Students should refer to Worksheets Class 11 Chemistry Organic Chemistry – Some Basic Principles and Techniques Chapter 12 provided below with important questions and answers. These important questions with solutions for Chapter 12 Organic Chemistry – Some Basic Principles and Techniques have been prepared by expert teachers for Class 11 Chemistry based on the expected pattern of questions in the class 11 exams. We have provided Worksheets for Class 11 Chemistry for all chapters on our website. You should carefully learn all the important examinations questions provided below as they will help you to get better marks in your class tests and exams.
Organic Chemistry – Some Basic Principles and Techniques Worksheets Class 11 Chemistry
Question. If two compounds have the same empirical formula but different molecular formula they must have
(a) Different percentage composition
(b) Different molecular weight
(c) Same viscosity
(d) Same vapour density
Answer
B
Question. Which among the following statement is not true?
(a) In liquid, particles are less regularly arranged and are free to move
(b) Boiling involves breaking up of group of molecules in liquid
(c) Boiling involves separation of oppositely charged ions
(d) Thermal energy of particles overcome cohesive forces that hold them
Answer
C
Question. 59 g of an amide obtained from a carboxylic acid, RCOOH, liberated 17 g of ammonia upon heating with alkali. The acid is
(a) Formic Acid
(b) Acetic Acid
(c) Propionic Acid
(d) Benzoic Acid
Answer
B
Question. Which among the following is formed when an alcohol is dehydrated?
(a) alkane
(b) alkyne
(c) alkene
(d) aldehyde
Answer
C
Question. 0.5 g of hydrocarbon gave 0.9 g water on combustion. The percentage of carbon in hydrocarbon is
(a) 75.8
(b) 80.0
(c) 56.6
(d) 28.6
Answer
B
Question. Inductive effect involves
(a) displacement of σ electrons
(b) delocalization of π electrons
(c) delocalization of σ-electrons
(d) displacement of π-electrons
Answer
A
Question. What is the state of hybridisation of carbon in carbanion?
(a) sp
(b) sp²
(c) sp³
(d) sp²d.
Answer
C
Question. Which of the following physical properties differ for each of a pair of enantiomers?
(a) solubility in ethanol
(b) direction of rotation of plane-polarized light
(c) boiling point and melting point
(d) index of refraction
Answer
B
Question. A solution of(+) – 2 – chloro – 2 – phenylethane in toluene racemises slowly in the presence of small amounts of SbCl5 due to the formation of
(a) Carbanion
(b) Carbene
(c) Free radical
(d) Carbocation
Answer
D
Question. A gas mixture contains 50% helium and 50% methane by volume. What is the percent by weight of methane in the mixture
(a) 75%
(b) 50%
(c) 80.03%
(d) 19.97%
Answer
C
