Question # 1

One degree on Celsius scale is ______ time greater then Fahrenheit scale

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9/5

5/9

6/5

5/6

Which impurity makes the shape of NaCl crystal needle like

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MgSO4

urea

glucose

MgCO3

Choose the correct equation among the following given by clauslus to understand to behaviour of molecules:

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PV =nRT

C_r.m.s= √3RT/M

d = PM/RT

PV = 1/3mnc^-2

Which order of vapour pressure in the following liquids is correct

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water > ethanol > acetone > ether

ether > acetone > ethanol > water

ether > ethanol > acetone > water

water > ether > acetone > ethanol

Lead pollution is mainly due to

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Metallic pollution

Space pollution

Acid rain

Cd pollution

Ricket is caused due to the deficiency of vitamin

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A

D

B

E

At constant temperature when pressure of a gas is plotted against volume, the curve is:

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Slanting straight line.

Parabolic.

Straight line, parallel to pressure axis.

Of neither type.

Substance that does not show the process of sublimation is

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K2Cr2O7

iodine

naphthalene

NH4CI

Arginine, lysine and ornithine are

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Obtained by hydrolysis of proteins

Essential amino acids

Basic amino acids

Derived from butyric acid

NaOH+HCI- NaCI+ H2O. Enthalpy change in the above reaction is called

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Enthalpy of reaction

Enthalpy of Neutralisation

Enthalpy of formation

Enthalpy of combustion

Fungicides are the pesticides which:

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Control the growth of fungus

Kills insects

Kills plants

Kill herb

For which system does the equilibrium constant. K_chas units of

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The electronic configuration of an atom/ion can be defined by the following

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Aufbau principle

Pauli's exclusion principle

Hund's Rule

All the above

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3

4

5

2

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Acidified AgNO_3(aq)

Fehling's solution

Na

Na₂XO_3(aq)

A solution has pH = 0, its H⁺ion concentration is

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1 x 10^-14

1 x 10¹⁴

1 x 10¹

1

Peroxyacetylnitrate (PAN) is an irritant to human beings and it affects:

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Eyes

Ears

Stomach

Nose

The nitrogen present in some fertilizers helps plants

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To fight against disease

To produce fat

To undergo photosynthesis

To produce protein

In a group of periodic table, atomic radii is:

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Remains some.

Increases.

First decreases then increases.

Decreases.

A substance which increases the rate of a reaction without being consumed during the reaction is called

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An autocatalyst

A catalyst

A negative catalyst

All of these

Molar mass of high molecular w.f. polymers ranges from:

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1000 to 10000

10000 to 100000

100000 to 1000000

1000 to 100000000

If an electrophile attacks then ______ bond breaks first

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C - H

O - H

C - O

None of these

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