set 2 MCQ Questions & Answers Detailed Explanation

MOST IMPORTANT general science mcq - 3 EXERCISES

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The following question based on blood transport system topic of general science mcq

Questions : Blood is

(a) Epithelial tissue

(b) Both of the above

(c) Connective tissue

(d) None of the above

The correct answers to the above question in:

Answer: (c)

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Question : 1

A person met with an accident and there is no time to check his blood group, which of the following blood should be given to him?

a) O, Rh+

b) O, Rh–

c) AB, Rh+

d) AB, Rh–

Answer: (b)

Question : 2

An antigen is a substance which

a) Destroys harmful bacteria

b) Triggers the immune system

c) Lowers body temperature

d) Is used as an antidote to poison

Answer: (b)

Question : 3

When a person becomes older, his blood pressure generally

a) Increases

b) Remains the same

c) Decreases

d) Varies widely

Answer: (a)

Question : 4

A person with ‘AB’ blood group is sometimes called a universal recipient because of the

a) Lack of antibodies in his blood

b) Lack of both antigens and antibodies in his blood

c) Lack of antigen in his blood

d) Presence of antibodies in his blood

Answer: (a)

Question : 5

A married couple adopted a male child. A few years later, twin boys were born to them. The blood group of the couple is AB positive and O negative. The blood group of the three sons is A positive, B positive and O positive. The blood group of the adopted son is

a) A positive

b) B positive

c) O positive

d) Cannot be determined on the basis of the given data

Answer: (c)

Question : 6

When there is a decrease in the concentration of oxygen in the blood, the rate of breathing

a) Increases

b) Does not change

c) Decreases

d) First decreases, then increases

Answer: (a)

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