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प्रश्न
Assertion: Air is a mixture of elements only.
Reason: Only nitrogen, oxygen and neon gases exist in air.
विकल्प
Both assertion and reason are true and reason is the correct explanation of assertion.
Both assertion and reason are true, but reason is not the correct explanation of assertion
Assertion is true but reason is false.
Assertion is false but reason is true.
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उत्तर
Both assertion and reason are true and reason is the correct explanation of assertion.
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संबंधित प्रश्न
Give Two Examples for Each of the Following: Non-metals
Define: Atom
Find the atomicity of the Following molecule:
Calcium Chloride
Fill in the blank
The most abundant element in the atmosphere is _______.
Indicate whether the following statement is true or false:
Ozone is a triatomic molecule
Define the terms elements, compounds & mixtures with a view to show their basic difference.
What are elements? What are they made of?
Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable and are coloured.
Name a non-metal which is required for combustion.
Higher-Order Thinking questions:
Why is hydrogen considered an element?
Reason out
Elements are called semimetals.
