CameraIcon

SearchIcon

MyQuestionIcon

2

You visited us 2 times! Enjoying our articles? Unlock Full Access!

Preparations and Uses of Caustic Soda

Assertion : ...

Question

Assertion : $N a O H$ cannot be stored in a vessel made of $A l$ or $Z n$ . Reason: A protective layer of oxide is formed on the surface of the metal.

A

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

Assertion is correct but Reason is incorrect

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

D

Assertion is incorrect but Reason is correct

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C Assertion is correct but Reason is incorrect
The combination of aluminum and sodium hydroxide results in a large production of hydrogen gas:

$2 A l (s) + 6 N a O H (a q) ⟶ 3 H_{2} (g) + 2 N a_{3} A l O_{3} (a q)$

Hydrogen gas is explosive. Therefore mixing lye (sodium hydroxide) and aluminum in a closed container is dangerous.

Suggest Corrections

thumbs-up

0

Similar questions

Q. Assertion: The impurities such as

{SiO}_{2}

present in iron ore is removed by

{CaCO}_{3}

CaO

formed by decomposition of

{CaCO}_{3}

{SiO}_{2}

Q. Assertion: The compressibility factor for

H_{2}

H e

(1 + \frac{P b}{R T})

Reason: The compressibility factor for

H_{2}

H e

can be derived from Van der Waal's equation.

Assertion – The non-fusible impurities present in iron ore are removed by $C a C O_{3}$ .

Reason: $C a C O_{3}$ which decomposes into $C a O$ and $C O_{2}$ . The $C a O$ formed reacts with $S i O_{2}$ to remove silica

Assertion (A) Order of the reaction can be zero or fractional.

Reason (R) We cannot determine order from balanced chemical equation.

(a) Both assertion and reason are correct and the reason is correct explanation of assertion
(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
(e) Assertion is incorrect but reason is correct.

Q. Assertion : Two electrons of helium atom are placed in only one shell but three electrons of lithium need two shells.
Reason: A shell can have maximum

{2n}^{2}

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Sodium Hydroxide

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Preparations and Uses of Caustic Soda

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon