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प्रश्न
Give reasons for the following
Alchemy was considered a pseudoscience.
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उत्तर
Towards the end of the 17th Century the scientific processes involving modem Chemistry started paving paths and Alchemy today is considered pseudoscience and Chemistry regain its rightful position as a serious scientific field.
संबंधित प्रश्न
Give the basic difference between Inorganic Chemistry and Organic Chemistry.
State why a round bottom flask is preferred to a flat bottom flask – during the preparation of gases in the laboratory.
State the function of
The clamp mounted on the rod of a retort stand
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 water-soluble cleaning agent – not inactivated by hard 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.
For holding washed test tubes
Select the correct apparatus from A, B, or C for the following functions of the apparatus given.
A long glass apparatus closed at one end used for collecting gases.
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.
A philosopher’s stone is not exactly a stone.
