MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Preparations and Uses of Caustic Soda

Assertion A :...

Question

Assertion (A) : 'Al' liberates $H_{2}$ gas with both NaOH and HCl.
Reason (R) : 'Al' is amphoteric metal.

A

Both Assertion and Reason are true and Reason is the correct explanation of Assertion

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

B

Both Assertion and Reason are true and Reason is not the correct explanation of Assertion

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

C

Assertion is true but Reason is false

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

D

Assertion is false but Reason is true

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

Open in App

Solution

The correct option is A Both Assertion and Reason are true and Reason is the correct explanation of Assertion
Amphoteric metals are those metals which react with both acids and bases.
$2 A l + 6 H C l \to 2 A l C l_{3} + H_{2}$
$2 A l + 2 N a O H + 2 H_{2} O \to 2 N a A l O_{2} + 3 H_{2}$

Suggest Corrections

thumbs-up

0

Similar questions

Q. (i)
Assertion: A circle is not a rectilinear figure.
Reason: A figure formed by straight lines only is called a rectilinear figure.
(a) Both Assertion and Reason are true and Reason is a correct explanation of Assertion.
(b) Both Assertion and Reason are true but Reason is not a correct explanation of Assertion.
(c) Assertion is true and Reason is false.
(d) Assertion is false and Reason is true.
(ii)
Assertion: All right angles are equal to one another.
Reason: A unique line passes through a single point.
(a) Both Assertion and Reason are true and Reason is a correct explanation of Assertion.
(b) Both Assertion and Reason are true but Reason is not a correct explanation of Assertion.
(c) Assertion is true and Reason is false.
(d) Assertion is false and Reason is true.

Q. Assertion : Amount of cyanocobalamine required daily is 3 mcg
Reason : Its deficiency causes pernicious anaemia

Q. Assertion: A cyclic parallelogram is a square.
Reason: Diameter is the largest chord in a circle.
(a) Both Assertion and Reason are true and Reason is a correct explanation of Assertion.
(b) Both Assertion and Reason are true but Reason is not a correct explanation of Assertion.
(c) Assertion is true and Reason is false.
(d) Assertion is false and Reason is true.

Q. Assertion: Every parallelogram is a rectangle.
Reason: The angle bisectors of a parallelogram form a rectangle.
(a) Both Assertion and Reason are true and Reason is a correct explanation of Assertion.
(b) Both Assertion and Reason are true but Reason is not a correct explanation of Assertion.
(c) Assertion is true and Reason is false.
(d) Assertion is false and Reason is true.

Q. Assertion: C₄ – photosynthetic pathway is more efficient than C₃ pathway Reason: Photorespiration is suppressed in C₄ plants

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