Assertion and Reason Questions for Class 11 Chemistry Chapter 12 Organic Chemistry – Some Basic Principles & Techniques
Directions:
(a) Assertion is correct, reason is correct; reason is a correct explanation for assertion.
(b) Assertion is correct, reason is correct; reason is not a correct explanation for assertion
(c) Assertion is correct, reason is incorrect
(d) Assertion is incorrect, reason is correct.
Table of Contents
Q.1. Assertion: Energy of resonance hybrid is equal to the average of energies of all canonical forms.
Reason: Resonance hybrid cannot be presented by a single structure.
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Answer: (d)Q.2. Assertion: Aniline is better nucleophile than anilium ion.
Reason: Anilium ion have +ve charge.
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Answer: (a)Q.3. Assertion: Different number of electron pairs are present in resonance structures.
Reason: Resonance structures differ in the location of electrons around the constituent atoms.
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Answer: (d)Q.4. Assertion: Simple distillation can help in separating a mixture of propan-1-ol (boiling point 97°C) and propanone
(Boiling point 56°C).
Reason: Liquids with a difference of more that 20°C in their boiling points can be separated by simple distillation.
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Answer: (a)Q.5. Assertion: Components of a mixture of red and blue inks can be separated by distributing the components between stationary and mobile phases in paper chromatography.
Reason: The coloured components of inks migrate at different rates because paper selectively retains different components according to the difference in their partition between the two phases.
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Answer: (a)
Q.6. Assertion: Sulphur present in an organic compound can be estimated quantitatively by Carius method.
Reason: Sulphur is separated easily from other atoms in the molecule and gets precipitated as light-yellow solid.
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Answer: (c)Q.7. Assertion: A primary suffix indicates the type of linkage in the carbon atom.
Reason: CN is a Primary suffix
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Answer: (c)Q.8. Assertion: The general formula for a dihydric alcohol is CnH2n(OH)2
Reason: Ethylene glycol is a dihydric alcohol
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Answer: (b)Q.9. Assertion: Chain isomerism is observed in compounds containing four or more than four carbon atoms
Reason: Only alkanes show chain isomerism
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Answer: (c)Q.10. Assertion: But-1-ene and 2-methylprop-1-ene are position isomers.
Reason: Position isomers have same molecular formula but differ in position of functional group or C = C.
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Answer: (d)Related Posts
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