Question # 1

Carboxylic acid having two carboxyl group are:

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Mono-carboxylic acid

Di-carboxylic acid

Tri-carboxylic acid

Tetra carboxylic acid

According to the general gas equation, density of an ideal gas depends upon

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Pressure

Temperature

Molar mass of the gas

All of the above

Which impurity makes the shape of NaCl crystal needle like

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MgSO4

urea

glucose

MgCO3

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

Third order of protein structure refers to

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Bending of protein chain

Three-dimensional structure of protein

Number and sequence of amino acids

Site of disulphide bonds

During thunderstorms, water dissolves

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Dust particles

HCl

Nitric acid

Clouds

One molecule of gas is approximately Distance______ times its own diameter from its neighbour at room temperature.

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30

3000

3

300

Amino acid which has cyclic structural is

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Proline

Valine

Alanine

Glutamic acid

Amorphous solids:

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have sharp melting point

undergo clean cleavage when cut with knife

have prefect arrangement of atoms

can possesses small regions of orderly arrangement

Why is CO called as pollutant? reason is:

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It combines with oxygen

It inactivates glycoblysis

It combines with hemoglobin

Inactivates nerves

Materials suspended in water or present as colloidal form in raw water are removed by:

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aeration

coagulation

chlorination

treatment

During reaction of O₂and alkenes, a product:

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Glycol

Epxide

Halohydrin

Ethylene glycol

The general formula of saturated alicyclic hydrocarbons is:

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C_nH_n

C_nH_2n

C_nH_2n+2

C_nH_2n-1

Cracking normally gives smaller ______

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Alkanes

Alkenes

Alkynes

Both a and b

Alkanes are gases :

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C₁-C₄

C₅-C₁₀

C₁₁-C₁₅

C₁₀-C₂₀

Alkanes containing carbon C₁₈ownwards are

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Gases

Liquids

Waxy solids

Solids

Which of the following enzymes brings about the hydrolysis of fats?

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Urease

Maltase

Zymase

Lypase

Alkanes normally have ______ hybridization

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Sp

Sp²

Sp³

d sp³

Molecular orbital picture of N₂indicates

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One unpaired electron

Two unpaired electron

No unpaired electron

None of these

The best electrode used in salt bridge is KCl. Which other electrolyte an also be used for the purpose :

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NaCl

NH₄NO₃

KNO₃

NaNO₃

Those compound which have any atom other than C as member of rings are called as

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Monocyclic

Hetrocyclic

Aliphatic

Both a and b

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

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