Question # 1

The pressure of gas at constant temperature in a container of 2dm3 is 10 atm what will be its final pressure if it is connected with 10 dm3 container

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2 atm

1.6 atm

5 atm

I atm

Vegetable oil are

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unsaturated fatty acids

glycerides of unsaturated fatty acids

glycerides of saturated fatty acids

essential oil obtained from plants

Most of the universe consists of the matter in :

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Gaseous state

Liquid state

Plazma state

Solid state

Polymerisation of vinyl acetate is a type of:

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homopolymer

copolymer

ter polymer

All of these

Methyl cyanide, on boiling with mineral acids yield

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Acetic acid

Formic acid

Propanoie acid

Butanoic acid

A compound that has a nucleophilic carbon?

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C2H2

C2H4

C3H8

C6H6

Primary pollutants are:

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oxides of sulphur

oxides of carbon

oxides of nitrogen

All of these

Liquids are less common than solids and gases because

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They exist in narrow range of temperature and pressure

They have definite volume

Liquid molecules can slide past each other

Molecules contain three type of motion

General formula of carbohydrate is

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C_x(H₂O)_y+x

C_x(H₂O)_y

C_x(H₂O)_y-1

C_x(H₂O)_y+1

SiO₂ is an example of:

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metallic crystals

lonic crystals

a crystal whose structure depending upon the temperature

covalent crystals

Moles of protons in 20g of SO3

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10

20

40

80

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Neutrons are attracted by nucleus

Neutrons carry out nuclear reactions

Neutrons carry no charge

Neutrons are electromagnetic radiations

Self linkage of carbon to produce long chains

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isomerism

Polymorphism

Polymerization

Catenation

The degree of unsaturation in fats or oils is usually measured by numbers of grams of iodine required by 100 grmas of fat, this is called

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Oil number

Saturation number

Iodine number

Un saturation number

The percentage of carbon in different types of iron products is in the order of

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Cast iron > wrought iron > steel

Wrought iron > steel > cast iron

Cast iron > steel > wrought iron

Cast iron = steel > wrought iron

In lead accumulator the electrolyte is H₂SO₄solution is

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30% H₂SO₄

60% H₂SO₄

80% H₂SO₄

90% H₂SO₄

The reaction in which ketone is reduced to the alkane is called

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Kolb

Clemmensen

Cannizzaro

None

The oxyacids of phosphorus in which phosphorus has the lowest oxidiation state is

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Hypophosphorus acid

Orthophosphorus acid

Pyrophosphorus acid

Metaphosphorus acid

Which is not the affect of polluted air on environment

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Acid rain

Smog

Ozone

Global warming

The formula of secondary alcohol is

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R - OH

R - CH₂OH

R₂CHOH

R₃COH

When methane reacts with Cl₂in the presence of diffused light the products obtained are?

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Chloroform only

Carbon tetrachloride only

Chloromethane and dichloromethane

Mixture of a,b,c

When of the following is isolelectronic with krypton

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Ca⁺⁺

Al⁺⁺⁺

Br^-1

I^-1

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