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 Chemistry Questions

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Q:

Pentlandite is an ore/mineral of _______.

A) Titanium B) Nickel
C) Uranium D) Zinc
 
Answer & Explanation Answer: B) Nickel

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Q:

Which of the following is used in gunpowder?

A) Potassium bromide B) Potassium nitrate
C) Monopotassium tartarate D) Potassium sulphate
 
Answer & Explanation Answer: B) Potassium nitrate

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Q:

Why is Carbon Monoxide a pollutant ?

A) Reacts with haemoglobin B) Makes nervous system inactive
C) It reacts with Oxygen D) It inhibits glycolysis
 
Answer & Explanation Answer: A) Reacts with haemoglobin

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Q:

What is dehydration?

A) Removal of acid from a molecule B) Removal of base from a molecule
C) Removal of water from a molecule D) Removal of alkali from a molecule
 
Answer & Explanation Answer: C) Removal of water from a molecule

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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:

In the reaction H2O2 + Cl2 -----> 2HCl + O2, H2O2 acts as

A) an acid B) an oxidising agent
C) a reducing agent D) a base
 
Answer & Explanation Answer: C) a reducing agent

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Q:

Which of the following is the third member of the Dobereiner triad, that also features Lithium and Sodium?

 

A) Potassium B) Boron
C) Barium D) Hydrogen
 
Answer & Explanation Answer: A) Potassium

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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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