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Chemistry

Chemistry
The length of double bond is _______ than single bond

Of same lenght
Shorter
Longer
None of these

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Chemistry
Which method will be employed to test the hardness of water?

None of these
Distillation
Formation of lather with soap
Boiling

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Chemistry
Gypsum is used for improvement of:

Alkaline soils
Saline soils
Acidic soils
Podsols

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Chemistry
The filter over which sewage is sprinkled is called as

Intermittent sand filter
Contact bed
Trickling filter
Percolating filter

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Chemistry
The material known in commerce as Terylene is a

Blend of cotton and silk
Natural fibre
Modified natural fibre
Synthetic fibre

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Chemistry
When a spoon is to be electroplated with nickel the spoon is

Made anode and a pure nickel rod, the cathode
Dipped in a nickel sulphate solution
Made cathode and a pure nickel red, the anode
Coated with nickel sulphate and dried

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