Can we separate alcohol dissolved in water by using a separating funnel? If yes, then describe the procedure. If not, explain.
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Describe the method, which can be used to separate two compounds with different solubilities in a solvent S.
Fractional crystallisation is the method used for separating two compounds with different solubilities in a solvent S. The process of fractional crystallisation is carried out in four steps. (a) Preparation of...
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Describe the method, which can be used to separate two compounds with different
Fractional crystallisation is the method used for separating two compounds with different solubilities in a solvent S. The process of fractional crystallisation is carried out in four steps. (a) Preparation of...
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Do you think that friends can influence one to take alcohol/drugs? If yes, how may one protect himself/herself from such an influence?
Yes, friends can influence one to take drugs and alcohol. A person can take the following steps for protecting himself/herself against drug abuse: Increase your will power to stay away from...
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Can an unfertilised, apomictic embryo sac give rise to a diploid embryo? If yes, then how?
Yes, if the embryo develops from the cells of nucellus or integument it will be diploid.
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What is meant by denatured alcohol? What is the need to denature alcohol?
Denatured alcohol is ethyl alcohol which has been made unfit for drinking purposes b,v adding poisonous substances like methanol, pyridine, copper sulphate, etc. Ethanol is an important chemical. It is supplied...
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Name and describe briefly a method which can be helpful in separating a mixture of husk from grains. What is the principle of this method?
Winnowing. This method is based on the principle that the lighter particles are carried away by the wind.
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Name and describe briefly a method which can be helpful in separating a mixture of husk from grains. What is the principle of this method?
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(a) Name a terminal method to prevent pregnancy in humans. (b) Describe the procedure of the terminal method carried in human male and female.
(a) Surgical methods / Sterilisation (b) Males - Vasectomy , a small part of vas deferens is removed or tied up through a small incision on the scrotum Females - Tubectomy ,...
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Vinegar is a solution of (A) 50% – 60% acetic acid in alcohol (B) 5% – 8% acetic acid in alcohol
(C) 5% – 8% acetic acid in water
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Have you ever face shortage of water in your area? If yes, then what was the reason for it.
Yes. Sometimes we face shortage of water in our area. This is due to the cut in supply of water by Jal Board.
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