Question # 1

Elments re classified into four blocks depending upon

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Shell

Atomic mass

Sub -Shell

Atomic Number

A state of matter whose properties are between those of liqids and crystalline solids.

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Plasma

dark matter

Liquid crystal

Supercriticl fluid

The study of theinteraction between drugs and biological targets, as wellas the development of new medicinal agents.

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Inorganic Chemistry

Organic chemistry

Medicinal Chemistry

Environmental chemistry

Empirical formula of Benzene is.

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CH2O

CH

C2H

CH2

The colour of hydrated cobalt(II) chloride solid is

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White

Black

Blue

Pink

Such reaction which continue in both directins are called.

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Dynamic

Irreversible

Reversible

Non- reactive

Which of the following cannot be classified as Arrhenius acid

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CO2

HNO3

H2CO3

H2SO4

Which halogen memebr exists in a liquid stte at room temperature

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Bromine

Chlorine

Fluroine

Iodine

The structure of C atom in diamond is.

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Pentagonal

Triangle

Hexahedral

Tetrahedral

-------------acts are reserve energy sources.

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Enzymes

Vitamins

Proteins

Lipids

The fore of attraction betwene water molecule is.

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Ionic bonding

Covalent bonding

Hydrgen Bonding

Co ordinate Covalent bonding

Which one of these pollutants are not found in car exhaust fumes?

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CO₂

O₃

NO₂

SO₂

General formula of Alkyl radical is..

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C₆H_2n-2

C_nH_2n+2

C₁₁H_2n-1

C_nH_2n-2

The pH of acid rain.

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2

3

4

5

In an irreversible reaction dynamic equilibrium:

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Never establishes

Established before the completion of reaction

Establishes after the completion of reaction

Establishes readily

Tetra saccharides are classified under.

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Monosaccharides.

Oligosaccharides

Polysaccharides

All of them

At the time of partition, How many industries wee present in Pakistan.

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30

32

34

40

50% dextrose contains approximate amount of energy.

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250 calories

16 Calories

170 calories

120 calories

Global warming causes rising of the sea level. The cause of global warming is.

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CO₂ gas.

SO₂gas.

NO₂gases.

O₃gas.

Which pollutant is not found in car exhaust gases?

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CO

O₃

NO₂

SO₃

A sea level the boiling point of water is.

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0^oC

98^oC

100^oC

110^oC

The pH of water containing CO₂ is

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4-6

5.6-6

6-7

7-8

According to Boyle's law which parameters give a straight line parallel to x -axis when we plot a graph between

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P and V

P and 1/V

P and PV

V and T

Oxidation number of carbon in NaHCO₃

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+4

-6

+6

+2

A molecule has two ions pairs and two bond pairs around the central atom. The shape of molecule is.

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Linear

Pyramidal

Angular

Tetrahedral

Which one is not example of a sublimate.

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NH4Cl

I

NaCl

Benzoic Acid

Molal boiling point elevation depends upon

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Nature of solvent

Natrue of solute

Vapour pressure of solution

None of these

Which substance is nto a dehydrating agent.

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CaCl3

CdCl2

Silica gel

P2O5

In Al2O3, the ratio between the ions is

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1 :2

2:1

2:3

3:2

the number of Al³⁺ ion sin AlCl₃is 2.007 x 10²³. The number of Cl- ions are.

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6.02 x 10²³

3.01 x 10²³

1.5 x 10²³

The number of bonds in nitrogen molecules is.

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One pi and one sigma

One pi and two sigma

Thre sigma only

Two pi and one sigma

Which of the following statement is contrary to the first law of thermodynamics

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An equivalent amount of heart energy can neither be created nor destroyed

One form of energy can be transferred into an equivalent amount of other kinds of energy

In an adiabatic process, the work done is independent of its path

Continuous production of mechanical work without supplying an equivalent is amount of heat possible

Unit of mole fraction is

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mol dm-3

mol kg-1

g dm-3

No unit

Which halogen will react spontaneously with Au to produce Au3+

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Br2

F2

I2

Cl2

What is clinker

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Roasted calcareous material

Roasted argillaceous material

Roasted calcareous and argillaceous material

Roasted gyposum

Refrigeration capacity of liquid neon is greater than liquid helium by

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80 times

50 times

40 times

10 times

Which compound is the most reactive

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Benzene

Ethene

Ethane

Ethyne

Vinyl acetlylene reach with HCl to form

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Polycetylene

Benzene

Chloroprene

Divinylacetylene

Which element reacts with carbon to form metal carbide.

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Li

Na

K

All of these

Point out the element which forms super oxide

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Li

Na

K

C

Which one of the following compounds is not derivative of NH3.

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Aniline

Hydrazine

Phenyl hydrazine

Picric acid

Element of which group reacts with hydrogen and form ionic hydrides.

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II A

IV A

V A

VI A

Which one the following a dihydric alcohol

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Ethanol

Cyclo hexanol

Glycerol

Glycol

The nitrogen present in some fertilizers helps plants

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to fight against diseases

to produce fat

to undergo photosynthesis

to produce protien