The type of glass used in making prisms and lenses is
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Old-written material, which cannot be read easily can be read by
Lightening cause rainfall because
One fathom is equal to
Water has maximum density at
The colour of Emerald is
According to Daltons atomic theory the smallest particle which can exist independently is
The removal of top soil by water or wind is called
The metal that is present in Photo Films is
The accumulation of stress along the boundaries of lithospheric plates results in which of the following?
The element present in the largest amount in rocks and minerals is
The major ingredient of leather is
The location and energy of an electron in an atom can be specified by
Which of the following is commonly called a polyamide ?
Permanent hardness of water can be removed by adding
The metal used in storage batteries
Pollination by birds is called
Epoxy resins is used as
When a gas is turned into a liquid, the process is called
Apparatus invented by Archimedes is :
Which of the following parts of the sun is easily visible only during a total solar eclipse?
The recent atomic weight scale is based on
Which of the following elements is obtained from sea weeds ?
Liquefied Petroleum gas (LPG) consists of mainly
Polythene is industrially prepared by the polymerisation of
The chemial name of Uria is
Carbon tetrachloride fire extinguisher should not be used in closed room because it produces poisonous…
Which of the following items will be attracted to the north pole of a permanent magnet by a magnet force?
The intencity of Earthquakes is measured on
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