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Chemistry

Chemistry
In which of the following substances all carbon atoms are quaternary in nature ?

Graphite
Napthalene
Teflon
Diamond

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Chemistry
The main buffer system of the human blood is

CH3COOH - CH3COO-
NH2CONH2 - NH2CONH+
H2CO3 - HCO3
H2CO3 - CO32-

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Chemistry
Sodium bicarbonate is commercially known as

Soda lime
Caustic soda
Washing soda
Baking soda

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Chemistry
If lime water is kept in the air, it turns milky due to presence of :

Oxygen
Sulphurdioxide
Nitrogen
Carbondioxide

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Chemistry
Detergents are

Sodium salts of fatty acids
None of these
Sodium salt of benzoic acid
Sodium salts of sulphonic acids

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Chemistry
Which of the following pollutants is main product of automobile exhaust ?

NO
Hydrocarbons
CO
CO2

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