Question # 1

By using graphite electrode the electrolysis of aqueous solution of NaCI produces at anode

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H₂gas

Cl₂gas

NaOH

No metal

Hemoglobin contains nearly:

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10,000 atoms

100 atoms

1000 atoms

1 atom

C₂H₅CHO and (CH₃)₂CO can be distunguished by testing with

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Phenyl hydrazine

Hydroxylamine

Fehling solution

Sodium bisulphate

Red P can be obtained form white P by

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Heating it with a catalyst in an inert atmosphere

Distilling it in an inert atmosphere

Dissolving it in CS₂and crysllizing

Melting it ad pouring the liquid into water

Which is not the affect of polluted air on environment

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Acid rain

Smog

Ozone

Global warming

Electrochemistry is concerned with the conversion of electrical energy into chemical energy in :

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Galvanic cell

Electrolytic cell

Voltaic cell

Both (a) and (c)

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-76 KJ

-57 KJ

-171 KJ

-114 KJ

Tetraethyle lead causes disease:

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Typhoid

Respiratory

Stomach

Muscular

Hydrocarbons contain :

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Carbon only carbon

Hydrogen only

Carbon & hydrogen

Carbon , hydrogen & halogen

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[A] = [B]

[A] < [B]

[B] = [C]

[A] > [B]

The rate of reaction between two specific time intervals is called

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Instantaneous rate

Average rate

Specific rate

Ordinary rate

Which compound is more soluble in water?

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C₂H₅OH

C₅H₅OH

CH₃OCH₃

n-Hexanol

Metal tend to lose electrons, becoming:

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Metals

Positively charged

Negatively charged

(a)And (c)

Synthetic polymer prepared from caprolactum is known is

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Nylon 610

Teflon

Terylene

Nylon-6

The isomers due to the unequal distribution of carbon atoms on either side of the functional group belonging to the same homologous series are called

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Functional isomers

Position isomers

Chain isomers

Metamers

Alkyl halides on treatment with Zn and HCI gives

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Alkanes

Alkenes

Alkynes

Alcohols

Which of the following are electropositive in nature

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Alkali metals

Alkaline earth metals

Halogens

Alkali and alkaline earth metals

One of the following bonds is polar but compound is non-polar

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H₂O

NH₃

HCl

CO₂

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

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Fullerences

Freons

Polyhalogens

Ferrocene

Linear shape is associated with set of hybrid orbitals?

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sp

sp2

sp3

dsp2

An organic compound will decolorise dill acidified (aq) KMnO₄on warming, but will not decolorise bromine water. What is the compound

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KMnO₄

Ethanol

Ethane

CH₃CH₂Cl

In the atmosphere, O₂is about

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10%

15%

21%

25%

Organic acid without a carboxylic acid group is

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Ascorbic acid

Vinegar

Oxalic acid

Picric acid

Propyne on hydrolysis in presence of H₂SO₄and HgSO₄gives

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Acetaldehyde

Acetone

Formaldehyde

None

Platinum is poisoned by

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Arsenic

Silver

Argon

Zinc

Alkenes normally have ______ geometry

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Tetrachedral

Linear

Planer

None

Metallic conduction is due to the

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Movement of electrons

Movement of ions

Both a and b

None of these

The substances which soften the polymer are called

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Stabilizers

Plasticizers

Retarders

Pigments

Hydroxyl amine is a derivative of::

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Alcohol

Aldehyde

Ammonia

Ketone

During electrolysis of KNO₃, H₂is evolved

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Anode

Cathode

Both a and b

None

Among the lanthandes the one obtained by synthetic method is

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Lu

Pm

Pr

Gd

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