Question # 1

Micronutrients are required in quantity ranging from:

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4----40g

6------200kg

6-----200g

4-------40kg

Cement is mixture of so many compounds roasted in rotary kiln.Which substance has greater percentage:

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Lime

Alumina

Silica

Magnesia

Always carboxylic acid produced will have number of carbon atoms from carbon atom in alkyl nitriles:

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One more

Two more

Equal & same

One less

Polyesters resins have special use in:

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Clothing

Paints

Emulsion

Floor covering

If increase in temperature and volume of an ideal gas is two times, then the initial pressure P changes to

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4P

P

2P

3P

Fresh water of total earth water is:

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1%

2%

3%

4%

Stronger is the oxidizing agent, stronger is the

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emf of cell

Oxidation potential

Reduction potential

A line parallel to x-axis is obtained when graph is drawn between

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Volume on abscissa & pressure on ordinate

Volume on abscissa & PV on ordinate at all conditions

Pressure on abscissa & PV on ordinate at constant temperature

None of these

Polymers class is:

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homopolymer

copolymer

ter polymer

All of these

Insoluble ferric oxide is produced in the pH range:

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1 to 8

6 to 9

3 to 13

8 to 13

Geometry of NH3 is

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^Tetrahedral

Square planer

Pyramidal

Linear

The organic compounds which derivative of hydrocarbons due to oxygen is:

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Phenol

Alcohol

Alkyl halide

Either

The reduction potential to copper electrode is +0.34 V and that of Zn electrode is -0.76 V. when these two are coupled the e.m.f. of the cell is

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-0.42 V

+0.42

-1.10 V

+1.10 V

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The value of K_pfalls with a rise in temperature

The value of K_pfalls with increasing pressure

Adding V₂O₅catalyst increase the equilibrium yield of sulphur trioxide equilibrium yield of sulphur trioxide

The value of K_pis equal to K_c

Which of the following reactions is used for detecting presence of carbonyl group?

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Reaction with hydroxylamine

Reaction with hydrazine

Reaction with phenyl hydrazine

All

Which of the following forms a toxic substance in blood by combing with hemoglobin?

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Carbon dioxide

Carbon monoxide

Oxygen

Methane

Transition elements are called so because:

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Form interstital sompounds

have high m.p

In between 's' and' 'p' block elements

All of these

All the elements belongs to the 2nd period are

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Normal elements

Transition elements

Stable elements

Halogens

The limiting line of Blamer series in hydrogen spectrum lies in

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Visible regions

Ultraviolet region

Infrared region

x-rays region

Type of isomerism in BrCH=CHBr is:

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Structural isomerism

Conformational isomerism

Geometrical isomerism

Positional isomerism

SO₂and NO₂produce pollution by increasing

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Alkalinity

Acidity

Neutrality

Buffer action

CsF is an ionic compound because:

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High I.P of Cs and high E.A of F.

High I.P of Cs and low E.A of F.

Low I.P of Cs and high E.A of F.

Low I.P of Cs and low E.A of F.

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