Following compounds are given(i) CH3CH2OH(ii) CH3COCH3(iii) 

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61.

Following compounds are given

(i) CH3CH2OH

(ii) CH3COCH3

(iii) CH3-(CH)CHOH

(iv) CH3OH

Which of the above compound(s) on being warmed with iodine solution and NaOH, will give iodoform?

  • (i), (iii) and (iv)

  • Only (ii)

  • (i), (ii) and (iii)

  • (i) and (ii)


C.

(i), (ii) and (iii)

Compound having either  group or CH3CHOH- group, give iodoform when warmed when I2 and NaOH. Thus, , CH3-(CH3)CHOH,give iodoform when warmed with I2 and NaOH. (Remember, NaOI oxidises CH3CH2OH to CH3CHO, thus it gives positive iodoform test.)


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62.

A dihaloalkane 'X, having formula C3H6Cl2, on hydrolysis gives a compound, that can reduce Tollen's reagent. The compound 'X' is

  • 1, 2-dichloropropane

  • 1, 1-dichloropropane

  • 1, 3-dichloropropane

  • 2, 2-dichloropropane


63.

Chloroform on reduction with zinc dust and water gives

  • methyl chloride

  • dichloro methane

  • chloro methane

  • methane


64.

Negative inductive effect is shown by

  • -CH3

  • -CH2CH3

  • -NH2

  • (CH3)2CH-


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65.

How many isomeric vicinal-dihalides are possible for the compound having molecular formula C3H6Cl2 ?

  • 1

  • 2

  • 3

  • 4


66.

CHCH HCl excess A Hydrolysis B Na-Hg/ H2OReduction C compound C is

  • ethanal

  • propenal

  • ethanol

  • 2-methyl butan-1-ol


67.

The rate of SN2 reaction is maximum when the solvent is

  • CH3OH

  • H2O

  • DMSO

  • Benzene


68.

The IUPAC name of the compound  is 

  • 1-bromo-1-chloro-4, 4'-bicyclobutane

  • 4-( 4'-chlorocyclobutyl)-1-bromocyclobutane

  • 3-bromo-3'-chloro-1, 1-bicyclobutane

  • 4-(4'-bromocyclobutyl)-1-chlorocyclo butane


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69.

Which of the following compound is used as a refrigerant?

  • CCl4

  • CCl2F2

  • CF4

  • Acetone


70.

What is the chemical composition of Nicol prism?

  • Al2O3

  • CaSO4

  • CaCO3

  • Na3AlF6


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