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प्रश्न
State the method used for collecting the following gas:
Oxygen – a gas slightly soluble in water.
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उत्तर
The method used for collecting oxygen gas is the downward displacement of water. In this method, the gas jar is filled with water and inverted over the beehive shelf, so that the water is displaced downwards and oxygen is collected upwards.
संबंधित प्रश्न
What is the main difference between alchemy and chemistry?
State the functions of the following basic glass apparatus:
Glass test tube
State the functions of the following basic glass apparatus:
Hard glass boiling tube
State the functions of the following basic glass apparatus:
Retort
State the method used for collecting the following gas:
Sulphur dioxide – a gas highly soluble in water and heavier than air
Select the correct name from the choices given below for the following case.
A Medicine to treat pain, fever & inflammation.
Select the correct name from the choices given below for the following case.
A substance which dissolves grease & oil and is preferred as a – drain cleaner.
Select the correct apparatus from A, B, or C for the following functions of the apparatus given.
A long glass tube with a broad inlet at the top, which allows entry of the reactants into the round bottom flask, during laboratory preparations of gases.
Select the correct apparatus from A, B, or C for the following functions of the apparatus given.
A rectangular mesh with asbestos at its centre kept for initiating even distribution of heat to the bottom of the apparatus.
Give reasons for the following
Alchemy was considered a pseudoscience.
