Question # 1

Which types of reaction speed up gradually?

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Irreversible reactions

Reversibel reactions

Forward reactions

Decomposition reactions.

Traces of acetylene are present in coal gas about.

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0.06 %

0.08%

1.1%

90%

Which one of the following does ot contain protein

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Pulses

Potatoes

Beans

eggs

Global warming is because of.

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Absorption of infrared radiation emitted by earth surface.

Absorption of infrared radiation coming from sun.

Absorption of infrared Ultraviolet coming from the sun.

Emission of ultraviolet radiation from the earth's surface.

Dehydrohalogenation of vicinal-dihalides take place in the presence of.

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NaOH

KOH

NaCl

None of these

Chalco-Pyrite is an ore of:

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Copper

Silver

Iron

Aluminium

Which gas is used to destroy harmful bacteria in water?

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Iodine

Chlorine

Flourine

Bromine

The reduction of alkyl halides takes place in the presence of

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Zn/HCl

Na/HCl

Mg/HCl

Cu/HCl

Alkenes are produced in large amounts by cracking of.

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Natural gas

Petroleum

Benzene

xylol

Nucleic acids made up of long chain of.

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Nucleotide

Fatty acids

Amino acid

None of them

When bones are heated they give.

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Starch

Gelatin

Fats

Oils

Dynamic means, reaction is:

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In forward direction

Stop

In reverse direction

Still continuing.

Molecular formula of butane is

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C₄H₈

C₄H₁₀

C₄H₁₂

C₄H₆

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