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Chemistry

Chemistry
Which of the following is also used as a Bio fertilizer?

Uric Acid
Ammonia
None of these
Urea

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Chemistry
The green colour seen in firework displays is due to the chloride salt of :

Sodium
Calcium
Barium
Strontium

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Chemistry
Diamond is harder than graphite because of :

Difference of crystalline structures
Tetrahedral structure of diamond
None of these
Difference in layers of atoms

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Chemistry
Which of the following is used as anesthetic ?

NO
N2O
NH3
NO2

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Chemistry
Mixture can be

Heterogeneous
Both A and B
Homogeneous
Pure substance

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Chemistry
Iodine value is used to estimate

Hydroxyl groups in oil
Unsaturation in oil
Carboxylic groups in oil
Alkali content in oil

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