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Chemistry

Chemistry
Which of the following will replace hydrogen from acids to form salts ?

S
Na
P
Ag

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

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

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Chemistry
If we burn graphite,

It will not burn
It will change into diamond
No residue will be left
Residue will be left

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Chemistry
Freon' used as refrigerants is chemically

Chlorinated hydrocarbon
Fluorinated aromatic compound
Fluorinated hydrocarbon
Chlorofluoro hydrocarbon

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Chemistry
Which of the following is the petroleum wax ?

Carnauba wax
Paraffin wax
Jojoba wax
Bees wax

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Chemistry
The water pollution in river is measured by the dissolved amount of

Chlorine
Oxygen
Ozone
Nitrogen

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