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Chemistry

Chemistry
A thick paste of cement, sand and water is called

Concrete
Kiln
Mortar
R.C.C.

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Chemistry
Which metal does not undergo corrosion due to the formation of oxide layer?

Zinc
Iron
Aluminium
Copper

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Chemistry
1 carat of diamond is equal to

100 mg
100 g
200 mg
200 g

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Chemistry
A matured mammalian cell without nucleus is

Spermatozoan
Lymphocyte
Oocyte
Erythrocyte

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Chemistry
Methanoic and ethanoic acids can be distinguished by the action of

SOCl2
NaHCO3
Tollen's reagent
NaOH

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Chemistry
Silver halides are used in photographic plates because they are

Oxidised in air
Totally colourless
Reduced by light
Soluble in hyposolution

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