19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
CH CH Br on treatment with LiAlH4 gives ethane gas while (CH3)3C-Br on same treatment gives H2 gas because (OJEE 2009) (a) the former is SN2 and latter is E2 reaction
Which one of the following species will be most reactive in SN2 reaction? (AMU 2009) (a) (b) (c) (d)
Consider the following reactions, EtOH/H O (Major) C H Cl AgCN X -> Which one of the following statements is true for X? (EAMCET 2009) I. It gives propanoic acid on hydrolysis. II. It has an ester functional group. I…
The correct order of increasing reactivity of C – X bond towards nucleophile in the following compounds is (AIPMT 2010)
In the following reaction + 1. Mg, Ether 2. H O , C H CH Br X -> is (AIPMT 2010)
iso-propyl bromide on Wurtz reaction gives (RPMT 2010)
The reaction, Dryether RX 2Na RX R R 2NaX -> is called (Hayana PMT 2010)
KMnO /H aq.KOH CH CH Br A -> -> NH Br alkali B C D, -> -> D is (KCET 2010) (a) CH Br (b) CH CONH (c) CH NH (d) CHBr
Reaction of methyl bromide with aqueous sodium hydroxide involves (KCET 2010)
The reactivities of CH Cl,CH CH CH Cl and C H Cl are in the order (CMC 2010) (a) CH Cl CH CH Cl C H Cl (b) CH CH CH Cl CH Cl C H Cl (c) C H Cl CH CH CH Cl CH Cl (d) CH Cl C H Cl CH CH C…
Identify Z, in the following series. Br alc.KOH KCN C H I X Y Z -> -> -> (VMMC 2010) (a) CH CH CN (b) NCCH CH CN (c) BrCH CH CN
Which of the following species is an electrophile?
Which one is most reactive towards SN1 reaction? (AIPMT 2011)
Consider the reactions. (i) C H OH CH CH CH Br CH CH CH OC H HBr -> (ii) C H O CH CH CH Br CH CH CH OC H HBr -> The mechanisms of reactions (i) and (ii) are respectively …
Given reaction, ‘Y’ in the reaction is (DUMET 2011)
Which one of the following is not true for the hydrolysis of t-butyl bromide with aqueous NaOH? (KCET 2011)
Following is the substitution reaction in which –CN replaced –Cl (Alcoholic) R Cl KCN R CN KCl -> To obtain propanenitrile, R-Cl should be (KCET 2011)
Which of the following alkyl halides is hydrolysed by SN2 mechanism? (BVP 2011) (a) C H CH Br (b) CH Br (c) CH CHCH Br
KOH alcohol CH CH CH Br CH CH CH -> The above reaction is an example of …… reaction. (OJEE 2011)
In the replacement reaction The reaction will be most favourable if M happens to be (AIPMT 2012)
In the following sequence of reaction, H O LiAlH KCN CH Br A B C, -> -> -> C is (CBSE AIPMT 2012)
In alkaline hydrolysis of a tertiary halide by aqueous solution of alkali if concentration of alkali is doubled, then the reaction (AIIMS 2012)
When alkyl halide is heated with dry Ag2O, it produces (Manipal 2012)
An alkyl halide with molecular formula C6H13Br on dehydrohalogenation gave two isomeric alkenes X and Y with molecular formula C6H12. On reductive ozonolysis, X and Y gave four compound CH3COCH3, CH3CHO, CH3CH2CHO and…
I and II are (NEET 2013)