Q1Multiple choice
Which of the following is the correct IUPAC name?
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Correct option: A
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Worked solution
Option (i) the answer.
NCERT Exemplar · Class 11 · Chemistry
Chapter 12: Organic Chemistry: Some Basic Principles and Techniques
Practice each question, then open the answer or worked solution.
Questions
15 questionsQ2Written answer
The IUPAC name is ________ for
(i) 1-hydroxypentane-1,4-dione
(ii) 1,4-dioxopentanol
(iii) 1-carboxybutan-3-one
(iv) 4-oxopentanoic acid
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Worked solution
Option (iv) is the answer.
Q3Written answer
The IUPAC name for
(i) 1-Chloro-2-nitro-4-methylbenzene
(ii) 1-Chloro-4-methyl-2-nitrobenzene
(iii) 2-Chloro-1-nitro-5-methylbenzene
(iv) m-Nitro-p-chlorotoluene
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Worked solution
Option (ii) is the answer.
Q4Multiple choice
Electronegativity of carbon atoms depends upon their state of hybridisation.
In which of the following compounds, the carbon marked with an asterisk is
most electronegative?
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Correct option: C
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Worked solution
Option (iii) is the answer.
Q5Multiple choice
In which of the following, functional group isomerism is not possible?
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Correct option: C
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Worked solution
Option (iii) is the answer.
Q6Written answer
The fragrance of flowers is due to the presence of some steam volatile organic
compounds called essential oils. These are generally insoluble in water at
room temperature but are miscible with water vapour in the vapour phase. A
a suitable method for the extraction of these oils from the flowers is:
(i) Distillation
(ii) Crystallisation
(iii) Distillation under reduced pressure
(iv) Steam distillation
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Worked solution
Option (iv) is the answer.
Q7Written answer
During the hearing of a court case, the judge suspected that some changes in the
documents had been carried out. He asked the forensic department to check
the ink used at two different places. According to you, which technique can
give the best results?
(i) Column chromatography
(ii) Solvent extraction
(iii) Distillation
(iv) Thin-layer chromatography
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Worked solution
Option (iv) is the answer.
Q8Written answer
The principle involved in paper chromatography is
(i) Adsorption
(ii) Partition
(iii) Solubility
(iv) Volatility
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Worked solution
Option (ii) is the answer.
Q9Multiple choice
What is the correct order of decreasing stability of the following cations?
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Correct option: A
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Worked solution
Option (i) is the answer.
Q10Multiple choice
Correct IUPAC name for is ___________.
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Correct option: B
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Worked solution
Option (ii) is the answer.