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)