3
Q:

Which of the following group is NOT Dobereiner Triads?

 

A) Li, Na, K B) N, P Au
C) Cl, Br, I D) Ca, Sr, Ba

Answer:   B) N, P Au



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Subject: Chemistry
Exam Prep: Bank Exams
Q:

__________gives hardness to stainless steel.

A) Zinc B) Carbon
C) Lead D) Tin
 
Answer & Explanation Answer: B) Carbon

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1 990
Q:

The most pure form of carbon among the options is

A) Anthracite B) Lampblack
C) Graphite D) Wood Charcoal
 
Answer & Explanation Answer: A) Anthracite

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0 1180
Q:

What is the product formed when sodium bicarbonate is heated strongly?

A) Sodium Carbonate B) Sodium Hydroxide
C) Sodium Peroxide D) Sodium Monoxide
 
Answer & Explanation Answer: A) Sodium Carbonate

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0 1322
Q:

What happens in an oxidation reaction?

A) Protons are lost. B) Electrons are lost
C) Neutrons are lost. D) Electrons are gained.
 
Answer & Explanation Answer: B) Electrons are lost

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1 878
Q:

Which among the following has the maximum density?

A) Water B) Ice
C) Ethylene D) Acetone
 
Answer & Explanation Answer: A) Water

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0 1463
Q:

Bauxite is an ore/mineral of

A) Aluminium B) Beryllium
C) Lead D) Tin
 
Answer & Explanation Answer: A) Aluminium

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1 1085
Q:

The mass of proton and mass of ________ is same.

A) Neutron B) Electron
C) Isoprone D) Alpha particle
 
Answer & Explanation Answer: A) Neutron

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2 1093
Q:

The compound used in prickly-­heat powder to prevent excessive sweating is

A) Boric acid B) Phosphoric acid
C) Carbonic acid D) Sulphonic acid
 
Answer & Explanation Answer: A) Boric acid

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