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The purest form of water is
The main constituent of biogas is
Aspirin is chemically known as
The most abundant element in the human body is
Which of the following is not a greenhouse gas?
Wax used for making candle is chemically a mixture of
Litmus is obtained from
Vinegar made by fermentation from cane sugar contains
Photooxidation process is initiated by
Which one of the following is used in large quantities in Cement Industry?
Ultraviolet radiation striking the earth is due to the depletion of
Major gaseous pollutant of the thermal power station is
The process of removing calcium and magnesium from hard water is known as
The tip of the match-stick contains
Match the following:
Commercially, sodium bicarbonate is known as
An emulsifier is an agent which
Mortar is a mixture of water, sand and
Carbon monoxide is an inflammable gas. Which one of the following is also inflammable?
Which one of the following metals does not react with water to produce Hydrogen?
Ozone consists of
Which of the following liquids has the least density?
One of the constituents of tear gas is
An atomic clock is based on transitions in
What is the chemical name of vinegar?
Which of the following is not a property of heavy water?
Silver halides are used In photographic plates because they are
Tetra ethyle lead (TEL) is
Curie point is the temperature at which
The isotope used for the production of atomic energy is
Which of the following is not a nucleon?
The material used in the manufacture of lead pencil is
German silver, an alloy, does not contain the metal
Which substance is added to make natural rubber more strong and bouncy?
The noble gas used in radiotherapy is
The chemical(s) most commonly used for cloud seeding or ‘artificial rainmaking’ is/are
White phosphorus is always kept under
Sea water can be purified by the process of
Galena is a mineral of
Magnalium is an alloy of
Galvanization of Iron is carried out using
Cooking gas is a mixture of
Dry powder fire extinguishers contain
Which type of glass is used for making glass reinforced plastic?
Two elements which are used to absorb neutrons to control the chain reaction during nuclear fission are
The most commonly used chemicals in the artificial rainmaking or cloud seeding are
Which of the following can be used to absorb neutrons to control the chain reaction during nuclear fission?
Hydrogen bomb is based on the principle of