MCQ
When we remove polyester or woolen clothes in dark, we can see a spark and hear a crackling sound. Which of the following is responsible for it?
- ✓Static electricity
- BCurrent electricity
- CPositive charge
- DNegative charge
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
|
|
Column $I$
|
|
Column $II$
|
|
$(A)$
|
Carbon dioxide in air
|
$(i)$
|
Damage ozone layer
|
|
$(B)$
|
Sulphur dioxide in air
|
$(ii)$
|
Produces acid rain
|
|
$(C)$
|
Chlorofluorocarbons
|
$(iii)$
|
Prevents photosynthesis
|
|
$(D)$
|
Dust in air
|
$(iv)$
|
leads to gloabal warming
|