DEMOEXAM | ScoreExams

Question 1 of 10

The name of the compound in figure is

A(2Z, 4Z)-2, 4-hexadiene

B(2Z, 4E)-2, 4-hexadiene

C(2E, 4Z)-2, 4-hexadiene

D(4E, 4Z)-2, 4-hexadiene

E(2E, 4E)-2, 4-hexadiene

Question 2 of 10

When 32.25g of ethyl chloride is subjected to dehydrohalogenation reaction the yield of the alkene formed is 50%. The mass of the product formed is: (atomic mass of chlorine is 35.5)

A14g

B28g

C64.5g

D56g

E7g

Question 3 of 10

The angle of minimum deviation in an equilateral prism of refractive index 1.414 is

A60°

B30°

C90°

D45°

E15°

Question 4 of 10

An organic compound A(C₄H₉Cl) on reaction with Na/diethyl ether gives a hydrocarbon which on monochlorination gives only one chloro derivative. A is

At-butyl chloride

Bs-butyl chloride

Cisobutyl chloride

Dn-butyl chloride

Enone of these

Question 5 of 10

A flask was filled with {tex}CCl_4{/tex} vapours at a particular temperature and pressure. These vapours were then replaced by oxygen gas at the same temperature and pressure, the mass of {tex}CCl_4{/tex} vapours will be

Asame as that of {tex}O_2{/tex}

Bfive times heavier than that of {tex}O_2{/tex}

Ctwo times heavier than that of {tex}O_2{/tex}

Done fifth of that of {tex}O_2{/tex}

Question 6 of 10

In Young's double slit experiment, the width of one of the slits is slowly increased to make it twice the width of the other slit. Then in the interference pattern:

Athe intensity of maxima increase while that of minima decrease

Bintensities of both maxima and minima decrease

Cthe intensities of both maxima and minima remain the same

Dthe intensities of both maxima and minima increase

Question 7 of 10

Basic properties of {tex}TiO_2, ZrO_2{/tex} and {tex}HfO_2{/tex} are in the order:

A{tex}TiO_2 < ZrO_2 < HfO_2{/tex}

B{tex}ZrO_2 < HfO_2 < TiO_2{/tex}

C{tex}HfO_2 < TiO_2 < ZrO_2{/tex}

D{tex}TiO_2 < HfO_2 < ZrO_2{/tex}

Question 8 of 10

B.H.C is prepared by treating benezene with

AChlorine gas in the presence of sunlight

BChlorine gas in the presence of {tex} FeCl_3{/tex}

CBleaching powder in the presence of {tex}NaOH{/tex}

DChloral hydrate in the presence of {tex}H_2SO_4{/tex}

Question 9 of 10

The least stable free radical is

A

{tex} CH_{3}CH_{2}{/tex}

B

{tex}CH_{3}CH_{2}CH_{2}{/tex}

C

{tex} (CH_{3})_{2}CH{/tex}

D

{tex} CH_{3}{/tex}

Question 10 of 10

The correct order of ionic radii of {tex}Y^{3+}, La^{3+}, Eu^{3+}{/tex} and {tex}Lu^{3+}{/tex}is

A{tex}Y^{3+} < La^{3+} + Eu^{3+} < Lu^{3+}{/tex}

B{tex}Lu^{3+} << Y^{3+} < Eu^{3+} < La^{3+}{/tex}

C{tex}Lu^{3+} < Eu^{3+} < La^{3+} < Y^{3+}{/tex}

D{tex}La^{3+} < Eu^{3+} < La^{3+} < Y^{3+}{/tex}