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प्रश्न
Choose the correct alternative from the choices given below for the following statement:
Which one of the following is a pesticide?
पर्याय
benzoic acid
aldrin
sugar
gunpowder
उत्तर
aldrin
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संबंधित प्रश्न
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 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
State the method used for collecting the following gas:
Oxygen – a gas slightly soluble in water.
‘Alchemists are older words for Chemists’. Discuss the statement in brief.
In the medieval ages – the philosopher’s stone was connected with all transformations. Explain.
Give a comparative difference between soaps and detergents. Give a reason. why detergents have an advantage over soap.
State what are – ‘stain removals’. Name three important stain removers & give their prime functions.
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 glass apparatus that measures liquid by sucking the liquid at one end up to the marked level and later pouring it out.
