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Chemistry

Chemistry
Basicity of boric acid, H3BO3 is

3
5
2
4

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Chemistry
Chemical name of vinegar is

Acetic acid
Formaldehyde
Ethanol
Acetone

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Chemistry
Find the odd one:

Slaked lime
Chalk
Limestone
Marble

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Chemistry
Which among the following is pure matter ?

Carbon–dioxide
Iron
Air
Brass

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Chemistry
The unit of ionic product of water (Kw) is :

Mol2 let-2
Mol-1 let-2
Mol-1 let-1
Mol2 let-1

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Chemistry
Which of the following is the maximum number of electrons that can be present in M-shell?

8
2
32
18

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