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Chemistry

Chemistry
Which of the following is ozone depleting pesticide ?

Ethylene ozonide
Benzene
D.T.
Methyl bromide

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Chemistry
The liquid waste from kitchens and baths, of residences is known as :

Domestic sewage
Storm water
Sullage
Refuse

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Chemistry
The green colour seen in firework displays is due to the chloride salt of :

Strontium
Barium
Calcium
Sodium

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Chemistry
Which of the following is not present in RNA

Uracil
Phosphate
Thymine
Ribose

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Chemistry
Copper is refined by

Roasting
Zone refining
Oxidation
Electrolysis

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Chemistry
The organic reaction represented by equation CH3 - CH = O + H2NOH gives CH3 - CH - NH + H2O is an example of

an elimination reaction
an addition reaction
an oxidation reaction
a condensation reaction

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