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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
What kind of experiments did Alchemists do?
What is the main difference between alchemy and chemistry?
Name six such products, which we use daily.
Match the following words in column A with those in column B:
| Column A | Column B | ||
| (a) | Clothing | (i) | toothpaste, cosmetics |
| (b) | Green Revolution | (ii) | nylon, wool |
| (c) | Building Material | (iii) | agriculture |
| (d) | Commodities of daily | (iv) | mortar, cement |
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:
Round bottom flask
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
Select the correct name from the choices given below for the following case.
The branch of Chemistry which includes a study of specific carbon compounds – built up mainly carbon and hydrogen.
Select the correct apparatus from A, B, or C for the following functions of the apparatus given.
A glass apparatus that measures liquid by sucking the liquid at one end up to the marked level and later pouring it out.
