Advertisements
Advertisements
प्रश्न
The pH of a cold drink is 5. What will be its action on blue and red litmus solutions?
उत्तर
A cold drink with a pH value of 5 is acidic. Therefore, blue litmus turns red and red litmus remains as it is.
APPEARS IN
संबंधित प्रश्न
Blue litmus paper is dipped in a solution. It remains blue. What is the nature of the solution? Explain.
What colours do the following indicators turn when added to an acid (such as hydrochloric acid)?
litmus
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
The pH of soil A is 7.5 while that of soil B is 4.5. Which of the two soils, A or B, should be treated with powdered chalk to adjust its pH and why?
A beaker of concentrated hydrochloric acid has a pH of 1. What colour will full range universal indicator turn if it is added to this beaker? Is it a strong or a weak acid?
What is a universal indicator? For what purpose is it used?
Name two common antacids.
The colour of methyl orange indicator in a solution is yellow. The pH of this solution is likely to be:
(a) 7
(b) less than 7
(c) 0
(d) more than 7
Methyl orange gives ______ colour in an acidic solution.
Name the acid present in vinegar.