Question # 1

The unit of rate constant for a zero order reaction is

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Liter sec^-1

Liter mol^-1sec^-1

Mol liter^-1sec^-1

Mol sec^-1

The weight of 11.2 liters of CO₂ at S.T.P. would be

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88 g

44 g

32 g

22 g

Propyne on hydrolysis in presence of H₂SO₄ and HgSO₄ gives

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Acetaldehyde

Actone

Formaldehyde

None

Reaction of acids with alcohols is also known as

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Esterification

Saponification

Alkalization

None

Setting of cement is an

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Exothermic reaction

Endothermic reaction

Neither exothermic nor endothermic

None

In crystal structure of sodium chloride the arrangement of CI^- ions is

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Fee

Both fee and bcc

Bee

None of these

Ammonia gas used directly as a fertilizer is injected into the soil at a depth of about

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Two inches

Three inches

Five inches

Six inches

ΔH_{Neutralisation} is always

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Positive

Negative

Zero

Positive or negative

The treatment of benzene with isobutene in the presence of sulphuric acid give

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Isobutyl benzene

Tert-Butyl benzene

n-Butyl benzene

no reaction

Which one of the following compounds does not exist?

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NCI₅

AsF₅

SbCI₅

PF₅

Which of the following alcohols cannot be produced by treatment of aldehydes or ketones with NaBH₄ or LiAIH₄?

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1-Propanol

2-Propanol

2-Methyl-2-propanol

Ethanol

For most of the chemical reactions the rate of reaction

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Increase as the reaction proceeds

Decrease as the reaction proceeds

May increase or decrease during the reaction

Remains constant as the reaction proceeds

Aldehydes are produce in atmosphere by

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Oxidation of secondary alcohols

Reduction of alkenes

Reaction of oxygen atoms with hydrocarbons

Reaction of oxygen atoms with ozone.

Bleaching action of bleaching powder is due to the liberation of

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O₂

OCl^-

Cl₂

Cl^-

Which of the following cannot be produced by acidic dehydration of alcohols?

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Ethers

Aldehyde

Alkyl Hydrogen sulphate

Alkene

The disaccharide present in milk is

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Sucrose

Maltose

Lactose

Cellobiose

With increasing principle quantum number, the energy difference between adjacent energy levels in H atom

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Decreases

Increases

Remain constant

Decreses for low value of Z and increases for higher value of Z.

How many moles of Helium gas occupy 22.4 L at 0°C at a atm. Pressure?

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0.11

0.90

1.0

1.11

The density of nitrogen gas prepared from air is slightly greater than that of nitrogen prepare by a chemical reaction form a compound of nitrogen due to the presence of the following in aerial nitrogen.

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Argon

CO₂

Some nitrogen molecules analogous to O2

Greater amount of nitrogen molecules derived from N¹⁵isotope.

Which of the following has no tin in its composition?

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Solder

Bronze

Brass

Tin stone

Which of the following with aqueous KOH will give acetaldehyde?

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1, 2-Dichloroethane

1, 1-Dichloroethane

Chloroacetic acid

Ethyl chloride

When electrons revolve in stationary orbits,

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There is no change in energy level

They vecome stationary

They are gaining kinetic energy

There is increase in energy

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