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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Filed Under: Chemistry
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0 86456

Q:

Find the G.C.F. & L.C.M. of 20 and 28.

A) 20,280	B) 5,280
C) 10,140	D) 4,140

Answer & Explanation Answer: B) 5,280

Explanation:

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Filed Under: Inventions
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177 86281

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 86127

Q:

Select the synonym of

sentry

A) bandit	B) competitor
C) sentinel	D) foe

Answer & Explanation Answer: C) sentinel

Explanation:

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Filed Under: English
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0 86008

Q:

Astrosat is India's first

A) Reconnaissance satellite	B) Remote sensing satellite
C) space observatory	D) Communication satellite

Answer & Explanation Answer: A) Reconnaissance satellite

Explanation:

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Filed Under: Inventions
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82 85943

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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Filed Under: English
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0 85686

Q:

Four pairs of words are Given.Find the odd one out.

A) Chalk: Slate	B) Pencil: Notebook
C) Pen: Ink	D) Sketch pen: Drawing Book

Answer & Explanation Answer: D) Sketch pen: Drawing Book

Explanation:

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Filed Under: Inventions
Exam Prep: Bank Exams

90 85581

Q:

Which among the following noble gas has highest molar mass?

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

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