Top 1000+ Solved Chemistry MCQ Questions Answer
Q. Greenhouse effect is caused by –
a. nitrogen
b. carbon dioxide
c. carbon monoxide
d. nitrogen dioxide
Q. Helium gas is used in gas balloons instead of hydrogen gas be-cause it is –
a. lighter than hydrogen
b. more abundant than hydrogen
c. non-combustible
d. more stable
Q. Aspirin is chemically known as –
a. methyl salicylate
b. hydroxysalicylate
c. acetylsalicylic acid
d. alkylsalicylic acid
Q. Dry powder fire extinguishers contain -
a. sand
b. sand and sodium carbonate
c. sand and potassium carbonate
d. sand and sodium bicarbonate
Q. Which type of glass is used for making glass reinforced plastic?
a. Pyrex glass
b. Flint glass
c. Quartz glass
d. Fibre glass
Q. Who invented radar?
a. Fred Morrison
b. A H Taylor and Leo C Young
c. Van Tassel
d. W. K. Roentgen
Q. In which following processes light energy is converted into chemical energy?
a. Respiration
b. Fermentation
c. Photosynthesis
d. Photorespiration
Q. What is the common characteristic of the elements of the same group in the periodic table?
a. Electrons in outer most shell
b. Total number of electrons
c. Total number of protons
d. Atomic weight
Q. Which of the following hormone is called emergency hormone?
a. Insulin
b. Adrenaline
c. Oestrogen
d. Oxytocir
Q. Polythene is industrially prepared by the polymerization of -
a. Methane
b. Styrene
c. Acetylene
d. Ethylene
Q. Molasses a by-product in the manufacture of sugar, is converted into -
a. alcohol
b. paper
c. fuel
d. pulp