Latest Chemistry General Knowledge(GK) Questions and answers

1 .

The metal used to recover copper from a solution of copper sulphate is

A)

Na

B)

Ag

C)

Hg

D)

Fe

Correct Answer : Fe

2 .

The metal that is usually extracted from sea water is

A)

Ca

B)

Na

C)

k

D)

Mg

Correct Answer : Mg

3 .

The most electronegative element among the following is

A)

sodium

B)

bromine

C)

fluorine

D)

oxygen

Correct Answer : fluorine

4 .

The number of moles of solute present in 1 kg of a solvent is called its

A)

molality

B)

molarity

C)

normality

D)

formality

Correct Answer : molality

5 .

The maximum number of covalent formed by nitrogen is

A)

1

B)

2

C)

3

D)

4

Correct Answer : 4

6 .

The nucleus of an atom consists of

A)

electrons and neutrons

B)

electrons and protons

C)

protons and neutrons

D)

All of the above

Correct Answer : protons and neutrons

7 .

The names of the scientists, Newlands, Mendeleev, and Meyer are associated with the development of

A)

atomic structure

B)

metallurgy

C)

periodic table of contents

D)

discovery of elements

Correct Answer : periodic table of contents

8 .

The reaction is carbonate and bicarbonate ions with mineral is called

A)

hydrolysis

B)

carbonation

C)

oxidation

D)

solution

Correct Answer : carbonation

9 .

The metamorphism which involves the chemical replacement of elements in rock minerals when gases and liquids permute into bedrock is called

A)

dynamic metamorphism

B)

metasomatic metamorphism

C)

thermal metamorphism

D)

contact metamorphism

Correct Answer : metasomatic metamorphism

10 .

The relative abundance of dissolved salts in seawater in descending order is as follows

A)

chlorine, sodium, sulphate, magnesium, calcium, potassium

B)

sodium, chlorine, magnesium, potassium, sulphate, calcium

C)

chlorine, magnesium, calcium, sodium, potassium, sulphate

D)

chlorine, sodium, magnesium, calcium, potassium, sulphate

Correct Answer : chlorine, sodium, sulphate, magnesium, calcium, potassium