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A (Predominantly) is (CBSE AIPMT 2008) (a) (b) (c) (d)
Base strength of iii ii i H CCH , H C CHand H C C is in the order of (AIPMT 2008)
Assertion: Friedel-Craft’s reaction is used to introduce an alkyl or acyl group in the benzene nucleus. Reason: Benzene is a solvent for Friedel-Craft’s alkylation of bromobenzene.
Which is not aromatic compound? _
Among the following, the aromatic comopound is: (a) (b) (c) (d)
Reduction of 2-butyne with sodium in liquid ammonia gives predominantly :
The product A, is (a) (b) (c) (d)
Acetylenic hydrogens are acidic because
CH CH CH
CH CH C CH
CH CH CH CH
The pair of electrons in the given carbanion, CH3C≡C–, is present in which of the following orbitals? (NEET-I 2016)
CH C C CH
Which is the most suitable reagent among the following to distinguish compound (3) from rest of the
In the reaction with HCl, an alkene reacts in accordance with the Markovnikov’s rule to give a product 1-chloro- 1-methyl-cyclohexane. The possible alkene is (NEET 2015) (a) (b)
A hydrocarbon A on chlorination gives B which on heating with alcoholic potassium hydroxide changes into another hydrocarbon C. The latter decolourises Baeyer's reagent and on ozonolysis forms formaldehyde only. A is
In the presence of platinum catalyst, hydrocarbon A adds hydrogen to form n-hexane. When hydrogen bromide is added to A instead of hydrogen, only a single bromo compound Is formed. Which of the following is A? (a) CH …
When 3, 3-dimethyl 2-butanol is heated with H2SO4, the major product obtained is
When hydrochloric acid gas is treated with propene in presence of benzoyl peroxide, it gives.
The reagent is Reagent R CH CCl R R C C R ->
Consider the following statements : A hydrocarbon of molecular formula C5H10 is a I. monosubstituted alkene II. disubstituted alkene III. trisubstituted alkene Which of the following statement(s) is(are) correct?
Which one of the following reactions is expected to readily give a hydrocarbon product in good yields? (a) Electrolytic RCOOK oxidation -> (b) Br2 RCOO Ag -> (c) Br2 RCOO Ag ->
Hydrocarbon (A) reacts with bromine by substitution to form an alkyl bromide which by Wurtz reaction is converted to gaseous hydrocarbon containing less than four carbon atoms. (A) is (NEET 2018)
Predict the correct intermediate and product in the following reaction: (NEET 2017) (a) (b) (c) (d)
Which of the following compounds shall not produce propene by reaction with HBr followed by elimination or direct only elimination reaction? (NEET-II 2016) (a)