Teaching BPSC बिहार प्राथमिक (1 to 5) शिक्षक भर्ती 4.0 Mock Test General Science Chemistry

Which of the following is natural acid-base indicator?

I. Litmus

II. Turmeric

1
Only II
2
Only I
3
Neither I nor II
4
More than one of the above ​
5
None of the above
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