CBSE
Multiple Choice QuestionsAssertion : The Dumas method is more applicable to nitrogen containing organic compounds than the Kjeldahl's method.
Reason: The Kjeldahl's method does not give satisfactory results for compounds in which nitrogen is directly linked to oxygen.
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
The major organic product formed in the following reaction.
Arrange the following compounds in increasing order of rate of reaction towards nucleophilic substitution :
I < II < III
I < III < II
III < II < I
II < III < I
The purity of an organic compound is determined by
Chromatography
Crystallisation
melting or boiling point
both( A )and (C)
Among the following, the achiral amino acid is
2-ethylalanine
2-methylglycine
2-hydroxymethylserine
tryptophan
Methoxy methane and ethanol are :
positionl isomers
chain isomers
functional isomers
optical isomers
Isopropylbenzene on air oxidation in the presence of dilute acid gives
C6H5COOH
C6H5COCH3
C6H5CHO
C6H5OH
Lassaigne's test for the detection of nitrogen fails in
H2N-CO-NHNH2.HCl
NH2-NH2.HCl
C6H5-NH-NH2.HCl
C6H5CONH2
Assertion : Chlorobenzene is more reactive than benzene towards the electrophilic substitution reaction.
Reason : Resonance destabilises the carbocation.
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 : When acetamide reacts with NaOH and Br,, methyl amine is formed.
Reason : The reaction occurs through intermediate formation of isocyanate.
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
