(A) Butane
(B) Ethane
(C) Methane
(D) Acetylene
Tag: Inorganic Chemistry
Helium gas is used in gas balloons instead of hydrogen gas because it is?
(A) More abundant than hydrogen
(B) Lighter than hydrogen
(C) Non combustible
(D) More stable
Water is not effective in extinguishing a fire caused by petrol because?
(A) Water and petrol react chemically
(B) Water and petrol are miscible with each other
(C) Flame is too hot for water to cool it down
(D) Water and petrol are immiscible with each other and petrol which forms the upper layer continues to bum
What is the percentage of lead in lead pencils?
(A) Zero
(B) 31-66
(C) 40
(D) 80
Metal extracted from seawater is?
(A) Beryllium
(B) Potassium
(C) Magnesium
(D) Aluminium
Most abundant inert gas in the atmosphere is?
(A) Argon
(B) Helium
(C) Neon
(D) Krypton
Denatured spirit is ethanol mixed with?
(A) Water
(B) Kerosene
(C) Petrol
(D) Pyridine
Chemical name of common salt is?
(A) Calcium chloride
(B) Ammonium chloride
(C) Sodium chloride
(D) Sodium nitrate