Class X

First antiseptic used in operation theatre was
  1. alcohol
  2. alkane
  3. acid
  4. phenol
Almost 95% of compounds are of carbon because it can form
  1. single bonds
  2. double bonds
  3. triple bonds
  4. multiple bonds
Simple alkanes (saturated hydrocarbons) are
  1. straight chain hydrocarbons
  2. branched chain hydrocarbons
  3. can be both A and B
  4. no chain hydrocarbons
. Propane (C3H8) and butane (C4H10) in liquid form are used in
  1. LSG
  2. LPG
  3. ECG
  4. LNG
In naming alkane stem tells about the
  1. number of hydrogen atoms
  2. number of oxygen atoms
  3. number of carbon atoms
  4. number of bonds
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