Advertisements
Advertisements
प्रश्न
Which of the following statements is true for acids?
विकल्प
Bitter and change red litmus to blue
Sour and change red litmus to blue
Sour and change blue litmus to red
Bitter and change blue litmus to red
उत्तर
Sour and change blue litmus to red
Explanation -
Both are the characteristics of acids.
APPEARS IN
संबंधित प्रश्न
What do we observe on pouring acetic acid on red and blue litmus papers?
(A) Red litmus remains red and blue litmus turns red.
(B) Red litmus turns blue and blue litmus remains blue.
(C) Red litmus turns blue and blue litmus turns red.
(D) Red litmus becomes colourless and blue litmus remains blue.
What happens when an acid reacts with a metal carbonate? Explain with the help of an example. Write chemical equation of the reaction involved.
What ions are present in the solutions of following substances? (write the symbols only)
Sulphuric acid
Wasp stings can be treated with:
(a) baking soda
(b) vinegar
(c) washing soda
(d) milk of magnesia
State the common and chemical names of the compound formed when plaster of Paris is mixed with water.
When _______________ is passed through fresh lime water, it turns milky.
If a few drops of a concentrated acid accidentally spills over the hand of a student, what should be done?
In the following schematic diagram for the preparation of hydrogen gas as shown in the figure, what would happen if following changes are made?
- In place of zinc granules, same amount of zinc dust is taken in the test tube
- Instead of dilute sulphuric acid, dilute hydrochloric acid is taken
- In place of zinc, copper turnings are taken
- Sodium hydroxide is taken in place of dilute sulphuric acid and the tube is heated.
A salt may be ______.
Consider the following salt:
\[\ce{ZCO3}\]
What would be the change in colour in blue litmus if \[\ce{ZCO3}\] is added to it and Z is potassium?
