p-Block Elements - 05 (Nitrogen Family)

JavaScript isn't enabled in your browser, so this file can't be opened. Enable and reload.

Email *

Name of Student *

School and City *

Q1. Which of the following statements regarding allotropic forms of phosphorus is incorrect? *

1 point

Red phosphorus on heating catches fire and give dense red fumes of P4O10.

Red phosphorus is polymeric in nature consisting of chains of P4 tetrahedral.

White phosphorus is more reactive than red and black due to high angular strain.

Black phosphorus has two forms D-black and E-black phosphorus

Q2. One mole of calcium phosphide on reaction with excess water gives *

1 point

one mole of phosphine

two moles of phosphoric acid

one mole of phosphorus pentoxide

two moles of phosphine

Q3.PH3, the hydride of phosphorus is *

1 point

Covalent

Ionic

Coordinate

Electrovalent

Q4. Basicity of orthophosphoric acid is *

1 point

Q5. H3PO2 is the molecular formula of an acid of phosphorus. Its name and basicity respectively are *

1 point

hypophosphorous acid and two

hypophosphorous acid and one

hypophosphoric acid and two

phosphorus acid and two

Q6. The structural formula of hypophosphorous acid is *

1 point

Q7. Number of sigma bonds in P4O10 is *

1 point

Q8. Oxidation states of P in H4P2O5 , H4P2O6 , and H4P2O7 ,are respectively *

1 point

+ 3, + 5, + 4

+ 3, + 4, + 5

+ 5, + 3, + 4

+ 5, + 4, + 3

Q9. How many bridging oxygen atoms are present in P4O10? *

1 point

Q10. What is hybridization of P in PCl5 *

1 point

sp3

sp3d

sp2

sp3d2

A copy of your responses will be emailed to the address you provided.

Submit

Clear form

Never submit passwords through Google Forms.

reCAPTCHA

Privacy Terms

This content is neither created nor endorsed by Google. Report Abuse - Terms of Service - Privacy Policy

Forms