Chemistry Questions

Q:

What is the reaction between an acid and a base called?

A) Desalination B) Crystallisation
C) Neutralisation D) Sublimation
 
Answer & Explanation Answer: C) Neutralisation

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Q:

Atomic number of which of the following elements is greater than that of Calcium?

A) Chlorine B) Argon
C) Sulphur D) Scandium
 
Answer & Explanation Answer: D) Scandium

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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:

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:

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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Q:

Molybdenite is an ore/mineral of

A) Molybdenum B) Nickel
C) Silver D) Tin
 
Answer & Explanation Answer: A) Molybdenum

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Q:

When iron is exposed to moist air, a reddish brown coating of hydrated Iron (III) Oxide (Fe2O3) is deposited on its surface. This reddish brown coating is called

A) alloy B) dust
C) rust D) iron
 
Answer & Explanation Answer: C) rust

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Q:

A standard drink is generally

A) 5 oz Glass of Wine B) 12 oz Beer    
C) 1.5 oz of Hard Liquor D) All the above
 
Answer & Explanation Answer: D) All the above

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