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Mere Teacher · Previous Year Questions
JEE Main Chemistry · Hydrocarbons · Set 13 (Q361-390)
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361.
Identify A and B in the given chemical reaction sequence :
(1)
(2)
(3)
(4)
362.
What are X,Y in the following reaction sequence?
CH3(CH2)5CH3XC7H8Br2ΔY
(1)X=Cr2O3,773K,10−20atm
(2)X=V2O5,773K,10−20atm
(3)X=KMnO4
(4)X= Anhydrous AlCl3
363.
The major aromatic product C in the following reaction sequence will be
(1)
(2)
(3)
(4)
364.
Amongst the compounds given, the one that would form a brilliant colored dye on treatment with NaNO2 in dilute HCl followed by addition to an alkaline solution of β-naphthol is
(1)
(2)
(3)
(4)
365.
Major product of the following reaction is
(1)
(2)
(3)
(4)None of these
366.
An unsaturated hydrocarbon x absorbs two hydrogen molecules on catalytic hydrogenation, and also gives following reaction XZn/H2OO3A⟶[Ag(NH3)2]+B(3-oxo-hexanedicarboxylic acid) X will be :
(1)
(2)
(3)
(4)
367.
Oxidation of cyclohexene in presence of acidic potassium permaganate leads to
(1)glutaric acid
(2)adipic acid
(3)pimelic acid
(4)succinic acid
368.
For the given reaction: Br2UVlight ‘A’ (major product) What is ‘A’ ?
(1)
(2)
(3)
(4)
369.
Identify ' Q ' in the following sequence of reactions :
(1)
(2)
(3)
(4)
370.
The major product obtained on the monobromination (with Br2 / FeBr3) of the following compound A is :
(1)
(2)
(3)
(4)
371.
Which compound would give 3-methyl-6- oxoheptanal upon ozonolysis?
(1)
(2)
(3)
(4)
372.
How many π electrons are present in naphthalene to decide its aromaticity?
(1)6
(2)7
(3)8
(4)10
373.
Which of the following compounds shall not produce propene by reaction with HBr followed by elimination or direct only elimination reaction?
(1)
(2)H3C−C−CH2OH
(3)H2C=C=O
(4)H3C−CH2−CH2Br
374.
Major product ‘B’ of the following reaction sequence is:
(1)CH3−C(HO)(CH3)−CH(Br)−CH3
(2)CH3−C(I)(CH3)−CH(Br)−CH3
(3)CH3−C(Br)(CH3)−CH(OH)−CH3
(4)CH3−C(Br)(CH3)−CH(I)−CH3
375.
Which among the following halides will generate the most stable carbocation in the nucleophilic substitution reaction?
(1)
(2)
(3)
(4)
376.
Which one of the following is a free‐radical substitution reaction?
(1)
(2)
(3)
(4)CH3CHO+HCN⇒CH3CH(OH)CN
377.
On heating an aliphatic primary amine with chloroform and ethanolic potassium hydroxide, the organic compound formed is :
(1)an alkanol
(2)an alkanediol
(3)an alkyl cyanide
(4)an alkyl isocyanide
378.
A compound 'A' on reaction with 'X' and 'Y' produces the same major product but different by product 'a' and 'b'. Oxidation of 'a' gives a substance produced by ants.
'X' and 'Y' respectively are :
(1)KMnO4/H+ and dil. KMnO4, 273 K
(2)KMnO4,(dilute), 273 K and KMn4/H+
(3)KMnO4/H+ and O3, H2O/Zn
(4)O3, H2O/Zn and KMnO4/H+
379.
In the following sequence of reactions, C3H6H+/H2OAKIOdil KOHB+C The compounds B and C respectively are :
(1)Cl3COOK,HCOOH
(2)CI3COOK,CH3I
(3)CH3I, HCOOK
(4)CHI3,CH3COOK
380.
Which of the following is the most correct electron displacement for a nuclephilic reaction to take place ?
(1)
(2)
(3)
(4)
381.
For above chemical reactions, identify the correct statement from the following:
(1)Both compound 'A' and compound 'B' are dicarboxylic acids
(2)Both compound 'A' and compound 'B' are diols
(3)Compound 'A' is diol and compound 'B' is dicarboxylic acid
(4)Compound 'A' is dicarboxylic acid and compound 'B' is diol
382.
Benzene reacts with CH3Cl in the presence of anhydrous AlCl3 to form :
(1)Toluene
(2)Chlorobenzene
(3)Benzylchloride
(4)Xylene
383.
The product (Z) of the following reaction is
(1)
(2)
(3)
(4)
384.
The major product of the following reaction is:
(1)2-Phenylhepta-2,5-diene
(2)6-Phenylhepta-2,4-diene
(3)6-Phenylhepta-3,5-diene
(4)2-Phenylhepta-2,4-diene
385.
Ethane on heating with a regulated supply of air at high pressure in presence of manganese acetate forms ' Q ', ' Q ' is
(1)CH3CH2OH
(2)CH3CHO
(3)HCOOH
(4)CH3COOH
386.
When CH3CH2CHC12 is treated with NaNH2, the product formed is
(1)CH3−CH=CH2
(2)CH3−C≡CH
(3)CH3CH2CH(NH2)(NH2)
(4)CH3CH2CH(Cl)(NH2)
387.
Find out the major products from the following reactions.
(1)
(2)
(3)
(4)
388.
The products formed in the following reaction is
(1)(CH3)2CH−CH2−CH2−CH(CH3)2
(2)(CH3)2CH−CH2−C(CH3)2−CH3
(3)CH3−CH(CH3)−CH(CH3)−CH(CH3)2
(4)CH3−C(CH3)2−C(CH3)2−CH3
389.
In the following reaction ' C ' is an aromatic compound having substituents D&E. What are D&E?
(1)−OH,−SO3H
(2)−CHO,−NO2
(3)−COOH,−NO2
(4)−SO3H,−NO2
390.
In the presence of sunlight, benzene reacts with C12 to give product, X. The number of hydrogens in X is_________.