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 Chemistry Questions

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Q:

Blotting paper absorbs ink due to

A) Coarse nature of paper B) Osmosis
C) Capillary action D) Siphoning
 
Answer & Explanation Answer: C) Capillary action

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Q:

The salt concentration (measured as salinity in parts per thousand), is _______ % in sea.

A) 10-20 B) 30-35
C) 40-50 D) 60-70
 
Answer & Explanation Answer: B) 30-35

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Q:

......... is a deliquescent compound.

A) Quick lime B) Sulphuric acid
C) Phosphorous pentoxide D) Magnesium chloride
 
Answer & Explanation Answer: D) Magnesium chloride

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0 1084
Q:

Which of the following represents an ion?

A) a particle having 9 protons, 9 neutrons, and 10 electrons B) a particle having 19 protons, 21 neutrons, and 19 electrons
C) a particle having 14 protons, 14 neutrons, and 14 electrons D) a particle having 1 proton, 3 neutrons, and 1 electron
 
Answer & Explanation Answer: A) a particle having 9 protons, 9 neutrons, and 10 electrons

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Q:

Ozone is represented as _____.

A) O3 B) H2O2
C) Cl2O D) N2O
 
Answer & Explanation Answer: A) O3

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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:

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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0 1080
Q:

Inert gases are

A) Miscible with water B) Not stable
C) Chemically unreactive D) Chemically very active
 
Answer & Explanation Answer: C) Chemically unreactive

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