651. What is the SI unit of charge?
A. Ampere
B. Coulomb
C. Ohm
D. Volt
E. None of these
652. Which of the following device converts chemical energy into electrical energy?
A. motor
B. generator
C. moving-coil meter
D. battery
E. None of these
653. Which gas is used in a refrigerator to cool water?
A. Nitrogen
B. Carbon dioxide
C. Methane
D. Ammonia
E. None of these
654. The average adult has a blood volume of approximately how many liters?
A. 9
B. 5
C. 8
D. 7
E. None of these
655. Which is the most abundant element in the universe?
A. Oxygen
B. Hydrogen
C. Carbon Dioxide
D. Silicon
E. None of these
656. Which is the most abundant element in the Earth’s crust?
A. Oxygen
B. Hydrogen
C. Carbon Dioxide
D. Silicon
E. None of these
657. Every day the human body breathes in how many liters of air?
A. 2,000 to 8,000
B. 10,000 to 15,000
C. 15,000 to 20,000
D. 23,000 to 28,000
E. None of these
658. Deficiency of Vitamin-D results in which of the following problems?
A. night blindness
B. rickets
C. scurvy
D. hair fall
E. None of these
659. What is the nature of Sound waves?
A. Transverse
B. Electromagnetic
C. Longitudinal
D. none of these
E. None of these
660. What is the lifespan of White Blood Cells?
A. 1 – 5 days
B. 3 – 7 days
C. 4 – 8 days
D. 5 – 21 days
E. None of these