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A self-starting siphon
Secure a piece of glass or plastic tube about 2.5 cm in diameter and 8 to 10 cm in length. Fit single end with a one-hole stopper, carrying a short length of glass tube that extends about a centimetre under the stopper on the inner side. Fit the other end of the large tube with a two-hole stopper. By one of the holes in the two-hole stopper place a jet tube which extends up by the larger tube and into the opening of the glass tube in the one-hole stopper. Connect a long rubber tube to the glass tube in the single-hole stopper
Mass communication: The well-known exponent of the role of mass media in development, Dr. Wilbur Schramm, who headed a team of experts to advise the development of infrastr
how is there a chemical change
Under what conditions an element is called an essential element? An element is called as an essential element, if: a. The plant can not complete its life cycle without it
Why did the continents spread apart? This is because of the heat generated from the earth's interior and earthquakes - the convection currents deep within the earth due to the m
Folic acid has the following important physico-chemical properties: a) It is a yellow, spear-shaped crystalline substance. b) The compound is sparingly soluble in water.
what is a soda lime test?
Food Web: Within an ecosystem, there are many different food chains. Some organisms may be involved in several of the food chains at the same time. So a number of food chains
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Determine the Agronomic factors of fertilizers These factors are key to efficient use of fertilizers for crop production and include fertilizer responsiveness of crops, spacing
Personal Protective Devices : We shall now discuss the details of protective devices required for safety in a laboratory. The aim of protective devices is to minimise the risk of
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