Class XI

One of the orbitals is non-directional
  1. f- orbital
  2. s- orbital
  3. p- orbital
  4. d- orbital
Maximum number of electrons in a subshell with l = 3 and n = 4 is
  1. 14
  2. 16
  3. 32
  4. 12
When an electric discharge is passed through gaseous hydrogen, the H2 molecules dissociate and the energetically excited hydrogen atoms produced emit electromagnetic radiation of discrete frequencies. The hydrogen spectrum consists of
  1. several lines named after their discoverers
  2. a continuous spectrum that reduces to zero at small wavelengths
  3. several series of lines named after their discoverers
  4. a continuous spectrum that reduces to zero at large wavelengths
Values of e/m (charge/mass) in the categories alpha particle (α), electron (e) and protons (p) increase in the order:
  1. a < p < e
  2. e < α < p
  3. p < e < α
  4. α < e < p
An atom of an element contains 29 electrons and 35 neutrons. The number of protons are:
  1. 35
  2. 32
  3. 29
  4. 30
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