- 1. The following are examples of radioactive elements except
A) uranium
B) hydrogen
C) radon
D) carbon 14
- 2. ______ consist of four protons and two electrons
A) omega
B) alpha radiation
C) beta radiation
D) gamma radiation
- 3. Carbon 14 is used in carbon dating to determine ______
A) electron
B) nuclear energy
C) proton
D) age of ancient artifacts
- 4. ______ decay has no mass or charge
A) beta radiation
B) alpha radiation
C) gamma radiation
D) radioactivity
- 5. The following are importance of radioactivity except
A) energy production
B) radiometric dating
C) pollution
D) scientific research
- 6. Direct exposure to high level of radiation can cause ______
A) skin damage
B) none of the above
C) skin lightening
D) skin darkening
- 7. ______ are binary compounds formed when oxygen combines with other elements
A) hydroxide
B) peroxide
C) trioxide
D) oxide
- 8. The following are industrial preparation of oxygen except
A) electrolysis of water
B) decomposition of hydrogen peroxide
C) liquefaction of air
D) fractional distillation of liquid air
- 9. ______is the process of coating iron metal with a layer of zinc(Zn)
A) coating with enamel paint
B) galvanization
C) application of oil
D) electroplating
- 10. ______ is formed after iron particles have been exposed to oxygen and moisture for a long period of time
A) none of the above
B) rusting
C) decomposition
D) burning
- 11. ______ is the process whereby iron is coated with nickel
A) electroplating
B) electrolysis
C) all of the above
D) galvanization
- 12. Na O , Mg O, are ______ oxides
A) amphoteric
B) basic
C) acidic
D) neutral
- 13. ______ oxides are oxides of metals which can react with both acid and alkalis to form salt and water only
A) acidic
B) neutral
C) amphoteric
D) basic
- 14. Aluminum and Zinc are oxides of ______
A) amphoteric oxides
B) basic oxide
C) acidic oxide
D) peroxide
- 15. ______ is a state of absolute well being of an individual as it relates to reproduction and his or her reproductive part
A) pollination
B) reproductive well being
C) reproductive health
D) reproduction
- 16. ______ occurs when pollen from one flower is transferred to the pistils of another flower
A) self pollination
B) cross pollination
C) transportation
D) replication
- 17. ______ can be defined as the spot or point where two or more bones meets
A) joint
B) bone
C) muscle
D) cartilage
- 18. ______ provides support and protection for our organs
A) tendon
B) ligament
C) bones
D) cartilage
- 19. Joints is made up of the following except
A) cartilage
B) bones
C) tendon
D) skull
- 20. ______ occurs when pollen grains from the anther are transferred to the stigma of another flower on the same plant
A) transportation
B) self pollination
C) cross pollination
D) gross pollination
- 21. The followings are types of flower except
A) waterleaf
B) roses
C) hibiscus
D) tulip
- 22. ______ help to cushion and reduce friction between bones
A) ligament
B) tendon
C) bones
D) cartilage
- 23. A pure water has a boiling point of ______ degrees Celsius at standard pressure
A) 100
B) 400
C) 200
D) 300
- 24. ______is a type of simple machine use to fasten two objects together
A) screw
B) lever
C) wheel and axle
D) wedge
- 25. Heat conductors include the following except
A) plastics
B) aluminum
C) mercury
D) copper
- 26. Efficiency of a machine is expressed in ______
A) percentage
B) joules
C) newton
D) seconds
- 27. The unit of heat is ______
A) ohms
B) joules
C) volt
D) Newton
- 28. ______ is a simple machine used in construction sites to raise or lower heavy load
A) wedge
B) pulley
C) inclined plane
D) wheel and axle
- 29. ______ can be stopped through by a few millimeters of aluminum
A) alpha radiation
B) radioactivity
C) beta radiation
D) gamma radiation
- 30. ______ can be defined as the ratio of work output of the machine to the total work input
A) simple machine
B) efficiency
C) mechanical advantage
D) velocity ratio
- 31. Fertilization takes place where
A) Ovaries
B) Fallopian tube
C) Uterus
D) Womb
- 32. ________ produces egg
A) Womb
B) Ovaries
C) Uterus
D) Fallopian tube
- 33. The following are types of joint except______
A) Hind joint
B) Suture joint
C) Ball joint
D) Pivot joint
- 34. Appendicular skeleton has up to _____ bones
A) 126
B) 127
C) 128
D) 129
- 35. Muscles of arms and legs are ______ muscles
A) pelvic
B) Involuntary
C) Joint
D) Voluntary
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