Q:

Consider the following chemical reaction :

${aFe}_{2} O_{3} (s) + bCO (g) + cFe (s) + {dCO}_{2}$

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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0 85753

Q:

Improve the bracketed part of the sentence.

By 2030 India (would) have become the most populous country in the world.

A) will	B) should
C) shall	D) no improvement

Answer & Explanation Answer: A) will

Explanation:

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0 85495

Q:

Improve the bracketed part of the sentence.

When I last saw Ravi, he (had been running) to catch his bus.

A) ran	B) was running
C) had run	D) no improvement

Answer & Explanation Answer: B) was running

Explanation:

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0 85274

Q:

An interest group hires lobbyists to

A) influence legislators	B) raise money for politicians
C) handle tough problems	D) enact laws in its favor

Answer & Explanation Answer: A) influence legislators

Explanation:

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Filed Under: General Awareness
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0 85102

Q:

What colors make green?

A) Blue & Red	B) Red & White
C) Yellow & Red	D) Yellow & Blue

Answer & Explanation Answer: D) Yellow & Blue

Explanation:

We all know that green is one among the three primary colors in additive mixing.

what_colors_make_green1605081805.jpg image

By mixing blue and yellow colors we get green color.

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3 85092

Q:

Which word or words explains the meaning of the following idioms:-

To flog a dead horse

A) To act in a foolish way	B) To waste one’s efforts
C) To revive interest in an old subject	D) To revive old memories

Answer & Explanation Answer: B) To waste one’s efforts

Explanation:

To flog a dead horse means to waste effort on something when there is no chance of succeeding.

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1 84921

Q:

Improve the bracketed part of the sentence.

People in some rural areas don't get water to drink, (besides) many people in urban areas have water even for their pools.

A) and	B) whereas
C) where	D) no improvement

Answer & Explanation Answer: B) whereas

Explanation:

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0 84887

Q:

Which among the following noble gas has highest molar mass?

A) Kr	B) Ne
C) Ar	D) Xe

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