According to Daltons atomic theory the smallest particle which can exist independently is
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The intencity of Earthquakes is measured on
Which of the following is in liquid form at room temperature ?
Which of the following elements is obtained from sea weeds ?
Old-written material, which cannot be read easily can be read by
The recent atomic weight scale is based on
Which of the following characters is not shown by hydrogen
Which of the following items will be attracted to the north pole of a permanent magnet by a magnet force?
The fastest acting enzyme in the biological kingdom is
When a gas is turned into a liquid, the process is called
Permanent hardness of water, due to sulphates of the metal, can be destroyed by the use of
Which of the following parts of the sun is easily visible only during a total solar eclipse?
The solar eclipse occurs when
Water has maximum density at
The colour of Emerald is
The accumulation of stress along the boundaries of lithospheric plates results in which of the following?
Apparatus invented by Archimedes is :
Cell membrane is
The removal of top soil by water or wind is called
Earth's seasons are caused by which of the following?
Pollination by birds is called
The hardest substance available on earth is
Which of the following is the lightest metal ?
The smallest functional and structural unit of kidney is called as
The location and energy of an electron in an atom can be specified by
The metallic constituents of hard water are
Lightening cause rainfall because
In an atomic nucleus, neutrons and protons are held together by
The type of glass used in making prisms and lenses is