Q1.
Ostwald's process is used for the manufacture of
📅MOE 2066
Q2.
The coloured gas is
📅IOM 2007
Q3.
Mixed anhydride of HNO3 and HNO2 is
📅IOM
Q4.
The elements of group VA are generally known as
Q5.
Ammonia is dried by passing over
📅MOE/IOE/KU
Q6.
The brown ring test, during qualitative analysis is performed to detect
📅IOM 1992
Q7.
The reaction P + conc. HNO3 would yield
Q8.
Nitrogen dioxide cannot be obtained by heating
📅MOE 2008
Q9.
Which of the following is most reactive?
📅MOE 2065
Q10.
In which of the following compound nitrogen have -1 oxidation state?
📅MOE 2060
Q11.
Which of the following ions give clear coloured solution in excess of ammonium hydroxide?
📅MOE 2055
Q12.
Oxidation number of nitrogen ranges from
📅MOE 2055
Q13.
By excessive heating of NH4CNS ... is obtained.
📅MOE 2055
Q14.
NH3 is absorbed by
📅MOE 2053•KU 2003
Q15.
When Cu reacts with conc. HNO3, then the brown gas evolved is
📅MOE 2053
Q16.
In diamond carbon atom has … hybridization
📅MOE 2052
Q17.
Aqua regia is a mixture of
📅IOM
Q18.
Phosphorus is
📅KU 2004
Q19.
Which one of the following is the strongest reducing agent?
📅IE 2002
Q20.
Structure of ammonia is
📅IE 2004
Q21.
H2 is evolved by the action of cold and dil. HNO3 on
📅IE 2005
Q22.
Which of the following allotrope of phosphorous doesn't exist?
📅IOM 2066
Q23.
When white phosphorous reacts with caustic soda to produce PH3 and NaH2PO2, the reaction is an example of
📅MOE
Q24.
Which of the following allotropes of phosphorous show phosphorescence?
📅IOM/BPKIHS