1. How many colors are in the sunlight spectrum?
a) Eight
b) Seven
c) Six
d) Nine
2. What is the cause of nuclear fission?
a) Neutron
b) Nuclei
c) Proton
d) Electron
3. The wavelength of X-rays is of the order of?
a) 1 angstrom
b) 1 micron
c) 1 cm
d) 1 m
4. Which is used as a moderator in nuclear reactors?
a) Graphite
b) Thorium
c) Plutonium
d) Radium
5. Isotopes are separated by?
a) Sublimation
b) Crystallisation
c) Filtration
d) Distillation
a) Eight
b) Seven
c) Six
d) Nine
2. What is the cause of nuclear fission?
a) Neutron
b) Nuclei
c) Proton
d) Electron
3. The wavelength of X-rays is of the order of?
a) 1 angstrom
b) 1 micron
c) 1 cm
d) 1 m
4. Which is used as a moderator in nuclear reactors?
a) Graphite
b) Thorium
c) Plutonium
d) Radium
5. Isotopes are separated by?
a) Sublimation
b) Crystallisation
c) Filtration
d) Distillation
6. Atoms are composed of?
a) Electrons and Protons
b) Electrons and Nuclei
c) Protons only
d) Electrons only
7. What is the wavelength of the visible spectrum?
a) 300 to 800 nm
b) 450 to 750 nm
c) 380 to 700 nm
d) 500 to 900 nm
8. Which particle has the least penetrating power?
a) Cathode Particles
b) Alpha Particles
c) Beta Particles
d) Gamma Particles
9. Mesons are found in which rays?
a) Infrared rays
b) UV- rays
c) Gamma rays
d) Cosmic rays
10. Which is a positively charged particle emitted by a radioactive element?
a) Gamma Particle
b) Cathode Particle
c) Alpha Particle
d) Beta Particle
a) Electrons and Protons
b) Electrons and Nuclei
c) Protons only
d) Electrons only
7. What is the wavelength of the visible spectrum?
a) 300 to 800 nm
b) 450 to 750 nm
c) 380 to 700 nm
d) 500 to 900 nm
8. Which particle has the least penetrating power?
a) Cathode Particles
b) Alpha Particles
c) Beta Particles
d) Gamma Particles
9. Mesons are found in which rays?
a) Infrared rays
b) UV- rays
c) Gamma rays
d) Cosmic rays
10. Which is a positively charged particle emitted by a radioactive element?
a) Gamma Particle
b) Cathode Particle
c) Alpha Particle
d) Beta Particle
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