NEET Organic Chemistry Some Basic Principles and Techniques — Set 13

Question 1

Which reagent is used in Lassaigne’s test to detect halogens in an organic compound?

Accepted Answer

Halogens form $ \ce{NaX} $ (X = Cl, Br, I) in Lassaigne’s test, detected by forming a precipitate with silver nitrate ($ \ce{AgNO3} $).

Question 2

What is the hybridization of the carbon atom in $ \ce{HC#N} $?

Accepted Answer

In $ \ce{HC#N} $ (hydrogen cyanide), the carbon forms a triple bond with nitrogen and a single bond with hydrogen, indicating $ sp $ hybridization.

Question 3

Which compound can exhibit position isomerism with $ \ce{CH3CH2CH2OH} $?

Accepted Answer

Position isomerism involves the same functional group in different positions. $ \ce{CH3CH(OH)CH3} $ (propan-2-ol) has the -OH group on a different carbon than propan-1-ol.

NEET Chemistry: Organic Chemistry Some Basic Principles and Techniques — Practice Set 13

Q1. Which reagent is used in Lassaigne’s test to detect halogens in an organic compound?

Q2. What is the hybridization of the carbon atom in \( \ce{HC#N} \)?

Q3. Which compound can exhibit position isomerism with \( \ce{CH3CH2CH2OH} \)?

Q4. What is the total number of \( \sigma \) and \( \pi \) bonds in \( \ce{CH3C#CH} \)?

Q5. Which compound with the formula \( \ce{C5H10} \) has the highest degree of unsaturation?

Q6. In the Dumas method, 0.5 g of a compound gave 112 mL of \( \ce{N2} \) at STP. What is the percentage of nitrogen?

Q7. Which carbon in \( \ce{CH3CH2C#CCH2CH3} \) has the smallest bond angle?

Q8. Which intermediate is stabilized by the hyperconjugation effect?

Q9. The reaction \( \ce{CH3CH2Br + OH^- -> CH3CH2OH + Br^-} \) is an example of which type of reaction?

Q10. Which compound can exhibit geometrical isomerism?