MEDIUM
8th CBSE
IMPORTANT
Earn 100

Differentiate between electrolytes and non-electrolytes. Give two examples of each.

Important Questions on Test

MEDIUM
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 20 - Test>Test>Q 9
Describe how an iron spoon can be electroplated with copper.
MEDIUM
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 20 - Test>Test>Q 10
Why are places on hills unsafe during thunderstorms?
MEDIUM
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 20 - Test>Test>Q 11
How can you show that friction on a smooth marble is less than friction on a brick floor? List two places in which a rough floor is preferable to a smooth floor.
MEDIUM
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 20 - Test>Test>Q 12
Draw a labelled diagram of a gold leaf electroscope. What is its working principle?
MEDIUM
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 20 - Test>Test>Q 13
A box of mass 10 kg has a base of area 1m2. What is the pressure exerted by the box on the ground? (Use 1 kg-f=10 N).
MEDIUM
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 20 - Test>Test>Q 14
Four shapes are given below, with the direction of flow of the water indicated by arrows. Which of them is likely to move against the flow of water with the greatest ease?
MEDIUM
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 20 - Test>Test>Q 15
A battery is connected to an LED. Wires from the negative ends of the battery and the LED are placed in different liquids. In the case of which liquid will the LED not glow?