Question # 1

When FeSO4 is added in the sodium extract the compound formed is.

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Only Na4[Fe (CN)6]

Only Fe (OH)2

Only Na2So4

Mixture of all these

The correct order of reactivity among I , Ii, and III IS.

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i > ii >iii

i > iii > ii

II > III > I

III > II > I

Which of the following acid radical gives chromyl chorate test.

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F-

I-

Cl-

Br-

Various compound corresponding to molecular formula C1H10 are.

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Functional isomers

Position isomers

Chain isomers

None of the abvoe

The major role of Flurospar which is added in small quantities in the electrolytic reduction alumina dissolved in fused cryolite is.

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As a catalyst

To make the fused mixture very conducting

To lower the temperature of the melt

To decreases the rate of oxidation of carbon at the anode

The equilibrium constant value for a chemical reaction is 5 x 10²⁰which of the following statement is true with respect to this value.

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Reaction will be reversible

Reaction will proceed in backward direction

Reaction is at equilibrium

Reaction will proceed in the forward direction

Bromine is soluble in

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Alcohol

Water

Chloroform

All above

Non localised bonds are referred as

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Metallic bond

Long range bonds

Ionic bond

Covalent bonds

Which of the following parameter is not involved in calculations based on Born Haber Cycle.

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Ionization enthalpy

Electron gain enthalpy

Electronegativity

Bond dissociation energy

Which of the following statements is not correct with the concept of Bronsted concept of acids and bases.

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An acid can donate a proton

A base can accept a proton

This concept has many bases that have OH- ions

This concept is more general

Types of carides

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Ionic carides

Covalent carbides

Interstitial carbides

All above

The vapour pressure of a liquid

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Always increase's with temperature

Always decreases with temperature

Is independent of temperature

Increase up to the boiling point

Among sodium phosphate, sodium sulphate and sodium chloride the solubility in water increases as.

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Chloride > Phosphate > Sulphate

Sulphate > Pohosphate> Chloride

Chloride > Sulphate > Phosphate

Phosphate > Chloride > Sulphate

Which of the following statements is not related with flame photometric analysis.

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Vaporization of the solvent leaving back the residue

Conversion of solid slat to the gaseous state

Dissociation of gaseous molecules into free atoms

Measurement of the intensity of absorbed tradition

The number 8.47 is rounded to

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8.5

8.4

8.7

8.6

What is the ratio of the maximum load in a tension test to the original cross sectional area of the test bar.

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Tensile strength

Yield strength

Shear strength

Torsion

Any substance which has solidified from the liquid state with crystallization is known as

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Steel

Fibre

Glass

Asbestos

The temperature of which the compound melts into a liquid to the same composition as the solid is called the

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Congruent melting point

Incongruent melting point

Peritectic temperatures

Metastable point

The dye obtained from madder root

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Indogotin

Indanthrene

Alizarin

Acriflavin

The electrical resistance of stainless steels can be as much as______ time that of carbon steel.

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5

6

10-

15

Consider the coordination compound K2[Cu(CN)4] A coordinate covalent bond exists between

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K+ and CN-

Cu2+ and CN-

K_ and [Cu(CN)4]2+

C and N in Cn

During reaction of copper with aqueous solution of silver nitrate

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Silver atoms are reduced

Cu2+ ions are reduced

Silver ions are reduced

No³ ions are reduced

In terms of number of phases (p) components (C) and degree of freedom (F) the phase rule is expressed as.

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P + C = F + 2

F = P+ C - 2

P + F= C + 2

P - F = C = 2

In an adiabatic system, if work in done, the temperature must.

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Increase

Decrease

Remain the same

Increase than decrease

Which element out of the following can exhibit a maximum co valency of seven.

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Chlorine

Fluorine

Sulphur

Both Cl and F

Ammonia is utilized for

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Manufacture of urea

Oxidation to nitric acid

Manufacture of ammonium sulphate

All above

NH4OH in the presence of H2S is used as a group reagent for which of the following group.

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Group I

Group II

Group III

Group IV

The by -product of the process of saponification is.

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Methanol

Glycol

Glycerol

Absolute alcohol

Which of the following adsorption indicator is used for any of the halides at pH.

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Fluorescein

Eosin

Thorin

Rhodamine 6 G

Which of the following is a natural polymer

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Nylon

Leucite

Cellulose

Polystyrene

In diborane (B2H6)

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The structure is similar to that of C2H6

All the atoms are in one plane

The born atoms are linked through hydrogen bridges

There is a direct boron boron bond

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