Hydrogen & s-Block · JEE Main previous year questions

2004 3 questions

1. Q1902004 · 24 Apr 2004 · Shift 1

   Beryllium and aluminium exhibit many properties which are similar. But the two elements differ in :

   1. A.exhibiting maximum covalency in compounds
   2. B.exhibiting amphoteric nature in their oxides
   3. C.forming covalent halides
   4. D.forming polymeric hydrides
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   Answer: A

2. Q2002004 · 24 Apr 2004 · Shift 1

   On mixing ethyl acetate with aqueous sodium chloride, the composition of the resultant solution is

   1. A.$\mathrm{C}{\mathrm{H}}_3\mathrm{COO}{\mathrm{C}}_2{\mathrm{H}}_5+\mathrm{NaCl}$
   2. B.$\mathrm{C}{\mathrm{H}}_3\mathrm{Cl}+{\mathrm{C}}_2{\mathrm{H}}_5\mathrm{COONa}$
   3. C.$\mathrm{C}{\mathrm{H}}_3\mathrm{COCl}+{\mathrm{C}}_2{\mathrm{H}}_5\mathrm{OH}+\mathrm{NaOH}$
   4. D.$\mathrm{C}{\mathrm{H}}_3\mathrm{COONa}+{\mathrm{C}}_2{\mathrm{H}}_5\mathrm{OH}$
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   Answer: A

3. Q2032004 · 24 Apr 2004 · Shift 1

   Which of the following undergoes reaction with 50% sodium hydroxide solution to give the corresponding alcohol and acid?

   1. A.Phenol
   2. B.Benzoic acid
   3. C.Butanal
   4. D.Benzaldehyde
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   Answer: D