Advertisements
Advertisements
प्रश्न
Give reason:
Aquatic animals and plants are able to survive in the matter.
उत्तर
Aquatic animals and plants use oxygen dissolved in water and survive.
APPEARS IN
संबंधित प्रश्न
Tick (√) the most appropriate answer.
The humans pollute the air by :
Classify Calcium oxide. Also give a balanced equation to prepare it.
Complete and balance the following equation
CaO + H2O →
Statement given below is incorrect. Write the correct statement :
Potassium nitrate on strong heating decomposes into potassium nitrite and nitrogen gas.
Write fully balanced equation for the following :
Ca(OH)2 + CO2 →
Give reason:
When water is heated, we see bubbles rising up.
State whether the following statement is ‘true’ or ‘false’. If false write the correct statement.
Carbon dioxide, water vapour and energy in the form of heat are evolved during respiration.
Give word equation for the following conversion:
Nitric acid to soluble nitrates in the soil
The amount of water vapour in the air is more in windy places than in other areas.
When cooled to -57°C, gaseous carbon-di-oxide becomes a liquid.