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 Chemistry Questions

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Q:

In the following reaction, fill in the blank.
Acid + Base → _______ + Water

A) Carbon dioxide B) Metal Oxide
C) Hydrogen Gas D) Salt
 
Answer & Explanation Answer: D) Salt

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Q:

When Granite rocks get metamorphosed, they form

A) Quartzite B) Gneiss
C) Marble D) Slate
 
Answer & Explanation Answer: B) Gneiss

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Q:

Atomic bomb is based on which of the following principle?

A) Nuclear fusion B) Nuclear fission
C) Natural radioactivity D) All options are correct
 
Answer & Explanation Answer: B) Nuclear fission

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Q:

What is the common name of Sodium Bicarborate?

A) Baking Soda B) Washing Powder
C) Plaster of Paris D) Fly Ash
 
Answer & Explanation Answer: A) Baking Soda

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Q:

Which one of the following gases dissolves in water to give acidic solution?

A) Carbon dioxide B) Oxygen
C) Nitrogen D) Hydrogen
 
Answer & Explanation Answer: A) Carbon dioxide

Explanation:

Carbon dioxide (CO2) gas dissolved in water can cause water to become acidic.The acidity of water from dissolved CO2 can be reduced by a base such as baking soda (sodium bicarbonate).

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Q:

What is an exothermic reaction?

A) Reaction in which heat is released. B) Reaction in which heat is absorbed.
C) Reaction in which neither heat is released nor absorbed. D) None
 
Answer & Explanation Answer: A) Reaction in which heat is released.

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Q:

Bauxite is used as raw material by which industry

A) Aluminium B) Iron
C) Steel D) Gold
 
Answer & Explanation Answer: A) Aluminium

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Q:

Which among the following is an example of mixture?

A) Milk B) Gasoline
C) Liquefied petroleum gas D) All options are correct
 
Answer & Explanation Answer: D) All options are correct

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