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Chemistry

Chemistry
Curd is sour due to presenceof

Lactic acid
Oxalic acid
Tartaric acid
Acetic acid

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Chemistry
The iron ore which contains 72% of iron is :

Magnetite
Siderite
Haematite
Limonite

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Chemistry
Which of the following is not a greenhouse gas ?

Nitric oxide
Chlorofluorocarbon
Hydrogen
Carbon dioxide

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Chemistry
The absolute temperature of a gas is doubled and the pressure is reduced to half, the volume of the gas

Will increase four-fold
Will be doubled
Remains unchanged
Will be reduced to half

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Chemistry
The metal that is used as a catalyst in the hydrogenation of oils is

Pb
Pt
Cu
Ni

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Chemistry
The value of Avogadro Number is

6.023 × 1023
6.023 × 1024
6.023 × 1022
6.023 × 1025

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