Air always contains some amount of water vapour at a given temperature. When the temperature of air decreases, the capacity of air to hold water vapour also decreases, and vice versa. When the temperature of air falls below a certain temperature, the excess water vapour present in the air gets transformed into very small droplets of water. This process is called condensation and the temperature at which condensation takes place is called the dew point. For condensation to take place a surface is required. Such a surface is called the nucleus. Tree leaves, grass and dust particles in air are examples of nucleii around which condensation occurs. Condensation of water vapour leads to the formation of clouds, rain, snow, sleet and hailstone.
During the day, when water bodies (oceans, lakes, ponds, etc.) are heated up by the sun, a large amount of water goes into air as water vapour.
When warm and moist air rises up, it ___________________ and gets cooled. | |||
Right Option : A | |||
View Explanation |
When the temperature of air ______________________, the capacity of air to hold water vapour also decreases. | |||
Right Option : A | |||
View Explanation |
Which of the following are correct : (a) During the day, when water bodies are heated up by the sun, a large amount of water goes into air as water vapour. (b) When the temperature falls below the dew point, the excess water present in the air gets condensed around the dust particles, forming tiny droplets of water. (c) Condensation of water vapour leads to the formation of clouds, rain, snow, sleet and hailstone. | |||
Right Option : D | |||
View Explanation |
My experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
It has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
My experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
A marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
It was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
One of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
Being a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
Abhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
My experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
I have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying