Chemistry 15th group elements online test

List – I List - II

1. H4P2O7 A. p - p bond is present

2. HPO2 B. Dibasic acid

3. H3PO3 C. Mono basic acid

4. H4 P2O6 D. P - O - P bond is present

E. Tribasic acid


The oxy acid of phosphorous which has more non ionisable hydrogens


In correctly matched set for hydrides of 15th group element


Moist ammonia cannot be dried by using


The number of P - O - P bond present in P4O6 & P4O10 respectively are


Incorrect statements about phosphorous molecule are

i) P - P -P bond angles are 60°

ii) It has Tetrahedral structure

iii) It contains 4 P - P bonds only

iv) It is less reactive then Nitrogen molecule


Assertion (A): The ability of VA group elements hydrides to donate electron pair decreases on moving down the group.

Reason ( R ) : As size of central atom increases, delocalization of electron pair increases.


Ortho phosphates are identified in the qualitative analysis by the formation of


The hydride used in Holme's signal


The neutral & acidic oxides of Nitrogen respectively are


The no of P-O bonds & lone pairs in P4O6 molecule is respectively


Which of the following cannot form compounds M4O10


NCl3 + H2O =NH3 + x What is X


The no of P-P bonds in H4P2O7 & P4O6 is respectively




































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Discussion

Amjad

shouldn't the ans of que 3 be option B as on ncert ????

2184 days 3 hours 18 minutes ago

Joshna John

The hydride used in holmes signal is NH3.

2193 days 8 hours 2 minutes ago

Joshna John

I have confusion in question number 7... Please explain......

2193 days 8 hours 4 minutes ago

Lasya Reddy

I frequently write the same exams for practice but the next times answers are being changed...! please take care of that

2545 days 21 hours 31 minutes ago

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