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Chemistry

Chemistry
Which of the following is the main nitrogenous waste in humans ?

Ammonia
Urea
Uric Acid
Ammonium Nitrate

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Chemistry
Which of the following acts as best adsorbent?

Activated Coconut Charcoal
Carbon black
Charcoal
Activated Charcoal

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Chemistry
Which of the following is used as a preservative to protect processed food?

Sodium sulphate
Sodium metabisulphite
Saccharin
BHT

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Chemistry
Cinnabar is an ore/mineral of

Manganese
Molybdenum
Lead
Mercury

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

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Chemistry
Among the following, which is always found in free-state in nature?

Copper
Gold
Sodium
Silver

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