' change his position with 'G' than 'C' gets the third place from the north end,

79. Which of the following pairs of people are sitting at the extreme ends?

Study the given information carefully and answer the questions that follow :

I. A, B, C, D, E, F and G are sitting on a wall and all of them are facing east.

III. B is at an extreme end and has E as his neighbour.

IV. G is between E and F.

V. D is sitting third from the south end.

 

Correct Answer: (2) AB
Solution:Pair of people 'AB' are sit-ting extreme ends.

80. The difference between the value of export and value of imports of goods of a cou...in a given period of time is known as

Correct Answer: (4) Balance of paymer
Solution:Balance of trade (BOT) is the difference between the value of a country's exports and the value of a country's imports for a given period.
  • Balance of trade is the largest component of a country's balance of payments (BOP).