Question # 1

Aromatic compounds are given this name because of;

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smell they have

slippery touch they have

bitter taste they have

sour taste they have

Petroleum fraction having composition C₇to C₁₀IS called

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Petroleum gas

Petroleum Ether

Kerosine oil

Gasoline or petrol

How much amount of sunlight reaches up to earth and absorbed:

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26%

32%

50%

18%

Ethyne is oxidized by alkaline KMnO₄ then ....... hydroxyl group add to the triple bond.

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Two

Three

Four

Five

Which one of the following is not a fossil fuel?

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Coal

Natural gas

Bio gas

Petroleum

The water which produces good lather with soap is called:

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soft water

hard water

heavy water

typical water

On which base atmosphere is divided into four regions?

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Change in pressure

Change in rediation

Change in temperature

Change in volume

Which of the following is a secondary pollutant.

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CO₂

CO

SO₃

HF

Which gas saves the surface of earth from ultra violet radiation?

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CO₂

CO

N₂

O₃

Earth has natural systems.

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One

Two

Three

Four

Triglycerides are fatty acids.

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Unsaturated

Saturated

Both of them

None of them

Traces of acetylene are present in coal gas about.

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0.06 %

0.08%

1.1%

90%

Water dissolves Non-ionic compounds by:

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Ion-Ion forces

Dipole forces

Dipole - Dipole forces

Hydrogen Bonding

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