Question # 1

Half -Life period of a first order reacting is independent of.

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Initial concentration of the compound

Conditions of temperature

Presence of catalyst

All the above

The relationship between K_pand K_cis given by

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A substance which rerareds the rate of a reaction is called

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Inhibitor

Activator

Auto-catalyst

None of these

The pH of human blood is

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7.0

7.4

4.0

6.5

Calcium has isotopes

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7

9

1

6

Ionic compound do nto show the phenomenon of Isomerism because bond are.

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Directional and rigid

Non directional and rigid

Non directional and non rigid

All above

Which statement is incorrect about activated complex

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Short lived

Maximum energy

Unstable combination of atoms

Less energy than Ea

Chromatographic technique is very useful for

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Isolation

Purification

separation

All of them

An atomic orbital has l =1 , m =+1, 0, -1, n = 3 than which one of the following atomic orbital has such values.

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2s

2p

3p

3d

Drying agent used in crystallization is.

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P2O3

Animal charcoal

KMnO4

Water

Which of the hydrogen halides has the highest percentage of ionic character

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HF

HBr

HCI

HI

The molecule of CO2 in dry ice form the.

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Ionic crystals

Covalent crystals

Molecular crystals

Any type of crystals

If absolute temperature of gas is doubled and the pressure is reduced to one half, the volume of the gas will.

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Remain unchanged

Increase four times

Reduce to 1/4

Be doubled

Which statement is incorrect about Dempster's mass spectrometer.

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Solid sample can be used in this mass spectrometer

Ions are detected on the basis of mass to charge ratio

Atoms or molecules are ionized with beam of electron.

This spectrometer work at one atmospheric pressure.

Splitting of spectral lines when atoms are subjected to strong electric field is called.

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Zeeman effect

Stark effect

Photoelectric effect

Compton effect

All radio active disintegration nuclear reaction are of.

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First order

Zero order

2nd order

Third order

Heat of solution of an ionic compound is equal to.

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Hydration energy

Lattice energy

Slum of both 'a' and 'b'

Difference of both a and b

Which of the following solutions has the highest boiling point

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5.85% solution of sodium chloride

18.0% solution of glucose

6.0% solution of urea

All have the same boiling points

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