Question # 1

Sea gets polluted bu accidental oil spills and

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Atmospheric pressure

Nitrogen gas

Cargo oil tankers

Aero plane

Potassium fertilizers are especially useful for:

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Tobacco

Potato

Coffee

All of these

Instantaneous dipole-induced dipole forces are also known as:

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dipole-dipole interactions

hydrogen bonds

covlent bonds

Van der Waals forces

lonic solids are characterized by which one of the following properties

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moderately low pressure

high vapour pressure

good conductivity in solid state

solubility in polar solvents

The standard reduction potential of Zinc is

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0.76V

0.34

-0.34V

-0.76V

The reaction C2H5CI + aqueous KOH---------C2H5OH+ KCI is

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Electrophilic addition

Nucleophilic addition

Electrophilic substitution

Nucleophilic substitution

A polymeric substance that is formed in the liquid state and then hardened to a rigid solid is called:

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fiber

plastic

varnish

polyamide resin

Oxides of sulphur react in atmosphere by various reactions to form:

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sulphates

sulphites

sulphides

sulphate aerosols

Starch is a polymer of

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Sucrose

Fructose

α-D-Glucose

Lactose

Which of the following is not macromolecule?

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Proteins

Carbohydrates

Acrylonitirle

Lipids

Nylon 6, 6 is a condensation polymer of

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Phthalic acid and hexa ethylene diamine

Adipic acid and hexaethylene diamine

Phthalic acid and glycerol

Adipic acid and glycerol

Write the name of following compound

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5 - methyle - 2- hexene

2 - methyle hexene

4 - ethyle - 2 - methyle hexene

3 - ethyle - 3 - methyl hexene

Which class of compound is more reactive

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Alkane

Alkene

Alkyne

None

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Measuring pH

Measuring density

Titration against standard NaOH

Titration against standard KMnO₄solution

Which of the following fibres are made of polyamides?

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Dacron

Orlon

Nylon

Rayon

Which property is not present in lipids?

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Liquid

Solid or semi solid

Soluble in water

Form emulsion

The oxide of beryllium is

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Acidic

Amphoteric

Superoxide

Basic

17.1 grams sucrose (C₁₂H₂₂O₁₁) dissolved in 250 cm³of solution. This has molarity

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0.1 M

0.2 M

0.01 M

0.02 M

An electrochemical cell is based upon

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Acid-base reaction

Redox reaction

Nuclear reaction

None of the above

Which element has highest oxidation potential

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Li

Be

Ba

Ra

The bond order for He₂molecule is

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zero

1/2

1

2

Which one of the following has been hydroxyl and carboxylic acid groups

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Phenols

Picric acid

Phthalic acid

Salicylic acid

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