Question # 1

Which statement is incorrect

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pH and [OH-] are inversely related to cach other

pOH and [OH-] are inversely related to each other

pH and [OH-] are directly related to each other

pOH means potential of hydroxyl ion concentration

NaCl is completely ionized in water due to presence of

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hydrogen bonding

dipole dipole forces

ion dipole forces

London dispersion forces

The reaction between fat and NaOH is called

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Esterification

Hydrogenolysis

Fermentation

Sponification

The kinetic theory of gases predicts that total kinetic energy of a gaseous assembly depends on

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Pressure of the gas

Temperature of the gas

Volume of the gas

Pressure,temperature,and volume of the gas.

Which is the least reactive of all the alkali metals

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Li

Na

K

Cs

Joule is a unit of energy which is defied as

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Kgm^-2s^-2

Kgm²s^-1

Kgms^-2

Kgm²s^-2

Value of gas constant R is

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8.314 J K^-1mol^-1

0.082 J K^-1mol^-1

273.15 J K^-1mol^-1

101325 J K^-1mol^-1

Temperature at which molecular motion ceases is called

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Absolute zero

Absolute temperature

Critical temperature

Difficult to predict

CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy?

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50000

20000

100000

10000

Strong dipole-dipole forces among the liquid molecules are responsible for

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very high heat of vaporization

very low heat of vaporization

cannot be predicted

negligible forces are these

The dehydration of ethyl alcohol with concentrated H2SO4 at 140°C gives

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Ethene

Alcohol

Diethyl ether

Carboxylic acid

Which one of the following statements about glucose and sucrose is incorrect?

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Both are soluble in water

Both are naturally occuring

Both are carbohydrates

Both are disaccharides

Matter is defined as any thing which occupies space and:

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Molecules

Mass

Compound

Molecules

[Ti(H₂O)₆]⁺³ion absorbs colour:

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Blue

Yellow

Green

Red

Micro-nutrients are required in quantity ranging form:

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4g-40g

6g-200g

6kg- 200 kg

4kg- 40kg

Which of the following charge

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Li

Be

H

He

Enthalpy of neutralization of all the strong acids and strong bases has the same value because

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Neutralization leads to the formation of salt and water

Strong acids and bases are ionic substances

Acid always give rise to H⁺ions and bases always furnish OH^-ions

The net chemical change involve the combination of H⁺and OH^-ions to form water

The state of hybridization of carbon atom in methane is:

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sp³

sp²

sp

dsp²

Group l-A elements react with water fastly than the reaction of group ll-A elements because

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l_Aelements are more soft then ll_A

l_Aelements are non-metals

l_Aelements have 1 electron in their outermost s-orbital and are strongly electropositive

l_Aelements make ionic bond

He Ar and Ne are:

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Mono-atomic molecules

Hetero atomic molecules

Poly-atomic molecules

Diatomic molecules

The reagent which forms crystalline osazone derivative when treated with glucose is

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Fehling solution

Phenyl hydrazine

Benedict solution

Hydroxyl amine

Replacement of hydrogen atom by - SO₃H group in benzene is called

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Nitration

Alkylation

Sulphonation

Acylation

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