Q.1
Ionic hydrides are formed by
  • halogens
  • chalogens
  • group one elements
Q.2
In solid ice, oxygen atom is surrounded
  • octahedrally by 2 oxygen and 4 hydrogen atoms
  • tetrahedrally by 4 hydrogen atoms
  • tetrahedrally by 2 hydrogen and 2 oxygen atoms
Q.3
When hydrogen peroxide is shaken with an acidified solution of potassium dichromate in presence of ether, the ethereal layer turns blue due to the formation of
  • Cr2O3
  • CrO(O2)2
  • CrO4 2–
Q.4
The hybridisation of oxygen atom is H2 O and H2Oare, respectively
  • sp and sp3
  • sp3 and sp3
  • sp and sp2
  • sp and sp
Q.5
Non-stoichiometric hydrides are formed by -----
  • Pa , V
  • C , Ni
  • Mn, Li
  • N , Cl
Q.6
The cause of permanent hardness of water is due to
  • MgCO3
  • CaCl2
  • Ca(HCO3)2
Q.7
The hardness of water can be determined by volumetrically using the reagent
  • sodium thio sulphate
  • EDTA
Q.8
Only one element of ________ forms hydride.
  • group 6
  • group 7
  • group 8
  • group 9
Q.9
Elements of which of the following group(s) of periodic table do not form hydrides.
  • Groups 7, 8, 9
  • Group 13
  • Groups 15, 16, 17
  • Group 14
Q.10
Hydrogen peroxide is obtained by the electrolysis of
  • water
  • sulphuric acid
  • hydrochloric acid
  • fused sodium peroxide
0 h : 0 m : 1 s