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Chemistry

Chemistry
The major constituent of gobar gas is

Carbon dioxide
Isobutane
Methane
Butane

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Chemistry
Sulphuric acid is

Tribasic
Dibasic
Monobasic
Tetrabasic

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Chemistry
Which of the following is used to remove rust stains on cloth?

Kerosene
Petrol
Lime
Oxalic acid solution

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Chemistry
Which one of the following elements is used in the manufacture of safety matches?

Sodium
Silicon
Graphite
Phosphorus

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Chemistry
The metal ion present in Vitamin B12 is

Iron
Cobalt
Nickel
Zinc

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Chemistry
Milk is a

Metal
Mixture
Element
None of these

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