81.Given below are two statements, labeled as Assertion (A) and Reason (R). In the context of the two statements, which of the following is correct ? 1. Assertion (A) : Food materials should not be soaked in water for a long time. 2. Reason (R) : Washing leads to loss of vitamin B and vitamin C from teh foodstuff.

82.Which of the following are pollutants that a traffic constable is likely to inhale ? 1. Carbon monoxide 2. Lead 3. Sulphur dioxide 4. Oxides of nitrogen

83.Given below are two statements, labeled as Assertion (A) and Reason (R). In the context of the two statements, which of the following is correct ? 1. Assertion (A) : The use of chlorofluoro carbons is banned throughout the world now-a-days. 2. Reason (R) : These chemicals cause skin cancer.

84.Given below are two statements, labeled as Assertion (A) and Reason (R). In the context of the two statements, which of the following is correct ? 1. Assertion (A) : Clothes are not washed properly in hard water. 2. Reason (R) : Hard water contains many minerals.

85.Given below are two statements, labelled as Assertion (A) and Reason (R). In the context of the two statements, which of the following is correct ?Assertion (A) : Heating vegetable oils with caustic soda gives soap and glycerine.Reason (R) : Vegetable oils contain salts of fatty acid.