Question # 1

Two or more similar monomers combine to form:

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Homopolymer

Copolymer

Ter polymer

Thermoplastic polymer

One of the following is not a biopolymer. Point out that one

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Lipid

Starch

Diamond

Protein

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

At constant temperature, volume of given mass of gas in inversely proportional to pressure on it. This statement is according to:

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Hook's law

Graham's law

Bolye's law

Charle's law

Nylon, 6,6 is a condensation polymer of

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adipic acid and glycol

phthalic acid and glycol

adipic acid and hexaethylene diamine

phthalic acid and hexaethylene diamine

Bonding in MgO is an example of

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lonic bond

Polar bond

Covalent bond

Coordination covalent bond

An acid that exists as a cyclic dimer in benzene and shows a molar mass of 120g/mol is

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СН3СOOH

HCOOH

CI2CHCOOH

Сl3CCOOH

The development of industries was a direct result of which major factor

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population

living standards

depletion of resources

all of these

In Purification of potable water the coagulant used is

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nickel sulpahte

copper sulpahte

barium sulphate

alum

The transition temperature of KNO3, is

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13.2°C

95.5°C

128°C

32.02°C

Vegetable oil are

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unsaturated fatty acids

glycerides of unsaturated fatty acids

glycerides of saturated fatty acids

essential oil obtained from plants

The reaction is galvanic cell is

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Spontaneous

Non-spontaneous

Acid-base

None of these

According to modern theory of chemical bonding atoms form bonds as it leads to a:

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Increase in energy.

No energy change.

Decrease in energy.

First decrease then increase in energy.

Formic acid is given names from Latin word a "formic" which means:

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Red out

Vinegar

butter

Milk

Statement enthalpy of combustion of H₂is -285.8 KJ mole^-1then which is the standard enthalpy of formation of water

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+285.8 KH mole^-1

-285.5 KJ mole^-1

Zero

-218 KJ mole^-1

The rate of reaction determined at a given time is called

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Average rate

Instantaneous rate

Specific rate

Overall rate

Group VI-B of transition elements contains:

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Zn, Cd, Hg

Fe ,Ru ,Os

Cr, Mo ,W

Mn, Te, Re

For a chemical reaction to take place the particles must have sufficient energy for the effective collisions, the energy is called

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Average energy

Activation energy

Potential energy

Collision energy

The branch of chemistry which deals with the study of compounds containing carbon as an essential elements is called

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Physical

Inorganic

Nuclear

Organic

Extent to H₂ + L₂à2Hl can be increased by :

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Increasing temperature.

Increasing product.

Increasing pressure.

Adding a catalyst.

If the standard electrode potential of CU²⁺/Cu electrode is 0.34 V, what is the electrode potential of 0.01 M concentration of Cu²⁺? (T=298)

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0.399 V

0.281 V

0.222 V

0.176 V

A food chemist wants to create the odour of pineapples for a product. An ester with this odour has the formula C₃H₇COOC₂H_5.Which pair of reagents would produce this ester

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C₂H₅CI and C₃H₇COOH

C₂H₅OH and C₃H₇CONH₂

C₂H₅OH and C₃H₇COOH

C₃H₇OH and C₂H₅COCI

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