KCET 2007 Chemistry Question Paper with Answer Key PDF (May 9)

KCET Questions

• 1.

  Alary muscle is associated with

  • heart & circulation
  • malpighian tubules & excretion
  • trachea & respiration
  • none of the above
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• 2.

  Which one of the following is an amphoteric oxide?

  • $ZnO$
  • $Na _{2} O$
  • $SO _{2}$
  • $B _{2} O _{3}$
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• 3.

  Acetaldehyde gives orange coloured precipitate on treatment with

  • 2, 4-DNP
  • $NH_2OH $
  • $NaHSO_3$
  • NaOH
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• 4.

  A vessel at 1000 K contains $CO_2$ with a pressure of 0.5 atm. Some of the $CO_2$ is converted into CO on the addition of graphite. It the total pressure at equilibrium is 0.8 atm, the value of K is

  • 3 atm
  • 0.3 atm
  • 0.18 atm
  • 1.8 atm
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• 5.

  After absorbring a slowly moving neutron of Mass mN (momentum $\approx$ 0) a nucleus of mass M breaks into two nuclei of masses $m_1$ and $5m_1$ ($6\, m_1 = M + mN$ ) respectively. If the de Broglic wavelength of the nucleus with mass $m_1$ is $\lambda$, the de Broglie wevelength of the nucleus will be:

  • $5\,\lambda$
  • $\lambda $\5
  • $\lambda$
  • $25\,\lambda$
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• 6.

  Ammonia, on reaction with excess of chlorine, gives

  • $NCl _{3}$ and $HCl$
  • $N _{4}$ and $NH _{4} Cl$
  • $NCl _{3}$ and $NH _{4} Cl$
  • $N _{2}$ and $HCl$
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