Class XI

Element is made up of
  1. Particles
  2. Matter
  3. Isotopes
  4. Atoms
Carbon-12 is chosen as standard atom because
  1. It is found in most organic compounds
  2. It is decomposable in nature
  3. Mass of 12 units has been measured very accurately
  4. Carbon is most common element
Non-metals are good at
  1. Accepting electrons
  2. Sharing electrons
  3. Donating electrons
  4. Both A and B
Colored gas includes
  1. Ammonia
  2. Chlorine
  3. Hydrogen chloride
  4. Hydrogen
 LPG stands for
  1. Liquefied purified gas
  2. Liquefied patrol gas
  3. Liquefied petroleum gas
  4. Latent petroleum gas
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