Question # 1

The force which hold the atoms together to form a compound is called:

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Dispersion forces

London forces

A chemical bond

Ven der wall's forces

A single chloride free redical can destroy bow many ozene molecules?

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100

100000

10000

10

Per hydro cyclopentanone phenantherene is the basic structural of all the.

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Waxes

vitamins

proteins

steroids

Which is the optimum temperature for the activity of enzyme?

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20 - 35°C

10 -15°C

55 - 70°C

35 - 55°C

Chloroethene, CH₂ = CHC/ is the monomer of PVC.
What are the C-C-C bond angles along the polymeric chain in PVC?

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They are all 109.5°

half are 109.5° and half are 120°

They are all 120°

They are all 180°

Cellulose is the polymer of

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α-D-glucose

β-D-glucose

Fructose

None

Amino acids are building material of:

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lipids

protein

carbohydrates

fats

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

H-bonding is maximum in:

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ethanol

benzene

diethyl ether

water

Factors affecting quality of water:

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D.O

BOD

COD

a,b,c

An excellent source of energy without causing pollution is

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Fossil fuel

Sun

Petroleum

Nuclear reactor

Which one of the following elements is not present in all proteins

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Carbon

Hydrogen

Nitrogen

Sulphur

Alkenes combine readily with electrophillic reagents such as halogens giving

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Haloalkanes

Gem-dihalides

Vicinal dihalides

Vinyl halides

Increasing skin cancer and high mutation rate are due to

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Acid rain

Ozone depletion

CO pollution

CO₂Pollution

Benzene reacts with ozone and gives

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Glycerin

Glyoxal

Maleic anhydride

Benzoic acid

Picric acid is

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2, 4, 6-Trinitrotoluene

2, 4, 6-Tribomoethanol

2, 4,6-Trinitrophenol

Para-Nitrophenol

Isotopes differ in the

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Number of neutrons

Number of protons

Number of electrons

Number of atoms

Domestic waste mostly constitutes

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Non-biodegradable pollution

Biodegradable pollution

Effluents

Air pollution

Energy of electron in first orbit of H atom is

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-45.32 KJ/mole

-82.08 KJ/mole

-52.53 KJ/mole

-1313.31 KJ/mole

The bond order of individual C - C bond is benzene is

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One

Two

Between one and two

One and two alternately

Acetic acid is manufactured by:

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Distillation

Fermentation

Ozonolysis

Esterification

Protein may have

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Primary structure

Secondary structure

Tertiary structure

All of these

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