Which instrument is used to measure the oxygen level of the blood?
A. Thermometer
B. Oximeter
C. Spirometer
D. None of these
Which type of vitamin is useful for human body through Sun?
A. Vitamin D
B. Vitamin A
C. Vitamin B
D. None of these
In which of the following country, equator passes?
A. Pakistan
B. Malaysia
C. Kenya
D. None of these
Which of the following lens are useful in microscope?
A. Convex lens
B. Concave lens
C. curved lens
D. None of these
The instrument used to measure the rainfall is:
A. Barometer
B. Hydrometer
C. Convex lens
D. None of these
Which light is more important for photosynthesis?
A. Violet light
B. Red light
C. Green light
D. None of these
Which blood group is rare in the human body?
A. O−
B. AB+
C. AB−            Â
D. None of these
The world is divided into how many time-zones?
A. 12
B. 18
C. 24Â Â Â Â Â Â Â Â Â Â Â Â Â Â
D. None of these
Which of the following is the warmest ocean?
A. Indian ocean
B. Pacific ocean
C. Atlantic ocean
D. None of these