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Q57) The bond present in N2O5 are [ IIT 1986]




SOLUTION

Due loan pair Nitrogen can form Coordinate bonds
Answer: (b)


Q58) P4O10 is not used to dry NH3 gas because [ KCET 2001]




SOLUTION

P4O10 is acidic and NH3 is basic and reaction takes place between two
P2O5 + 6NH3 + 3H2O → 2(NH4)3PO4
Answer: (c)


Q59) Which of the following is paramagnetic? [ MPCET 1990]



SOLUTION

NO has a three electron bond
Answer:(a)



Q60) Which of the following is a cyclic phosphate [ Haryana CEET 1196]



SOLUTION

metaphosphate have cyclic structure with general formula (HPO3)n
Answer: (c)


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