Class XI

 Smallest particle of a compound is
  1. Atom
  2. Electrons
  3. Molecules
  4. All of these
Oxidizing agents does not include
  1. Potassium iodide
  2. Potassium manganate
  3. Potassium dichromate
  4. Promine solutions
In an atom, adding number of protons and neutrons
  1. Number of electrons can be obtained
  2. Number of nucleons can be obtained
  3. Atomic number of element can be obtained
  4. Number of positrons can be obtained
Less corrosive acid is
  1. H2CO3
  2. H2SO4
  3. HNO3
  4. HCl
 In plenty of space, natural movement of particles occur due to
  1. Concentration gradient
  2. Osmotic pressure
  3. Diffusion
  4. Active transport
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