A. Groups
B. Periods
C. Sets
D. Matrices
Chemistry MCQs
Which metallic element is liquid at room temperature?
A. Zinc
B. Nickel
C. Lead
D. Mercury
Water vapor is ?
A. A gas
B. A cloud droplet
C. A rain drop
D. A snowflake
The property of a substance to absorb moisture from the air on exposure is called____________?
A. Osmosis
B. Deliquescence
C. Efflorescence
D. Desiccation
Hydrogen peroxide (H2O2)______________?
A. Helps line up cell proteins
B. Is poisonous to tissues
C. Is often needed as a catalyst
D. Aids in the oxidation of glucose
The fraction of petroleum having boiling range 40-200°C is called _____________?
A. Kerosene
B. Gasoline
C. Petroleum ether
D. None of the above