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Chemistry

Chemistry
Which gas is used for converting vegetable oils into saturated fats ?

O2
H2
Cl2
SO2

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Chemistry
The strongest acid of the following is

O-nitrophenol
P-chlorophenol
P-nitrophenol
M-nitrophenol

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Chemistry
Which of the following is not a method of preparing oxygen?

Decomposition of potassium permanganate
Fractional distillation of liquid air
Electrolysis of water
Decomposition of manganese dioxide

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Chemistry
Brass gets discoloured in air due to constant exposure in presence of:

Hydrogen sulphide
Aluminium phosphide
Hydrogenated wafers
Aluminium sulphide

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Chemistry
Which among the following is used to dilute oxygen in the gas cylinders used by divers ?

Helium
Krypton
Neon
Argon

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Chemistry
When there are two electrons in the same orbital, they have:

Opposite spin
No spin
Same or opposite spin
Same spin

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MORE MCQ ON Chemistry

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