The removal of top soil by water or wind is called
Soil erosion
Soil wash
Silting of soil
Soil creep
- Which of the following is the lightest metal ?
- Earth's seasons are caused by which of the following?
- Which of the following is in liquid form at room temperature ?
- Nitrification means
- The most important ore of Aluminium is
- The hardest substance available on earth is
- The fastest-running terrestrial animal is
- The chemial name of Uria is
- The oxide of Nitrogen used in medicine as anaesthetic is
- Pollination by birds is called
- Polythene is industrially prepared by the polymerisation of
- Permanent hardness of water, due to sulphates of the metal, can be destroyed by the use of
- Glass is made from the mixture of
- The metal used in storage batteries
- The speed of light with the rise in the temperature of the medium
- Which of the following is most likely to cause a rise in the average temperature of earth's atmosphere…
- Water has maximum density at
- The formula of Plaster of Paris is
- Old-written material, which cannot be read easily can be read by
- The recent atomic weight scale is based on
- The fastest acting enzyme in the biological kingdom is
- The marine animal called dugong which is vulnerable to extinction is a/an
- Which of the following elements is a metal
- Quartz crystals normally used in quartz clocks etc. is chemically
- Carbon tetrachloride fire extinguisher should not be used in closed room because it produces poisonous…
- Epoxy resins is used as
- Liquefied Petroleum gas (LPG) consists of mainly
- Brass gets discoloured in air due to the presence of which gas in air
- The solar eclipse occurs when
- The smallest functional and structural unit of kidney is called as