Question # 1

C=O and C=C bonds are differentiated by

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Hybridization of C-atom

Bond angles

Ammonical AgNO3

Conc. HNO3

Zn has

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Zero unpaired electrons

Three unpaired electrons

Five unpaired electrons

One paired electrons

Albumins and globulins are defined as

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Derived protein

Conjugated protein

Fibrous protein

Globular protein

The normal amount of overhead ozone is about

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250 Du

300 DU

350 DU

400 DU

Primary, secondary aad tertiary alcohols can be identified and distinguished by

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Lucas test

lodoform test

Baeyer's test

Silver mirror test

Which of the following successive ionization energies belong to a Group ll element?

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320,600,1110,1700,5650,

577,1820,2740,1160,14800,

428,3070,4600,5860,7990

736,1451,7740,10500,13600

A single chlorine free radical can destory how many ozone molecules

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10

100

1000

10000

Value of gas constant R is

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8.314 J K^-1mol^-1

0.082 J K^-1mol^-1

273.15 J K^-1mol^-1

101325 J K^-1mol^-1

The largest number of molecules are present in

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3.6 g of H2O

4.6 g of C2H5OH

2.8 g of CO

5.4 g of N2O5

An example of bydrolase is

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Amylase

Lipase

Fumarase

A,C

The number of atoms in 0.004 g of magnesium is close to

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24

2 x 10²⁰

10²⁰

6.02 x 10²³

What is the total number of different chloroethanes, formula C₂H_6-nCl_n, where n can be any integer from 1 to 4

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4

6

7

8

If 5.85 of NaCI are dissolved in 90g of water the mole fraction of NaCI is

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0.1

0.01

0.2

0.0196

The protein which only yield amino acids and their derivatives

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Simple proteins

Complex proteins

Derived protein

All of these

Hydrocarbons are organic compounds which contain elements such as

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Hydrogen

Carbon

Hydrogen and carbon

Halogens

Which of the following discoveries resulted in a version of the Mendeleefs

periodic law

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The nucleus of atom by Rutherford

The elements polonium and radium by the Curies

Atomic numbers by Moseley

x-rays by Roentgen

Burning of fossil fuels is the main source of pollution

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Nitrogen oxide

Nitric oxide

Nitrous oxide

Sulphur dioxide

50 cm³of 0.05 molar nrea (N₂H₄CO) solution has % W/N concentration

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6%

3%

0.3 %

0.6 %

Industrial alcohol may be denaturated by the addition of

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Methyl alcohol

Acetone

Pyridine

Any of the above reagent

Benzene is stable to:

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Oxidation

Nitration

KMnO₄

SULPHONATION

The substance upon which an enzyme acts is known as its

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Domain

Field

Substrate

Reactant

A polymer may be

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Linear

Branched

Cross linked

All of these

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