Q:

What determines the mass number of an element?

A) Number of protons	B) Number of electrons and protons
C) Number of protons and neutrons	D) Number of neitrons

Answer & Explanation Answer: C) Number of protons and neutrons

Explanation:

The number of protons in an isotope or an atom gives its atomic number whereas the number of protons and neutrons gives its mass number.

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Q:

What element is used to disinfect swimming pools?

A) Fluorine	B) Chlorine
C) Bromine	D) Sulphur

Answer & Explanation Answer: B) Chlorine

Explanation:

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Q:

Look at the underlined part of each sentence. Below each sentence are given three possible substitutions for the underlined part. If one of them (a), (b) or (c) is better than the underlined part, indicate your response on the Answer Sheet against the corresponding letter. If none of the substitutions imporves the sentence, indicate (d) as your response on the Answer Sheet.

The Prime Minister had wide-ranging discussions on the international situation.

A) widely-ranged	B) wide-ranged
C) wide-range	D) No improvement

Answer & Explanation Answer: A) widely-ranged

Explanation:

Here ‘widely-ranged’ is the correct expression of the adverb, and it qualifies the verb discussions.

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Filed Under: English
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Q:

In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/Phrase.
At one's wits end

A) A man of ability	B) At the last moment
C) To get puzzled	D) Undecided controversy

Answer & Explanation Answer: C) To get puzzled

Explanation:

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Q:

Protists and bacteria are grouped into different domains because

A) protists have a membrane-bounded nucleus, which bacterial cells lack.	B) protists eat bacteria
C) bacteria decompose protists	D) protists are photosynthetic

Answer & Explanation Answer: A) protists have a membrane-bounded nucleus, which bacterial cells lack.

Explanation:

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Q:

Unlike eutherians, both monotremes and marsupials

A) have some embryonic development outside the uterus	B) are found in Australia
C) lay eggs	D) lack nipples

Answer & Explanation Answer: A) have some embryonic development outside the uterus

Explanation:

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Q:

Odd man out of the following options. One among them is not related to other three.

A) NABARD	B) RBI
C) BIS	D) IRDA

Answer & Explanation Answer: C) BIS

Explanation:

In the given options, BIS is the odd one from the other three. NABARD, RBI & IRDA are the bodies related to financial sector of India. The financial sector consists of banks, investment funds, insurance companies and real estate firms.

BIS stands for Beareau of Indian Standards is a National standard body of India with the activities of standardization, marking and quality certification of goods.

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Q:

Bending of light rays in denser medium is termed as:

A) Reflection	B) Dispersion
C) Refraction	D) Deflection

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