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Chemistry

Chemistry
When formaldehyde and potassium hydroxide are heated, we get

Ethyl formate
Methyl alcohol
Methane
Acetylene

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Chemistry
A potato tuber has been cut into two halves. A few drops of iodine solution are placed on the cut surface of one of the halves. What colour change will be noticed?

From brown to orange-red
From brown to blue-black
From pink to blue-green
From blue to pink

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Chemistry
Coating of solid waste with impervious material is known as

Chemical fixation
Capping
Landfill
Encapsulation

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Chemistry
Which one of the following chemicals helps in fruit ripening?

Atrazine
Isoproturan
Malathion
Ethephon

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Chemistry
Bleaching action of moist sulphur di-oxide is because of its

Oxidising property
Reducing property
Acidic property
Basic property

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Chemistry
The compounds formed when hydrogen combines with p-block elements are called

Molecular hydrides
Polynuclear hydrides
Ionic hydrides
Metallic hydrides

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MORE MCQ ON Chemistry

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