What is the density ofargon gas at a temperature of 30°C and a pressure of 1.05 atm?

A. 1.65 g/l
B. 1.67 g/l
C. 1.68 g/l
D. None of the above

The number of atoms present in 21.6 gram of silver (atomic weight = 108) are same as the molecules in__________?

A. 1.8 gram of h2o
B. 12 moles of kmno4
C. 0.6n h2so4
D. 4.6 gram of c2h5oh

The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is ________ ?

A. Argon
B. Xenon
C. Helium
D. Krypton

The formula C6H5-CO-CH3 represents_______ ?

A. Acetone
B. Acetic acid
C. Acetophenone
D. Phenyl acetate

Poisonous gas present in the exhaust fumes of a jet plane is__________?

A. Flurocarbon
B. Carbon monoxide
C. Methane
D. C2h2

The gases used in different types of welding would include ___________?

A. Oxygen and hydrogen
B. Oxygen, hydrogen, acetylene and nitrogen
C. Oxygen, acetylene and argon
D. Oxygen and acetylene

The ozone molecule contains which type of bonding__________?

A. Dative bond
B. Covalent bond
C. Both a and b
D. Ionic bond

The O-O linkage is present in__________?

A. H2s2o3
B.h2so8
C. H2s4o6
D. H2 s2 o6

The number of lone pairs in XeOF4 is_________?

A. O
B. 1
C. 2
D. 3

Argon gas was discovered by_______?

A. Rayleigh
B. Ramsay
C. Lockerey
D. Dalton