CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

What happens when calcium is treated with water?

(i) It does not react with water

(ii) It reacts violently with water

(iii) It reacts less violently with water

(iv) Bubbles of hydrogen gas formed stick to the surface of calcium


A

(i) and (iv)

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

(ii) and (iii)

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

(i) and (ii)

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

(iii) and (iv)

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

The correct option is D

(iii) and (iv)


The explanation for correct option:

D. (iii) and (iv)

The reaction of Calcium with water:

  • When calcium Ca reacts with water H2O, calcium hydroxide Ca(OH)2 is formed along with the liberation of hydrogen gas H2. The bubbles of hydrogen gas get stick to the surface of calcium.
  • The reaction is less violent in nature.
  • The chemical equation can be depicted as:

Ca(s)+2H2O(l)Ca(OH)2(aq)+H2

Explanation for incorrect options

Option A: (i) is incorrect as calcium reacts with water while (iv) is correct that bubbles of hydrogen gas formed stick to the surface of calcium. Therefore, this option stands incorrect.

Option B: (ii) is incorrect, as calcium reacts less violently with water while (iii) is correct. Thus, this option stands incorrect.

Option C: Calcium reacts less violently with water.

Hence, option D i.e. (iii) and (iv) is correct.


flag
Suggest Corrections
thumbs-up
11
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Chemical Properties of Metals
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon