Match column-I with column-II and choose the correct option.
Column I Column II
(a) Statins (i) Yeast
(b) Ethanol (ii) Blood cholesterol lowering agent
(c) Dung (iii) Insect resistant plant
(d) Bt cotton (iv) Biogas
(a) (b) (c) (d)
1. ii i iv iii
2. iii iv i ii
3. i ii iii iv
4. iv ii i iii

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answer is A.

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Detailed Solution

Statins: Statins are a class of drugs used as blood cholesterol-lowering agents. They work by inhibiting the enzyme HMG-CoA reductase, which is involved in cholesterol synthesis. Lowering cholesterol levels can help reduce the risk of cardiovascular diseases.
Ethanol: Ethanol is a type of alcohol and is commonly used as a biofuel and in alcoholic beverages. It is produced through the fermentation of sugars by yeast or other microorganisms.
Biogas: Biogas is a mixture of gases, predominantly methane, produced by the microbial breakdown of organic matter, like cattle dung, in the absence of oxygen. It is a renewable energy source used for heating, cooking, and electricity generation.
Bt Cotton: Bt cotton is a genetically modified variety of cotton that contains genes from the bacterium Bacillus thuringiensis (Bt). These genes produce proteins toxic to certain insect pests, making the cotton plant resistant to insect damage.

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