Name a food preservative which is most commonly used by food producers.
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Which country is the ninth largest producers of iron ore in the world ?
Canada is ninth largest producer of iron ore in the world by 2015 data .
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Which method is commonly used for improving cattle breeds and why?
Cattle farming is commonly used for improving cattle breeds. The purpose of cattle farming is to increase the production of milk and draught labour for agricultural work. Dairy animals (females)...
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Which one of the following has the largest population in a food chain? (a) Producers (b) Primary consumers (c) Secondary consumers (d) Decomposers
(d) Decomposers Decomposers include micro-organisms such as bacteria and fungi. They form the largest population in a food chain and obtain nutrients by breaking down the remains of dead plants and...
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Secondary producers are (a) Herbivores (b) Producers (c) Carnivores (d) None of the above
(d) None of the above Plants are the only producers. Thus, they are called primary producers. There are no other producers in a food chain.
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Name the antioxidants commonly used to increase the storage of butter.
[Hint : BHA (Butylated Hydroxy anisole).]
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Name two safety measures commonly used in electric circuits and appliances
(i) Electric fuse (ii) Earthing of metal bodies of electrical appliances
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Which among the following are commonly used for making a safety pin?
(d) Steel and plastic
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Which of the following element has the property of diffusing through most commonly used
This element has the property of diffusing through most commonly used laboratory materials such as rubber, glass or plastics (c) He
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Which of the following is commonly used as a vector for introducing a DNA fragment in human lymphocytes ? (1) Retrovirus (2) Ti plasmid
Ans (1) Retrovirus is commonly used as a vector for introducing a DNA fragment in human lymphocytes
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