please suggest good investigatory projects in biology and chemistry for class 12 (cbse)

food adulteration

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http://www.cbsezone.com/class-12-biology-project/

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suggest a good topic for cbse class12 biology investigatory project

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please tell investrigatory project on chemistry  for class 12

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I think you could investigate on what would happen to the pigments when plant leaves change their colors during different seasons.

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chemistry project on the topic natural insect repellent

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in biology, I think pollen grain viability ,chromatography of chlorophyll , beneficial microbes are good topics. For chemistry amount of protein present in different milk, insecticides in fruits, amount of acetic acid present in vinegar are good.
hope it helps👍
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  1.  Please suggest a biology investigatory project related to plus2 syllabus.
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preparation of soya beam with curd formation
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Perepration of potash alum
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for biology ; study of coaguable and non coaguable milk proteins
for chem; prep.of potash alum from scrap aluminium
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Histamine is a potent vaaodilator as it contract the smooth muscle in bronchi and gut and relaxes other muscles.. So basically it prevents from tightening of muscles.
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Topics for bio- about any diseases or useful plants......
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Why is it important for skin to be strong and elastic
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Biology- assisted reproductive tract
Chemistry- azodyes
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Hloo
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Yadav
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solve the following equation P by 4 is equal to 5
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