Chemistry Questions

Q:

The nitrogenous waste of Human Beings is

A) Ammonia B) Urea
C) Ammonium Nitrate D) Uric Acid
 
Answer & Explanation Answer: B) Urea

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Q:

The upper part of the heterosphere is composed almost completely of which gas?

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

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Q:

Uraninite is an ore/mineral of _______.

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

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Q:

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

A) Potassium B) Sulphur
C) Aluminium D) Phosphorus
 
Answer & Explanation Answer: A) Potassium

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Q:

What is the chemical formula of aluminium nitride?

A) AlN B) Al2N
C) AlN2 D) AlN3
 
Answer & Explanation Answer: A) AlN

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Q:

Haematite is an ore/mineral of

A) Zinc B) Iron
C) Lead D) Manganese
 
Answer & Explanation Answer: B) Iron

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Q:

The reactions in which oxidation and reduction occur simultaneously are called _______.

A) Feral reactions B) Redox reactions
C) Demug reactions D) Kerol reactions
 
Answer & Explanation Answer: B) Redox reactions

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Q:

Activated Charcoal is used to remove colouring matter from pure substances by_______

A) Bleaching B) Oxidation
C) Adsorption D) Reduction
 
Answer & Explanation Answer: C) Adsorption

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