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प्रश्न
Give two examples of the following.
Metals which are soft
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उत्तर
Lead and Sodium
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संबंधित प्रश्न
Give one example for the following types of mixtures:
liquid-gas homogenous mixture
Give two examples of Noble gases.
Tick (√) the correct alternative from the choice given for the following statement.
Gold is used to make jewellery because
Complete the statement given below by filling in the blank with the correct word.
An element is a pure substance which cannot be broken down by physical or _________ methods.
Who are my companions?
| Group 'A' | Group 'B' |
| 1. Stainless steel | (a) Non-metal |
| 2. Silver | (b) compound |
| 3. Bhajani mixture for milling | (c) Mixture |
| 4. Salt | (d) Element |
| 5. Coal | (e) Alloy |
| 6. Hydrogen | (f) Metal |
Select the correct answer to the statement given below:
A compound containing carbon, oxygen and calcium.
Give an example of two liquids that form heterogeneous mixtures.
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.
Oxygen is very essential for us to live. It forms 21% of air by volume. Is it an element or compound?
______ is a mixture of gases.
