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प्रश्न
State the function of
The asbestos fixed at the center of the wire gauze.
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उत्तर
The asbestos fixed at the centre of the wire gauze initiates even distribution of heat to the bottom of the apparatus. It also prevents glass apparatus from cracking
संबंधित प्रश्न
Write True or False against the following statement.
Chemistry plays an important role in the national economy:
Write True or False against the following statement.
Enzymes secreted by our body are chemicals:
Choose the correct alternative from the choices given below for the following statement:
Used is an important
State the functions of the following basic glass apparatus:
Retort
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.
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 metallic apparatus which supports the wire gauze.
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.
Give reasons for the following
Alchemy was considered a pseudoscience.
