Elements, Metals and Compounds

Name the gas used to extinguish fire?
- Carbon dioxide

Mainly which gas is present in gobar gas?
- Methane

Which non -metal remains liquid at room temperature?
- Bromine

Which gas is called laughing gas?
- Nitrous oxide

Name the alloy of iron, chromium and nickel?
- Stainless steel

Which metal is kept under kerosine?
- Sodium

Name the metal used in storage batteries?
- Lead

What is the common name of sodium carbonate?
- Washing soda

Which metal is used in pencils?
- Graphite

Name the metal used as the filament of an electric bulb?
- Tungsten

What is made from the mixture of lime and chlorine?
-Bleaching powder

Name the gas usually filled in the electric bulbs?
- Nitrogen

What is the other name of deuterium oxide?
- Heavy water

Name the gases used in different types of welding?
- Oxygen and acetylene

What is added to remove permanent hardness of water?
- Washing soda

Name the metal present in photo films?
- Silver

Liquefied Petroleum Gas consists mainly which gases?
- Methane, butane and propane

Which element is obtained from sea weeds?
- Iodine

Which gas is used for preparation of soda water?
- Carbon dioxide

Name the element required for conversion of solar energy?
- Silicon