||MCQS for JEE and AIPMT || HOME
TOPIC:: NITROGEN FAMILY: PAGE#25
CLICK ON THE CORRECT OPTION,
TO GET SOLUTION, CLICK ON SOLUTION

Q97) When orthophosphoric acid is heated to 600°C, the product formed is ... [ CBSE PMT 1989]




SOLUTION

2H3PO4 → 2HPO3 + 2H2O
Answer: (d)


Q98) Amongst the following elements ( whose electronic configurations are given below), the one having the highest ionization energy is [ IIT 1990]




SOLUTION

in option 'b' p orbital is half filled thus highest ionization energy
Answer: (b)


Q99) Structure of white phosphorus is ... [ BHU 1994]



SOLUTION


Answer:(c)



Q100) Among the following species, identify the isostructureal pairs... [ IIT 1996]
NF3, NO3- , BF3 H3O+, HN3



SOLUTION

both NF3 and H3O+ have pyramidal structures where as NO3- and BF3 both have trigonal planar structures.
Answer: (c)


logo
All contents ©Copyright 2013 www.gneet.com
Site Design © 2013 All Rights Reserved Gore Coaching Classes