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प्रश्न
Indicate whether the following statement is true or false:
Molecules can exist independently.
पर्याय
True
False
उत्तर
True
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संबंधित प्रश्न
Is food that we eat a mixture ?
Why is it necessary to separate the constituents of a mixture.
Tick (√) the correct alternative from the choice given for the following statement.
The most abundant elements in the universe are
Tick (√) the correct alternative from the choice given for the following statement
A non-metal which is a good conductor of electricity.
Tick (√) the correct alternative from the choice given for the following statement
A gaseous non-metal.
Select the correct answer from the choice in the bracket.
The positively charged particle of an atom.
Give a reason for the following statement:
Components in a mixture are present in varying proportions and not in a fixed proportion.
Give a reason for the following statement :
The filter paper made into a cone & placed in a funnel for filtering out the solid particles in a solid-liquid mixture should be moistened before placing it.
Assertion: Air is a mixture of elements only.
Reason: Only nitrogen, oxygen and neon gases exist in air.
Match the following:
| 1. | Co2 | a. | Robert Boyle |
| 2. | Sulfur | b. | Making mobile phones |
| 3. | Element | c. | triatomic molecule |
| 4. | Gallium | d. | Polyatomic molecule |
