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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-
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