Question # 1

The process of removal of gangue form the ore is technically known as:

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concentration

purification process

metallurgy

refining

General formula of alkynes is:

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C_nH_n

C_nH_2n

C_nH_2n+2

C_nH_2n-2

Uric Acid is present in

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Apple

Fats

Urine

Grapes

Rapid growth of algae in water bodies is because of detergent having.

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Carbonate salts.

Sulphonic acid salts.

Sulphate salts.

Phosphate salts.

The % age of carbon is lignite is

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60

70

80

90

Carbon content in coke is.

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80%

98%

70%

88%

Which of the following gas is used to destroy harmful bacteria in water.

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Iodine

Chlorine

fluorine

Bromine

Percentage of carbon in peat is.

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50%

60%

70%

80%

Which is used to remove the grease stains from clothes?

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NaOH

KOH

Al(OH)₃

NH₄OH

Gelatin protein is found in.

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Blood

Skin

Heart

Bones

One of the hydrocarbons reacts with one mole of hydrogen to form a saturated hydrocarbon. What formula could be of the X.

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C₃H₈

C₆H₁₂

C₄H₁₀

C₇H₁₆

Stearic acid present in

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Apple

Fats

Urine

Grapes

Open chain compounds are also called:

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aliphatic compounds

alicyclic compounds

aromatic compounds

hydrocarbons

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