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प्रश्न
Select the correct answer from the choice given below.
The negatively charged particles in an atom
पर्याय
protons
neutrons
electrons
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उत्तर
electrons
संबंधित प्रश्न
State four differences between compounds and mixtures.
Give two examples of the following.
Elements which are liquids
Answer the following question:
When iron is mixed with sulphur at room temperature, it does not form a compound. Why?
Fill in the blank
A metal which is a liquid at room temperature is _______.
Match the Columns:
| Column A | Column B | ||
| (a) | Metals | (i) | Non-Reactive |
| (b) | Molecules | (ii) | Brittle |
| (c) | Non-Metals | (iii) | Lustrous |
| (d) | Noble Gases | (iv) | Smallest unit of Compound |
Tick (√) the correct alternative from the choice given for the following statement.
The most abundant elements in the universe are
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 |
Explain the difference between Metals and non-metals.
Give an example of each mixture having the following characteristics. Suggest a suitable method to separate the components of this mixture
Two or more coloured constituents are soluble in some solvent.
Classify the substances given in Fig. 2.2 into elements and compounds
