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प्रश्न
State the function of
The wooden handle at the end of the test tube holder.
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उत्तर
The wooden handle at the end of the test tube being a poor conductor of heat makes holding the test tube holder easy.
संबंधित प्रश्न
What kind of experiments did Alchemists do?
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:
Write True or False against the following statement.
Enzymes secreted by our body are chemicals:
‘Alchemists are older words for Chemists’. Discuss the statement in brief.
Select the correct name from the choices given below for the following case.
The scientist who formulated the Periodic Table.
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 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 rectangular mesh with asbestos at its centre kept for initiating even distribution of heat to the bottom of the apparatus.
