Top 1000+ Solved Chemistry MCQ Questions Answer
Q. Limestone is a raw material used by which industry?
a. Aluminium
b. Fertilizers
c. Cement
d. Petrochemicals
Q. Atomic number of an atom gives the number of which of the following?
a. electrons
b. protons
c. neutrons
d. neutrons and protons
Q. Which one of the following metals does not react with water to produce Hydrogen?
a. Cadmium
b. Lithium
c. Potassium
d. Sodium
Q. Which of the following is not an ore of magnesium?
a. Carnallite
b. Dolomite
c. Calamine
d. Sea water
Q. Which of the following is usually not an air-pollutant?
a. Hydrocarbons
b. Sulphur dioxide
c. Carbon dioxide
d. Nitrous oxide
Q. Which of the following fuels causes minimum environmental pollution?
a. Diesel
b. Kerosene
c. Hydrogen
d. Coal
Q. The compound used in prickly-heat powder to prevent excessive sweating is –
a. Boric acid
b. Phosphoric acid
c. Carbonic acid
d. Sulphonic acid
Q. The oxygen liberated during Photosynthes is comes from -
a. Water
b. Carbon dioxide
c. Glucose
d. Chlorophyll
Q. Permanent hardness of water, due to sulphates of the metal, can be destroyed by the use of
a. Nitrates
b. Zeolites
c. Sulphonates
d. None of these
Q. Adding which substance gives blue colour to glass?
a. Manganese oxide
b. Cobalt oxide
c. Chromium oxide
d. Iron oxide
Q. Vinegar is .
a. diluted acetic acid
b. glacial acetic acid
c. glacial formic acid
d. diluted formic acid
Q. What is the product formed when sodium bicarbonate is heated strongly?
a. Sodium Carbonate
b. Sodium Hydroxide
c. Sodium Peroxide
d. Sodium Monoxide