Advertisements
Advertisements
प्रश्न
Complete and balance the following chemical equation.
CaO + H2O → ____________
उत्तर
CaO + H2O → Ca(OH)2
APPEARS IN
संबंधित प्रश्न
Name and briefly explain four ways by which pollution of air caused by humans is minimised.
Give reason:
When water is heated, we see bubbles rising up.
Fill in the blanks
Oxygen is used in ___________the food to get _______.
With the help of a labeled diagram, describe a simple experiment to show the presence of oxygen and nitrogen in air using a piece of white phosphorus.
Name the following:
The component of air which does not support combustion.
State whether the following statement is ‘true’ or ‘false’. If false write the correct statement.
The mesosphere in the atmosphere, contains most of the air, fit for respiration
What is the presence of harmful substance in the air called?
The air in coastal areas have more oxygen.
Explain the following observations very briefly
An empty glass in fact is not empty.
On a Sunday morning Paheli’s friend visited her home. She wanted to see some flowering plants in the nearby garden. Both of them went to the garden. While returning from the garden they also observed some flowering plants on the road side. But to their surprise they found that the leaves and flowers of these roadside plants were comparatively very dull. Can you help them to know why?