MEDIUM
9th CBSE
IMPORTANT
Earn 100

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.

Important Questions on Model Test Paper 2

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.

MEDIUM
9th CBSE
IMPORTANT

What is the consequence of the given below condition?

A cell containing lower water concentration than the surrounding medium. 

MEDIUM
9th CBSE
IMPORTANT

What is the consequence of the given below condition?

A cell having equal water concentration to its surrounding medium. 

MEDIUM
9th CBSE
IMPORTANT
In a cluster of hutments, many people are suffering from malaria. Mention the unhygienic conditions that must be prevailing in that locality. How does a doctor confirm malaria? Explain the methods of prevention of malaria.
MEDIUM
9th CBSE
IMPORTANT
Why is the ozone layer called the ozone umbrella/shield? What would be the effects on the widening of ozone hole? 
MEDIUM
9th CBSE
IMPORTANT
Define green revolution. What are the common objectives of crop improvement? 
MEDIUM
9th CBSE
IMPORTANT
What is fractional distillation? What is the use of fractionating column in fractional distillation?