Question # 1

Lactic acid founds in:

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Citrus fruits

Sour milk

Rancid Butter

Apple

Molecular formula of butane is

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C₄H₈

C₄H₁₀

C₄H₁₂

C₄H₆

Incomplete combustion of alkanes produce.

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Carbon dixoide only

Carbon monoxide only

Carbon monoxide carbon black and water

Carbon dioxide and carbon black

Oxidation of alkenes produce.

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Glyoxal

Glycol

Oxalic acid

Formic acid

Ozone is an allotropic form of

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Carbon

Oxygen

Sulphur

Phosphorous

Lewis acid-base concept have the following characteristics except:

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formation of an adduct

Formation of a co-ordinate covalent bound

Donation and acceptance of an electron pair

Donation and acceptance of a proton

Acidic solutions have pH value.

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Less than 7

Greater than 7

equal to 7

None of these

Infrared radiation emitted by the earth are absorbed by?

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CO₂,H₂O

N₂,O₂

CO₂,N₂

O₂,CO₂

Oils and fats are esters of large chain fatty acids with.

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Glycogen

Glucose

Starch

Glycerol

The earth atmosphere is getting hotter because of :

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SO₂

O₃

CO₂

CO

The substances formed during the chemical reaction are called.

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Product

Reactants

Radicals

Element

The % age of carbon is bituminous is

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60

70

80

90

A disease is caused by excess of bile pigments in the blood is.

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Typhoid

Jaundice

Cholera

Dysentery

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