Gopa Shilpi Classes - ICSE - Class IX - Chemistry
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Arindam Bhattacharjee asked question Gas - 12- Arindam Bhattacharjee asked question Gas - 11
- Arindam Bhattacharjee asked question Gas - 10
- Arindam Bhattacharjee asked question Gas - 9
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- 1 Give reasons for the following :(a) All temperatures in the absolute (Kelvin) scale are in positive figures.(b) Gases have lower density compared to that of solids or liquids.(c) Gases exert pressure in all directions.(d) It is necessary to...
- During the chemistry practical when hydrogen sulphide gas having offensive odour is prepared for some test in the laboratory, we can smell the gas from even 50 metres away. Explain the phenomenon.What is meant by aqueous tension? How is the pressure...
- (a) State the law verified by the following figure:(b) Draw P.V. isothermal for the above law.
- (a) State the law which the following graph verifies.(b) Derive the mathematical expression for it.(c) Give one application/use where the above law is employed.
- 1. A cylinder of 20 litres capacity contains a gas at 100 atmospheric pressure. How many flasks of 200 cm3 capacity can be filled from it at 1 atmosphere pressure temperature remaining constant?2. At constant temperature, the effect of change of...
- a) Certain amount of a gas occupies a volume of 0.4 litre at 17°C. To what temperature should it be heated so that its volume gets (a) doubled (b) reduced to half, pressure remaining constant?b) A gas at 240 K is heated to 127°C. Find the percentage...
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