Advertisements
Advertisements
प्रश्न
State the method used for collecting the following gas-
Ammonia – a gas highly soluble in water and lighter than air
उत्तर
The method used for collecting ammonia gas is the downward displacement of air. This method is used for gases like ammonia which is soluble in water and lighter than air.
संबंधित प्रश्न
What is science?
___________ deals with the study of matter and the changes it undergoes.
Write True or False against the following statement.
Gunpowder is an insecticide:
Choose the correct alternative from the choices given below for the following statement:
Which one of the following is a pesticide?
State why a round bottom flask is preferred to a flat bottom flask – during the preparation of gases in the laboratory.
State the method used for collecting the following gas:
Oxygen – a gas slightly soluble in water.
In the medieval ages – the philosopher’s stone was connected with all transformations. Explain.
Select the correct name from the choices given below for the following case.
A water-soluble cleaning agent – not inactivated by hard water.
Match the apparatus A to J shown below with their correct names 1 to 10 given below:
1. Delivery Tube
2. Pipette
3. Wire gauze
4. Bee-hive shelf
5. Thistle funnel
6. Flat bottom flask
7. Test tube stand
8. Burette
9. Retort
10. Conical flask
Give reasons for the following
Alchemy was considered a pseudoscience.
