Subject

Chemistry

Class

JEE Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

21.

The osmotic pressure of a dilute solution of an ionic compound XY in water is four times that of a solution of 0.01 M BaCl2 in water. Assuming complete dissociation of the given ionic compounds is water, the concentration of XY (in mol L-1 ) in solution is 

  • 4 × 10-4

  • 16 × 10-4

  • 4 × 10-2

  • 6 × 10-2


22.

The major product of the following reaction is:


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23.

Aniline dissolved in dilute HCl is reacted with sodium nitrite at 0ºC. This solution was added dropwise to a solution containing equimolar mixture of aniline and phenol in dil. HCl. The structure of the major product is


A.

The structure of the major product is-

In equimolar mixture of aniline, phenol in dil.HCl, aniline in more reactive, as slightly acidic medium supports.


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24.

The major product of the following reaction is

CH3C≡CH (ii0 Dl(i)DCl (equilaterent.)

  • CH3C (I) Cl CHD2

  • CH3CD (Cl) CHD (I)

  • CH3CD2CH(Cl) (I)

  • CH3CD(I)CHD (Cl)


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25.

The increasing order of reactivity of the following compounds towards aromatic electrophilic substitution reaction is

  • D < A < C < B

  • B < C < A < D

  • D < B < A< C

  • A < B < C < D


26.

Which of the following statement is not true about sucrose?

  • On hydrolysis, it produces glucose and fructose

  • It is also named as invert sugar

  • It is non-reducing sugar

  • The glycosidic linkage is present between C1 of α-glucose and C1 of β- fructose.


27.

The major product of the following reaction is


28.

The one that will show optical activity is: (en = ethane – 1,2, -diamine)


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29.

The major product of the following reaction is:


30.

The major product of the following reaction is

CH3CH=CHCO2CH3 LiAlH4

  • CH3CH2CH2CO2CH3

  • CH3CH2CH2CH2OH

  • CH3CH2CH2CHO

  • CH3CH=CHCH2OH


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