Which of the following is in liquid form at room temperature ?
Sodium
Cerium
Francium
Lithium
- The colour of Emerald is
- Polythene is industrially prepared by the polymerisation of
- The intencity of Earthquakes is measured on
- The metallic constituents of hard water are
- Permanent hardness of water, due to sulphates of the metal, can be destroyed by the use of
- Cell membrane is
- The major ingredient of leather is
- Which of the following is in liquid form at room temperature ?
- Earth's seasons are caused by which of the following?
- The speed of light with the rise in the temperature of the medium
- The location and energy of an electron in an atom can be specified by
- In a certain electronic circuit the output is positive if input 1 is positive and input 2 is zero. If…
- What is the unit for measuring the pitch or frequency of sound ?
- Lightening cause rainfall because
- Epoxy resins is used as
- Which of the following elements is non-radioactive?
- Liquefied Petroleum gas (LPG) consists of mainly
- Which of the following items will be attracted to the north pole of a permanent magnet by a magnet force?
- Quartz crystals normally used in quartz clocks etc. is chemically
- The removal of top soil by water or wind is called
- Rust is
- The solar eclipse occurs when
- When a gas is turned into a liquid, the process is called
- Brass gets discoloured in air due to the presence of which gas in air
- The chemial name of Uria is
- Which of the following characters is not shown by hydrogen
- The fastest acting enzyme in the biological kingdom is
- Bromine is
- The formula of Plaster of Paris is
- Permanent hardness of water can be removed by adding