Question # 1

What is the most common catalyst used in hydrogenation of oils?

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cobalt

nickel

tungsten

copper

Carboxylic acid can be prepared from the reaction of Grigard's reagent with:

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Aldehydes

Ketones

Formaldehyde

CO₂

Which of the following is more reactive where 0-H bonds break

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P°alcohol

T° alcohol

S°alcohol

Cannot be predicated

Which pair of following pair is metalloid?

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Antimony and bismuth

Phosphorous and arsenic

Nitrogen and phosphorous

Arsenic and antimony

The boiling point of glycerin at 1 atmospheric pressure is:

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290°C

390°C

190C°

210°C

A fat with 18 carbon & no double bond will be

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Solid

Liquids

Gel like

None

The fibre which is made from acrylonitrile as monomers

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PVC

Rayon fibre

Acrylic fibre

Polyester fibre

Which is the least reactive of all the alkali metals

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Li

Na

K

Cs

Substances that tend to decrease the activity of enzymes are called

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coenzyme

activators

inhibitors

apoenzyme

Common names of carboxylic acids are given by then:

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Source

Person discovered

Place

Habit

Soda lime is often employed to remove both

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H2O and NO2

CO2, and NO2,

H2O and CO2

H2S and CO2

CFCs undergo homolytic fission by uv light in the stratosphere which radical could result from this irradiations of CHCICF₂Cl.

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CHF Cl C FCl

CH Cl CF₂Cl

CHF CF₂Cl

C FCl CF₂Cl

Which is not a nucleophile

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Benzene

Chlorine

Ethene

Ethanol

With increases of 10°C temperature the rate of reactiondoubles. This increase in rate of reactionis due to :

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Decrease in activation energy or reaction.

Decrease in number of collisions between reactant molecules.

Increase in activation energy of reactants.

Increase in number of effective collisions

Alkanes may be prepared by the reaction of alkyl halides with

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Alcohol

Carboxylic acid

Grignard reagents

None of these

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Rate = k[FeCl₃] [Kl]²

Rate = k[Fe⁺³][Cl^-1] [Kl]

Rate = k[Fe⁺³] [Cl^-1][K;]

Rate = k[Kl]³[FeCl₃]°

The number of electron pairs shared in carbon tetrachloride molecule is

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2

3

4

1

Which reaction is of condensation or addition elimination reaction?

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Ketol

Aldol

Cannizzaro

All of these

CO+ is an example of

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Stable molecule

Anionic molecule ion

Cationic molecular ion

Free radical

A common industrial solvent is a mixture of propanone; CH₃COCH₃, and pentyl ethanoate CH₃CO₂(CH₂)₄CH₃. Which reagent would have no effect on this solvent

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Na_(s)

NaBH₄

NaOH_(aq)

2,4-dinitrophenylhydrazine reagent

Give IUPAC name fo Acetone

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Ethanal

Propanone

Butanone

Propanal

The Zwitter ion is also called

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International salt

Internal salt

No salt

None of these

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