CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
Question

Why a dry cell becomes dead after a long time even it has not been used?

A

because electrolyte undergoes decomposition

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

because it discharges slowly

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

because zinc reacts with the ammonium chloride

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

because it requires an optimum temperature to work

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

Hint: A dry cell has the electrolyte immobilized as a glue, with just enough dampness in it to permit current to stream.

Explanation for correct option:

  • A dry cell has an electrolyte and a couple of cathodes.
  • A dry cell consistently has some inside obstruction.
  • Due to this inner obstruction, there is in every case some voltage drop related with the cell regardless of whether the cell isn't being used, and ultimately become dead after quite a while.
  • And ammonium chloride (NH4Cl) is acidic in nature. A zinc holder is consumed.

Hence, option (C) is correct.


flag
Suggest Corrections
thumbs-up
5
mid-banner-image
mid-banner-image
Join BYJU'S Learning Program
Select...
similar_icon
Related Videos
thumbnail
lock
Metallurgy of Aluminium
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
Select...