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Chemistry

Chemistry
Glycol is used to manufacture which of the following ?

Artificial silk
Terylene
Nylon
Rubber

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Chemistry
When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is

Oxygen
All of them
Hydrogen
Carbon dioxide

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Chemistry
Which one of the following is commonly used for pulp bleaching in the paper industry?

Hydrogen peroxide
Mild sulphuric acid
Glucose isomerase
Iodine and water

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Chemistry
In which of the following substances all carbon atoms are quaternary in nature ?

Diamond
Graphite
Napthalene
Teflon

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

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

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Chemistry
Which one of the following is used for dating very old objects of archaeological importance?

Radium
Phosphorus-31
Tritium
Carbon-14

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