what is the answer of this (4p + 2q/5) × (2p - 4q/5)
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Answer:
Step-by-step explanation:
Correct option is
A
neutral solution
Litmus is the most commonly used natural indicator which is extracted from lichens.
It comes in two colours red and blue.
The blue litmus paper turns red in acidic solution whereas the red litmus paper remains unaffected.
The red litmus paper turns blue in basic solution whereas the blue litmus paper will remain unaffected.
When both the papers remain unaffected, the solution is said to be neutral.
Hence, the correct answer is option (A).
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