Question # 1

Which set of elements is good loser of electrons

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F2. Cl2, Br2

N, P. As

O. S, Se

Li, Na, K

The polarizabilities of elements mostly increase down the group due to the reason that

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the atomic numbers increase

number of protons increase

number of shells increase along with increase of shielding effect

the behaviour of the elements remain the same

Which of the following protein is used to make buttons

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Gelatin

Callogen

Albumin

Casein

Aldehydes are easily oxidized to corresponding carboxylic acids in the presence of:

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Strong oxidizing agents

Highly strong oxidizing agents

Tollen's reagent

Tollen's reagent and Fehling solution

Which of the following may be called London dispersion forces

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dipole-dipole forces

ion-dipole forces

dipole-induced dipole forces

instantaneous dipole-induced dipole forces

Example of basic essential amino acids

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Arginine

Histidine

Lysine

All of the above

The maximum possible number of hydrogen bonds in which a H₂O molecule can participate is

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1

2

3

4

Which one of the following element is not present in all proteins?

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carbon

hydrogen

nitrogen

sulphur

Acetaldchyde and ketone form addition product with

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Phenyl hydrazine

Hydroxylamine

Hydrazine

hydrogen cyanide

Which of the following statement is correct if the intermolecular forces in liquids A,B and C are in the order A < B < C?

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B evaporates more readily than A

B evaporates less readily than C

A and B evaporates at the same rate

A evaporates more readily than C

Albumins and globulins are defined as

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Derived protein

Conjugated protein

Fibrous protein

Globular protein

Phenols are derivative of:

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Alkanes

Alkenes

Alkynes

Benzene

Sulphur dioxide affects

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Cell wall

Plasmodesmata

All membrane systems

Nucleus

For the carbylamine reaction we need hot alc.KOH and

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Any amin and chloroform

Chloroform and Ag powder

A primary amine and chloroform

A mono alkyl amine and trichlorom-ethane

Peat before conversion to bituminous coal is converted to

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Lignite

Anthracite

Asphalt

None

For which of the following sets of quantum numbers and electron will have the highest energy?

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3,2,1,1/2

4,2,-1,1/2

4,1,0,-1/2

5,0,0,1/2

The homologous series of aldehydes and ketones have general formula:

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C_nH_2nO

C_nH_nO

C_nH_2n-1O

C_nH_nO_n

Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water

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Low value

Higher value

Both values

None of these

Cotton is ______% cellulose

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90

100

99

30

The filtration process is used to to separate solid from :

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Liquid.

Gas.

Solid.

All of above.

If two lone pairs are present then bond angle of tetrahedral compound reduces to ______ degrees

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109.5°

107.5°

104.5°

None

Air pollution is not caused by

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Pollen grains

Hydroelectric power

Industries

Automobiles

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