Question # 1

Benzene reacts with Ethyl chloride in presence of AICls to give

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Benzalchloride

Benzyl chloride

Ethyl benzene

Benzotrichloride

What is the morality of a solution containing 15g of urea is 500cm³ of solution?

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1M

0.5M

2M

1.5M

The conversion of molecules of A to B follows a second order kineties. Doubling the concentration of A will inerease the rate of formation of B by a factor of

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2

4

1/2

1/4

Which of the following is used as coagulant for purification potable water?

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Copper sulphate

Barium sulphate

Alum

Nickel sulphate

Variable Oxidation state of is related to transition elements

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empty d-subshells

Completely filled

Partially filled d-subshell

d-d transition

How magnesium reacts with water?

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In frozen ice water

With cold water

In with steam

In hot state

As the number of carbon atoms increase the number of isomers also increase. The six carbon compound hexane has as many as:

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10 isomers

3 isomers

5 isomers

6 isomers

Which of the following is a non-typical transition element?

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Cr

Zn

Mn

Fe

Which of the following does not represent a type of crystal system

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Triclinic

Monoclinic

Rhombohedral

Isotropical

Carboxylic acids reacts with sodium carbonate, & gas evolved in this reaction

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CO2

H2

CO

Both a &b

Which fiber contains 85% acrylonitrile by weght?

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azlon fiber

saran fiber

acrylic fiber

rayon fiber

Which one of the following statement is wrong regarding differences between aldehydes and ketones

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Aldehydes undergo reduction to form primary alcohols while ketones undergo reduction to form secondary alcohols

Aldehydes undergo oxidation to form acids having less number of carbon atoms while ketones undergo oxidation to form acids having same number of carbon atoms

Aldehydes give positive silver mirror test while ketones give negative -mirror test

Aldehydes can undergo polymerization while ketones cannot undergo polymerizarion

All C - H bond lengths of benzene ring is

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1.07A°

1.09A°

1.08A°

None

Which of the following is not an ortho-para directing group

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Which of the following is an example of ketohexose?

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Mannose

Galactose

Maltose

Fructose

An organic compound 'X' on treatment with acidified K₂Cr₂O₇gives a compound 'Y' which reacts with I₂and sodium carbonate to form Triodomethane. The compound 'X' is

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CH₃OH

CH₃CHO

CH₃CH(OH)CH₃

CH₃COCH₃

The rate of reaction :

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Decreases as the reaction proceeds

Increases as the reaction proceeds

May decrease or increase reaction proceeds

Remains same as the reaction proceeds

Caustic soda is obtained by electrolysis of conc. aqueous solution of NaCI in a cell called

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Daniell's cell

Nelson's cell

Down's cell

Voltaic cell

Which one is used as a fuel for internal combustion engines in many European countries and Brazil

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C₂H₅OH

CH₃OH

CH₃COOH

C₂H₂

Carboxylic acids on complete reduction in the presence of HI and red Phosphours gives:

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esters

alcohols

alkanes

aldehydes

1-butene an 2-butene are an example of

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Chian isomerism

Positional isomerism

Metamerism

Functional group isomerism

The addition of HCN to carbonyl compounds is an example of

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Nucleopihlic substituion

Electrophilic addition

Nueleophilic addition

Electrophilic substitution

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