question_answer17) (a) Why are haloarenes less reactive than haloalkanes towards nucleophilic substitution reaction? 1 (b) Why is used during the reaction of alcohols with in the conversion of an alcohol to the alkyl bromide? 1View Answer play_arrow
question_answer19) Describe the following about halogens : (a) Relative oxidizing power of halogens. 1 (b) Relative acidic strength of hydrogen halides. 1 (c) Formation of oxoacids of halogens and the structure of oxoacids of chlorine only. 1View Answer play_arrow
question_answer28) An organic compound (A) on treatment with ethyl alcohol gives a carboxylic acid (B) and compound (C). Hydrolysis of (C) under acidified condition gives (B) and (D). Oxidation of (D) with also gives (B), (B) on heating with gives (E) having molecular formulas. (E) does not give Tollen's test and does not reduce Fehling's solution. Identify (A), (B), (C), (D) and (E). 5View Answer play_arrow
question_answer29) (a) How does acidifies solution reacts with : 2 (i) Iron () ions (ii) Oxalic acid. (b) Name the oxometal amine of one of the transition metals in which the metal exhibits the oxidation state equal to the group number. 1 (c) Write the electronic configuration of ion and calculate the magnetic moment on the basis of spin only formula. (Atomic no. of = 58) 2View Answer play_arrow
question_answer30) On dissolving 3.24 gm. of sulphur in 40 gm of benzene boiling point of solution was higher than that of benzene by 0.81 K. value for benzene is 2.53 K kg . What is the molecular formula of Sulphur? (Atomic mass of sulphur = 32 g ) 5View Answer play_arrow
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