Top 1000+ Solved Chemistry MCQ Questions Answer
Q. Haemoglobin is used to transport in humans.
a. Oxygen
b. Carbon Dioxide
c. Both are correct
d. Both are incorrect
Q. Commercial nitric acid is coloured because it contains dissolved –
a. Oxygen
b. Nitrous oxide
c. Nitrogen dioxide
d. Coloured impurities
Q. Fertiliser having high nitrogen content is –
a. Urea
b. Ammonium sulphate
c. Ammonium nitrate
d. Calcium citrate
Q. Bhopal has tragedy is associated with leakage of –
a. carbon dioxide
b. nitrogen dioxide
c. sulphur dioxide
d. methyl isocyanate
Q. Nucleus of an atom consists of.
a. Proton
b. Neutron
c. Proton and Neutron
d. Electron, Proton and Neutron
Q. Where does the oxygen that keeps us alive come from?
a. Carbon dioxide
b. Carbonates absorbed from soil
c. Oxides of minerals
d. Water
Q. The gas used for artificial fruit ripening of green fruit is –
a. Ethylent
b. Acetylene
c. Ethane
d. Methane
Q. Magnets attract magnetic substances are iron, nickel, cobalt, etc. They can also repel -
a. paramagnetic substances
b. ferromagnetic substances
c. diamagnetic substances
d. non-magnetic substances
Q. Atomic mass of Sulphur is 32u. The number of moles in 16 games of Sulphur is:
a. 1 mole of Sulphur
b. 0.5 moles of Sulphur
c. 0.75 moles of Sulphur
d. 0.25 moles of Sulphur
Q. A metal is exposed to the atmosphere for some time. It becomes coated with green carbonate. The metal must be –
a. silver
b. copper
c. aluminium
d. zinc
Q. Whic of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch lights, electric shavers, etc.?
a. Iron and cadmium
b. Nickel and cadmium
c. Lead peroxide and lead
d. Zinc and carbon
Q. Iodized salt is beneficial for –
a. lowering of blood pressure
b. prevention of dehydration
c. thyroid function
d. salivary glands
Q. Which of the following chemicals is used in photography?
a. Aluminium hydroxide
b. Silver bromide
c. Potassium nitrate
d. Sodium chloride