Name two gases which deplete ozone layer.

Important Questions on Elements of Groups 16,17,and 18

MEDIUM

12th Maharashtra Board

IMPORTANT

Chemistry Standard 12>Chapter 7 - Elements of Groups 16,17,and 18>Exercises>Q 2

Give two uses of ${\mathrm{ClO}}_2$.

MEDIUM

12th Maharashtra Board

IMPORTANT

Chemistry Standard 12>Chapter 7 - Elements of Groups 16,17,and 18>Exercises>Q 2

What is the action of bromine on magnesium metal?

MEDIUM

12th Maharashtra Board

IMPORTANT

Chemistry Standard 12>Chapter 7 - Elements of Groups 16,17,and 18>Exercises>Q 2

Write the names of allotropic forms of selenium.

MEDIUM

12th Maharashtra Board

IMPORTANT

Chemistry Standard 12>Chapter 7 - Elements of Groups 16,17,and 18>Exercises>Q 2

What is the oxidation state of $\mathrm{S}$ in ${\mathrm{H}}_2{\mathrm{SO}}_4$?

MEDIUM

12th Maharashtra Board

IMPORTANT

Chemistry Standard 12>Chapter 7 - Elements of Groups 16,17,and 18>Exercises>Q 2

The ${\mathrm{pK}}_{\mathrm{a}}$ values of $\mathrm{HCl}$ is $-7.0$ and that of $\mathrm{HI}$ is $-10.0$. Which is the stronger acid?

HARD

12th Maharashtra Board

IMPORTANT

Chemistry Standard 12>Chapter 7 - Elements of Groups 16,17,and 18>Exercises>Q 2

Give one example showing reducing property of ozone.

MEDIUM

12th Maharashtra Board

IMPORTANT

Chemistry Standard 12>Chapter 7 - Elements of Groups 16,17,and 18>Exercises>Q 2

Write the reaction of conc. ${\mathrm{H}}_2{\mathrm{SO}}_4$ with sugar.

MEDIUM

12th Maharashtra Board

IMPORTANT

Chemistry Standard 12>Chapter 7 - Elements of Groups 16,17,and 18>Exercises>Q 2

Give two uses of chlorine.