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416. 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.
A. Both A and R are true and R is the correct explanation of A.
B. Both A and R are true but R is not the correct explanation of A.
C. A is true but R is false.
D. A is false but R is true.
Explanation:
417. 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 ?Assertion (A) : Noise pollution is unwanted accumulation of noise in the atmosphere.Reason (R) : It interferes with communication.
A. Both A and R are true but R is the correct explanation of A.
B. Both A and R are true but R is not the correct explanation of A.
C. A is true but R is false.
D. A is false but R is true.
Explanation:
418. The most contractile part of the human body is
A. skin
B. stomach
C. iris
D. urinary bladder
Explanation:
419. Which of the following when taken by pregnant women, is found to be the cause of deformed children ?
A. Glycerol
B. Xylidine
C. Thalidomide
D. None of these
Explanation:
420. 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 ?Assertion (A) : A refrigerator can cool a room if the door of the refrigerator is kept open and is placed in the middle of the room.Reason (R) : Refrigerator cools the room by taking heat away from it.
A. Both A and R are true but R is the correct explanation of A.
B. Both A and R are true but R is not the correct explanation of A.
C. A is true but R is false.
D. A is true but R is false.
Explanation:
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