Top 1000+ Solved Chemistry MCQ Questions Answer
Q. When a metal is heated in a flame, the electrons absorb energy and jump to higher energy state. On coming back to the lower energy state, they emit light, which we can observe in -
a. Raman spectra
b. Absorption spectra
c. Emission spectra
d. Fluorescence
Q. Which of the following gases is produced due to incomplete combustion of fuel?
a. Carbon Dioxide
b. Carbon Monoxide
c. Methane
d. Ethane
Q. Acid used in an automobile battery?
a. Sulphuric acid
b. Hydrochloric acid
c. Nitric acid
d. Citric acid
Q. Aquaregia is a mixture of the following in the ratio 1 : 3 by volume–
a. cone. HNO3 and cone. HCL
b. conc. HNO3 and conc. H2SO4
c. dil. HCl and dil. HNO3
d. cone. HCl and cone. HNO3
Q. In deep-sea diving, divers use a mixture of gases consisting of oxygen and –
a. hydrogen
b. nitrogen
c. argon
d. helium
Q. Nucleons are regarded as composites sub-particles known as –
a. Mesons
b. Quarks
c. Leptons
d. Photons
Q. If Metal A displaces Metal B from its solution, then Metal A .
a. is more reactive than B
b. is less reactive than B
c. is heavier than B
d. has the same reactivity as B
Q. The strongest oxidizing agent among the following is:
a. Chlorine
b. Iodine
c. Fluorine
d. Oxygen
Q. A mixture of carbon monoxide and hydrogen is called -
a. Producer gas
b. Water gas
c. Natural gas
d. None