Question # 1

SN1 reaction usually occurs in

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Primary alkyl halides

Secondary alkyl halides

Tertiary alkyl halides

All of these

Which acid is used in the manufacture of synthetic fibre

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Formic acid

Oxalic acid

Carbonic acid

Acetic acid

S_N2 reactions can be carried out with

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Primary alkylhalide

Secondary alkyhalide

Tertiary alkylhalide

All of these

The most reactive alcohol when O-H bond breaks is

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Tertiary alcohol

Secondary alcohol

Primary alcohol

Methyl alcohol

Which furnace is used to prepared steel

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Blast furnace

Pudding furnace

Bessemer converter

Pyrite furnace

d -block elements which show anomalous configuration in first series are

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Cr and Ni

Cr and Cu

Cu and CO

Fe and Ni

In t-butyl alcohol, the tertiary carbon is bonded

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Three hydrogen atoms

Two hydrogen atoms

One hydrogen atom

No hydrogen atom

The resonating contributing structures of Benzene are

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2

3

5

7

The reactivity order of alkyl halides for a particular alkyl group is

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Fluoride > Chloride > Bromide > iodide

Chloride > Bromide > Fluoride > iodide

Bromide > iodide > chloride > Fluoride

Iodide > Bromide > Chloride > Fluoride

Which halogen will react spontaneously with Au(s) to produce Au³⁺

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Br₂

F₂

I₂

Cl₂

A caboxylic acid contains

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a hydroxyl group

a caboxyl group

a hydroxyl and carboxyl group

a carboxyl and an aldehyde group

The residence time of NO is

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Few hours

1 day

3 days

4 days

Phosphorus helps the growth of

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Root

Leaf

Steam

Seed

Industrially ethanal is prepared by air oxidation of.

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Ethane

Ethene

Ethyne

Acetic acid

During Nitration of Benzene the active nitrating agent is

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NO₃

NO₂⁺

NO₂

HNO₃

Which compound is the most reactive one

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benzene

ethene

ethane

ethyne

Which one the following a dihydric alcohol

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Ethanol

Cyclo hexanol

Glycerol

Glycol

Plastics are pollution problem because many plastics

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are made from petroleum

are very inflammable

burn to produce toxic fumes

decompose to produce toxic products

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