NEET 2018 Question Paper with Answer Key PDFs in Hindi WW

NEET Questions

• 1.

  What will be the equilibrium constant of the given reaction carried out in a $ 5 \,L $ vessel and having equilibrium amounts of $ A_2 $ and $ A $ as $ 0.5 $ mole and $ 2 \times 10^{-6} $ mole respectively ? The reaction : $ \ce{A2 <=> 2A} $

  • $ 0.16 \times 10^{-11} $
  • $ 0.25 \times 10^{5} $
  • $ 0.4 \times 10^{-5} $
  • $ 0.2 \times 10^{-11} $
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• 2.

  Write a balanced equation for the reaction of molecular nitrogen (N₂) and oxygen (O₂) to form dinitrogen pentoxide. \((f(x)=x^2)\)

  • N₂ + O₂ → N₂O₅ (unbalanced equation)
  • 2N₂ + 5O₂ → 2N₂O₅
  • option 3
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• 3.

  Minority carriers in a $p-type$ semiconductor are

  

  • Holes
  • Free electrons
  • Both holes and free electrons
  • Neither holes nor free electrons
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• 4.

  An example of a psychedilic agent is

  • DNA
  • LSD
  • DDT
  • TNT
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• 5.

  The reagent which can do the conversion $CH _{3} COOH \longrightarrow CH _{3}- CH _{2}- OH $ is

  

  • $LiAIH_4$ / ether
  • $H_2, Pt$
  • $NaBH_4$
  • $Na$ and $C_2H_5OH$
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• 6.

  A parallel plate air capacitor is charged to a potential difference of V volts. After disconnecting the charging battery the distance between the plates of the capacitor is increased using an insulating handle. As a result the potential difference between the plates

  • increases
  • decreases
  • does not change
  • becomes zero
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