Chemistry Multiple Choice Questions Set – 45

Here you will find GK MCQ Questions for Chemistry GK with Answers PDF Free Download based on the important concepts and topics given in the textbook as per new exam pattern. This may assist you to understand and check your knowledge about the Chemistry GK. Students also can take a free test of the Multiple Choice Questions of Chemistry GK. Each question has four options followed by the right answer.

Question 1.

The first organic compound synthesised in the laboratory was

A. Urea
B. Uric acid
C. Lactic acid
D. Glucose

Ans: D. Glucose

Question 2.

An example of heterocyclic compound is

A. Naphthalene
B. Furan
C. Benzene
D. Anthracene

Ans: B. Furan

Question 3.

What is the atomic number of mercury?

A. 32
B. 41
C. 63
D. 80

Ans: D. 80

Question 4.

The chemical name of quartz is

A. Calcium oxide
B. Calcium phosphate
C. Sodium phosphate
D. Sodium silicate

Ans: D. Sodium silicate

Question 5.

Among the following, carbonate ore of Zinc is

A. Zinc blende
B. Calamine
C. Sphalerite
D. Zincite

Ans: B. Calamine

Question 6.

In organic compounds, nitrogen is estimated by

A. Carius method
B. Victor-Meyer’s method
C. Liebig’s method
D. Dumas method

Ans: D. Dumas method

Question 7.

Which of the following molecules has a bond order of 2.5?

C. F2

Ans: C. F2

Question 8.

What is the most common salt in sea water ?

A. Calcium carbonate
B. Potassium chloride
C. Sodium chloride
D. Magnesium sulphate

Ans: C. Sodium chloride

Question 9.

The metal used for making aircrafts and rockets is

A. Lead
B. Aluminium
C. Nickel
D. Copper

Ans: C. Nickel

Question 10.

Heavy metals got their name because compared to other atoms they have

A. Higher densities
B. Higher atomic masses
C. Higher atomic numbers
D. Higher atomic radii

Ans: B. Higher atomic masses

Question 11.

An element of atomic no. 29 belongs to

A. S-block
B. D-block
C. P-block
D. F-block

Ans: B. D-block

Question 12.

Fertiliser having high nitrogen content is :

A. Urea
B. Ammonium sulphate
C. Ammonium nitrate
D. Calcium citrate

Ans: C. Ammonium nitrate

Question 13.

The compound that has the least value for octane number is :

A. 2-methyl heptane
B. Iso-octane
C. 2,2-dimethyl hexane
D. N-heptane

Ans: D. N-heptane

Question 14.

Which one of the following elements exhibits the greatest tendency to lose electrons ?

A. Fluorine
B. Lithium
C. Oxygen
D. Zinc

Ans: B. Lithium

Question 15.

Which metal is the heaviest in periodic table among the following ?

A. Os
B. Pt
C. Pb
D. W

Ans: A. Os

Question 16.

Which one of the following is found in kidney stones?

A. Sodium oxalate
B. Calcium oxalate
C. Sodium chloride
D. Calcium acetate

Ans: B. Calcium oxalate

Question 17.

The length of double bond is _ than single bond.

A. Shorter
B. Longer
C. Of same lenght
D. None of the above

Ans: A. Shorter

Question 18.

Which one is heaviest naturally occurring element of the periodic element?

A. Iron
B. Thorium
C. Rhodium
D. Uranium

Ans: D. Uranium

Question 19.

Ruby and sapphire are oxides of

A. Copper
B. Tin
C. Iron
D. Aluminium

Ans: D. Aluminium

Question 20.

Which one of the following is not present in cement ?

A. Clay
B. Alumina
C. Alum
D. Gypsum

Ans: C. Alum

Chemistry GK MCQs all set

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