$1$(a) (i) (I) Which of the following is more reactive towards $\displaystyle \mathrm{S}_{\mathrm{N}} 1$ reaction : 2-Bromo-2-methylbutane or 1-Bromopentane (II) What type of halide is present in the following compound : 2026_CBSE_Chemistry_Set_Region5_Subset_Set1_Q33__II_p11_38

2026_CBSE_Chemistry_Set_Region5_Subset_Set1_Q33__II_p11_38

(III) Why is chloroform stored in dark coloured bottles ? (ii) Define the following terms : (I) Ambident Nucleophiles (II) Racemic mixture

OR

(b) (i) Answer the following : (I) Which isomer of $\displaystyle \mathrm{C}_{4} \mathrm{H}_{9} \mathrm{Br}$ is most reactive towards $\displaystyle \mathrm{S}_{\mathrm{N}} 1$ reaction? (II) Predict the alkene that would be formed by dehydrohalogenation of 1-Bromo-1-methylcyclohexane. (III) Although chlorine shows strong - I effect, yet it is ortho/para-directing in electrophilic aromatic substitution reactions. Why ? (ii) Write the major product in the following reactions : (I) 2026_CBSE_Chemistry_Set_Region5_Subset_Set1_QUNKNOWN__ii_p12_20

2026_CBSE_Chemistry_Set_Region5_Subset_Set1_QUNKNOWN__ii_p12_20

(II)

2026_CBSE_Chemistry_Set_Region5_Subset_Set1_QUNKNOWN__ii_p12_23

Chemistry · Haloalkanes and Haloarenes