Draw the structure of ${\mathrm{H}}_3{\mathrm{PO}}_3$.

Important Questions on p-Block Elements

EASY

12th ICSE

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 7 - p-Block Elements>ICSE-2018>Q 2

Explain why nitrogen does not form pentahalides.

EASY

12th ICSE

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 7 - p-Block Elements>ICSE-2018>Q 4

Explain why $\mathrm{ICl}$ is more reactive than ${\mathrm{I}}_2$.

EASY

12th ICSE

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 7 - p-Block Elements>ICSE-2018>Q 5

Draw the structure of ${\mathrm{HClO}}_4$.

EASY

12th ICSE

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 7 - p-Block Elements>ICSE-2018>Q 7

Explain why mercury loses its meniscus in contact with ozone.

EASY

12th ICSE

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 7 - p-Block Elements>ICSE-2018>Q 8

Explain why halogens are coloured and the colour deepens on moving down in the group from fluorine to iodine.

EASY

12th ICSE

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 7 - p-Block Elements>ICSE-2018>Q 9

Explain why hydride of sulphur is a gas while hydride of oxygen is a liquid.

EASY

12th ICSE

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 7 - p-Block Elements>ICSE-2019>Q 19

Complete and balance the following reactions: ${\mathrm{P}}_4+10{\mathrm{H}}_2{\mathrm{SO}}_4\to$_____+_____+_____.

EASY

12th ICSE

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 7 - p-Block Elements>ICSE-2020>Q 21

Complete and balance the following chemical equations: ${\mathrm{P}}_4+\mathrm{NaOH}+{\mathrm{H}}_2\mathrm{O}\underset{\mathrm{Inert} \mathrm{atm}.}{\overset{\mathrm{heat}}{\to }}$_____+_____.