MyQuestionIcon

1

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

Reaction of Metallic Oxides and Hydroxides with Acids

Assertion :Mo...

Question

Assertion :Mosses are used as pollution indicators Reason: They absorb metals.

A

If both the assertion and the reason are true and the reason is a correct explanation of the assertion

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

B

If both the assertion and reason are true but the reason is not a correct explanation of the assertion

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

C

If the assertion is true but the reason is false

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

D

If both the assertion and reason are false

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

Open in App

Solution

The correct option is A If both the assertion and the reason are true and the reason is a correct explanation of the assertion
Rubling and Tyler (1979) showed that air dried mosses can absorb metals. The accumulation of heavy metal cations in mosses enables them to be used as pollution indicators.
So, the correct answer is 'If both the assertion and the reason are true and the reason is a correct explanation of the assertion'

Suggest Corrections

thumbs-up

0

Similar questions

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

Q. Assertion : Photosensitivity of a metal is high if its work function is small.

Reason : Work function $h f_{0}$ where $f_{0}$ is the threshold frequency.

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

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: The point O(0, 0) lies in quadrant I.
Reason: The point O(0, 0) lies on both the axes.
(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.

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Acid Base Reactions

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Reaction of Metallic Oxides and Hydroxides with Acids

Standard X Chemistry

Join BYJU'S Learning Program

CrossIcon