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प्रश्न
Choose the most appropriate answer
A solvent of Iodine is
विकल्प
Water
Kerosene oil
Alcohol
Petrol
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उत्तर
Alcohol
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संबंधित प्रश्न
Name the technique that you use if only the solid component of a solution is required.
Classify the following substances into elements and compounds
Mercury, sulphur, sugar, water, sand, gold, carbon, oxygen, alcohol, iron, marble, baking soda.
Name: Two substances used to make jewellery.
Give one use of the following substance:
Brass
Fill in the blank
A diatomic gaseous element is _______.
Indicate whether the following statement is true or false:
Molecules can exist independently.
Write the names of elements from the following symbol:
Cu
Give an example of two liquids which form homogenous.
The diagram represents fractional distillation for the separation of mixtures. Answer the following :
- Can two immiscible liquids be separated by this process?
- Separation of liquids by this process is based on which physical property?
- If methyl alcohol & water are to be separated, which liquid would remain in flask ‘X’ after condensation.
- Give a reason for the above answer.
- State the purpose of the fractionating column in the apparatus.
Match the following:
| 1. | Co2 | a. | Robert Boyle |
| 2. | Sulfur | b. | Making mobile phones |
| 3. | Element | c. | triatomic molecule |
| 4. | Gallium | d. | Polyatomic molecule |
