Question # 1

The height to which a liquid will rise in an open capillary tube is inversely proportional to.

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Temperature of the liquid

Surface tension

Density of the liquid

Air pressure

The pH of milk is

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6.0

6.5

7.0

7.5

Which of the following is homopolymer.

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Starch

Plexiglas

Orlon

All of these

Which of the following is an example of molecular solids.

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MgO

ZnO

Ice

Graphite

Which of the halogens has lowest bond energy.

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Cl2

Br2

F2

I2

Which of the following is capable of forming zwitter ion.

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Amino acids

Halo acids

Hydroxy acids

All of these

Which of the following anionic species is not separated by gravimetric analysis.

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Cl-

SO4

CH3COO-

PO4

What letter suffix steel identification means that it is steel with boron as an alloying elements.

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xxL xx

xxBxx

xxHxx

xxKxx

Which of the following statement is related with CO.

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It is a colorless and tasteless gas

It has less affinity to words hemoglobin

It has a boiling point of -192 ^oC

It is a dangerous asphyxiant

Which of the following statement is not correct with respect to hardness of water.

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It is due to soluble salts of Na

it is due to soluble salts of Ca

It is due to soluble salts of Mg

It is due to soluble salts of Fe

The bonding of transition metal complex was not well understand until the pioneer work of.

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Ps JAISWAL

GS MANKU

BR thukral

Alfred Weriner

Which of the following is used to make non-stick material.

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Vinyl cyanide

Tetrafluoroethene

Vinyl chloride

Styrene

In compressive strength of a nanotube ______ its tensile strength.

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I less than

Is greater than

Is equal to

Less than or equal to.

Which of the following chemical strong oxidizing agent is used in COD test.

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KMnO4

H2SO4

CH3COOH

K2Cr2O7

Equal volumes of all gases, under similar conditions of temperature and pressure, contain equal number of molecules. This is a statement of.

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Graham's law

Dalton's law

Avogadro' law

Boyle's law

Which of the following statement is not correct.

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The element with highest IE belongs to group 18

In each period the element with lowest IE belongs to group I

In each period the element with highest IE is a noble gas

In the second period as we move from left to right, ionization energy increases reqularly.

Which of the following is not a characteristic of phthalocyanine dyes.

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They are metal complex

the are insoluble in water

They have porphin nucleus

They are used in photographic plates

What is the ASTM tension testing designation for standard method for steel products.

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A 370

E 345

E8

E 9

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

The emission of light in a biological reaction is known as

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Fluorescence

Phosphorescence

Bioluminescence

Photolysia

Which of the following to non -auditory effect of noise on human body.

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Changes in the Vascular tone

_{Increase in the blood pressure}

Wakening of the coloured vision

All above

In a period, the element with biggest electron affinity belong to.

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Group 1

Group 2

Group 17

Group 18

The smallest cluster of carbon atoms in Bucky balls known till today consists of ___________ carbon atoms.

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75

20

60

15

NH4OH in the presence of H2S is used as a group reagent for which of the following group.

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Group I

Group II

Group III

Group IV

Example of intra molecular hydrogen bonding.

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O-nitrophenol

O-hydroxy benzaldehyde

O- hydroxy benzoic acid

All of the above

What combination of elements has high electrical resistance high corrosion resistance, and high strength at red hear temperatures, making it useful in resistance heating.

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Aluminium bronze

Nichrome

Hastelloy

None of above

Monel metal is a alloy of Ni which constrains Ni uptown

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50%

60%

70%

80%

The first step of formation of sugar is

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Extraction

Washing

Cutting

Clarifying

The number of formula weight of the solute dissolved per dm3 of the solution is called.

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Mole fraction

Normality

Formality

Molaiity

Pi bond is formed

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By the overlapping of atomic orbitals on internuclear axis

By transference of electrons

By sidewise overlapping to half filled p orbitals

By overlapping of s-orbitals with p orbitals

Which of the following analytical method is based on the rotation of light ratiation

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Refractomerty

Polarimetry

Interformetry

Polarography

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