Chemistry Questions

Q:

______ character of a bond between two atoms is greater if the difference in their electro negativities is lesser.

A) Polar B) Metallic
C) Ionic D) Covalent
 
Answer & Explanation Answer: D) Covalent

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Q:

Which one of the following is commonly used for pulp bleaching in the paper industry?

A) Mild sulphuric acid B) Glucose isomerase
C) peroxide D) Iodine and water
 
Answer & Explanation Answer: C) peroxide

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Q:

Highest percentage of carbon is found in which form of coal?

A) Anthracite B) Bituminous
C) Peat D) lignite
 
Answer & Explanation Answer: A) Anthracite

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Q:

Which of the following elements has the lowest melting point?

A) Bromine B) Zinc
C) Lead D) Calcium
 
Answer & Explanation Answer: A) Bromine

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Q:

Atomic number of which of the following elements is greater than that of Magnesium

A) Neon B) Fluorine
C) Sodium D) Aluminium
 
Answer & Explanation Answer: D) Aluminium

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Q:

Which molecule contains a polar covalent bond?

A) NBr3 B) C2H4
C) ZnS D) AgL
 
Answer & Explanation Answer: A) NBr3

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Q:

Which of the following are highly compressible?

A) Solid B) Liquid
C) Gas D) Solid and Liquid
 
Answer & Explanation Answer: C) Gas

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Q:

The poisonous gas accidentally released in Bhopal Gas Tragedy is

A) Methane B) Nitrous Oxide
C) Methyl Isocyanate D) Cyanogen
 
Answer & Explanation Answer: C) Methyl Isocyanate

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