1. Benzene is an
(a) Aliphatic compound (b) Aromatic compound
(c) Heterocyclic compound (d) None of the above
Ans:-(b)
2. The molecular formula for benzene is-
(a) C6H5 (b) C6H4
(c) C6H6 (d) C6H7
Ans:-(c)
3. Which of the following statement is true-
(a) Benzene resists oxidation (b) Benzene easily oxidised by oxisiding agent (c) Benzene behaves like a saturated compound (d) Both (a) and (c)
Ans:-(d)
4. Benzene undergoes
(a) Substitution reaction (b) Addition reaction
(c) Elimination reaction (d) None of the above
Ans:-(a)
5. Find the correct statement
(a) Benzene has six C-C sigma bonds and not six C-H sigma bonds (b) Benzene has six C-H sigma bonds but not six C-C sigma bonds (c) Benzene has six C-C sigma bonds and six C-H sigma bonds (d) Benzene has neither six C-C sigma bonds nor the six C-H sigma bonds
Ans:-(c)
6. Benzene act as
(a) Nucleophilic (b) Electrophilic
(c) Both (a) and (b) (d) None
Ans:-(a)
7. Benzene undergoes
(a) Nucleophilic substitution reaction (b) Electrophilic substitution reaction (c) Nucleophilic addition reaction (d) Electrophilic addition reaction
Ans:-(b)
8. Sulphonation of benzene is carried out in the presence of-
(a) Conc. Sulphuric acid (b) Fuming sulphuric acid
(c) Both (a) and (b) (d) Conc. Hydrochloric acid
Ans:-(c)
9. Nitration of benzene is carried out in the presence of-
(a) Conc. Sulphuric acid (b) Conc. Nitric acid (c) Mixure of conc. H2SO4 and conc. HNO3 (d) Conc. HCL
Ans:-(c)
10. An aromatic molecule will-
(a) Have 4n pi electrons (b) Have (4n+2) pi electrons
(c) Be planer (d) Be cyclic
Ans:-(b)
11. Which catalyst is used during halogination of benzene-
(a) Lewis acid (b) Lewis base
(c) Platinum (d) Ni/pt
Ans:-(a)
12. Arenes are
(a) Vloatile (b) Water soluble
(c) Non-carcinogenic (d) Mostly gases
Ans:-(a)
13. Arenes does not undergo-
(a) Dehydrogenation (b) Coupling reaction
(c) Halogenation (d) Cycloaddition
Ans:-(a)
14. Friedal crafts acylation is useful for preparation of -
(a) Aromatic aldehydes (b) Aliphatic aldehydes
(c) Aromatic ketones (d) Aliphatic ketones
Ans:-(c)
15. Pi-bonds in benzene spread over all six carbons, hence they are called-
(a) Spectators (b) Delocalized
(c) Invaders (d) Inhibitors
Ans:-(b)
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