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Acid solution weathering
Weathering is accelerated by the presence of the hydrogen ions in water. Rain water dissolves CO2 from air to form carbonic acid, H2CO3. When this acid comes in contact with rocks that contain lime, soda and potash, the minerals containing calcium, magnesium and potassium in these rocks chemically change into carbonates and dissolve in rain water. For example calcite in limestone reacts as given below:
Describe the formation of igneous and metamorphic rocks? Ans) Igneous rocks are formed by volcanic action and due to of volcanic activity. Metamorphic rock is formed by a co
how many types of heterotrophic nutrition in plants?..
Pollution Now-a-days, you might have heard every one talking about pollution. What does pollution mean? Pollution is the addition to the environment (air, water, soil) of subst
Making a 'gusher' with compressed air Secure a large narrow-necked bottle like as is used for soda water. Place a single-hole stopper in the bottle. By the stopper put a 10- cm
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Flammable Liquids : Previously, the word flammable has the same meaning as inflammable. Flammable liquids are those liquids or mixtures of liquids or liquids containing solids in
Ship-building: The shipbuilding industry in the seventeenth century. witnessed far-reaching changes that mainly resulted from imitating European techniques. The Indian sea-g
What is the difference among the geoid and the surface of the earth? The geoid is an visualize surface that equal with the average (mean) sea level around the world. Thus, i
Conducting experiments on animals (i) The qualifications or experience of the person(s) performing experiments on animals. (ii) Comfortable conditions provided, and animals
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