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Ramesh take a glass of water, added a spoonful of sugar and pinch of salt and also squeezed the juice of a lemon into it. After stirring it properly it was filtered with a strainer. What will be left in the strainer?
Which of the following will not dissolve in water?
When we go up in the sky. The atmospheric pressure will
Match the Column
a) The lithosphere is the upper part of the earth. It includes the crust and the solid portion of the mantle. Lithosphere interacts with atmosphere, hydrosphere, and biosphere and produces the pedosphere (the soil with its biotic and abiotic components). The lithosphere contains rocks, minerals, and soils.
b) The ionosphere is a layer of plasma formed by the ionization of atomic oxygen and nitrogen by highly energetic ultraviolet and x-ray solar radiation. The Ionosphere extends from the middle of the mesosphere up to the magnetosphere.
c) The atmosphere of Earth is the layer of gases, commonly known as air, retained by Earth's gravity, surrounding the planet Earth and forming its planetary atmosphere.
d) The ozone layer or ozone shield is a region of Earth's stratosphere that absorbs most of the Sun's ultraviolet radiation. It contains a high concentration of ozone (O3) in relation to other parts of the atmosphere, although still small in relation to other gases in the stratosphere.
The figure shows a straw placed in a glass of lassi. The level of lassi in the straw rises when air is sucked out. This is because
Atmosphere is the part of earth which consists of
The figure given shows the relative composition of the air. What X and Y represent respectively?
Regarding air, which of the following statement(s) is / are true
(i) Air has no mass
(ii) Air is needed for burning
(iii) Air exerts pressure from all sides and on everything
Which of the following process is component of water cycle?
Air exerts pressure can be shown by which of the following example?
Which of the following picture correctly represents the composition of air? Where P = Nitrogen, Q = Oxygen, R = Inert gas, S = Carbon dioxide
In health care system medicines are injected using syringes or needle. Filling of medicine in syringe is due to
When we flipa glass full of water with a cardboard beneath it, the water doesn't spills out because
Air pressure is the weight of a column of air pushing down on an area. While we cannot feel it, the air is heavy! The weight of the air pushing down on all objects on Earth is the same as the combined weight of three cars! The reason we don’t feel this extreme weight is that the molecules in air push evenly in all directions – up, down, sideways, diagonally. In this experiment, the air pushing up from underneath the paper is strong enough to overcome the weight of the water pushing down on the paper. Because of the air pressure pushing up on the card, the card will stay on the glass and the water will not spill out.
When we put a block of wood in fresh water it floats on it. What will happen if the same block is dropped in water from ocean (Saline) water?