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Q:

Improve the bracketed part of the sentence.

The passengers (were waited) for the flight at the emigration lobby, for long.

A) had wait B) had been waited
C) have been waiting D) no improvement
 
Answer & Explanation Answer: C) have been waiting

Explanation:
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Q:

Select the antonym of

to contend

A) to comply B) to oppugn
C) to grapple D) to vie
 
Answer & Explanation Answer: A) to comply

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Q:

Consider the following chemical reaction :

aFe2O3(s) + bCO(g) + cFe(s) + dCO2

In the balanced chemical equation of the above, which of the following will be the values of the coefficients a, b, c and d respectively?

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

Explanation:

Fe2O3 + 3CO = 2Fe + 3CO2

Hematite + Carbon Monoxide = Iron + Carbon Dioxide

In this reaction, the iron oxide is reduced to iron, and the carbon is oxidised to carbon dioxide.

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Q:

Select the antonym of

to brood

A) to repine B) to ignore
C) to fret D) to mope
 
Answer & Explanation Answer: B) to ignore

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Q:

Select the synonym of

decree

A) certificate B) Law
C) title D) award
 
Answer & Explanation Answer: B) Law

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Q:

Which of the following is NOT a compound?

 

A) Ammonia B) Milk
C) Sodiumchloride D) Chalk
 
Answer & Explanation Answer: B) Milk

Explanation:
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Q:

Select the synonym of

reassert

A) renounce B) acknowledge
C) disbelief D) conceal
 
Answer & Explanation Answer: B) acknowledge

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Q:

Which of the following represents a relation for ‘heat lost = heat gained’?

 

A) Principle of thermal equilibrium B) Principle of colors
C) Principle of calorimetry D) Principle of vaporization
 
Answer & Explanation Answer: C) Principle of calorimetry

Explanation:

Heat lost by hot object = Heat gained by cold object

where we ignore heat gained or lost from/to the surroundings.

The study of heat gained and lost in this manner is often called Calorimetry.

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