Write the method to produce copper matte from copper pyrites.
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How much copper can be obtained from 100 g of copper sulphate (CuSO4) ?
Answer: We have 1 mole of CuSO4 contains 1 mole of copper. Molar mass of CuSO4 = Atomic mass of [Cu × 1 + S × 1 + O × 4 ] =(63.5) + (32.00)...
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Rose plants produce large, attractive bisexual flowers but they seldom produce fruits.
Failure of fruit formation in rose may be due to several reasons. Some of the likely reasons are: a. Rose plants may not produce viable pollen. b. Rose plants may not have...
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Rose plants produce large, attractive bisexual flowers but they seldom produce fruits
Failure of fruit formation in rose may be due to several reasons. Some of the likely reasons are: a. Rose plants may not produce viable pollen. b. Rose plants may not have...
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What is the composition of copper matte ?
[Hint : Cu2S and FeS]
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(a) You have learnt that plane and convex mirrors produce virtual images of objects. Can they produce real images under some circumstances? Explain.
(a) Yes Plane and convex mirrors can produce real images as well. If the object is virtual, i.e., if the light rays converging at a point behind a plane mirror (or...
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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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Write the chemical formula of hydrated copper sulphate and anhydrous copper sulphate
(i) Hydrated copper sulphate – CuSO4.5H2O Anhydrous copper sulphate – CuSO4 Solutions Activity : (a) Heat a few crystals of copper sulphate in a dry boiling tube. (b) Add 2 – 3 drops of water...
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Name one chief ore each of copper and aluminium. Name the method used for concentration of these two ores.
Metal Chief ore Method of concentration Copper Copper pyrite (CuFeS2) Froth floatation Aluminium Bauxite [AlOx (OH)3–2x] where 0 < x < 1 Leaching
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