Question # 1

CFT can very well explain

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Color

Magnetic properties

Spectra of transition metal

All

A red color gas, on condensing ti gives a dark blue liquid.

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NO

N2O

N2O3

N2O4

Which of the following elements is most electropositive.

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C

N

O

Be

The law of triads is applicable to

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Lithium, beryllium, boron

Fluorine, chlorine, bromine

Chlorine, bromine, iodine

Sodium, potassium, Rubidium

Stainless steel contains

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Fe+Cr+Ni

Fe+Ni+Cu

Fe + Cr+ Cu

Cu + C + Ni

Aque regia is made by dissolving a mixture of HNO3 and HCl with ratio.

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1 : 1

1 : 3

1 : 2

1 :10

Variable oxidation states is shown by

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Normal eleemnts

Metallic elements

Non metallic elements

Transition elements

Which one of the following ions is colourless.

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Cu+

Co2+

Ni2+

Fe3+

The correct order of ionization energies of alkali metals is.

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Li > Na > K > Rb

Na > K > Rb > Li

Rb > K > Na > Li

Rb > K > Li > Na

Which of the following method is used for the coventrating of ores.

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Gravity separation

Magnetic concentration

Fourth floatation

Electrostatic concentration

All

The name hydrogen was proposed by.

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Lavoisier

Rutherford

Henry Cavandish

Scheele

Copper is resistant to

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Air

Water

Acid and Alkali

All of the above

Which one of the following sets of elements has the strongest tendency to form negative ions in gaseous state.

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NA, Mg, Al

Ca, V, Cr

N , O, F

Ga, ln, tI

Lewis concept explain the formation of

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Ionic bond

Covalent bond

Co-ordinate bond

Chemical bond

The state of hybridization of Xe in Xe F6 are

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sp2

sp3

sp3 d

dsp3

Has maximum property of catenation.

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C

Si

Sn

Pb

The most electronegative element of the third period is.

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F

P

Br

Cl

Which of the following compound does not following octet rule.

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CS2

PBr3

IBr

Br F3

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 can be purified by sublimation

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F2

Cl2

Be2

I2

Which of the following elements has the highest value of IE.

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Na

K

Mg

Ca

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