Question # 1

H3O+ can't accept a Ip because

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it has positive charge

The central atom is not electron deficient

The shell of oxygen has reached its limit

it already has a coordinate bond

The amount of heat required to convert one mole of solid into liquid is called

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molar heat of fusion

heat of fusion

heat of vaporization

heat of liquefaction

During the nitration of benzene the nitrating agent is

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NO3

NO2+

NO2-

HNO3

Simple sugars are:

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Monosaccharides

Disaccharides

Oligo saccharides

Trisaccharides

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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V and T

P and V

P and 1/V

P and PV

Ecosystem is a smaller unity of

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Nydosphere

Biosphere

Lithosphere

Attmosphere

Which of the following substance is used as filler or additive in paper making:

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Glucose

Starch

Fructose

Cellulose

The percentage of SO₂ produced by volcanoes is:

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47%

57%

67%

77%

Which of the following contains maximum of number of molecules?

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100 cc of CO₂ at STP

150 cc of N₂at STP

50 cc of SO₂ at STP

200 cc of NH₃ at STP

The bond angle between any two sp hybrid orbitals is A.109.28°

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107.09°

120°

90°

80°

Water is purified by:

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Filtration

aeration

coagualation

All of these

Value of rate constant k is specific for a reaction, and varies from reaction to reaction. The value of k of a reaction changes with

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Time

Temperature

Concentration of reactants

Order of reaction

If the difference of pKa values of the two acids is 2, then

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Acid with smaller pKa is 10 times stronger acid

Acid with greater pKa is 10 times stronger acid

Acid with smaller pKa is 100 times stronger acid

Acid with greater pKa is 100 times stronger acid

The rate of reaction :

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Increase as the reaction proceeds.

Decreases as the reaction proceeds.

Remains the same as the reaction proceed.

May decrease or increase as the reaction proceeds.

Which of the following expressions show a heterolytic bond fission

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The liquid obtained after passing the mixture through filter paper is termed as:

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Extract

Residue

Filtrate

Sample

Which one of the following is a water soluble vitamin

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Niacin

Riboflavin

Tyrosine

Ascorbic acid

The hydrocarbons having double bonds normally end with suffix

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Ane

Ene

Yne

Oic

Which one of the following is the most abundant organic substance found in nature

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Fructose

Starch

Glucose

Cellulose

Bond angle is minimum for

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H₂O

H₂S

H₂Se

H₂Te

The orbital in Rutherford's model is

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Spiral

Circular

Both

None

Which of the following nitrogen fertilizer contains more nitrogen

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NaNO₃

KNO₃

NH₄NO₃

Urea

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