1. _________are substances having a sour
taste.
2. Substances that are bitter in taste and soapy to touch are_____ in nature.
3. Chemicals that are used to check acidic or basic nature of substances are called_______
4. Acids turn_____litmus to____
5. Turmeric paste and China rose are also______indicators. Turmeric paste remains yellow in acidic solutions but turns to________ in basic solutions.
6. _____substances do not affect the colour of indicators.
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a) bases
b) basic
c) indicators
d) blue to red
e) natural, red
f) neutral
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Answer:
(1) lemon,guava
(2) bases
(3) litmus
(4) blue to red
(5) natural,red
(6) substance
Explanation:
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