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Chemistry

Chemistry
The chemical name of rat poison is

Zinc phosphide
Potassium cyanide
Lead nitrate
Zinc oxide

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Chemistry
Which of the following metals can displace copper from copper sulphate solution ?

Iron
Mercury
Gold
Platinum

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Chemistry
Alum is used as

An analgesic
A disinfectant
A purifier for water
A fertilizer

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Chemistry
Number of6.023 × 1020 atoms present in one mole of a gas at STP is

'6.023 × 10–20
6.023 × 1020
'6.023 × 10–23
6.023 × 1023

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Chemistry
Number of hydrogen atoms in a Glucose molecule

14
12
6
8

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Chemistry
Milk tastes sour when kept in the open for sometime due to the formation of

Carbonic acid
Lactic acid
Acetic acid
Citric acid

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MORE MCQ ON Chemistry

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