1. The ozone layer absorbs ---
a) infrared radiation
b) ultraviolet radiation
c) X-rays
d) gamma rays
2. Decibel is the unit used for measuring ---
a) Speed of light
b) Intensity of light
c) Intensity of sound
d) Radiowave frequency
3. Air bubble in water behaves as a ---
a) divergent lens
b) convergent lens
c) plane glass
d) None of these
4. Oxygen and ozone are ---
a) allotrpes
b) isomers
c) isotops
d) isobars
5. Which of the following is an element ---
a) alumina
b) brass
c) graphite
d) silicon
6. A device used for the measurement of radioactivity is ---
a) mass spectrometer
b) cyclotron
c) nuclear reactor
d) G.M. counter
7. Yeast is an important source of ---
a) Vitamin C
b) Protein
c) Vitamin B
d) Invertase
8. Bat can fly in dark because they ---
a) have strong wings
b) have sharp eyes
c) produce ultrasonic waves
d) are natural
9. The image formed on the retina of a human eye is ---
a) Virtual and inverted
b) Virtual and erect
c) Real and erect
d) Real and inverted
10. Which of the following book is most accepted world wide?
a) Philosophic zodogique
b) Origin of life
c) Origin of species
d) Mutation and origin of species
Answers:
1. B
2. C
3. A
4. A
5. D
6. D
7. C
8. C
9. D
10. C
No comments:
Post a Comment