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401. 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) : Oxytocin causes vigorous contraction of uterus muscles which initiates labour. 2. Reason (R) : The level of the oxytocin reached is at its maximum just before labour.
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:
402. Which is/are the important raw material(s) required in cement industry ?
A. Limestone
B. Gypsum and clay
C. Clay
D. Limestone and clay
Explanation:
403. Consider the following statement regarding biomedication. It involves the use of bacteria and fungi to 1. clean up aquifers 2. clean up toxic dumps 3. clean up oil spills 4. cure bacterial and fungal diseasesOf these, the correct ones are
A. 1 and 2
B. 1 and 3
C. 1, 2 and 3
D. 1, 2, 3 and 4
Explanation:
404. Riveting is done for
A. electroplating
B. fastening and joining
C. anodizing
D. making hole
Explanation:
405. 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) : Detergents can easily remove oil and dirt from soiled graments.Reason (R) : Detergents increase the surface tension of water.
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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