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All India Engineering / Architecture Entrance Examination (AIEEE)

CBSE Guess > AIEEE > AIEEE Papers > 2009 > Chemistry

AIEEE 2009 Chemistry

Q. 18. The major product obtained on interaction of phenol with sodium hydroxide and carbon dioxide is:

  1. phthalic acid

  2. benzoic acid

  3. salicylaldehyde

  4. salicylic acid

Sol: 
.

Answer: (4)

 Q. 19. Solid Ba(NO3)2 is gradually dissolved in solution. At what concentration of Ba2+ will a precipitate begin to form?






Sol: Concentration of Ba2+ needed to precipitate

Answer: (3)

Q. 20. Which one of the following reactions of xenon compounds is not feasible?







Sol: XeF6 reacts violently with water and gets hydrolysed to give highly explosive XeO3.

; Reaction (2) is reverse of this, so it is not feasible.

Answer: (2)


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