Question # 1

Arrhenius concept explained

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Constant heat of neutralization

Quantitative determination of acid base strength

Catalytic property of acid

All above

Xenan hexaflouride at 47.7 ^oC is

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Colorless solid

yellow solid

Yellow liquid

Colorless liquid

Which of the following reacts with excess oxygen to form a normal oxide.

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Li

Na

K

Rb

The oxidation state of Pt in Xe+ [Pt F6] is

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+4

+5

+6

None of these

The pH of the tears is

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7.0

7.4

7.8

8.2

Which of the following is a pseudohalide.

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I3-

IF7

CN-

ICI

The Lewis formula of SOCl2, the total number of bond pairs and lone pairs of electron around sulphur are.

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2 ,1

2,2

3,1

3,0

Which of the following is an alloy of copper

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Brass

Bronze

Monel metal

All

According to CFT the metal ligand bond is considered to be ionic to presentage.

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100%

90%

50%

70%

In the formation of H2O molecule, the oxygen atom makes use of.

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2p orbitals

sp hybrid orbitals

Sp2 hybrid orbitals

Sp3 hybrid orbitals

Which one of the following has the biggest electron affinity.

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F2

Cl2

Br2

I2

The most electronegative and the most electromotive elements of the first period is

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H and He

Na and Cl

Li and F

H and He

Ionic bond are also forces called as.

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Polar bond

Electrovalent bond

None polar bond

Both A and B

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

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Mg

Na

Ca

Sr

The value of Kw increase with temperature because the ionization of water.

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Positive

Negative

Endothermic

Exothermic

A molecule the cannot be susperimposed on its mirror image is said to exhibit which of the following.

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Geometrical isomerism

Optical isomerism

Linkage isomerism

Reactive isomerism

In average composition of a good sample of cement the percentage of silica is.

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18.5%

20.5%

22.5%

24.5%

The electron gain enthalpy of chlorine is -349 Kj mol-1 ionization energy of Cl would be.

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-349 kJ mol -1

349 kJ mol-1

-698 kJ mol-1

698 kJ mol-1

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

Helium is used for

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The preservation of food

Filling electrical transformer

Pressuring agent in rockets

All of above

Coordination compound show

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Structural isomerism

Stereo isomerism

Both A and B

None of above

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