NEET Chemistry: Organic Chemistry Some Basic Principles and Techniques — Practice Set 14
Q1. Which type of intermediate is formed during the homolytic cleavage of \( \ce{Cl-Cl} \)?
A. Carbocation
B. Free radical
C. Carbanion
D. Carbene
Q2. What is the total number of sigma bonds in \( \ce{CH2=CHCH2CH3} \)?
A. 11
B. 10
C. 12
D. 9
Q3. What is the total number of sigma bonds in \( \ce{CH3CH2C#CH} \)?
A. 9
B. 8
C. 10
D. 7
Q4. In the estimation of nitrogen by Dumas method, 0.4 g of a compound produces 84 mL of \( \ce{N2} \) at STP, and in Carius method, 0.4 g gives 0.382 g of \( \ce{AgCl} \). What is the percentage of nitrogen?
A. 25%
B. 26%
C. 26.25%
D. 27%
Q5. In the estimation of carbon and hydrogen, 0.15 g of a compound gave 0.135 g of \( \ce{H2O} \). What is the percentage of hydrogen?
A. 8%
B. 9%
C. 11%
D. 10%
Q6. What is the shape of the carbon atom in \( \ce{CH3CH2CH2CHO} \) attached to the carbonyl group?
A. Tetrahedral
B. Linear
C. Trigonal planar
D. Bent
Q7. Which of the following carbocations is most stable due to hyperconjugation?
A. \( \ce{CH3+} \)
B. \( \ce{CH3CH2+} \)
C. \( \ce{(CH3)2CH+} \)
D. \( \ce{CH3CH2CH2+} \)
Q8. Which technique would be least effective for purifying a mixture of two solids, one of which sublimes at 50°C and the other decomposes at 200°C?
A. Crystallization
B. Sublimation
C. Differential extraction
D. Chromatography
Q9. Which of the following is a nucleophile?
A. \( \ce{BCl3} \)
B. \( \ce{CH3CH2+} \)
C. \( \ce{NO2+} \)
D. \( \ce{CH3NH2} \)
Q10. A mixture of two solids, one subliming at 60°C and the other melting at 120°C, is best separated by which technique?
A. Crystallization
B. Differential extraction
C. Sublimation
D. Chromatography
Chemistry — Organic Chemistry Some Basic Principles and Techniques
Set 14 of 20
15:00
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