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Ozone layer in the outer atmosphere helps us in
The deficiency of vitamin A cause
The substance which does not expand on going from liquid state to solid state is
Which among the following is used as a magnifying glass?
Which of the following method will be employed to test the hardness of water
A current loop in a magnetic field :
Containers for carrying strong acids are made of
In a filament type light bulb most of the electric power consumed seems as
Ozone saves the biosphere by absorbing high energy radiations called _.
The substrate of photorespiration is
Which among the following nitrogenous wastes requires the least water for its excretion?
Which of the following mineral does not contain oxygen
A current of 5 A is passing through a metallic wire of cross-sectional area 4 × 10-6 m2. If the density of the charge carriers in the wire is 5 × 1026 m-3, the drift velocity of the electrons is :
Contraceptive pills in the market contain
Paleontology is a branch of science that deals with the
The degree of dissociation of an electrolyte depends on
The sun is seen before the actual sunrise because of
Which of the following name of scientist and their field of work is correctly matched?
A current of 5 A is passing through a metallic wire of cross-sectional area 4 × 10^-6 m². If the density of the charge carriers in the wire is 5 × 10^26 m^-3, the drift velocity of the electrons is :
Convection occours out of the followings-
In a medium heat flows by the actual movement of the particles of the medium. This process of heat transmission is known as
Paper is manufactured by
The density of a gas is max. at
Which among the following two gases contribute to begin the formation of stars?
Which of the following nitrogenous base is present in DNA, but not in RNA?
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