1.
In the reaction with HCl, an alkene reacts in accordance with Markownikoff’s rule to give a product 1-chloro-1-methylcyclohexane. The possible alkene is:
2.
The enthalpy of hydrogenation of these compounds will be in the order as:
3.
Which of the following compounds will not undergo Friedel-Craft’s reaction easily?
4.
Some meta-directing substituents in aromatic substitution are given. Which one is most deactivating?
5.
The reaction of toluene with Cl₂ in the presence of FeCl₃ gives ‘X’ and reaction in presence of light gives ‘Y’. Thus, ‘X’ and ‘Y’ are:
6.
Nitrobenzene can be prepared from benzene by using a mixture of conc. HNO₃ and conc. H₂SO₄. In the mixture, nitric acid acts as a/an:
7.
Benzene reacts with CHCl₃ in the presence of anhydrous AlCl₃ to form:
8.
Using anhydrous AlCl₃ as catalyst, which reaction produces ethylbenzene (PhEt)?
9.
In Friedel–Craft’s synthesis of toluene, the reactants in addition to anhydrous AlCl₃ are:
10.
Which one of these is not compatible with arenes?
11.
Which is the correct symbol relating the hetero Kekulé structure of benzene?
12.
Benzene reacts with n-propyl chloride in the presence of anhydrous AlCl₃ to give:
13.
Identify the missing reagent: CH₃CH₂COONa + NaOH → CH₄ + Na₂CO₃ (with heat)
14.
Elimination reaction of 2-bromopentane to form pent-2-ene is:
15.
Reactions: (i) CH₃CH₂CHBrCH₃ + KOH → CH₃CH=CHCH₃ + KBr + H₂O, (ii) R-OH + HBr → R-Br + H₂O, (iii) Br₂ + CH=CH₂ → BrCH₂CH₂Br
16.
Which undergoes nucleophilic substitution exclusively by SN1 mechanism?
17.
2-bromopentane is heated with potassium ethoxide in ethanol. Major product?
18.
Alkyl halide to alcohol conversion involves?
19.
Chlorine passed through propene at 400°C forms?
20.
Industrial preparation of chloroform uses acetone and?
21.
Propene + HCl in presence of benzoyl peroxide gives?
22.
Chlorobenzene + Mg (dry ether) → A; A + ethanol gives?
23.
HBr reacts fastest with?
24.
In compound ‘X’ all bond angles = 109.5°, 'X' is?
25.
Chloropicrin is obtained by reaction of?
26.
Ozone layer depletion caused by?
27.
CH₃CH₂CHCl₂ + NaNH₂ (heat), product?
28.
CH₃CH₂CHCl + NaCN → X → Ni/H₂ → Y → Acetic anhydride → Z. Z is?
29.
Reactivity order in dehydrohalogenation?
30.
Compound A (C₄H₉Cl) reacts with Na/ether → hydrocarbon → monochlorination gives only one product. A is? [2001]
31.
Cl–C–Cl angle in 1,1,2,2-tetrachloroethene and CCl₄?
32.
Phosgene is a common name for?
33.
Product of HBr addition to an alkene in peroxide presence?
34.
Which does not undergo SN1 reaction with OH⁻?
35.
CH₃CCl₃ + Br₂/Fe → Zn/HCl → Product?
36.
Halide usable in Friedel-Crafts reaction?
37.
Which compound forms the most stable carbocation on C–Cl ionization?
38.
CH₂=CH–CH₃ + HBr gives?
39.
Product of toluene with Br₂/FeBr₃?
40.
Trichloroacetaldehyde (CCl₃CHO) reacts with chlorobenzene in H₂SO₄ to form?
41.
In the above reaction, the product 'P' is?
42.
Why is Cl in 2,4-dinitrochlorobenzene replaced more easily than in chlorobenzene?
43.
Major product in dehydrohalogenation of 2-bromopentane?
44.
Which substituted phenol is the strongest acid?
45.
CH₃CH=CH₂ + BH₃·THF → H₂O₂/NaOH → Z. What is Z?
