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Class 11 Chemistry
Organic Chemistry: Some Basic Principles And Techniques
Quiz 1
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If two compounds have the same empirical formula but different molecular formula they must have
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Different percentage composition
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Different molecular weight
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Same viscosity
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Same vapour density
Explanation
Different molecular weight
Identify the chiral molecule among the following:
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Isopropyl alcohol
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2-pentanol
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1-bromo 3-butene
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Isobutyl alcohol
Explanation
Isobutyl alcohol
The displacement of electrons in a multiple bond in the presence of attacking reagent is called
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Inductive effect
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Electromeric effect
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Resonance
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Hyper conjugation.
Explanation
Electromeric effect
Which of the following cannot be represented by resonance structures?
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Dimethyl ether
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Nitrate anion
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Carboxylate anion
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Toluene
Explanation
Dimethyl ether
An organic compound which produces a bluish green coloured flame on heating in presence of copper is
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Chlorobenzene
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Benzaldehyde
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Aniline
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Benzoic acid
Explanation
Benzoic acid
Insulin contains4% sulphur. The minimum molecular weight of insulin is
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350
0%
470
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560
0%
940
Explanation
940
What is the correct IUPAC name of
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4-methoxy-2-nitrobenzaldehyde
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4-formyl-3-nitro anisole
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4-methoxy-6-nitrobenzaldehyde
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2-formyl-5-methoxy nitrobenzene
Explanation
4-methoxy-2-nitrobenzaldehyde
59 g of an amide obtained from a carboxylic acid, RCOOH, liberated 17 g of ammonia upon heating with alkali. The acid is
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Formic Acid
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Acetic Acid
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Propionic Acid
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Benzoic Acid
Explanation
Acetic Acid
In the Dumas method, the nitrogen present in organic compound gets converted to
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Sodium Cyanide
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Gaseoue Ammonia
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Dinitrogen Gas
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Ammonium Sulphate.
Explanation
Dinitrogen Gas
The compound
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Bicyclo-[2, 2, 2] octane
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Bicyclo-[2, 2, 1] octane
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Bicyclo-[1, 2, 1] octane
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Bicyclo-[1, 1, 1] octane
Explanation
Bicyclo-[2, 2, 2] octane
Which one of the following conformations of cyclohexane is chiral?
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Twist boat
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Rigid
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Chair
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Boat
Explanation
Twist boat
If228 g of silver salt of dibasic acid gave a residue of162 g of silver on ignition then molecular weight of the acid is
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70
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80
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90
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100
Explanation
90
If there is no rotation of plane polarized light by a compound in a specific solvent, thought to be chiral, it may mean that
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The compound may be a racemic mixture
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The compound is certainly a chiral
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The compound is certainly meso
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There is no compound in the solvent.
Explanation
The compound is certainly meso
Which element is estimated by Carius method
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Carbon
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Hydrogen
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Halogen
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Nitrogen
Explanation
Halogen
Inductive effect involves
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displacement of σ electrons
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delocalization of π electrons
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delocalization of σ-electrons
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displacement of π-electrons
Explanation
displacement of σ electrons
A crystalline solid possess which one of the following property?
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Irregularity
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Non- symmetric
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Perfect geometric pattern
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non- stability
Explanation
Perfect geometric pattern
Which of the following behaves both as a nucleophile and as an electrophile?
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CH C ≡ N
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CH OH
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CH = CHCH
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CH NH
Explanation
CH C ≡ N
0 h : 0 m : 1 s
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