Chemistry Question Bank

An alkene A on reaction with O3 and Zn–H2O gives propanone and ethanal in equimolar ratio. Addition of HCl to alkene A gives B as the major product. The structure of product B is (NEET 2020) (a) (b) (c) (d)

An alkene on ozonlysis gives methanal as one of the product. Its structure is (NEET 2020) (a) (b) (c) (d)

Which of the following alkane cannot be made in good yield by Wurtz reaction? (NEET 2020)

Among the following the reaction that proceeds through an electrophilic substitution is (NEET 2019) (a) (b) (c) (d)

In the following reaction, red hot iron tube 873K H C C CH A -> The number of sigma () bonds present in the product A, is (NEET 2019)

The most suitable reagent for the following conversion, is (NEET 2019) (a) Hg / H ,H O

The alkane that gives only one monochloro product on chlorination with Cl2 in presence of diffused sunlight is (NEET 2019)

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 one is the correct order of acidity? (NEET 2017)

With respect to the conformers of ethane, which of the following statements is true? (NEET 2017)

The compound that will react most readily with gaseous bromine has the formula (NEET 2017) (a) C H (b) C H (c) C H (d) C H

In which of the following molecules, all atoms are coplanar? (NEET-II 2016) (a) (b) (c) (d)

Which of the following can be used as the halide component for Friedel–Crafts reaction? (NEET-II 2016)

In the reaction i NaNH /liq.NH ii CH CH Br H C CH X -> i NaNH /liq.NH ii CH CH Br Y -> X and Y are (NEET-I 2016)

The pair of electrons in the given carbanion, CH3C≡C–, is present in which of the following orbitals? (NEET-I 2016)

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)

The correct statement regarding the comparison of staggered and eclipsed conformations of ethane, is (NEET-I 2016)

Consider the nitration of benzene using mixed conc. H SO and HNO . If a large amount of KHSO4is added to the mixture, the rate of nitration will be (NEET 2016)

Which of the following is not the product of dehydration of (NEET 2015) (a) (b) (c) (d)

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)

What products are formed when meta - xylene is treated with Br2 in the presence of FeBr3? (NEET 2014) (a) (b) (c) (d)

Which of the following organic compounds has same hybridization as its combustion product (CO2)? (NEET 2014)

Which of the following chemical system is non aromatic? (NEET 2013) (a) (b) (c) (d)

Which of the following compounds will not undergo Friedel-Crafts reaction easily? (NEET 2013)