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प्रश्न
Select the correct name from the choices given below for the following case.
The scientist who formulated the Periodic Table.
विकल्प
John Dalton
Daniel Rutherford
Demitri Mendeleev
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उत्तर
Demitri Mendeleev
संबंधित प्रश्न
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.
Gunpowder is an insecticide:
State the functions of the following basic glass apparatus:
Glass test tube
State the functions of the following basic glass apparatus:
Hard glass boiling tube
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.
Select the correct name from the choices given below for the following case.
Predecessors to the modern Chemist who created the ‘Philosopher's stone’.
Match the apparatus A to J shown below with their correct names 1 to 10 given below:
1. Delivery Tube
2. Pipette
3. Wire gauze
4. Bee-hive shelf
5. Thistle funnel
6. Flat bottom flask
7. Test tube stand
8. Burette
9. Retort
10. Conical flask
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.
