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प्रश्न
Select the correct name from the choices given below for the following case.
A chemical used as a preservative for jams, pickles, etc.
विकल्प
Titanium dioxide
Rayon
Benzoic acid
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उत्तर
Benzoic acid
संबंधित प्रश्न
What is alchemy?
What is ‘Philosopher’s stone’?
___________ deals with the study of matter and the changes it undergoes.
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 |
State the functions of the following basic glass apparatus:
Retort
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 apparatus from A, B, or C for the following functions of the apparatus given.
For gas preparations where heating is required.
Select the correct apparatus from A, B, or C for the following functions of the apparatus given.
A glass apparatus resistant to chemicals, made of pyrex, and used for heating specific liquids.
A philosopher’s stone is not exactly a stone.
