Nitrobenzene on treatment with zinc dust and aqueous ammonium chloride gives
C6H5N =N-C6H5
C6H5NH2
C6H5NO
C6H5NHOH.
Methyl--glucoside and methyl--D-glucoside are
epimers
anomers
enantiomers
conformational diastereomers.
Which ofthe following compounds has the highest boiling point?
CH3CH2CH2Cl
CH3CH2CH2CH2Cl
CH3CH(CH3)CH2Cl
(CH3)3CCl
The correct increasing order of the reactivity of halides for SN 1 reaction is
CH3- CH2- X<(CH3)2CH= X <CH2= CH-CH2- X< PhCH2- X
(CH3)2CH-X <CH3-CH2- X < CH2= CH - CH2-X < PhCH2-X
PhCH2- X<(CH3)2CH=X<CH3-CH2-X<CH2= CH- CH2- X
CH2= CH - CH2- X < Ph- CH2- X <(CH3)2CH-X <CH3-CH2- X
Assertion : In the iodometric titration starch is used as an indicator.
Reason : Starch is a polysaccharide.
If both assertion and reason are true and reason is the correct explanation of the assertion.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
If assertion is true, but reason is false.
Both assertion and reason are false statements.
B.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
Starch (C6H10O5)n is a polysaccharide. It consists of two fractions - one is known as -amylose and the other -amylopectin. In iodimetric and iodometric titrations, starch solution is used as an indicator. It gives blue or violet colour with free iodine. At the end point the blue or violet colour disappears when iodine is completely changed to iodide.
Assertion: Anilinium chloride is more acidic than ammonium chloride.
Reason : Anilinium ion is resonance-stabilised.
If both assertion and reason are true and reason is the correct explanation of the assertion.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
If assertion is true, but reason is false.
Both assertion and reason are false statements.
Assertion : 1,3-butadiene is the monomer for natural rubber.
Reason : Natural rubber is formed through anionic addition polymerization.
If both assertion and reason are true and reason is the correct explanation of the assertion.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
If assertion is true, but reason is false.
Both assertion and reason are false statements