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Chemistry

Chemistry
Basicity of boric acid, H3BO3 is

3
5
2
4

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Chemistry
Which of the following vitamins is generally excreted by human in urine?

Vitamin B
Vitamin D
None of these
Vitamin C

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Chemistry
Exposure to mixtures of chemicals are greater than expected on the basis of effects of exposure to each chemical individually. This is known as

Synergism
Independent
Antagonism
Additives

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Chemistry
Zinc sulphide is commonly used as

Fungicide
Herbicide
Rodenticide
Deodorant

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Chemistry
Gunpowder consits of a mixture of

Sand and TNT
Sulphur, sand and charcoal
Nitre, sulphur and charcoal
TNT and charcoal

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Chemistry
Which gas is used for converting vegetable oils into saturated fats ?

O2
Cl2
H2
SO2

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