Question # 1

Is an instate able colourles gas with a sticky sweet odor and is extremely toxic.

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B2 H6

B4 H10

B3 H9

B6 H10

The osmotic pressure of a solution with definite composition.

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Varies directly as the volume and temperature.

Various inversely as the temperature.

Varies inversely as the volume and directly as the temperature.

None of the above

Which of the following is not true of ozone.

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It is a strong electilizing agent

It attacks organic compounds containing carbon carbon double bond

Its molecular is linear and has two different O-O bond lengths

It is more powerful oxidising agent at molecular oxygen

Which of the following compounds is must acdic.

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H2O

H2S

H2Se

H2Te

According to CFT the metal ligand bond is considered to be ionic to presentage.

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100%

90%

50%

70%

Aluminium halides is.

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White crystalline solid

Hygroscopic

Sublimes at 180^oC

All above

Which of the following statements is not true about potash alum.

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Its empirical formula is KAI (SO4)2 12H2O

Its aqueous solution is basic in nature

It is used in dyeing industry

On heating it melts in its water of crystallization

Increasing oxygen contents in oxyacids leads to.

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An increase in thermal stability

An increase in acid strength

A decrease in oxidizing power

All above

LPG is use this

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Vehicles

Aviation Fuel

Home

All above

Water that easily forms a lather of films and frotha when agitated with a soap solution called.

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Hard water

Heavy water

Soft water

Washing water

The process requirieng the absorption of energy of.

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F = F

Cl = Cl

H = H

O = O

_{Which of the following salt is soluble in water.}

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BaCO3

SrCO3

CaCO3

K2CO3

The _________ sphere is enclosed in brackets in formulas for complex species, and it includes the central metal ion plus the coordinated group

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Ligand

Donor

Coordination

Oxiation

Not a Characteristic property of ceramic material

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High temperature stability

High mechanical strength

Low elongation

Low hardness

Which of the following techniques are used for minimizing water pollution.

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Stabilization of ecosystem

Recharge of the waste

Waste treatment

All above

All cycle engines working reversibly between same temperature of source and sink have the same efficiency This is the statement for the.

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Carnot cycle

Carnot theorem

Narnst theorem

Second law of thermodynamics

Which of the following responsible for depletion of ozone layer in upper strata of the atmosphere.

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Polyhalogens

Ferrocene

Freons

Fullerencs

The penultimate shell of carbon contains electrons.

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s2

s2p6

s2p6d10

s2p6d8

Which of the following reagent cannot be used to detect the phenolic group.

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Neutral FeCl3

I2/NaOH

NaOH solution

Br2/H2O

In which property listed below hydrogen does not resemble alkali metals.

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Tendency to form cation

Nature of oxide

Combination with halogens

Reducing character.

Among group IA elements, melting point

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Increases down the group

Decreases down the group

Do not show any regular trend

Remains constant

A correct reaction mechanism for a given reaction usually is.

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The same as the balanced chemical equation

Obvious if its heat of reaction is known

Sometimes difficult to prove

Obvious if the activation energy is known

The group of steel are water hardened tool steels.

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Groups S

Groups W

Groups O

Group F

When two H atoms approach each other then forces operates.

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Attractive forces

Repulaive forces

Attractive and repulsive

None of above

Sulphur can exist in

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One phase

Two phase

Three phase

Four phase

Which type of polymer the Nylon -06 is

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Polyamide

Polyester

Addition

Homopolymer

For a compound to act as a dye it must have

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A suitable colour

Ability to fix to fibre

Both A and B

None of these

Which of the following statements is not correct with respect to applications of H- bonding.

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It explains the usual b.p. and m.p of certain class of compound.

It explains the solubility of certain organic compounds in hydroxylic solvents

It explains the lack of ideal behavior in gases and solutions

It has stonrg influence on the configuration of certain molecules.

The equivalent conductance of a 1 N solution of an electrolyte is nearly

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The same as its specific conductance

10³ times more than its specific conductance

10-3 times its specific conductance

100 times its specific conductance.

The common oxidation state of elements of group V A is.

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-3

+3

+5

Any above

Which of the following steps is not involved in chemical analysis.

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Separation of sample in pure form

Separation of the sample in the mixture form

Preparation of sample for the analyisis

Validity of experimental results

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