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