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Chemistry

Chemistry
Which of the following metals is used in Space Crafts to withstand high temperatures ?

Pb
Ti
Ni
Fe

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Chemistry
Which is known as carbolic acid?

Ethanol
Acetic acid
Phenol
Oxalic acid

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Chemistry
The trans-uranium elements are the chemical elements with atomic numbers greater than

86
96
89
92

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Chemistry
The name of unreactive gas is

Nitrogen
Carbon dioxide
Oxygen
Hydrogen

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Chemistry
Water gas is the mixture of

Carbon monoxide and nitrogen
Carbon dioxide and hydrogen
Carbon dioxide and nitrogen
Carbon monoxide and hydrogen

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Chemistry
Maximum permissible concentration of total hardness in drinking water is

100
200
50
500

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