The marine animal called dugong which is vulnerable to extinction is a/an
Amphibian
Shark
Bony fish
Mammal
- The element present in the largest amount in rocks and minerals is
- Carbon tetrachloride fire extinguisher should not be used in closed room because it produces poisonous…
- Pollination by birds is called
- The intencity of Earthquakes is measured on
- Polythene is industrially prepared by the polymerisation of
- Cell membrane is
- The metallic constituents of hard water are
- Which of the following elements is non-radioactive?
- The removal of top soil by water or wind is called
- Bromine is
- The solar eclipse occurs when
- The location and energy of an electron in an atom can be specified by
- The type of glass used in making prisms and lenses is
- Which of the following is the lightest metal ?
- Lightening cause rainfall because
- The recent atomic weight scale is based on
- One fathom is equal to
- Permanent hardness of water can be removed by adding
- The accumulation of stress along the boundaries of lithospheric plates results in which of the following?
- Quartz crystals normally used in quartz clocks etc. is chemically
- The most important ore of Aluminium is
- When a gas is turned into a liquid, the process is called
- The Panda belongs to the same family as that of
- Apparatus invented by Archimedes is :
- Which of the following elements is obtained from sea weeds ?
- Rust is
- The fastest acting enzyme in the biological kingdom is
- Permanent hardness of water, due to sulphates of the metal, can be destroyed by the use of
- The oxide of Nitrogen used in medicine as anaesthetic is
- The property of a substance to absorb moisture from the air on exposure is called