Welcome to your Ncert - class 9- science - Chapter 1 – Matter in Our Surroundings 2
Why does perspiration leave a cooling effect on our body?
Which one of the following statements related to the process of evaporation is incorrect?
On heating, temperature _______, particles __________energy, intermolecular space ___________ and force of attraction ____________
A liquid can change its shape easily. This can be attributed to which of the following fact.
While mixing sugar with water, the level of water does not increase because _____________.
Use the following information to answer the below question.
Martha mixed some marble powder with dry ice. On keeping the mixture in the open air for a few minutes, the dry ice vanished and only the dry powder was left behind.
The dry ice vanished because of
Which of the following represents true statement(s)?
Evaporation that occurs directly from the solid phase below the melting point is called as:
Based on the statements given below, choose the correct answer.
Select the characteristics of particles of matter.
What is the order of the three states of matter when they are arranged in the decreasing order of the compressibility of their molecules?
Which of the following is not a property of particles of matter?
The smell of the deodorant sprayed on one side of the room travels to the other side of the room. This proves that:
What is the effect of pressure on gas
If normal ice had been kept in place of the dry ice, and the mixture had been exposed to room temperature for a few minutes, then it would result in the
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