Question # 1

If the reaction "P+Q→R+S' is deseribed as being of zero order with respect to P, it means that

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P is catalyst in this reaction

P molecules do not possess sufficient energy to react

The concentration of P does not change during the reaction

The rate of reaction is independent of the concentration of P

d-d transition cannot be shows by

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Cu+1

Sc+3

Zn+2

All

Which of these polymers is a synthetic polymer?

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starch

animal fat

polyester in an addition polymer

cellulose

The volume of 2.8 g of carbon monoxide at 27°C and 0.821 atm pressure is (R = 0.0821 lit.atm.Mol^-1 K^-1)

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30 L

3 L

0.3 L

1.5 L

Macromolecular hypothesis acceptance due to efforts of standinger came about in:

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1910

1920

1930

1940

Which of the following are characteristics of oxidizing smog?

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It is yellow brownish grey haze

It has unpleasant odour

Its main reactant are nitric oxide & unburnt hydrocarbon

All of the above

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

Commonly used coagulants are ions of:

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Ferrous

Al

Cr

Ferric

Which woody raw material is used for the manufacture of paper pulp?

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cotton

bagasse

poplar

rice staw

The carbon atom of an alkyl group attached with halogen atom is called

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Electrophile

Free redical

Nucleophile

Nucleophilic centre

Buffer action can be explained by except

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Common ion effect

Le-Chatelier's principle

Law of mass action

Solubility product

Amino acids contain functional groups in it:

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--CO--

--OH

---NH₂

All of these

In the electrolysis of fused bauxite (Al₂O₃2H₂O) with fused Cryolite (Na₃AlF₆) using carbon rods as anode. The product obtained at cathode is

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Na metal

F₂gas

Al metal

O₂gas

Enzymes are catalysts which contain other than carbon and hydrogen one other element

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Oxygen

Sulphur

Phosphorus

Iodine

The entropy of the universe

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Constant

Is equal to zero

Decreasing

Increasing

The size of electronic shell is described by

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Azimuthal Q. no

Magnetic Q.No

Spin Q. No

Principle Q. No

Which is not a colligative property?

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Osmotic pressure

Lowering of vapour pressure

Depression of freezing point

Elevation of boiling point

Oxidation of 2-propanol gives

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Propanone

Butanone

Pentanone

None of these

Formaline Contains ______% alcohol

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80

37

8

52

96500 C of electricity liberates from CuSO₄solution

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63.5 g of Cu

31.75 g of Cu

96500 g of Cu

100 g of Cu

Which of the following yield both hydrogen and chlorine on electrolysis:

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Electrolysis of acidified water.

Electrolysis of molten NaCl

Electrolysis of aqueous NaCl

Electrolysis of saline water

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Q and R Q and R

R only Q and R

Q and R R only

Q only R only

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