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Chemistry

Chemistry
The chief constituent of vinegar is

Formic acid
Oxalic acid
Salycylic acid
Acetic acid

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Chemistry
The chemical name of ‘Common salt’ is

Sodium chloride
Calcium chloride
Ammonium chloride
Sodium nitrate

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Chemistry
Petroleum is a mixture of

Salts
Polymers
Elements
Hydrocarbons

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Chemistry
Which of the following has pH value 7?

HCl
H2SO4
Sodium Carbonate
Pure Water

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Chemistry
Which of the following vegetable oils does not contain essential fatty acids ?

Mustard oil
Groundnut oil
Sunflower oil
Coconut oil

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Chemistry
The gas present in the stratosphere which filters out some of the sun's ultraviolet light and provides an effective shield against radiation damage to living things is

methane
oxygen
helium
ozone

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