Question # 1

The curve which is obtain from Boyle's law is called as

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Isochoric

Isotherm

Adiabatic

All of these

A semiconductor of Ge can be made p-type by adding

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Trivalent impurity

Tetravalent

Pentavalent impurity

Divalent impurity

Chlorofluorocarbons and aerosols are inert in sphere:

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troposphere

stratosphere

lithosphere

hydrosphere

Which of the following is derived lipid

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Sterols

Vit D

Terpenes

All

Denaturation of protein means the structure of protein is disrupted indicate which factor does not denature protein

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Oxidizing agent

Heat protein

Keeping pH 7.35

pH changes

Hydrogen bonding is extensively present in proteins which form the spiral. The hydrogen bond being produced is between

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nitrogen and hydrogen atom

oxygen and hydrogen atom

carbon and hydrogen atom

oxygen and carbon atom

The mechanism of polymerization involves free addition Polymerization or condensation polymerization, Choose the correct statement:

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Polyester is an addition polymer

polythene is an addition polymer

polyviny chloride (PVC) is a condensation polymer

Polystyrene

The reduction potentials of non-metals are A =+0.54V, B=+1.08V, C=+1.36V. D= +2.87V Which non -metal can displace all other from aqucous solution of their salts

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A

C

B

D

Ether show the phenomenon of

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Positional isomerism

Functional group isomeris

Meta merism

Cis trans isomerism

The pH range of the acid rain is

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7 - 6.5

6.5 - 6

6 - 5.6

Less than 5

In order to mention boiling point of water at 110∘C the external pressure should be:-

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between 760 torar an 1200 torr

between 200 torr and 760 torr

765 torr

any value of preessure

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Forward reaction is favoured

Backward reaction is favoured

No effect

None of the above

Domestic waste mostly constitutes

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Non-biodegradable pollution

Biodegradable pollution

Effluents

Air pollution

Molarity of pure water is :

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33.3

55.5

44.4

66.6

Protein are classified into

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Simple protein

Complex protein

Derived proteins

All of these

The pH of 10^-3mole dm^-3of an aqueous solution of H₂SO₄is

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3.0

2.7

2.0

1.5

Hydrocarbans, SO₂, CO, NH₃, nitrogen oxides and compounds of fluorine are called

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Primary pollutant

Secondary pollutant

Tertiary pollutant

None of these

Shape of CIO₃is

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Triangular pyramidal

Tetrahedral

Triangular planar

Triangular bipyramidal

Which of the following is lighter

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Li

k

Na

Ca

The lanthanides contraction is responsible for the fact that

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Zr and Y have about the same radius

Zr and Nb have similar oxidsation state

Zr and Hf have about the same radius

Zr and Zn have the same oxidation satete

Steel may be manufacture by two processes which two are correct

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Open hearth process and besemer process

Open hearth process and Haber process

Bassemer process and Haber process

Contact process and Haber process

The number of amino acids found in proteins that a human body can synthesize is

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20

10

5

14

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