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प्रश्न
What is chemistry?
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उत्तर
“The branch of science that deals with the study of the composition and the physical and chemical properties of various forms of matter is called Chemistry.”
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संबंधित प्रश्न
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 |
Write True or False against the following statement.
Chemistry plays an important role in the national economy:
Choose the correct alternative from the choices given below for the following statement:
Which one of the following is a pesticide?
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.
The scientist who formulated the Periodic Table.
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 modern apparatus with an air regulator, used for heating purposes.
Give reasons for the following
Alchemy was considered a pseudoscience.
