Question # 1

Acidification of soil can leach metal:

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Al

Hg

Pb

Ca

Surfactants are organic compounds used in detergents which reduce the:

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viscosity of water

surface tension of water

boiling points of water

surface ability of water

Which pair gives same dehydrohalogenation product

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I-Chlorobutane, 2-Chlorobutane

I-Chloropropane, 2-Chloropropane

I-Bromopentane. 3-Bromopentane

iso-butvl chloride. 2°- butyl chloride

The kinetic theory of gases predicts that total kinetic energy of a gaseous assembly depends on

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Pressure of the gas

Temperature of the gas

Volume of the gas

Pressure,temperature,and volume of the gas.

Amino acids ionize in water to form

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Zwitterion

Internal saH

Dipolar ion

All of these

Cotton is __________ % cellulose

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90

100

99

30

Alpha helix and beta pleated sheath are secondary structures of protein which are maintained by

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dipole forces

non-polar interactions

ionic bonds

Hydrogen bonds

Which of these polymer is synthetic polymer

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Animal fat

Starch

Cellulose

Polyester

Which one of the following is not air pollutant gas

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CO

CO₂

NO

SO₂

Which is the least reactive of all the alkali metals

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Li

Na

K

Cs

Addition of washing soda removes

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Softness of water

Temporary hardness of water

Permanent hardness of water

Hydrogen from water

Which of the following nitrogen fertilizer contains more nitrogen

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NaNO₃

KNO₃

NH₄NO₃

Urea

K_avalue of HF acid is 6.7 x 10^-15the acid is a

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Weak acid

Moderately strong acid

Strong acid

Very weak acid

Wacker method involves the conversion of alkene using PdCl₂into corresponding

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Alcohol

Ketone

Aldehyde

Ether

Outer shells of two elements X and Y have two and six electrons respectively. If they combine, the expected formula of compound will be

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XY

X₂Y

X₂Y₃

XY₂

X-ray work has shown that the diameters of atom are of the order of

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8 x 10^-10m

2 x 10^-10m

8 x 10^-8m

2 x 10^-8m

Which of the following is a tetrabasic acid?

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ORthophosphoric acid

Hyposphosphorus acid

Metaphosphoric

Pyrophosphoric acid

A suitable solvent should dissolve maximum amount of solute at its boiling point and minimum amount at :

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Freezing point.

Room temperature.

Boiling point.

Sea level temperature.

Marble is chemically

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CaCl₂

CaCO₃

Na₂CO₃

NaHCO₃

Which is not true about acetophenone?

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Reacts to form 2,4-dintrophenyl hydrazine

Reacts with Tollen's reagent to form silver mirror

Reacts with I₂/NaOH to form iodoform

On oxidation with alkaline KMnO₄followed by hydrolysis gives benzoic acid

Acetamides are formed by the reaction of carboxylic acids with

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Acids

Bases

Salts

NH₃

In t-butyl alcohol, the tertiary carbon is bonded to:

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Two hydrogen atom

Three hydrogen atoms

One hydrogen atoms

No hydrogen atoms

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