Advertisements
Advertisements
प्रश्न
A solution reacts with zinc granules to give a gas which burns with a 'pop' sound. The solution contains:
(a) Mg(OH)2
(b) Na2CO3
(c) NaCl
(d) HCl
उत्तर
HCl
Zinc granules react with HCl to give hydrogen gas, which burns with a ‘pop’ sound.
APPEARS IN
संबंधित प्रश्न
From which plant is litmus paper or litmus solution obtained?
- Moss
- Rose
- Hibiscus
- Lichen
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.
Write a word equation and then a balanced equation for the reaction taking place when:
Dilute sulphuric acid reacts with zinc granules.
What happens when an acid reacts with a metal oxide? Explain with the help of an example. Write a balanced equation for the reaction involved.
What ions are present in the solutions of following substances? (write the symbols only)
Sulphuric acid
What does a soda-acid type fire extinguisher contain? How does it work? Explain the working of a soda-acid fire extinguisher with the help of a labelled diagram.
Name a metal compound which has detergent properties (cleansing properties).
Acids turn blue litmus paper to ______.
Lime water reacts with chlorine to form:
Calcium phosphate is present in tooth enamel. Its nature is