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प्रश्न
In basic solution turmeric indicator paper changes from yellow to _______.
पर्याय
blue
green
yellow
red
उत्तर
In basic solution turmeric indicator paper changes from yellow to red.
APPEARS IN
संबंधित प्रश्न
Name two olfactory indicators?
The indicators which turn red in acid solution are:
(a) turmeric and litmus
(b) phenolphthalein and methyl orange
(c) litmus and methyl orange
(d) phenolphthalein and litmus
What is the pH of a neutral solution?
Two solutions X and Y are tested with universal indicator. Solution X turns orange whereas solution Y turns red. Which of the solutions is a stronger acid?
Fill in the following blank with suitable words:
Acids have a pH...........than 7.
What is a universal indicator? For what purpose is it used?
Fresh milk has a pH of 6. When milk changes into curd, the pH value will:
(a) become 7
(b) become less than 6
(c) become more than 7
(d) remain unchanged
Hibiscus flower is an example for natural indicator.
Add a few drops of hibiscus indicator to the soap solution. What do you observe?
Using the knowledge of acids and bases, write a secret message with the help of baking soda and beet root. Explain how it works.
(Hint: Prepare baking soda solution in water. Use this solution to write the message on a sheet of white paper with a cotton bud. Rub a slice of fresh beetroot over the message.)
