Some Basic Principles and Techniques's Question 55 | Chemistry XI - Part 2 | NCERT Exemplar Questions

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MCQ (Single Correct Answer)

Assertion (A) Simple distillation can help in separating a mixture of propan-1-ol (boiling point $97^{\circ} \mathrm{C}$ ) and propanone (boiling point $56^{\circ} \mathrm{C}$ ).

Reason (R) Liquids with a difference of more than 201 CC in their boiling points can be separated by simple distillation.

Both $A$ and $R$ are correct and $R$ is the correct explanation of $A$

Both $A$ and $R$ are correct but $R$ is not the correct explanation of $A$

Both $A$ and $R$ are not correct

A is not correct but $R$ is correct

MCQ (Single Correct Answer)

Assertion (A) Energy of resonance hybrid is equal to the average of energies of all canonical forms.

Reason (R) Resonance hybrid cannot be presented by a single structure.

Both A and R are correct and R is the correct explanation of A

Both $A$ and $R$ are correct but $R$ is not the correct explanation of $A$

Both A and R are not correct

A is not correct but R is correct

MCQ (Single Correct Answer)

Assertion (A) Pent-1-ene and pent-2-ene are position isomers.

Reason (R) Position isomers differ in the position of functional group or a substituent.

Both A and R are correct and R is the correct explanation of A

Both $A$ and $R$ are correct but $R$ is not the correct explanation of $A$

Both A and R are not correct

A is not correct but R is correct

MCQ (Single Correct Answer)

Assertion (A) All the carbon atoms in $\mathrm{H}_2 \mathrm{C}=\mathrm{C}=\mathrm{CH}_2$ are $s p^2$ - hybridised.

Reason (R) In this molecule all the carbon atoms are attached to each other by double bonds.

Both $A$ and $R$ are correct and $R$ is the correct explanation of $A$

Both $A$ and $R$ are correct but $R$ is not the correct explanation of $A$

Both $A$ and $R$ are not correct

A is not correct but R is correct

MCQ (Single Correct Answer)

Assertion (A) Sulphur present in an organic compound can be estimated quantitatively by Carius method.

Reason (R) Sulphur is separated easily from other atoms in the molecule and gets precipitated as light yellow solid.

Both $A$ and $R$ are correct and $R$ is the correct explanation of $A$

Both $A$ and $R$ are correct but $R$ is not the correct explanation of $A$

Both A and R are not correct

A is not correct but R is correct

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