Advertisements
Advertisements
प्रश्न
Whales come up to the water surface to breathe in oxygen.
विकल्प
True
False
उत्तर
Whales come up to the water surface to breathe in oxygen- True.
APPEARS IN
संबंधित प्रश्न
Statement given below is incorrect. Write the correct statement :
Symbiotic bacteria are present in nodules of cereal plants such as wheat.
Tick (√) the most appropriate answer.
The presence of water vapour in air is essential for :
Statement given below is incorrect. Write the correct statement :
Potassium nitrate on strong heating decomposes into potassium nitrite and nitrogen gas.
Give a reason why water droplets appear on the outer surface of a tumbler containing ice.
Name the following:
A process which removes carbon dioxide from the air.
Give word equation for the following conversion:
Nitrogen dioxide to nitric acid
_____ gas turns lime water milky.
Inhaled air contains a large amount of carbon-di-oxide.
______ present in the air is needed for respiration.
Nitrogen is an essential element present in proteins and nucleic acids which are the building blocks of living things.