Question # 1

The percentage of protein in dry weight of cell.

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20%

40%

50%

70%

Water dissolves non-ionic compound by

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Ion-ion forces

Ion-dipole forces

Dipole -dipole forces

Hydrogen bonding.

Olefins is a Latin word meaning:

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inert

less reactive

oil forming

most reactive

Chemical formula of Stearic acid.

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C₁₅H₃₁COOH

C₁₇H₃₅COOH

C₁₅H₃₇COOH

None of them

Which one is used for alkaline batteries?

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NaOH

Ca(OH)₂

KOH

Mg(OH)₂

Such reactions which continue in both directions are called.

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Irreversible

Reversible

Nonreactive

Dynamic

Which one of the following is not faction of crude oil.

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Paraffin wax

Asphalt

Fuel oil

Petroleum coke

Building and Monuments lose their beauty and shine due to

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U.V radiations

Chlorofluoro carbons

Acid rain

IR radiations.

All water soluble metallic oxides have characteristic of:

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acidic

basic

neutral

amphoteric

The percentage by volume of nitrogen in dry gas is.

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78.09%

20.94%

0.93%

0.03%

Halogenation of methane produces following valuable chemical compounds used as solvents except.

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Carbonterachloride

Chloroform

Carbon Black

Chloromethane

A base is a substance which neutralizes and acid. Which of these substances is not a base?

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aqueous ammonia

Sodium chloride

Sodium carbonate

Calcium oxide

Which gas is emitted due to volcanic eruption?

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CO₂

SO₃

NO₂

H₂

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