Question # 1

Composition of carbon in the diesel oil.

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C₇-C₁₀

C₁₀-C₁₂

C₁₃-C₁₅

C₁₅-C₁₈

Which one of the ore of copper?

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Copper glance

Chalcopyrite

Both a and b

None of these

Bases gave taste:

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Bitter

Sweetsh

Sour

Saltish

Alkanes are produced in large amounts by cracking of

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Natural gas

Petroleum

Benzene

Xylol

Our planet earth consists of ____________ natural Spheres.

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1

4

6

8

Which is a Lewis base?

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H⁺

NH₄

BF₃

AlCl₃

According to Lewis concept, acid is a substance which.

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Can donate protons

Can donate an electron pair

Can accept protone

Can accept electron pair

The order of reactivity of hydrogen halides with alkenes is.

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HI>HBr

HBr>HI

HCl>HBr

HBr < HCl

Depending upon temperature variation, atmosphere ins divided into how many regions?

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1

2

3

4

The recombination of O and O₂ in mid stratosphere is an

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Exothermic reaction

Endothermic reaction

Heat absorbing process

None of these

Gypsum in water is.

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Sparingly soluble

Insoluble

Highly soluble

None of them

Which compound do not produce in the halogenation of methane.

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Chloroform

Carbon tetrachloride

Carbon black

Chloromethane

Higher concentration of CO causes.

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Fatique

Headache

Both of them

None of them

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