Identify the following named reaction: C₂H₅Br → C₂H₅ - C₂H₅
Wurtz reaction correct as per chemistry principle.
Ref: NCERT Chemistry Class XII — Organic Chemistry
#alkyl halide
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For the given organic reaction: C₃H₇Cl + H₂ → C₃H₈ + HCl 'A' is
Cu correct as per chemistry principle.
Ref: NCERT Chemistry Class XII — Organic Chemistry
An alkyl halide X reacts with NH₃ to give CH₃CH₂CH₂NH₂. X is:
1-Chloropropane (CH₃CH₂CH₂Cl) undergoes ammonolysis with NH₃ to form propan-1-amine (CH₃CH₂CH₂NH₂), as per the PDF’s preparation methods.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Reaction with Nitrous Acid and Diazonium Salts - Part 2
An alkyl halide X with NH₃ gives CH₃CH₂CH₂CH₂NH₂. X is:
1-Chlorobutane (CH₃CH₂CH₂CH₂Cl) reacts with NH₃ via ammonolysis to form butan-1-amine (CH₃CH₂CH₂CH₂NH₂), as per the PDF.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Reaction with Nitrous Acid and Diazonium Salts - Part 2
What is the product when CH₃CH₂CHClCH₃ reacts with Mg in dry ether, followed by H₂O ?
CH₃CH₂CHClCH₃ forms a Grignard reagent with Mg , which hydrolyzes with H₂O to CH₃CH₂CH₂CH₃ (butane).
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Polyhalogen Compounds - Chloroform Iodoform DDT Freons
Which of the following is a secondary halide?
A secondary halide has the halogen on a carbon bonded to two other carbons. CH₃CH₂CHBrCH₃ (3-bromobutane) is secondary.
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Polyhalogen Compounds - Chloroform Iodoform DDT Freons
What is the product when CH₃CH₂CH₂Br reacts with NH₃ (excess)?
Excess NH₃ reacts with CH₃CH₂CH₂Br via nucleophilic substitution to form the primary amine CH₃CH₂CH₂NH₂ (propylamine).
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Nucleophilic Substitution Reactions - SN1 and SN2 Mechanisms
What is the IUPAC name of CH₃CH₂CH(Br)CH₂CH₃ ?
The compound has a five-carbon chain (pentane) with bromine on the third carbon. The name is 3-bromopentane.
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Nucleophilic Substitution Reactions - SN1 and SN2 Mechanisms
What is the IUPAC name of CH₃CH(Cl)CH₂CH₃ ?
The compound has a four-carbon chain with chlorine on the second carbon. The parent chain is butane, so the name is 2-chlorobutane.
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Nucleophilic Substitution Reactions - SN1 and SN2 Mechanisms
Which halide reacts fastest with NaOH in aqueous medium?
SN₂ substitution with NaOH favors primary halides. CH₃CH₂I (iodide) reacts fastest due to the best leaving group.
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Nature of C-X Bond and Methods of Preparation
What is the product when CH₃CH₂CH₂I reacts with NaOCH₃ in methanol?
NaOCH₃ substitutes I in CH₃CH₂CH₂I via SN₂ , forming CH₃CH₂CH₂OCH₃ (methyl propyl ether).
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Nature of C-X Bond and Methods of Preparation
Which halide reacts with Na in ether to form a six-carbon alkane with a branched structure?
Wurtz reaction of (CH₃)2CHCH₂Cl (1-chloro-2-methylpropane) forms (CH₃)2CHCH₂CH₂CH(CH₃)2 (2,5-dimethylhexane), a branched six-carbon alkane.
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Elimination Reactions and Reaction with Metals and Other Reactions
