Rahul took a turmeric paper and tried to draw flowers on it with the help of cotton buds dipped in solutions P and Q. The flower drawn with solution P was not visible while one drawn with solution Q turned red.
Solutions P and Q could be respectively
A Lime water and lemon juice
B Vinegar and soap solution
C Common salt solution and baking soda
D Both and (C).
Ans 1:
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Ans 5:
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Ans 12:
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Ans 16:
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Ans 18:
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rethish
from
Veltech, Avadi
Class : Class 3
Turmeric indicator remains yellow in acidic (vinegar) and neutral solutions (common salt solution) and turns red in basic solution (soap solution and baking soda).
Ans 19:
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Ans 20:
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Class : Class 7
They have not written: Both B and C in the D option. Whereas, B is important in the D option.