A long glass apparatus closed at one end is used for collecting gases.
Important Questions on Introduction to Chemistry
A glass apparatus which measures liquid by sucking the liquid at one end up to the marked level and later pouring it out.
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.
A clay vessel kept in a trough of water during the collection of a gas by downward displacement of water.
A modern apparatus with an air regulator, used for heating purpose.
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.
Give reasons for the following:
Preservatives are added to food or beverages.
Give reasons for the following:
Titanium dioxide is an important ingredient in cosmetics.
