Question # 1

CH3CH2CH2OH--------A---------B Here B is

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Propyne

Propanal

Propene

Propane

Rusting of iron metal Fe occurs when Fe gets converted into Fe2O3 What happen with Fe?

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F'e is neutralized

Fe is sublimed

Fe is reduced

Fe is oxidized

1 gram formula refers to

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Amount in grams equivalent to 1 mole of a atom

Amount in grams equivalent to 1 mole of a covalent compound

Amount in grams equivalent to 1 mole of a ionic compound

Amount in grams equivalent to 1 mole of an ion

Which of the following represents peptide linkage

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-C=N-

-CO-NH-

-CH₂-NH-

-CH-NH-

Many petroleum products are:

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coloured

colourless

testy

poisoinous

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

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cobalt

nickel

tungsten

copper

The bonding which occurs among polar covalent molecules containing H and one of the small electronegative element such as O, F or N is called

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bridge bonding

metallic bonding

hydrogen bonding

Ionic bonding

Which of the following is not a postulate of the kinetic theory of gases?

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when gas particles collide, their total kinetic energy increases

gases consist of molecules in a constant state of random motion

when gas particles collide their total kinetic energy does not change at all

The gas particles travel in straight lines unit they collide with one another or with the walls of the container

Substance that does not show the process of sublimation is

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K2Cr2O7

iodine

naphthalene

NH4CI

One statement of isomorphism is incorrect

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they have different chemical properties

they have same physical properties

they have same atomic ratio

they have definite geometric shape

Choose the gas law which gives relationship between volume and pressure:

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Bolye,s law

Graham,s law

Dalton,s law

Charles,s law

Dipole moment of CO molecule is:

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0.0

1.112 D

0.112 D

2.112 D

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Pressure change

Temperature change

Concentration change

Catalyst

Closed chain compound can be classified into

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Homocyclic

Hetrocyclic

Aliphatic

Both a and b

The liquid obtained after passing the mixture through filter paper is termed as:

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Extract

Residue

Filtrate

Sample

Two or more similar monomers combine to form:

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Homopolymer

Copolymer

Ter polymer

Thermoplastic polymers

The major components of coal gas are

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Hydrogen and methane

Ethane and carbon monoxide

Nitrogen and ethane

Ethane and carbon dioxide

A fuel has the same knocking property as a mixture of 70 isooctane (2, 2, 4- trimethyl pentane) and 30% n-heptane by volume the octane number of the fuel is

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100

70

50

40

When copper is allowed to react with HNO₃, the reaction is slow in the beginning, finally becomes very fast. It is due to the formation of an auto catalyst which is

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Cu(NO₃)₂

CuO

O₂

HNO₂

Carboxyl compounds have functional group:

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R-C-X

R-CH=O

RCOR

All

Which is made by coordinate covalent bond

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H₃O⁺

H₂O

CH₄

HCl

Ricket is caused due to the deficiency of vitamin

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A

D

B

E

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