Question # 1

Carbon monoxide is harmful to human beings as it

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Is carcinogenic

Is antagonistic to CO₂

Has higher affinity for hemoglobin as compared to oxygen

Is destructive to O₃

The group linkage present in fats is

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Peptide linkage

Ester linkage

Glycosidic linkage

None of these

In the atmosphere, CO₂is about

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0.01%

0.03%

0.05%

0.09%

Spraying of DDT produces pollution of

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Air

Air and water

Air and soil

Air, water and soil

Which of the following is not fatty acid?

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Propanoic acid

Acetic acid

Phthalic acid

Butanoic acid

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First order

Pseudo first order

Second order

Zero order

Pick up the correct statement

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CO which is major pollutant resulting from the combustion of fuels in automobile plays a major role in photochemical smog

Classical smog has an oxidizing character while the phtochemical smog is reducing in character

Photochemical smog occurs in day time whereas the classical smog occurs in early morning hours

During formation of smog the level of ozone in the atmosphere goes down

Monosaccharides belong to the group

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Lipids

Fats

Proteins

Carbohydrates

White phosphorus is

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A mono atomic gas

P₄, a tetrahedral solid

P₈, a crown

A linear diatomic molecule

While balancing an equation by ion electron method, the number of oxygen atoms are balanced by

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OH^-

H₂O

O₂

H⁺

In Millikan method for determination of charge on electron the air in the chamber is ionized by

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Protons

Electric field

X-rays

a - particles

Which compound was recognized the parent member of aromatic compounds

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Aniline

Phenol

Benzene

Toluene

Which of the following charge

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Li

Be

H

He

Organic compounds generally react at ______ rates

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Slow

Fast

Moderate

None of them

The orbitals having n + l = 5 are

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2p, 3d,3s

3p, 3d, 5s

3s, 4p, 4d

5s, 4p, 3d

Which property is not present in lipids?

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Liquid

Solid or semi solid

Soluble in water

Form emultion

An azeotropic mixture showing it's positive deviation from Raoult's law, the volume of the mixture is :

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Slightly more than the total volume of the components.

Slightly less than the total volume of the components.

Equal to the total volume of the components.

None of these.

Which is not carboxylic acid with pungent smell?

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Formic acid

Acetic acid

Ethanoic acid

Butyric acid

Which of the following half molar solutions will have lowest freezing point

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Solution of non-volatile, none electrolyte

Solution of non volatile, weak electrolyte

Solution of non volatile strong electrolyte

Solution of volatile, non electrolyte

All are ortho & Para directing except

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X

OH

NR₃

NH₂

3.01 x 10²²Ag⁺ions is present in

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85 grams AgNO₃

0.85 g AgNO₃

8.5 g AgNO₃

18.5 g AgNO₃

Same amount of electric current is passed through solutions of AgNO₃and HCl. If 1.08 g of silver is obtained in the first case, the amount of hydrogen liberated as S.T.P in the second case is

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112 cm³

22400 cm³

224 cm³

1.008 g

Ethyl bromide on treatment with alcoholic KOH gives

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Ethylene

Ethanol

Acetic Acid

Ethane

Which is the used as test for the presence of alkenes

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Reaction of cold dilute alkaline KMnO₄

Combustion

Polymerization

Catalytic hydrogenation

For a given process, the heat change at constant pressure (p) and constant volume (v) are related to each other as

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Identification of a substance, determination of its structure an quantitative analysis of its composition are the aspects covered by:

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Modern analytical physics.

Mechanical chemistry.

Biochemistry.

Modern analytical chemistry.

In which of the following reactions is the inorganic reagent acting as a nucleophile

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The energy of the system and surrounding is conserved. This is a statement of

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Law of mass action

Law of definite proportion

Law of conservation of energy

Second law of thermodynamics

One calorie is equal to

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5.184 J

3.184 J

4.184 J

7.184 J

The radius of second Bohr's orbit is

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0.053 nm

0.053/4 nm

0.053 x 4 nm

0.053 x 20 nm

Oxidation number of oxygen in OF₂is

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+1

-1

+2

-2

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