Question # 1

The word polymer is derived from words poly mean many and mer means unit.

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Latin

Greek

English

French

During the electrolysis of Fused NaCI, the products are

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Na and H2

Na and Cl2

Na and O2

H2 and Cl2

Liquids have definite volume due to

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Negligible spaces

Intermolecular force

Motion

Both a and b

Carboxylic acid having three carboxyl groups are:

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Mono carboxylic acid

Di-carboxylic acid

Tri-carboxylic acid

Tetra carboxylic acid

The fibre which is obtained from naturally occurring proteins is called

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Saran

Azlon

Rayon

Nylon

A double bond consists of:

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Two sigma bonds

One sigma and one pi bonds

One sigma and two pi bonds

Two pi bonds

Sodium chloride imparts a yellow colour to the Bunsen flame. This can be interpreted due to the

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low ionization energy of sodium

sublimation of metallic sodium to give yellow vapour

emission of excess energy absorbed as a radiation in the visible region as a radiation in the visible region

photosenitivity

The molar boiling point constant is the ration of elevation in boiling point to :

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Molarity

Mole fraction of solvent

Mole fraction of solute.

A single chlorine free radical can destroy how many ozone molecules

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100

100000

10000

10

The elements with atomic numbers 9, 17, 35, 53, 85 an all

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Noble gases

Halogens

Heavy metals

Light metals

Among the alkaline earth metals the element forming predominantly covalent compounds is

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Be

Mg

Sr

calcium

Saponification of ethyl benzoate with caustic soda

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Benzyl alcohol,ethanoic acid

Sodium benzoate, ethanol

Benzoic acid, sodium ethoxide

Phenol, ethanoic acid

In a hydrogen-oxygen fuel cell, combustion of hydrogen occurs to

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Generate heat

Remove adsorbed oxygen from electrode surfaces

Produce High purity water

Create potential difference between two electrodes

What will react differently with the two isomeric pentols, (CH₃)₃CCH₂OH and (CH₃)₂CH CH₂CH₂OH

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Acidified (aq) KMnO₄

Concentrated H₂SO₄

PCl

Sodium

Acetamide and NaOBr/OH^-produce

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Ethanamine

Methanamide

CH₃CN

NH₃

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