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प्रश्न
Select the correct answer from the choice given below.
An element which is a poor conductor of heat
विकल्प
copper
carbon
aluminum
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उत्तर
carbon
संबंधित प्रश्न
Fill in the blank
Chalk powder dissolved in water is an example of a Chalk powder dissolved in water is an example of a _________.
Tick the most appropriate answer.
How many times is a proton heavier than an electron?
- 1500
- 1800
- 1840
- none of these
Define the term: Element
Give one example for the following types of mixtures:
liquid-gas homogenous mixture
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 |
Indicate whether the following statement is true or false:
Molecules combine to form atoms
Write the names of elements from the following symbol:
Xe
Elements are made up of______ kinds of atoms.
Classify the following as metals, non-metals and metalloids.
Sodium, Bismuth, Silver, Nitrogen, Silicon, Carbon, Chlorine, Iron, Copper
Complete the table by writing the symbols of the following elements
| Element | Symbol |
| Aluminum | Al |
| Nickel | |
| Bromine | |
| Helium | |
| Magnesium |
