Question # 1

The nature of enzyme is.

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Protein

Vitamin

Fats

Carbohydrate

Which carbohydrate is used directly by muscles for energy?

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Galactose

Lactos

Glucose

Fructose

Which salt is used as a table salt?

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NaCl

Na₂CO₃

Na₂SiO₃

NaCl

Which of the following is a poisonous gas.

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Oxygen

Ozone

Nitrogen

Carbon dioxide

Alkenes are produced in large amounts by cracking of.

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Natural gas

Petroleum

Benzene

xylol

Which one of the following is non- reducing in nature;

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glucose

fructose

starch

sucrose

In shoe polished, which chemical is used.

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Ethanol

Methanol

Carbon black

Formaldehyde

Which hydrocarbon decolorizes the pink colour of acidic solution of potassium permanganate?

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CH₄

C₂H₄

C₂H₆

C₂H₅

Lipids are macromolecules. They have characteristics except one of the following.

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They are high energy foods.

They are soluble in water.

They are poor conductor of heat.

They are esters of fatty acids.

Dehydrohalogenation takes place in the presence of .

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NaOH aqueous

Alcoholic KOH

Aqeous KOH

Alcoholic NaOH

The percentage of sun light absorbed by atmospheric gases is.

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2%

10%

18%

25%

Water dissolves Non-ionic compounds by:

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Ion-Ion forces

Dipole forces

Dipole - Dipole forces

Hydrogen Bonding

Alkanes give reaction only

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Addition

Decomposition

Substitution

Displacement

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