Question # 1

___________ surfactants perform well over a wide range of water hardness and pH.

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Anionic

Cationic

Nonionic

Neutral

Granulated sugar contains _____________% sucrose

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80

99.30

60

90

DTA is of great importance in which of the following field

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Ceramic

Metallurgy

Mineralogy

All

in the system of designating wrought aluminum alloys the letter F that follows the number indicates what condition of the alloy.

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As fabricated

Calcined

Annealed

Strain hardened

Select the major product obtained from the addition HBr to 1-methyl cyclohexene.

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1- bromo -2- methyl cyclohexane

6- bromo-1- methyl cyclohex - 1- ene

3- bromo-1- methyl cyclohex -1- ene

1- bromo-1- methyl cyclohexane

Zero group elements are called as

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Inert gases

Rare gases

Noble gases

All of above

Which of the following is the second anciently known metal.

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Nickel

Copper

Gold

Silver

During the preparation of ethane by Kolbe's electrolytic method using inert electrodes the pH of the electrolyte.

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Increases progressively as the reaction proceeds

Decreases progressively as the reaction proceeds

Remains constant throughout the reaction

May decrease if the concentration of the electrolyte is not very high

Aromatic amine (X) was treated with alcoholic potash and another compound (Y) when foul smelling gas was formed with formula C2H3N (Y) was formed by reacting a compound (Z) with Cl2 in the presence of slaked lime . The compound (Z) is

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C6H5NC

CHCl3

CH3CH2OH

C6H5NH2

An example of cyclic polyterpenoid is

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Myrcene

Alcoholic

Synthetic rubber

Natural rubber

Which of the following is a natural polymer

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Nylon

Leucite

Cellulose

Polystyrene

Are used as water repellents

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Carbides

Silicon

Silicones

Silicates

When two bodies have equality of temperature with a 3rd body they in turn have equality of temperature with each other. This is a statement of.

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First law of thermodynamics

Zeroth law of thermodynamics

Second law of thermodynamics

Third law of thermodynamics

Which of the following impurities are present with the bauxite.

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Silica

Ferric oxide

Alumina

Both silica and ferric oxide

The terpenoid responsible fo the smell

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Camphor

Genenial

Citral

Carvone

For a given mass of a gas at constant temperature, if the value V becomes a times, the pressure will become.

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3P

P/3

9P

3P/T

Electron affinities of halogens are in the order.

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F > Cl > Br > I

Cl > F > Br > I

Cl > Br > I > F

Cl > Br > F > I

The pH of the 1.3 x 10^-4 NH₄Cl is

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1.3

4.0

2.886

3.886

Potassium crystallizes in a body centered lattice. Hence, the coordination number of potassium in potassium metal is.

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4

6

8

12

Which ratio decides the efficiency nano substance.

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Weight /volume

Surface area/volume

Volume/weight

Pressure/volume

The relative populations of gourd state and excited state populations at a given flame temperature can be estimated using.

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Boltzmann distribution law

Maxwell law

Lambertie law

Beer's law

The following oxo acids have been arranged in the order decreasir acid strength identify the correct order.

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III > IV > II > I

III > II > I >IV

I > II >III > IV

IV > III > II > I

Glucose and fructose react with which of the following reagent to give same product.

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Tollen's reagent

Phenyl hydrazine

Hydroxyl amine

All of these

Which of the following process is used for the removal of particulates.

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Wet removal by precipitation

Sedimentation

Diffusion and impaction

All above

Concentrated aqueous sodium hydroxide can separate a mixture of.

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Al3+ and Sn2+

Al3+ and Fe3+

Al3+ and Zn2+

Zn2+ and Pb2+

A catalyst

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Actually participates in the reaction

Changes the equilibrium concentration of the products

Does not affect a reaction energy path

Always decreases the rate for a reaction

Metallic magnesium is obtained by

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Reduction of MgO with Coke

Electrolysis of an aqueous solution of MgCl2

Electrolysis of molten MgCl2

Displacement of magnesium by iron form MgCl2 solution.

The one in which the acceptor atom is of low positive charge, Large size and has several outer electrons which can be easily excited is a.

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Soft base

Hard Base

Soft acid

Hard acid

With which one of the following configurations, the lowest value of first IE is associated.

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Is2, 2s2, 2p6, 3s1

1s2, 2s2, 2p5

1s2, 2s2, 2p6

1s2, 2s2, 2p6, 3s2, 3p2

Which of the following term refers to nearness between several measurements of the same quantity.

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Accuracy

Precision

Standard error

Standard error of mean

Monomers are Teflon is

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Monochloroethene

1,2- Difluoroethene

1,1,2- Trifluoroethene

Tetrafluoroethene

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