Advertisements
Advertisements
प्रश्न
Multiple choice:
A reaction of a type: AB + CD → AD + CD, involves
विकल्प
No chemical change
Decomposition of AB and CD
Exchange of ions of AB and CD
Combination of AB and CD
Advertisements
उत्तर
Exchange of ions of AB and CD
APPEARS IN
संबंधित प्रश्न
How is a strong electrolyte different from a weak electrolyte?
Fill in the blank:
During a chemical reaction transfer of ________ takes place.
Give an example of a reaction where the following are involved:
Close contact
Select the correct answer for the following options:
The gas obtained when potassium chlorate is heated in the presence of a catalyst.
Explain the Silver nitrate solution is kept in coloured reagent bottles in the laboratory.
Name the solid residual product formed reaction and state its colour during – thermal decomposition of the following substance.
Lead nitrate.
Which of the following is not an “element + element → compound” type reaction?
The water we drink is a combination of hydrogen and oxygen.
Give an example of a chemical reaction for the following situation:
A change in colour is observed
Match the following:
| Column I | Column II | ||
| 1. | Burning of coal | a. | Rusting |
| 2. | Painting of a surface | b. | Evaporation |
| 3. | Dipping iron in the water | c. | Chemical change |
| 4. | Salt from seawater | d. | Prevention of rusting |
