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Q:

The angle of elevation of the top of a pillar from the foot and the top of a building 20 m high, are 60° and 30° respectively. The height of the pillar is

A) 10 m B) 10√3m
C) 60 m D) 30 m
 
Answer & Explanation Answer: D) 30 m

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Q:

Two circles of same radius intersect each other at P and Q. If the length of the common chord is 30 cm and distance between the centres of the two circlesis 40 cm, then what is the radius (in cm) of the circles?

A) 25 B) 26
C) 27 D) 28
 
Answer & Explanation Answer: A) 25

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Q:

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No Error'.

The evolutionary history of penguins (1)/ is well-researched and represents a showcase of (2)/ evolution bio geography. (3)/ No error (4)

 

A) 1 B) 2
C) 3 D) 4
 
Answer & Explanation Answer: C) 3

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Filed Under: English
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Q:

In economic equilibrium _____

A) supply is equal to the demand. B) the surplus is larger than the shortage.
C) elasticity of demand equals elasticity of supply D) price elasticity of demand is unity
 
Answer & Explanation Answer: A) supply is equal to the demand.

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Filed Under: Indian Economy
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Q:

How are elements arranged in the Modern Periodic Table?

A) In the increasing order of their Molecular Mass B) In the increasing order of their Atomic Mass
C) In the increasing order of their Atomic Number D) In the increasing order of their Mass Number
 
Answer & Explanation Answer: B) In the increasing order of their Atomic Mass

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Filed Under: Chemistry
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Q:

The state of matter can be changed into another state by changing the

A) Volume B) Density
C) Shape D) Temperature
 
Answer & Explanation Answer: D) Temperature

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Filed Under: Chemistry
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Q:

The theory behind stars twinkling is that

A) The refractive index of the different layers of earth's atmosphere changes continuously, consequently the position of the star's image changes with time B) The intensity of light emitted by them changes with time
C) The light from the star is scattered by the dust particles and air molecules in the earth's atmosphere D) The distance of the stars from the earth changes with time
 
Answer & Explanation Answer: A) The refractive index of the different layers of earth's atmosphere changes continuously, consequently the position of the star's image changes with time

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Filed Under: Physics
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Q:

The 'Go for Zero' policy, is associated with which country?

A) New Zealand B) Germany
C) United Kingdom D) Australia
 
Answer & Explanation Answer: D) Australia

Explanation:

The "Go for Zero" policy of Australia helped the country to bring down its COVID-19 cases. The Go for zero policy of Australia was proposed by a non-profit think tank Grattan Institute that advises the government. Under the policy besides expanding the testing of covid-19, Australia also increased contact tracing and mandatory isolation.

 

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Filed Under: General Awareness
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