Question # 1

Peptide bond is a key feature in

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Polysaccharide

Proteins

Nucleotide

Vitamins

The basic difference between synthetic and natural fertilizer is in their

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Rae material

Crop application

Usage

Shapes

Steps in SN , reactions are:

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One

Two

Three

Four

On heating glycerol with conc. Sulphuric acid a compound with unpleasant odour is obtained. The compound is

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Methyl alcohol

Formic acid

Prop-2-enal

Glycerol sulphate

Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due

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Combining with oxygen to form carbon dioxide

Destruction of hemoglobin

Preventing reaction between oxygen and hemoglobin

Forming stable compound with hemoglobin

The apex angle of the folded filter paper is slightly greater is termed as:

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60 degree

30 degree

45 degree

90 degree

N₂ + O₂ ⇌2NO

The unit of K_c for tis reaction will be:

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No unit

mol^-2 dm^-3

mol^-1 dm^-3

mol^-2 dm⁺³

The decrease in radius in large for:

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Monovalent ions.

Trivalent ions.

Divalent ions.

Atoms.

The monomeric units of starch is/are

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Glucose

Fructose

Glucose and fructose

Mannose

Tetrabromoethane on treatment with alcoholic zinc gives

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Ethylbromide

Ethane

Ethene

Ethyne

Reductive ozonolysis of benzene produces

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Acetone

Maleic anhydride

Phthalic acid

Glyoxal

The phenomenon of isotropy was first discovered by

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Soddy

Rutherford

Bohr

Dalton

The correct set of quantum numbers (n,l and m) respectively of the unpaired electron of chlorine atom is

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2,1,0

2,1,1

3,1,1

3,2,1

The oxidation number of Ni in [Ni(CO)₄] is

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+1

0

+4

-4

SN₂reactions can be best carried out with:

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Prl. alkyl halide

Sec. Alkyl halide

Ter. Alkyl halide

All of three

The reaction rate is expressed in the units of

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Mol dm^-3S^-

Mol dm^-3

Mol dm^-3N^-

dm^-3S^-

Butanenitrile is formed by reaction of KCN with

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Propyl alcohol

Butyl chloride

Butyl alcohol

Propyl Chloride

Reaction of acids with alcohols is also known as

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Esterification

Saponification

Alkalization

None

Benzophenone can be converted into benzene using

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Fused alkali

Anhydrous AlCl₃

Sodium amalgam in water

Acidfied dichromate

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Hear of reaction

Heat of formation

Heat of neutralization

Heat of combustion

Which compound on reaction with hydrogen cyanide produces a compound with a chiral centre

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Ch₃CHO

CH₃CH₂COCH₂CH₃

CH₃CO₂CH₃

HCHO

A gas bulb is filled with NO₂gas and immersed in an ice bath at 0°C which becomes colourless after sometimes. This colourless gas will be

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NO₂

N₂O

N₂O₄

N₂O₅

DDT is

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Biodegradable pollutant

Nondegradable pollutant

Not a pollutant

An antibiotic

If we remove one hydrogen atom from an alkane we obtain a group called

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Acetyle group

Formyle group

Alkyle group

Ketyle group

Which of the following brings about the conversion of starch into maltose

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Maltase

Zymase

Diatase

Invertase

A molecular ion is formed by

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Passing a high energy electron beam through gaseous molecule

Dissolving a salt i dilute acid

Passing electric current through molten salt

Passing electricity through aqueous solutions

In preparation medhod of carboxylic acids from alkyl halides always carboxylic acid formed which have carbon atoms:

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One less than in R----X

One more than in R---X

Equal to R---X

Double to R----X

Which one of the following is a buffer

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HCI + NaCI solution

CH₃COOH + CH₃COONH₄solution

H₂SO₄+ CaSO₄solution

CH₃COOH + CH₃COONa

Which woody raw material is used of the manufacture of paper pulp

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Cotton

Bagasse

Poplar

Rice straw

1.12 dm³of N₂gas at S.T.P. has mass of N₂gas

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2.8 g

2.4 g

1.4 g

14 g

Keeping in view the size of atoms, which order is the correct one

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Mg > Sr

Ba > Mg

Lu > Ce

Cl > l

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