Question # 1

The pH of 0.01 N NaOH is.

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12

13

14

11

Steel is an alloy of iron and carbon with limits on the amount of carbon to less than _______ percent.

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2

3

1

4

Which of the following acid radical give organic layer test.

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Cl-

CO3

I

S^2-

An explosive

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Nitroglycerine

Trinitrotoluene

Fluorine perchlorate

All above

Which of the following is not a property of aluminium.

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An efficient electrical conductor

A low density compared to other metals

Is amphoteric

Toxic to humans

Eutrophication is process which involves

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Depletion of ozone layer

Increase in the concentration of ozone in water

Decrease in the concentration of dissolved oxygen in water by algae

Decrease in the level of SO2 in air

The absorbance is directly proportional to the path length in the flame and to the concentration of atomic vapor in flame is a statement of.

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Lambert's law

Beer's law

Honery's law

Starke law

Fertilizers are classified into

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Two major categories

Three major categories

Four major categories

None of above

For quality control of Portland cement, the test essentially done is.

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Setting time

Soundness

Tensile strength

All

Layer of the C -atom in graphite are hold together by

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Covalent bonds

Free electrons

Ionic bond

Van Dar Waals forces

Xenon diflouride is obtained by irradiating a mixture of xenon and fluorine with light from a high pressure.

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Mercury arc

Tungeston arc

Xenon arc

None of above

An equilibrium the free energy change delta F for a reaction is.

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Maximum

Minimum

Zero

Negative

What cast iron has modular or spheroidal graphite?

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Ductile iron

Gray iron

White iron

Raw iron

Which of the following equations represent linear free energy relationship.

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Hammett equation

Taft equation

Helmholtz equation

Differential equation

Organic substance responsible for the smell of the Flowers etc are grouped together in chemistry as.

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Perfumes

Terphenoids

Flavonoids

Alkaloids

Purpose of sizing is.

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To increase the strength

To improve formation

To increase resistance toward water

To remove wastes

Group VA of the periodic table consist of elements.

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3

4

5

6

Which of the following compounds does not show dipole moment.

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CH3OH

HBr

CCl4

CHCl3

When two H atoms approach each other then forces operates.

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Attractive forces

Repulaive forces

Attractive and repulsive

None of above

One arm of each t-RNA terminates in the base sequence.

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UGU

GGC

ACT

CCA

Which of the following methods does not give the weight average molecular weight.

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Sedimentation equilibrium

Sedimentation velocity

Light scattering

Osmotic method

Correct order of increasing ______ I effect of groups is

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----- NO2 >-----------CN > ------------COOH > -------------F

--------F > -------------COOH>----------CN>--------NO2

-----F> -------------CN>--------NO2 > COOH

-------CN > ------------COOH > -----------NO2 >----------F

Which of the following technique in current voltage technique

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Amperometry

Voltammetry

Poteatiomertry

Polarography

In the extraction of iron, the furnace change consists of iron ore, coke and limestone. The function of limestone is to act as.

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An oxidizing agent

A reducing agent

Flux

Slag

Which of the following oxide formed in appreciable quantity in the atmosphere.

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NO

NO2

N2O

All above

Berllium has diagonal relationship with

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Li

Al

B

Na

Which of the following sets of quantum number is possible for an electron in a 4f orbital.

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n = 4,l = 3, m = 4, s = +1/2

n = 4, l= 4, m = +4 , s = +1/2

n = 4, l = 3, m = +1, s = -1/2

n = 4, l = 4, m = +1 , s = -1/2

Sodium silicate is ued

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In fire proofing of wood and textiles

As a preservative of eggs

As a furniture polish

All above

Putrefaction is

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Hydrolysis of proteins

Reduction of proteins

Bacterial oxidation of proteins

All of these

Aluminium is used for.

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Making ultensile & framea

Making alloys

Reducing agent

All above

Which of the following compounds would be most ionic to charcter.

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PbCl4

PbCl2

SnCl4

SnCl2

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