215 - UPSC 2007 medical entrance mcqs with answers part 25

The following five (5) items consist of two statements, one labelled as the 'Assertion (A)' and the other as 'Reason (R)'. You are to examine these statements carefully and select the correct answers to these items using the code given below:
Code:
(a) Both A and R are individually true and R is the correct explanation of A
(b) Both A and R are individually 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


121. Assertion (A) :
When ABO and Rh incompatibilities coexist, the baby is likely to have more severe haemolytic disease.
Reason (R)
Both ABO and Rh antibodies cause haemolysis of foetal red blood cells.

answer A . both A and R are correct and R is the correct explanation of A

122. Assertion (A) :
In category III contact with a cat or dog, both antirabies immunoglobulin and vaccine are given immediately.
Reason (R) :
It takes at least 30 days to achieve a maximum level of immunity after vaccination.

answer will post soon

123. Assertion (A) :
As long as baby is less than six months old, a woman can rely on exclusive breast-feeding alone for contraception unless she menstruates.
Reason (R) :
Exclusive breast-feeding alone is the only safe method of contraception during six months after delivery.

answer c . A is true but R is false

124. Assertion (A) :
One of the pathological conditions of acquired coagulopathy is abruptio placentae.
Reason (R) :
In abruptio placentae, thromboplastin is liberated from the retroplacental clot and damaged decidua.

answer a . both A and R are true and R is the correct explanation of A

125. Assertion (A) :
Hypocalcemia is more common among babies fed with cow's milk.
Reason (R) :
Cow's milk contains less concentration of calcium than that of human milk.

answer c . A is true but R is false

Have a look at this page , which beautifully compares both breast milk and cow’s milk and their respective constituents with the values given in tables comparing each other .