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प्रश्न
Tick (√) the correct alternative from the choice given for the following statement.
The most abundant elements in the universe are
विकल्प
neon and argon
hydrogen and helium
aluminium and copper
oxygen and nitrogen
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उत्तर
hydrogen and helium
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संबंधित प्रश्न
Name: a Metal Which is brittle
Give two examples of Noble gases.
Define:
Atomicity
Define: Formula
Write an answer to the following question in your own words.
Which elements (metals and non-metals), compounds and mixtures do we use in our day-to-day life?
Select the correct answer to the statement given below:
A non-metal which exists in the liquid state.
Give a reason for the following statement :
Brass & bronze are examples of mixtures, while copper sulphate & lead nitrate are examples of compounds.
Match the following:
| 1. | Co2 | a. | Robert Boyle |
| 2. | Sulfur | b. | Making mobile phones |
| 3. | Element | c. | triatomic molecule |
| 4. | Gallium | d. | Polyatomic molecule |
Classify the substances given in Fig. 2.2 into elements and compounds
Name the element which is used for making computer chips.
