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Assertion (A) : Silica is soluyble in ...

Assertion (A) : Silica is soluyble in ` HF`.
Reason (R) : `SiO_2 4HF rarr SiF_4 +2H_2 O`
` SiF_4 2HF rarr H_2 SiF_6` .

A

If both (A) and (R) are correct and (R) is correct explanation of (A)

B

If both (A) and (R) are correct and (R) is not correct explanation of (A)

C

If (A) is correct , but (R) is incorrect

D

If (A) is incorrect but (R) is correct .

Text Solution

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A
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CENGAGE CHEMISTRY-P-BLOCK GROUP 14 - CARBON FAMILY-Exercises (Assertion-Reasoning)
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  4. Assertion (A) : Silicones are hdyreopbhobic in nature . Reason (R) ...

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  6. Assertion (A) : Graphite si a good conductore of heat and electriciy ...

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  7. Assertion (A) : Carbon monoxide is a posonous gas . Reason (R) : Ca...

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  8. Assertion (A) : Carbon forms a large number of compounds . Reason (...

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  9. Assertion (A) : Both CO2 snd SiO2 have same strucitrue . Reason (R...

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  12. Assertion (A) : Maximum covalency of carbon si foure . Reason (R) :...

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  13. Assertion (A) : Graphite is soft while diamond is very hard . Reaso...

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  15. Assertion (A) : Graphite is chemically more reactive than diamond . ...

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  17. Assertion (A) : When CO2 is passed through lime water the soluting tu...

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  18. Assertion (A) : SnCl2 has high meling point , whereas snCl4 has low m...

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  19. Assertion (A) : CCl4 is inert towares hydrolusis but SiCl4 is readily...

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  20. Assertion (A) : Aluminum is passive towares conc HNO2 Reason (R) ...

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