Advertisements
Advertisements
Question
Assertion: Air is a mixture of elements only.
Reason: Only nitrogen, oxygen and neon gases exist in air.
Options
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.
Solution
Both assertion and reason are true and reason is the correct explanation of assertion.
APPEARS IN
RELATED QUESTIONS
Name the substance you will add to speed up sedimentation.
Tick the most appropriate answer.
How many times is a proton heavier than an electron?
- 1500
- 1800
- 1840
- none of these
Name: a Liquid Metal
Give two applications of chromatography.
Select the correct answer from the choice given below.
The negatively charged particles in an atom
Write the names of elements from the following symbol:
Xe
An element is sonorous and highly ductile. Under which category would you classify this element? What other characteristics do you expect the element to possess?
______ is a mixture of gases.
Give an account of elements known to us.
Reason out
Elements are called semimetals.
