Earth's seasons are caused by which of the following?
The varying amount of sunspot activity
The tilt of the earth's rotation relative to the ecliptic as earth revolves around the sun
The earth's orbit around the sun as an exlipse rather than a circle
The rotation of during a 24-hour day
- Apparatus invented by Archimedes is :
- The metal used in storage batteries
- The accumulation of stress along the boundaries of lithospheric plates results in which of the following?
- When a gas is turned into a liquid, the process is called
- Which of the following is commonly called a polyamide ?
- According to Daltons atomic theory the smallest particle which can exist independently is
- Nitrification means
- The type of glass used in making prisms and lenses is
- Brass gets discoloured in air due to the presence of which gas in air
- Old-written material, which cannot be read easily can be read by
- Pollination by birds is called
- The chemial name of Uria is
- Polythene is industrially prepared by the polymerisation of
- Which of the following is most likely to cause a rise in the average temperature of earth's atmosphere…
- Earth's seasons are caused by which of the following?
- The metallic constituents of hard water are
- Permanent hardness of water, due to sulphates of the metal, can be destroyed by the use of
- The removal of top soil by water or wind is called
- The smallest functional and structural unit of kidney is called as
- Water has maximum density at
- In a certain electronic circuit the output is positive if input 1 is positive and input 2 is zero. If…
- The most important ore of Aluminium is
- The formula of Plaster of Paris is
- Rust is
- Permanent hardness of water can be removed by adding
- Which of the following is the lightest metal ?
- The major ingredient of leather is
- The solar eclipse occurs when
- The intencity of Earthquakes is measured on
- The metal that is present in Photo Films is