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Uses of Halogenoalkanes App's MCQ Download & e-Book - 264

MCQ:

The protection of earth from harmful rays of the sun is done by

  1. ozone layer
  2. UV rays
  3. stratosphere
  4. exosphere

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Uses of Halogenoalkanes App (Android & iOS)

Uses of Halogenoalkanes App (Android & iOS)

A level Chemistry App (Android & iOS)

A level Chemistry App (iOS & Android)

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College Chemistry App (Android & iOS)

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