Question # 1

London forces are more affective at

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low temperature

high temperature

low pressure

low temperature and high pressure

The best concentration unit used for K⁺ ions present in potable water is

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ppm

Mole fraction

Molarity

Molality

Pressure remaining constant at which temperature the volume of a gas will become twince of what it is at 0∘C.

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546∘C

200∘C

546K

273K

The number of resonating structures of phenoxide ion are

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3

5

6

4

Which of the following is primary alkyl halide

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IsopropyI halide

Sec-butyl halide

Tert-buryi halide

Neo-pentyl halide

Which is not the affect of polluted air on environment

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acid rain

smog

ozone

global warming

Chose a point which is not included in the components of environment

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Stratosphere

Hydrosphere

Lithosphere

Biosphere

Some of crystals are good conductors of heat and electricity, they may be

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ionic in nature

of metallic character

covalent in nature

of molecular nature

Which isomer of C4H9Br will produce 2-methyl propane-2-ol on treatment with aqueous KOH

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n-butyI bromide

Sec-butyI bromide

Isobutyl halide

Tertiary butyl chloride

When graph is plot between P and 1/V at constant temperature. A straight line obtains which move toward ______ when temperature increase

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Pressure axis

Volume axis

1/V axis

1/P axis

Geometry of NH3 is

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^Tetrahedral

Square planer

Pyramidal

Linear

The wave length of visible light is 500 nm. In S.I. unit this value is

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5 x 10^-8m

5 x 10^-9m

500 x 10^-7m

500 x 10^-9m

If four moles of sulpur dioxide are oxidised to sulphur trioxide, how many moles of oxygen molecules are required

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0.5

1.0

1.5

2.0

Zeotropic mixture

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Obey Henry's law

Obey Raoult's law

Does not obey Raoult's law

Obey Dalton's law

Which of these polymers is an addition polymer

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Nylon 6,6

Polystyrene

Terylene

Epoxy resin

Compounds having the same molecular formula, but different functional groups show

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Metamerism

Position isomerism

Chain isomerism

Functional group isomerism

Reduction with aluminium isopropoxide in excess of Isopropyl alcohol is called Meerwein Ponndroff-Verley reduction (MPV). What will be the final product when cyclohex-2-enone is selectively reduces in MPV reaction?

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Cyclohexanol

Cyclohex-2-enol

Cyclohexanone

Benzene

Ozone is not

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An allotrope

A powerful oxidizing agent

Paramagnetic

A bent molecule

Potassium ferrocyanide is a

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Mixed salt

Double salt

Complex salt

Normal salt

Dehydration of ethyl alcohol yields

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Aldehyde

Ketone

Acid

Alkene

Aldehydes and ketones are carbonyl compounds. Which of them react both with NaBH₄and with Tollen's reagent

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Both aldehydes and ketones

Aldehydes only

Ketones only

Neither aldehydes nor ketones

The solubility product of AgCl is 2.0 x 10^-10mol²dm^-6The maximum concentration of Ag⁺ions in the solution is

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2.0 x 10^-10mol dm^-3

1.41 x 10^-5mol dm^-3

1.0 x 10^-10mol dm^-3

4.0 x 10^-20mol dm^-3

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