Which of the following would turn a turmeric paste red?

(A) Nitric acid
(B) Ketchup
(C) Aerated drink
(D) Baking soda

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Question 3

Turmeric is a natural indicator. On adding its paste to acid and base separately, which colours would be observed
(a) Yellow in both acid and base.
(b) Yellow in acid and red in base.
(c) Pink in acid and yellow in base.
(d) Red in acid and blue in base.

Write the molecular formulate for the following compo unds and name of the elements present.

(a) Baking soda (b) Common salt

Q. Baking soda is used in small amount in making bread and cake. It helps to make these soft and spongy. An aqueous solution of baking soda turns red litmus blue. It is also used in soda acid fire extinguisher.
Use this information to answer the following questions:
(a) How does baking soda help to make cakes and bread soft and spongy?
(b) How does it help in extinguishing fire?
(c) Is the pH value of baking soda solution lesser than or greater than 7?

Q. If a small amount of baking soda solution is added to turmeric paste, the colour of the paste will turn .

Question 11

Which of the following is an acid-base indicator?
(a) Vinegar
(b) Lime water
(c) Turmeric
(d) Baking soda

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Which of the following would turn a turmeric paste red? (A) Nitric acid (B) Ketchup (C) Aerated drink (D) Baking soda

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Which of the following would turn a turmeric paste red?

(A) Nitric acid
(B) Ketchup
(C) Aerated drink
(D) Baking soda