Q:

Which of the following compounds has a double bond?

A) Acetylene	B) Ethene
C) Ethane	D) Methane

Answer & Explanation Answer: B) Ethene

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Q:

There are 15 protons and 22 neutrons in the nucleus of an element. What is its mass number?

A) 22	B) 7
C) 37	D) 15

Answer & Explanation Answer: C) 37

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Q:

Which city is located on the banks of the river Alaknanda?

A) Badrinath	B) Ayodhya
C) Allahabad	D) Lucknow

Answer & Explanation Answer: A) Badrinath

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Q:

Why do atoms bond?

A) To reduce potential energy and gain stability	B) To make atoms
C) To increase potential energy and lose stability	D) To increase potential energy and gain stability

Answer & Explanation Answer: A) To reduce potential energy and gain stability

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Q:

Select the INCORRECT set of Molecular Formula - IUPAC Name - Common Name from the following options.

A) C4H9OH	B) C2H3OH - Methanol - Methyl Alcohol
C) C2H5OH - Ethanol - Ethyl Alcohol	D) C3H7OH - Propanal - Propyl Alcohol

Answer & Explanation Answer: B) C2H3OH - Methanol - Methyl Alcohol

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Q:

The most active ingredient in bleaching powder is

A) Iodine	B) Calcium hypochlorite
C) Nitric acid	D) Ammonium sulphate

Answer & Explanation Answer: B) Calcium hypochlorite

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Q:

The gas evolved when sodium carbonate reacts with hydrochloric acid is

A) Hydrogen	B) Chlorine
C) Hydrogen Chloride	D) Carbon dioxide

Answer & Explanation Answer: D) Carbon dioxide

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Q:

In the following question, a sentence has been given in Direct/Indirect speech. Out of the four alternatives suggested, select the one, which best express the same sentence in Indirect/Direct speech.

I said to Arun, "What do you want?"

A) asked that Arun what he wanted.	B) I asked that Arun what he wants.
C) I asked that Arun what he is wanting.	D) I asked Arun what he wanted.

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