Advertisements
Advertisements
प्रश्न
What is the chemical formula of bleaching powder?
उत्तर
The chemical formula of bleaching powder is CaOCl2.
APPEARS IN
संबंधित प्रश्न
A solution reacts with crushed egg-shells to give a gas that turns lime-water milky. The solution contains ______.
Complete and balance the following chemical equations:
NaOH (aq) HCI (aq)→
Complete and balance the following chemical equations:
CuO (s) + HCI (aq) →
What happens when an acid reacts with a metal carbonate? Explain with the help of an example. Write chemical equation of the reaction involved.
Write a balanced chemical equation of the reaction which takes place.
A first-aid manual suggests that vinegar should be used to treat wasp stings and baking soda for bee stings. What does this information tell you about the chemical nature of:
bee stings?
Write the chemical formula of sodium carbonate decahydrate.
The table given below shows the reaction of a few elements with acids and bases to evolve Hydrogen gas.
| Element | Acid | Base |
| A |
✗
|
✗ |
| B |
✓
|
✓ |
| C | ✓ | ✗ |
| D | ✓ | ✓ |
Which of these elements form amphoteric oxides?
A student added 10 g of calcium carbonate in a rigid container, secured it tightly and started to heat it. After some time, an increase in pressure was observed, the pressure reading was then noted at intervals of 5 mins and plotted against time, in a graph as shown below. During which time interval did maximum decomposition take place?
During the preparation of hydrogen chloride gas on a humid day, the gas is usually passed through the guard tube containing calcium chloride. The role of calcium chloride taken in the guard tube is to ______
