Chemistry : Organic Chemistry – Some Basic Principles and Techniques

Assertion : trans-butene on reaction with bromine forms racemic mixture.

Reason : trans-compound in trans addition forms two types of stereoisomers.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both assertion and reason are false.

K₂HgI₄ is used to test the following :

• NH₄⁺

• Cl

• Br

• I

Assertion : The lactic acid shows the geometrical isomerism.

Reason : Lactic acid has carbon-carbon double bond.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both assertion and reason are false.

Following pair is separated by yellow ammonium sulphide :

• CdS , Bi₂S₁

• Bi₂S₃ , PbS

• PbS , HgS

• CdS , Ag₂S₃

Following is estimated by Liebig method :

• C and H

• N₂

• Cl₂

• Br₂

Which colourless gas evolves when NH₄Cl reacts with zinc in a dry battery ?

• NH₃

• N₂

• H₂

• Cl₂

Quantitative measurement of nitrogen in an organic compound is done by the method :

• Berthelot method

• Belstein method

• Lassaigne test

• Kjheldahl method

Brown ring in the test of NO₃^-  is formed due to the formation of :

• FeSO₄ ^. NO

• [Fe(SO₄)₂ ^. NO] H₂O

• Fe(SO₄)₃ ^. NO

• none of these

Which kind of fission is favoured by sunlight ?

• Heterolytic fission

• Homolytic fission

• Both (a) and (b)

• None of the above

Which type of isomerism is shown by propanal and propanone ?

• Functional group

• Metamerism

• Tautomerism

• Chain isomerism