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Mcqs MBBS Exams India
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(Single Best Answer) Question 541: Which of the following coagulation factors causes cross linking and stabilization of clot ?
A) Factor IX
B) Thrombin
C) Factor VIII
D) Factor XIII
Answer (Select an option above to get the answer):
(Single Best Answer) Question 542: Which of the following is true regarding the cardiac size in infants and children ?
A) The cardiac size correlates better with height than weight
B) For the same body size, heart weight is greater in girls than in boys
C) For the same body size, heart weight is greater in boys than in girls
D) Heart weight does not vary with gender in infancy and children
Answer (Select an option above to get the answer):
(Single Best Answer) Question 543: Regarding prevention of cardiovascular diseases:
Assertion: Class I interventions have a clear causal relationship with heart disease

Reasoning: Reliable data from randomized clinical trials demonstrate the magnitude of the class 1 interventions benefit as well as its risks and cost

A) Both Assertion and Reason are true, and Reason is the correct explanation for Assertion
B) Both Assertion and Reason are true, and Reason is not the correct explanation for Assertion
C) Assertion is true, but Reason is false
D) Assertion is false, but Reason is true
Answer (Select an option above to get the answer):
(Single Best Answer) Question 544: Regarding polio vaccination:
Assertion: IPV (inactivated polio vaccine) is safe in patients with immunodeficiency
Reason: IPV does not cause vaccine-associated paralytic poliomyelitis.
A) Both Assertion and Reason are true, and Reason is the correct explanation for Assertion
B) Both Assertion and Reason are true, and Reason is not the correct explanation for Assertion
C) Assertion is true, but Reason is false
D) Assertion is false, but Reason is true
Answer (Select an option above to get the answer):
(Single Best Answer) Question 545: Which one of the following is true about the ejection click in valvular pulmonary stenosis ?
A) S1-ejection click interval increases with increasing severity of stenosis
B) S-1 ejection click interval decreases with increasing severity of stenosis
C) S1-ejection click interval remains constant irrespective of the degree of stenosis
D) During inspiration the ejection click is louder
Answer (Select an option above to get the answer):
(Single Best Answer) Question 546: Which of the following is not a continuous murmur ?
A) Venous hum
B) Mammary souffle
C) Portosystemic shunts
D) Severe aortic stenosis murmur
Answer (Select an option above to get the answer):
(Single Best Answer) Question 547: Which of the following is an example of a neuro-endocrine reflex ?
A) Milk-ejection reflex
B) Micturition reflex
C) Stretch reflex
D) Mark time reflex
Answer (Select an option above to get the answer):
(Single Best Answer) Question 548: Which of the following ECG abnormalities can be seen in Ebsteins anomaly:
1) Type B (Wolff - Parkinson White) preexcitation
2) Right bundle branch block
3) Atrial fibrillation
4) Deep Q waves in lateral leads I, AVL, V5, V6
A) Only 1, 2 and 3 are correct
B) Only 1 and 3 are correct
C) Only 2 and 4 are correct
D) Only 4 is correct
Answer (Select an option above to get the answer):
(Single Best Answer) Question 549: Regarding ventricular arrhythmia:
Assertion: Ischemic ventricular tachycardia is initiated and terminated with programmed electrical stimulation
Reason: The most common mechanism of ventricular arrhythmia in ischemic heart disease is reentry
A) Both Assertion and Reason are true, and Reason is the correct explanation for Assertion
B) Both Assertion and Reason are true, and Reason is not the correct explanation for Assertion
C) Assertion is true, but Reason is false
D) Assertion is false, but Reason is true
Answer (Select an option above to get the answer):
(Single Best Answer) Question 550: Severity of mitral stenosis is assessed by which one of the following parameters ?
A) Loud opening snap
B) Length of the murmur
C) Loud S1
D) Splitting of S2
Answer (Select an option above to get the answer):