Which of the following is in liquid form at room temperature ?
Sodium
Cerium
Francium
Lithium
- The major ingredient of leather is
- Quartz crystals normally used in quartz clocks etc. is chemically
- The marine animal called dugong which is vulnerable to extinction is a/an
- Permanent hardness of water, due to sulphates of the metal, can be destroyed by the use of
- Lightening cause rainfall because
- The hardest substance available on earth is
- The chemial name of Uria is
- Cell membrane is
- Which of the following is the lightest metal ?
- Bromine is
- The element present in the largest amount in rocks and minerals is
- The recent atomic weight scale is based on
- Polythene is industrially prepared by the polymerisation of
- When a gas is turned into a liquid, the process is called
- The type of glass used in making prisms and lenses is
- In a certain electronic circuit the output is positive if input 1 is positive and input 2 is zero. If…
- In an atomic nucleus, neutrons and protons are held together by
- Which of the following is in liquid form at room temperature ?
- Which of the following elements is non-radioactive?
- Which of the following parts of the sun is easily visible only during a total solar eclipse?
- One fathom is equal to
- Epoxy resins is used as
- The metal used in storage batteries
- Old-written material, which cannot be read easily can be read by
- Liquefied Petroleum gas (LPG) consists of mainly
- Which of the following elements is a metal
- The fastest acting enzyme in the biological kingdom is
- Glass is made from the mixture of
- The most important ore of Aluminium is
- The metal that is present in Photo Films is