- 1. ___________ is any of several devices with few or no moving parts that are used to modify motion in order to perform work.
A) Simple machine
B) Work done
C) Force
D) Friction
- 2. One of these is not a type of simple machine.
A) Screw
B) Lever
C) The pulley
D) Pestle
- 3. _______________ is a wheel that carries a flexible rope, cord, cable, chain or belt on its rim.
A) Lever
B) Screw
C) Pulley
D) Wedge
- 4. Which of these is not a type of maintenance of machine?
A) Preventive maintenance
B) Productive maintenance
C) Reactive maintenance
D) Predictive maintenance
- 5. When you throw a ball up into the air, it returns to you because of the Earth's ____________
A) Weight
B) Gravity
C) Force
D) Mass
- 6. The rate of change of velocity of a body falling freely toward the earth is called__________
A) Acceleration due to gravity
B) Mechanical energy
C) Kinetic energy
D) Potential energy
- 7. ______________ is a form of energy generated by vibrating system
A) Sound
B) Drum
C) Hearing
D) Tone
- 8. Which of these is not a property of wave?
A) Wavelength
B) Velocity
C) Cycle
D) Frequency
- 9. A circuit is said to be ___________________ if the source of the electricity is not connected to any external conductor.
A) Close
B) Short
C) Series
D) Open
- 10. Which of these is not a type of electric circuit
A) Open circuit
B) Closed circuit
C) Short circuit
D) Long circuit
- 11. One egg is released every month and travel down a very narrow tube called --------
A) Uterus
B) Womb
C) Cervix
D) Oviduct
- 12. The sperm cells are suspended in a liquid called
A) Scrotum
B) Vas deference
C) Seminal fluid
D) Fallopian tube
- 13. The union of a sperm with an ovum is called ----------
A) Zygote
B) Fertilisation
C) Gametes
D) Gestation period
- 14. Vertebrates have skeletons inside their body called -------
A) Tendons
B) Endoskeletons
C) Bones
D) Cartilage
- 15. Immovable joints of the skull are called --------
A) Suture
B) False ribs
C) Craniale
D) Ligaments
- 16. The knee cap is called --------
A) Tarsals
B) Patella
C) Condyles
D) Fibula
- 17. ---------- joints allows movement in one plane or direction only .
A) Hinge joint
B) Pivot joint
C) Ball and socket
D) Gliding joint
- 18. One of the following is not a type of movable joint.
A) Ball and socket joint
B) Coccyx joint
C) Hinge
D) Pivot
- 19. The longest bone in the body is known as -------------
A) Femur
B) Ulna/radius
C) Humerus
D) Tibia/fibula
- 20. There are -------- bones in human body.
A) 307
B) 206
C) 150
D) 300
- 21. One of the following is not a radioactive element.
A) Uranium -325
B) Cobalt-60
C) Sulphur -35
D) Coral-66
- 22. The following are electromagnetic radiations except ---------
A) Omega
B) Alpha
C) Beta
D) Gamma
- 23. One of the following electromagnetic radiations causes cancer and genetic mutation is-------
A) Beta
B) Alpha
C) Gamma
D) Omega
- 24. The radioactive element used is agriculture is -----
A) Calcium 45
B) Cobalt 60
C) Carbon 14
D) Uranium 325
- 25. Oxygen is produced in the laboratory by thermal decomposition of one of the following.
A) Potassium trioxochlorate (v)
B) Calcium trioxochlorate (v)
C) Calcium tetraoxochlorate (v)
D) Potassium tetraoxochlorate (v)
- 26. Oxygen is the first element in ----------
A) Group VI
B) Group V
C) Group IV
D) Group VII
- 27. Oxygen in a free state constitutes about ------------ by volume of the atmospheric air.
A) 78%
B) 1%
C) 55%
D) 21%
- 28. Oxygen in a free state constitutes about ------------ by mass of earth's crust, the oceans and the air.
A) 0.03%
B) 21%
C) 55%
D) 78%
- 29. One of the following is not a use of oxygen.
A) Density is about same as that of air
B) Slightly soluble in water
C) Liquefies at 183°c
D) Neutral to litmus
- 30. One of the following is not a reason for skill acquisition
A) For training and practices
B) Job opportunities
C) Self employment and fulfilment
D) To remain afloat in a competitive economy
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