Haryana Constable Exam, 01.11.2021 (Morning Shift-IV)

Total Questions: 100

41. A grocer buys two kind of rice at Rs. 1.80 and Rs. 1.20 per kg respectively. In what proportion should these be mixed, so that by selling the mixture at Rs. 1.75 per kg. 25% may be gained?

(1) 3 : 4
(2) 2 : 1
(3) 3 : 2
(4) 1 : 2

Correct Answer: (4) 1 : 2

Solution:Cost price of mixture = 100/125 × 1.75

= 4/5 × 1.75

= 4 × 0.35 = Rs . 1.40

By rule of alligation,

= 0.20 : 0.40

= 2 : 4 = 1 : 2

42. NBAGR stands for

(1) National Bureau of Animal Garland Resource
(2) National Bureau of Animal Genetic Resource
(3) National Bureau of Animal Gland Resource
(4) National Bureau of Animal Glue Resource

Correct Answer: (2) National Bureau of Animal Genetic Resource

Solution:National Bureau of Animal Genetic Resources (NBAGR) was set up on 21st September, 1984 at the campus at National Dairy Research Institute, Bangalore.

The Institute was shifted to Karnal on 19th July, 1985 and temporarily located in the campus of National Dairy Research Institute.

43. In this question, two statements are given followed by two conclusions, Choose the conclusion(s) which best fit(s) logically.

Statements:

1. Some switch is not keys.

2. Some key are not light.

Conclusions:

I. Some light are not key.

II. Some switch is light.

(1) Both conclusions I and II follows
(2) Only conclusion II follows
(3) Only conclusion I follows
(4) None of the conclusion follows

Correct Answer: (3) Only conclusion I follows

Solution:According to statements :

From above venn diagrams :

I. Some light are not key. (✔)

II. Some switch is light. (X) ← may or may not be.

44. The organisms which can tolerate and thrive in a wide range of temperature are called as

(1) Eurythermal
(2) Stenothermal
(3) Euryhaline
(4) Stenohaline

Correct Answer: (1) Eurythermal

Solution:Eurythermal organisms are those that are able to tolerate a wide range of temperatures.

Organisms that can tolerate only a narrow range are called stenothermal organisms.

45. A cube is cut into two equal parts along a plane parallel to one of its faces. One piece is then coloured red on the two larger faces and green on the remaining while the other is coloured green on two smaller adjacent faces and red on the remaining. Each is then cut into 32 cubes of the same size. The 64 cubes are then mixed up. How many cubes have no coloured face at all?

(1) 8
(2) 0
(3) 4
(4) 16

Correct Answer: (2) 0

Solution:According to question,

From above no-any small cube is colourless i.e., '0'.

46. The smallest living cells known are

(1) Mycoplasma
(2) Nostoc
(3) Eubacteria
(4) Archaebacteria

Correct Answer: (1) Mycoplasma

Solution:Mycoplasma is the smallest living known cell.

It is prokaryotic, devoid of a cell wall and can live without oxygen.

47. The training centre of the National Defence Academy is located at

(1) Chennai
(2) Bombay
(3) Dehradun
(4) Khadakvasla

Correct Answer: (4) Khadakvasla

Solution:The National Defence Academy (NDA) is a joint services training Academy of the Indian Armed Forces.

The NDA is located at Khadakwasla near Pune, Maharastra.

48. Recently in the news, "Authorised Economic Operators Programme" is related to

(1) Supply Chain and Global Trade
(2) Cryptocurrency
(3) Base Erosion and Profit Shifting
(4) Money Laundering

Correct Answer: (1) Supply Chain and Global Trade

Solution:The Central Board of Indirect Taxes & Customs (CBIC) has inaugurated the online filing of Authorised Economic Operators (AEO) applications.

AEO is a programme (2007) under the aegis of the World Customs Organization (WCO) SAFE Framework of Standards to secure and facilitate global trade.
It aims to enhance international supply chain security and facilitate the movement of goods.

49. CICH₂ CH₂SCH₂ CH₂Cl is

(1) mustard gas
(2) phosgene
(3) tear gas
(4) freon

Correct Answer: (1) mustard gas

Solution:Mustard gas or sulfur mustard (CHCLS) is a chemical compound belonging to the sulfur-based family of cytotoxic and blister agent chemical warfare agents known as sulfur-mustards or mustard agents.

50. At what time, between 8 and 9 O'clock, is the angle between the minute hand and the hour hand 80°?

(1) 8 hours 43 × 3/11 minutes
(2) 8 hours 29 ×1/11 minutes
(3) 8 hours 58 × 2 /11 minutes
(4) Both (2) and (3)

Correct Answer: (4) Both (2) and (3)

Solution:Between 8 and 9 O'clock t = 8,

Let t hour x minutes the angle between both hand is 80°

Case -I :

When hour hand ahead the minute hand

80° = [30 ×(8 - x/5) + x/2 ]

=> 80° = 240 -6x + x/2

=> 11x/2 = 160

x = 160 ×2/11

= 320/11 = 29 ×1/11 minutes

Time = 8 hours 29 ×1/11 minutes

Case - II :

When minute hand ahead the hour hand

80° = [30 ×( x/5 - 8 ) - x/2 ]

80° = 6x - 240 - x/2

11x/2 = 320

=> x = 640/11 = 58 × 2/11 minutes

Time = 8 hours 58 × 2/11 minutes

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