Q. The vital constituent of blood that helps in clotting is -
1) Platelets
2) Haemoglobin
3) Plasma
4) Serum
Q. Which of the following animals can hear ultrasonic sound?
1) Cat
2) Rat
3) Bat
4) Squirrel
Q. Which part of the human body is highly affected by the nuclear radiation first?
1) Bone marrow
2) Skin
3) Lungs
4) Eyes
Q. If someone damages his or her eyes in an accident, then he or she should consult an -
1) Ophthalmologist
2) Optician
3) Orthopedic
4) Oncologist
Q. When a patient's blood pressure is taken, the pressure exerted by blood on the walls of the blood vessel is measured. At what stage is this pressure measured?
1) When the heart sends out oxygenated blood to the body parts
2) When deoxygenated blood goes into the heart
3) At both the stage
4) At the in-between stage
Q. What is an ecosystem?
1) The unit of man and all living being which interact with each other
2) The unit comprised of man, other living beings and their environment
3) The unit comprised of man, other living beings and their environment
4) That part of the Earth and the atmosphere where living beings are found
Q. Malaria affects lakhs of Indians every year. Which part of the body is damaged by this disease?
1) Heart
2) Lungs
3) Spleen
4) Liver
Q. The image formed by an object on the retina of the human eye is -
1) Real and iverted
2) Real and upright
3) Virtual and inverted
4) Virtual and upright
Q. Dengue is caused by -
1) Virus
2) Deficiency of Vitamin D
3) Deficiency of Fe
4) None of these
Q. In which organ of the body is the red blood corpuscle made?
1) Liver
2) Bone marrow
3) Kidneys
4) Heart
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