Carbon tetrachloride fire extinguisher should not be used in closed room because it produces poisonous glass called
None of these
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The chemial name of Uria is
Apparatus invented by Archimedes is :
The recent atomic weight scale is based on
Which of the following parts of the sun is easily visible only during a total solar eclipse?
Which of the following elements is non-radioactive?
The location and energy of an electron in an atom can be specified by
The intencity of Earthquakes is measured on
Epoxy resins is used as
Which of the following is in liquid form at room temperature ?
Which of the following elements is obtained from sea weeds ?
The metal used in storage batteries
Which of the following is commonly called a polyamide ?
The fastest acting enzyme in the biological kingdom is
What is the unit for measuring the pitch or frequency of sound ?
The property of a substance to absorb moisture from the air on exposure is called
Cell membrane is
Which of the following is most likely to cause a rise in the average temperature of earth's atmosphere…
The element present in the largest amount in rocks and minerals is
The speed of light with the rise in the temperature of the medium
One fathom is equal to
The metallic constituents of hard water are
Brass gets discoloured in air due to the presence of which gas in air
The removal of top soil by water or wind is called
The solar eclipse occurs when
The type of glass used in making prisms and lenses is
Carbon tetrachloride fire extinguisher should not be used in closed room because it produces poisonous…
The Panda belongs to the same family as that of
Old-written material, which cannot be read easily can be read by
Liquefied Petroleum gas (LPG) consists of mainly
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