Science Quiz

How does applying powder to a carrom board affect the movement of discs?

• Increases friction

• Reduces friction

• No effect on friction

• Causes discs to stick

Understanding friction and how to reduce it can enhance performance in various activities. Reducing friction on a carrom board can enhance ________.

How can reducing friction in industries lead to improvements in efficiency and equipment lifespan?

How can different types of friction affect carrom board gameplay?

• Increase speed of gameplay

• Decrease speed of gameplay

• Improve accuracy of shots

• Reduce control of the striker

How can friction on a carrom board be reduced to improve gameplay?

• Applying powder

• Adding more discs

• Increasing the size of the board

• Using heavier discs

The hearing range of human ear is

• The hearing range of human ear is

• Less than 20 Hz

• More than 20,000 Hz

• 20 Hz to 25,000 Hz

What is the unit of frequency?

• Hertz

• Watt

• Newton

• Joule

Which of the following animals can hear ultrasonic sound?

• Bats

• Dogs

• Cats

• Elephants

Draw the diagram of leaf and its components

Why does iron rust?