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Chemistry

Chemistry
Percentage of lead in lead pencils is

40
80
31-66

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Chemistry
Maximum permissible concentration of total hardness in drinking water is

200
100
50
500

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Chemistry
Number of hydrogen atoms in a Glucose molecule

14
6
12
8

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Chemistry
Detergents are

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

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Chemistry
Chloroform can be used as

Anaesthetic
Analgesic
Antibiotic
Antimalarial

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Chemistry
An element of atomic no. 29 belongs to

F-block
P-block
D-block
S-block

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MORE MCQ ON Chemistry

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