CBSE
Multiple Choice QuestionsAssertion : 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.
Which colourless gas evolves when NH4Cl reacts with zinc in a dry battery ?
NH3
N2
H2
Cl2
Following pair is separated by yellow ammonium sulphide :
CdS , Bi2S1
Bi2S3 , PbS
PbS , HgS
CdS , Ag2S3
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.
Quantitative measurement of nitrogen in an organic compound is done by the method :
Berthelot method
Belstein method
Lassaigne test
Kjheldahl method
(I) and (II) are :
enantiomers
diastereomers
meso compound
identical
K2HgI4 is used to test the following :
NH4+
Cl
Br
I
Following is estimated by Liebig method :
C and H
N2
Cl2
Br2
Assertion :Tertiarycarbonium ions are generally formed more easily than primary carbonium ions.
Reason : Hyperconjugation as well as inductive effect due to additional alkyl groups stabilize tertiary carbonium ions.
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.
Assertion : Pyrrole is an aromatic heterocyclic compound.
Reason : It has cyclic delocalised 6 electrons.
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.
