Marsh gas is:
A. Nitrogen
B. Ethane
C. Methane
D. Hydrogen
The average salinity of sea water is:
A. 3%
B. 3.5%
C. 2.5%
D. 2%
Tetraethyl lead is used as:
A. Pain Killer
B. Fire Extinguisher
C. Mosquito Repellent
D. Petrol Additive
Electric bulb filament is made of:
A. Copper
B. Aluminium
C. Lead
D. Tungsten
Oxidation state +1 for phosphorous is found in:
A. H3PO3
B. H3PO4
C. H3PO2
D. H2P2O7
SO2 reacts with Cl in sunlight to form:
A. Sulphur dioxide
B. Sulfuryl chloride
C. Sulphonyl chloride
D. All of the above
Argon gas was discovered by:
A. Rayleigh
B. Ramsay
C. Lockerey
D. Dalton
The number of lone pairs in XeOF4 is:
A. O
B. 1
C. 2
D. 3
The O-O linkage is present in:
A. H2S2O3
B.H2SO8
C. H2S4O6
D. H2 S2 O6
Poisonous gas present in the exhaust fumes of a jet plane is:
A. Flurocarbon
B. Carbon monoxide
C. Methane
D. C2H2
