Question # 1

The function of boiling the sodium extract with conc. HNO3 before testing the halogens is

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To make solution clear

To make the solution acidic

To bring common ion effect

To destroy CN- and S2- ion

An element with atomic number 20 is placed in which period of the periodic table.

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1

2

3

4

For the respiration of sea divers mixture is used.

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He & O2

Ar & O2

Ne & O2

Kr & O2

PCl5 is an example of hybridization

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d sp³

d2 sp2

sp2

sp3

In which polymerization branching of chain cannot be possible.

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Free radical

Cationic

Anionic

Anionic and Zieglar Natta

Which of the following extract is used for wet tests of acid radicals.

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Calcium carbonate extract

Sodium iodide extract

Sodium carbonate extract

Ammonium carbonate extract

Vitamin D1 is chemically known as

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Ergocalciferol

Tocopherol

Aserphthol

Phylloquinone

Arrhenius concept explained

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Constant heat of neutralization

Quantitative determination of acid base strength

Catalytic property of acid

All above

Which of the following configuration of an ionic species represents psedue noble gas configuration.

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ns2

ns2 np6

ns2 np6 nd 10

ns2 np3

In the electronic structure of acetic acid,the total number of shared and unshaped pair of electrons are respectively.

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16 ,8

8 ,4

12 ,8

8 ,12

For one mole a gas, the total kinetic energy is equal to.

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2/3 Rt

3/2 RT

2/3 kT

3/2 kT

Which of the following substance is generally not considered an air polutant.

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CO

CO2

SO2

NO2

What refers to the tin mill steel, without a coating.

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White plate

Black plate

Tin steel free

Dichromate tin

Which of the following relation corresponds to Faraday law of electrolysis.

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m = ZI t

E = mc²

E = ho

None of the above

The capacity of normal human eye to see the smallest object is _______ micro meter

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10000

1000

100

10

The rusting of iron is catalyzed by which of the following.

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Fe

H+

O2

Zn

Among the solvents given below, with dielectric constant (E) given in parentheses which has highest solubility of KCI?

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Benzene (E=O)

Carbon disulphide (E = O)

Methanol (E =32)

Acetone (E = 2)

Used in TV sets and sound movies to give ready response to electrical potential

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He

Ne

Ar

Kr

Which of the following system has low as well as upper consolute temperature.

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Nicotine - water

Aniline -water

Triethlylamine -water

Phenol -water

Which of the following substance acts as gaseous pollutant.

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NO

NO2

CO

SO2

All above

Which of the following health effect is caused by lead.

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Cancer

Neurotoxin

Hypertension

Kidney damage

With which one of the following configurations, the lowest value of first IE is associated.

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Is2, 2s2, 2p6, 3s1

1s2, 2s2, 2p5

1s2, 2s2, 2p6

1s2, 2s2, 2p6, 3s2, 3p2

The electrode Pt/Fe2+ (C1) Fe 3+ (C2) belong to the type.

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Gas electrodes

Inert metal electrodes

Magam electrodes

Metal metal insoluble salt electrode

______ is used for Annealing

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Klin

Batch

Converter

Oven

Hydrocarbon X (C6H12) on oxidation with hot alkaline (KMnO4) gives a mixture of prop ionic acid and dimethyl ketone. The structure of compound X is

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CH3CH = CHCH2CH2CH3

(CH3)2 C = CH CH2 CH3

CH3CH2CH = CHCH2CH3

(CH3)2 C = C (CH3)2

Which of the following give higher fibre strength.

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Eucalyptus

Pine

Bagnasse

Sugar cane

The particle motion in solids is

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Only vibratory

Only translator

Vibratory and rotatory

Only translatory

Who prepared and explained nano tubes for the first time.

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Sumio Tijima

Richard Smaley

Erick Drexler

Richard Feynamann

The phase rule was deduced by

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Gibbs

Thomson

Troution

Henry

The soap and detergent are source of organic pollutants like.

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Glycerol

Polyphosphates

Sulphonated hydrocarbons

All of these

Which of the following acid radical give organic layer test.

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Cl-

CO3

I

S^2-

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