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Impure camphor is purified by
Ozone consists of
The cross section of a chisel is usually
The stones formed in human kidney consist mostly of
Which among the following is homologous to a human arm?
Which of the following metals is in a liquid state at normal room temperature?
A colloidal system in which a liquid is dispersed in a liquid is called
Conduction, is the process of heat transfer in which :
In a barometer, mercury is preferred over water because
Ozone hole refers to
The damage of the human body due to radiation (X-rays or grays etc,) is measured in:
The strongest force in nature is
Which among the following is the most common media of pollination in flowers without petals?
Which of the following metals is used in spacecraft to tolerate high temperatures?
A convex lens and concave lens each having the same focal length of 25 cm, are put in contact to form a combination of lenses. The power (in dioptres) of the combination is :
Consider the following organisms 1. Agaricus 2. Nostoc 3. Spirogyra Which of the above is/ are used as biofertiliser/biofertilisers?
In a chemically pure state, diamonds are
Ozone layer above earth’s atmosphere will
The danger signals are red while the eye is more sensitive to yellow because
The substance used to attract the gypsy moth is
Which among the following is true attribute to Polar bear?
Which of the following metals remain in liquid for under normal conditions?
A convex lens of glass has power P in air. If it is immersed in water its power will be :
Contact force is another name for
In a diesel engine the high temperature needed to ignite the fuel is achieved by-
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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