Top 1000+ Solved Chemistry MCQ Questions Answer
Q. The coloured discharge tubes for advertisement mainly contain -
a. Xenon
b. Argon
c. Helium
d. Neon
Q. Muscle fatigueisaccumulation of :(1) Pyruvic acid(2) Lactic acid(3) Oxalacetic acid(4) Uric acidQ.30) A mixture of water and alcohol can be separated by -
a. Filtration
b. Evaporation
c. Distillation
d. Decantation
Q. Setting of plaster of paris involves –
a. dehydration process
b. hydration to form other hydrates
c. oxidation process
d. reduction process
Q. The common name for the com-pound having formal NaOH is –
a. Caustic soda
b. Caustic potash
c. Soda ash
d. Sodium hydroxide
Q. Energy stored in a coal is -
a. kinetic energy
b. potential energy
c. chemical energy
d. nuclear energy
Q. Which of the following is the most common element in the Universe?
a. Nitrogen
b. Oxygen
c. Hydrogen
d. Carbon
Q. wo elements which are used to absorb neutrons to control the chain reaction during nuclear fission are -
a. Boron and Cadmium
b. Boron and Plutonium
c. Cadmium and Uranium
d. Uranium and Boron
Q. The most commonly used chemicals in the artificial rainmaking or cloud seeding are
a. Silver Iodide (AgI)
b. Sodium Chloride (NaCl)
c. Dry Ice (Frozen CO2)
d. All of the above
Q. Which of the following is not a greenhouse gas?
a. Hydrogen
b. Carbon dioxide
c. Nitric oxide
d. Chlorofluorocarbon
Q. Which among the following is the objective of the Methyl tert-butyl ether (MTBE) mixingwith Petroleum?
a. Raise Octane Number
b. Antioxidant Stabilizer
c. Lead Scavanger
d. Fuel Dye
Q. The most important contributor of sea salt is ____?
a. Rivers
b. Salty Rocks at bottom of sea
c. Aquatic animals in Sea
d. Atmosphere around sea
Q. Which among the following elements are generally find in free state?
a. Group 11 elements
b. Group 12 elements
c. Group 13 elements
d. Group 14 elements
Q. Which among the following would cause the bright red colur due to bursting of crackers?
a. Strontium
b. Sodium
c. Suphur
d. Magnesium
Q. Who among the following scientists had discovered Radium?
a. Marie Sklodowska-Curie and Pierre Curie
b. André-Louis Debierne
c. Kasimir Fajans
d. Oswald Helmuth Göhring