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Chemistry

Chemistry
A pungent smell often present near the urinals is due to

Chlorine
Urea
Ammonia
Sulphur-di- oxide

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Chemistry
When a spoon is to be electroplated with nickel the spoon is

Dipped in a nickel sulphate solution
Made cathode and a pure nickel red, the anode
Coated with nickel sulphate and dried
Made anode and a pure nickel rod, the cathode

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Chemistry
Atomic number is the number equal to

Electrons
Neutrons
None of these
Protons

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Chemistry
The main chemical constituent of the oil of cardamom which is responsible for flavour of this oil is

engenol
cineole
geraniol
limonene

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Chemistry
If the equilibrium constants for the systems H2 + I2 ? 2HI and 2HI ? H2 + I2 are K1 and K2 respectively, the relationship between K1 and K2 is :

K 1 = 1 /K2
K1 = K2/2
K1 = 2K2
K1 = K2

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Chemistry
Ruby and sapphire are oxides of

Copper
Iron
Tin
Aluminium

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