All India Engineering / Architecture Entrance Examination (AIEEE)

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AIEEE 2009 Chemistry

Q. 24. In an atom, an electron is moving with a speed of 600 m/s with an accuracy of 0.005%. Certainity with which the position of the electron can be located is

Sol:

Answer: (4)

Q. 25. Which of the following on heating with aqueous KOH, produces acetaldehyde?

1. CH₃CHCl₂
   
   
2. CH₃COCl
   
   
3. CH₃CH₂Cl
   
   
4. CH₂ClCH₂Cl

Sol:
 

Answer: (1)

Q. 26. A liquid was mixed with ethanol and a drop of concentrated H₂SO₄ was added. A compound with a fruity smell was formed. The liquid was:

1. CH₃COOH
   
   
2. CH₃OH
   
   
3. HCHO
   
   
4. CH₃COCHb3

Sol:
Ethyl acetate (ester) has fruity smell.

Answer: (1)

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