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Chemistry

Chemistry
The number of electrons presents in H+ is

one
zero
three
two

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Chemistry
Benzene cannot undergo :

Oxidation
Elimination
Substitution
Addition

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Chemistry
PH value between 6.5-7.5 makes the soil

Neutral
Basic
Acidic
None of these

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Chemistry
Copper is refined by

Zone refining
Electrolysis
Oxidation
Roasting

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Chemistry
What is the product formed when sodium bicarbonate is heated strongly?

Sodium Hydroxide
Sodium Peroxide
Sodium Monoxide
Sodium Carbonate

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Chemistry
The name of plastic polymer from which combs, toys, bowls etc., can be made, is

Teflon
Polystyrene
Metallic polysulphides
Polyurethane

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