UseFull Links
About
Accessbility
Help
Privacy & Terms
Oxygen
Hydrogen
Nitrogen
Carbon dioxide
The gas used to extinguish fire is
The gas which, on heating at high temperatures under high pressure, transforms into a waxy solid is
The graphite rods in the nuclear reactor
The Green House effect is produced due to the presence of excess amount of
The half life period of an isotope is 2 hours. After 6 hours what fraction of the initial quantity of the isotope will be left behind?
The hardened material available on earth is
The hardest form of carbon is
The heat energy produced when the human body metabolises 1 gram of fat is
The heat required to raise the temperature of body by 1 K is called
The high reactivity of fluorine is due to