Question # 1

Amount of product formed increases with time, this statement is true for reactions-------with kinetics

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1s order

3rd order

zero order

Any order

Sudden expansion of gas molecule cause cooling because

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Expansion release some amount of energy

During expansion new force of attraction are developed and energy is released

During expansion force of attraction between closest molecules break and energy is used

Kinetic energy of gas molecules increases

CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy

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10,000

20,000

100,000

50,000

Critical temperature of argon's gas is low. the reason is that

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it contains four lone pairs

it is mono atomic gas

it has as smell signed

its polarizability is low

In [Ti (H2O)]3+ which colour is transmitted

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Yellow

Blue and red

Blue and yellow

red and yellow

Water which forms scum with soap is called

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Hard water

Soft water

Distilled water

Un distilled water

How many allotropic forms are present in carbon?

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Two

Four

Three

Five

The boiling of water may be 120°C, when the external pressure is

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greater than 760 torr

less than 760 torr

equal to 760 torr

variable

During space flights, astronauts ohlained water from

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Nickel cadmium cells

Lead accumulator

Fuel Cell

Alkaline battery

Glass is a

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Micro-crystalline solid

Super-cooled liquid

Gel

Polymeric mixture

How many kinds of space lattices are possible in a crystal?

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23

7

230

14

Which gasses are produced from landfills

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NH₃

H₂S

N₂

All of these

The unit of rate constant k is the same as that of the rate of reaction in

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First order reaction

Second order reaction

Third order reaction

Zero order reaction

The solubility product of AgCl is 2.0 x 10^-3 mol² dm^-6 , The maximum concentration of Ag ion in the solution is :

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2.0 x 10^-10 mol dm^-3

1.41 x 10^-10 mol dm^-3

1.0x 10^-10 mol dm^-3

4.0x 10^-10 mol dm^-3

Carbon monoxide is pollutant as it

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Inactivates nerves

Inhibits glycolysis

Combines with oxygen

Combines with hemoglobin

Hybridized in carbon is:

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sp

sp²

sp³

d²sp

A compound A has a molecular formula C₂Cl₃OH. It reduces Fehling solution and on oxidation produces a monocarboxylic acid B.A can also be obtained by the action of Cl₂on Ethanol. A is

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Chloral hydrate

CHCl₃

CH₃Cl

Chloroacetic acid

Which of the following will have the highest boiling point?

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Methanal

Ethanal

Propanal

2-Hexanone

In water the most important oxidizing agent is dissolved molecular oxygen which ranges from

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2 - 4 ppm

4 - 6 ppm

2 - 5 ppm

4 - 8 ppm

Which of the following has greatest tendency to lose electron?

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F

Fr

S

Be

Ethyl alcohol gives ethyl chloride with the help of

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SOCl₂

NaCl

Cl₂

KCl

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Temperature is increased

Pressure is increased

HCl is added

HCl is removed

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