When fluoride is heated with conc. $H_{2} {SO}_{4}$ and ${MnO}_{2}$ the gas evolved is -

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Important Questions on The p-Block Elements

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Beta Question Bank for Engineering: Chemistry>Chapter 19 - The p-Block Elements>EXERCISE-2>Q 42

Which amongst the following reactions cannot be used for the preparation of the halogen acid ?

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Beta Question Bank for Engineering: Chemistry>Chapter 19 - The p-Block Elements>EXERCISE-2>Q 43

Helium is obtained out of which of the following.?

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Beta Question Bank for Engineering: Chemistry>Chapter 19 - The p-Block Elements>EXERCISE-2>Q 44

Refer the statement, which prompted the Neil Bartlett to prepare the first noble gas compound that is -

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Beta Question Bank for Engineering: Chemistry>Chapter 19 - The p-Block Elements>EXERCISE-2>Q 45

Pick out the correct statement for

{XeF}_{6}

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Beta Question Bank for Engineering: Chemistry>Chapter 19 - The p-Block Elements>EXERCISE-2>Q 46

Conc.

{HNO}_{3}

is yellow coloured liquid due to -

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Beta Question Bank for Engineering: Chemistry>Chapter 19 - The p-Block Elements>EXERCISE-2>Q 47

When chlorine gas is passed through an aqueous solution of a potassium halide in the presence of chloroform, a violet colouration is obtained. On passing more of chlorine water, the violet colour is disappeared and solution becomes colourless. This test confirms the presence of ............ in aqueous solution. -

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Beta Question Bank for Engineering: Chemistry>Chapter 19 - The p-Block Elements>EXERCISE-2>Q 48

Which of the following oxide(s) gives brown ppt on reaction with conc.