General Studies

Objective type Questions with Answers on Chemistry

Objective type Questions with Answers on Chemistry

1-Which of the following is the formula for hydrosulfuric acid?

(A) H2S

(B) H2SO3

(C) H2SO4

(D) HSO4

(Ans: A)


2-Brass is an alloy made of?

(A) Cu, Fe

(B) Cu, Sn

(C) Cu, Ni

(D) Cu, Zn

(Ans: D)


3-99.9% pure copper can be achieved through?

(A) Dialysis

(B) Electrolysis

(C) Hydrolysis

(D) Pyrolysis

(Ans: B)


4-Those balloons released during the Independence Day on August 15th were filled with?

(A) Oxygen

(B) Carbon dioxide

(C) Hydrogen

(D) Helium

(Ans: C)


5-HCL, H2SO4 and HNO3 are considered as?

(A) Strong solvents

(B) Strong acids

(C) Weak acids

(D) Basic in nature

(Ans: B)


6-The gas which causes global warming is?

(A) O2

(B) CO2

(C) N2

(D) He

(Ans: B)


7-Pure water has a pH value of?

(A) 6.5

(B) 5.5

(C) 7.0

(D) 12

(Ans: C)


8-The atomic weight of Nitrogen is?

(A) 10

(B) 12

(C) 14

(D) 16

(Ans: C)


9-The molecular weight of oxygen is?

(A) 12

(B) 16

(C) 32

(D) 64

(Ans: B)


10-The relative atomic mass of an element is the result of comparing mass of one atom of the element to the …………… of the mass of carbon atom?

(A) 1/12

(B) 1/10

(C) 1/16

(D) 1/14

(Ans: A)


11-The relative strengths of acids and alkalis can be determined with the help of a?

(A) Litmus paper

(B) Methyl orange

(C) pH paper

(D) Phenolphthalein

(Ans: C)