MEDIUM
9th CBSE
IMPORTANT
Earn 100

What is the atomicity of sulphur?

Important Questions on Model Test Paper 2

MEDIUM
9th CBSE
IMPORTANT
All the gases form cathode rays and anode rays when electricity is passed through them: What does the formation of cathode rays tell us about the atoms?
MEDIUM
9th CBSE
IMPORTANT

All the gases form cathode rays and anode rays when electricity is passed through them: What does the formation of anode rays tell us about the atoms?

HARD
9th CBSE
IMPORTANT
When a ball is thrown vertically upwards, it goes through a distance of 19.6 m. Find the initial velocity of the ball and the time taken by it to rise to the highest point. (Acceleration due to gravity, g = 9.8 m/s2)
MEDIUM
9th CBSE
IMPORTANT

The hanging bob of a simple pendulum is displaced to one extreme position B and then released. It swings towards the centre position A and then to the other position C. In which position does the bob have maximum potential energy? Give reasons for your answer.

MEDIUM
9th CBSE
IMPORTANT
The hanging bob of a simple pendulum is displaced to one extreme position B and then released. It swings towards centre position A and then to the other position C. In which position does the bob have Maximum kinetic energy? Give reasons for your answer.
MEDIUM
9th CBSE
IMPORTANT
Figure X shows a trace of a sound wave produced by a particular tuning fork:

Question Image

On the graph paper given in figure Y, draw a trace of the sound wave, which has a higher frequency than that shown in Figure X.

MEDIUM
9th CBSE
IMPORTANT
Figure X shows a trace of a sound wave produced by a particular tuning fork:

Question Image

On the graph paper shown in Figure Y, draw a trace of the sound wave, which has a larger amplitude than that shown in figure X.

MEDIUM
9th CBSE
IMPORTANT

What is the consequence of the given below condition?

A cell having higher water concentration than the surrounding medium.