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6. 'Litmus', a natural Indicator is an extract of which of the following?(a) China rose (Gudhal)(b) Beetroot(c) Lichen(d) Blue berries (Jamun)8. A solution changes the colour ofturmeric from yellow to red. Then thenature of solution will be:(a) basic(b) acidic(c) neutral(d) either neutral or acidic9. Which of the following set ofsubstances contain acids?(a) Grapes, lime water(b) Vinegar, milk of magnesia(c) Curd, milk of magnesia(d) Curd, vinegar |
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