Sodium metal is kept under:
A). Petrol
B). Alcohol
C). Water
D). Kerosene
Which of the following is in liquid form at room temperature?
A). Lithium
B). Sodium
C). Francium
D). Cerium
Which of the following was to be discovered first in the chromospheres of the sun?
A). Krypton
B). Xenon
C). Neon
D). Helium
Most soluble in water is:
A). Camphor
B). Sulphur
C). Common salt
D). Sugar
The most important ore of aluminum is
A). Galena
B). Calamine
C). Calcite
D). Bauxite