Advertisements
Advertisements
प्रश्न
Fill in the following blank with suitable words:
Acids have a pH...........than 7.
उत्तर
Acids have a pH less than 7.
APPEARS IN
संबंधित प्रश्न
What colours do the following indicators turn when added to an acid (such as hydrochloric acid)?
litmus
Which is more acidic : a solution of pH = 2 or a solution of pH = 6?
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?
Fresh milk has a pH of 6. When it changes into curd (yogurt), will its pH value increase or decrease? Why?
A farmer has found that the pH of soil in his fields is 4.2. Name any two chemical materials which he can mix with the soil to adjust its pH.
When a solution becomes more acidic, does the pH get higher or lower?
A student prepares solutions of (i) an acid and (ii) a base in two separate beakers. She forgot to label the solutions and litmus paper is not available in the laboratory. Since both the solutions are colourless, how will she distinguish between the two?
How will you prepare a china rose indicator?
A milkman adds a very small amount of baking soda to fresh milk. Why does this milk take a long time to set as curd?
Prepare red cabbage juice by boiling a piece of red cabbage in water. Use it as an indicator and test the acidic and basic solutions with it. Present your observations in the form of a table.
