Q.9 The nature of an aqueous solution of ammonia (NH3) is:
A) Amphoteric C)Acidic
B) Neutral D) Basic
A) Amphoteric C)Acidic
B) Neutral D) Basic
Q.10 Unpolluted rain water has a pH of:
A) 4.9 C) 5.3
B) 5.6 D) 7.0
Q.11 In comparison with oxygen gas, a strong triple bond is present between two nitrogen
atoms in a molecule and therefore nitrogen gas is:
A) Highly reactive gas C) Moderately reactive gas
B) Completely inert like noble gases D) Very less reactive gas
Q.12 The catalyst used in the Haber’s process is:
A) Magnesium oxide C) Silicon oxide
B) Aluminium oxide D) Iron crystals with metal oxide promoters
A) 4.9 C) 5.3
B) 5.6 D) 7.0
Q.11 In comparison with oxygen gas, a strong triple bond is present between two nitrogen
atoms in a molecule and therefore nitrogen gas is:
A) Highly reactive gas C) Moderately reactive gas
B) Completely inert like noble gases D) Very less reactive gas
Q.12 The catalyst used in the Haber’s process is:
A) Magnesium oxide C) Silicon oxide
B) Aluminium oxide D) Iron crystals with metal oxide promoters
Q.13 Which one of the following is correct equation of 1st ionization of sulphuric acid?
A) H2SO4(aq) + H2O(l) 2H+ + SO42- C) H2SO4(aq) + H2O(l) 2H+ + SO42-
B) H2SO4(aq) + H2O(l) H+(aq) + HSO4- D) H2SO4(aq) + H2O(l) H3O+ + SO42-
A) H2SO4(aq) + H2O(l) 2H+ + SO42- C) H2SO4(aq) + H2O(l) 2H+ + SO42-
B) H2SO4(aq) + H2O(l) H+(aq) + HSO4- D) H2SO4(aq) + H2O(l) H3O+ + SO42-