benzene treated with hcl gives

(b) OH– will attach the substrate (iii) from one side and Cl– will leave it simultaneously from other side. halogen atom activates the aryl halides towards nucleophilic substitution reaction. Instead, it gets deposited in fatty tissues. NCERT NCERT Exemplar NCERT Fingertips Errorless Vol-1 Errorless Vol-2. Triodomethane is used as an antiseptic But some compounds of this class are responding for exposure of flora and fauna to more and more of UV light which causes destruction to great extent. Explain why? (i) Write down the structural formula of both compounds ‘A’ and ‘B’. Benzene forms an alkyl banzene in friedel craft alkylation reaction.When benzene is treated with alkyl halide in the presence of alnhydrous aluminium chloride, alkyl benzene is given as the product. It is a colourless compound. Solution: (i —> b), (ii —> d), (iii —> a), (iv -» c) The aluminium chloride and HCl aren't written into these equations because they are acting as catalysts. Solution: Question 58. Question 5. with inverted configuration. Butane has no halogen atom and rest of all three compounds are halo derivatives of butane. Filed Under: CBSE Tagged With: CBSE Class 12 Chemistry, CBSE Class 12 Chemistry Haloalkanes and Haloarenes ., CBSE Exemplar Problems Class 12 Chemistry Haloalkanes and Haloarenes, RD Sharma Class 11 Solutions Free PDF Download, NCERT Solutions for Class 12 Computer Science (Python), NCERT Solutions for Class 12 Computer Science (C++), NCERT Solutions for Class 12 Business Studies, NCERT Solutions for Class 12 Micro Economics, NCERT Solutions for Class 12 Macro Economics, NCERT Solutions for Class 12 Entrepreneurship, NCERT Solutions for Class 12 Political Science, NCERT Solutions for Class 11 Computer Science (Python), NCERT Solutions for Class 11 Business Studies, NCERT Solutions for Class 11 Entrepreneurship, NCERT Solutions for Class 11 Political Science, NCERT Solutions for Class 11 Indian Economic Development, NCERT Solutions for Class 10 Social Science, NCERT Solutions For Class 10 Hindi Sanchayan, NCERT Solutions For Class 10 Hindi Sparsh, NCERT Solutions For Class 10 Hindi Kshitiz, NCERT Solutions For Class 10 Hindi Kritika, NCERT Solutions for Class 10 Foundation of Information Technology, NCERT Solutions for Class 9 Social Science, NCERT Solutions for Class 9 Foundation of IT, PS Verma and VK Agarwal Biology Class 9 Solutions. Solution: (a) Halogen exchange reaction are those reactions in which one halide replaces another. Write down the structure and IUPAC name for neo-pentylbromide. Which of the products will be major product in the reaction given Because the positive charge is on the centre carbon atom, that is the one which will become attached to the ring. (a) Intermediate (iii) is unstable because in this carbon is attached to 5 atoms. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. To carry out the reaction in forward direction, HI formed during the reaction is removed by oxidation. NCERT P Bahadur IIT-JEE Previous Year Narendra Awasthi MS Chauhan. In your opinion, what should be done to minimize harmful effects of these compounds. Their use is banned in India andother countries because they are highly toxic and are not biodegradable. (d) Both the compounds are optically active Why is their use banned in India and other countries? (iii) 2-Bromo-2-methylpropane (iv) 2-Chlorobutane Solution: (c) Chloromethane on treatment with excess of ammonia yields mainly methanamine. This browser does not support the video element. Solution: Question 73. Solution: (d) R—Cl + KCN –> R-CN + KCL C6H6 + 6Cl2 (in sunlight) → C6Cl6 + 6HCl. (ii) Allyl halides are the compounds in which the halogen atom is bonded to sp3 hybridised carbon atom next to carbon-carbon double bond, i.e., CH2 = CH – CH2 – X Which of the following statements are correct about this reaction? For example, the propyl group becomes attached to the ring via its middle carbon atom - and not its end one. Solution: (i -» c), (ii —»d), (iii —» a), (iv -» b) • When carbon tetrachloride is released into the air, it rises to the atmosphere and depletes the ozone layer. Solution: Ethanol is converted to chloroethane and Cl can be replaced by I. What are the IUPAC name of the insecticide DDT and benzenehexachloride? (a) The given reaction follows SN2 mechanism. Arrange the following compounds in the increasing order of their densities Cl In both of these compounds halogen atoms are attached to sp3 hybridised carbon atom of alkyl group. Give the structure of the hydrocarbon. The reaction is • Which of the following compounds would undergo SN1 reaction faster and why? Compound X upon reaction with Br 2 / Na 2 CO 3, followed by heating at 473 K with moist KOH furnishes Y as the major product. The sp2 hybridised carbon is more electronegative than sp3 hybridised carbon. Question 7. C – X bond in haloarenes is extremely less reactive towards nucleophilic We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739.

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