CBSE Class 12 Chemistry Worksheet - Haloarenes

Scroll down for PDF

CBSE Class 12 Chemistry Worksheet - Haloarenes. CBSE issues sample papers every year for students for class 12 board exams. Students should solve the CBSE issued sample papers to understand the pattern of the question paper which will come in class 12 board exams this year. The sample papers have been provided with marking scheme. It’s always recommended to practice as many CBSE sample papers as possible before the board examinations. Sample papers should be always practiced in examination condition at home or school and the student should show the answers to teachers for checking or compare with the answers provided. Students can download the sample papers in pdf format free and score better marks in examinations. Refer to other links too for latest sample papers.


1.Give IUPAC names of the following:- 

(a) Iso-butylchloride

(b) tert- butylchloride

(c) neo-pentylbromide

(d) ethylidene chloride

(e) Ethylene dichloride

(f) ethylene dichloride

(g) bromoform

(h) vinylchloride

(i) allyl bromide

(j) methylene chloride

(k) benzyl chloride

2.Give reasons for the following:-

(a) Flourine is more electronegative than chlorine still dipolemoment of C-F bond is less than that of CCl bond in methylflouride & methylchloride.

(b) For the conversion of alcohols to alkyl halides, thionyl chloride is preferred over phosphorous halide or halogen acid.

(c) Conversion of alcohols to alkyl iodide is done in absence of catalyst zinc chloride.

(d) Phenol cannot be converted to halobenzene by reaction with thionyl chloride or phosphorous halide or halogen acid.

(e) Free radical halogenation of alkanes is not a very good method for preparation of holoalkanes.

(f) Electrophilic substitution of benzene with iodine requires presence of oxidizing agents like HIO3.

(g) Electrophilic substitution of benzene with fluorine is not done for preparation of flourobenzene.

(h) Finkelstein reaction is carried out in dry acetone medium.

(i) Rate of reaction between t-butyl bromide & hydroxide ion depends only on concentration of hydroxide ions.

(j) Allylic & benzylic halides show high reactivity towards SN1 reaction.

(k) Dehydrohalogenation of 2-bromopentane gives 2-pentene as the major product.

(l) Optically active 2-bromobutane on treatment with aq KOH results in formation of optically inactive product.

(m) Aryl halides are extremely less reactive towards nucleophilic substitution reactions.

(n) Rate of electrophilic substitution reactions in haloarenes is less than that of benzene.

(o) Choloform is stored in dark bottles.

(p) P-Nitrochlorobenzene can be more easily hydrolysed with aq. NaOH thatn chlorobenzene.

(q) Reaction of (-) 2-Bromo octane with aq NaOH results in formation of (+)octane-2-ol.

Please click the link below to download full pdf file for CBSE Class 12 Chemistry Worksheet - Haloarenes.


Click on the text For more study material for Chemistry please click here - Chemistry

Latest NCERT & CBSE News

Read the latest news and announcements from NCERT and CBSE below. Important updates relating to your studies which will help you to keep yourself updated with latest happenings in school level education. Keep yourself updated with all latest news and also read articles from teachers which will help you to improve your studies, increase motivation level and promote faster learning

Tips for exam preparation

Students often get nervous during their exams. The reason behind this nervousness is either a lack of confidence or a lack of preparedness. To overcome these fears students are advised to do their preparation in such a way that will retain their confidence. For this...

TIPS: Study habits for success

Being a student is fairly a difficult job. Alongside maintaining your curricular as well as extra-curricular activities adds more to it. Performance in academics is one of the major concerns. Every parent now tries to get their children more indulged in studies. Need...

CBSE Board Introduces Experiential Learning for Student

CBSE Academic Session 2019-20: Board Introduces Experiential Learning for Student: The education sector has grown for some new changes. As per the latest updates the Central Board of Secondary Education has been good in making all the possible efforts to improve...

Requirements for admissions in CBSE affiliated Schools

CBSE gives an advanced form of education. They try to indulge students in interactions and teach application based subjects along with some others. Due to this preponderance of parents, they tend to admit their children in CBSE affiliated schools. General conditions...

Error in the evaluation of answer sheets in CBSE

The education board has witnessed many events where invigilators are being suspended for allotting wrong marks to the students.  This has affected students mainly of classes X and XII in the 2019 CBSE Board Exams. The central board of secondary education has taken...

Seven Motivational tips for every student

If you’re are a student or a learner and you doesn’t feel like study then this article is going to be very important for you, Reading constantly and Staying motivated as a student is one of the most challenging tasks and barriers to educational success. Education is...

Studies Today