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18th Chapter

10th class Physics Ch 18 (English Medium)

Here you can prepare 10th Physics English Medium Chapter 18 (Radioactivity) Test. Click the button for 100% free full practice test.

Matric Part 2/10th Class Physics Chapter 18 MCQ Test With Answer for Chapter 18 (Radioactivity)

Matric Part 2/10th Class Physics Chapter 18 MCQ Test With Answer for Chapter 18 (Radioactivity)

Sr. # Questions Answers Choice
1 The half life of plutonium<sup> 236</sup>Pu<sub>94 </sub>is:
  • A. 2.00 years
  • B. 2.35 years
  • C. 2.79 years
  • D. 2.85 years
2 <p class="MsoNormal">The galvanometer has been named after the scientist:<o:p></o:p></p>
  • A. <p class="MsoNormal">Lewis<o:p></o:p></p>
  • B. <p class="MsoNormal">Lowry bronsted<o:p></o:p></p>
  • C. <p class="MsoNormal">Luigi Galvano<o:p></o:p></p>
  • D. <p class="MsoNormal">Galvano Einstein<o:p></o:p></p>
3 <p class="MsoNormal">in a dry cell, chemical energy changes into:<o:p></o:p></p>
  • A. <p class="MsoNormal">mechanical energy<o:p></o:p></p>
  • B. <p class="MsoNormal">electrical energy<o:p></o:p></p>
  • C. <p class="MsoNormal">potential energy<o:p></o:p></p>
  • D. <p class="MsoNormal">kinetic energy<o:p></o:p></p>
4 <p class="MsoNormal">As the temperature of a conductor rises, its resistance:<o:p></o:p></p>
  • A. <p class="MsoNormal">Increases<o:p></o:p></p>
  • B. <p class="MsoNormal">Increases<o:p></o:p></p>
  • C. <p class="MsoNormal">Decreases<o:p></o:p></p>
  • D. <p class="MsoNormal">Does not change<o:p></o:p></p>
  • E. <p class="MsoNormal">None of these<o:p></o:p></p>
5 The symbol of alpha particles is:
  • A. 4AHe
  • B. 42He
  • C. 0-1B
  • D. 00Y
6 Isotopes are atoms of same element with different :
  • A. Atomic mass
  • B. Atomic Number
  • C. Number of proton
  • D. Number of Neutron
7 The process of breaking a heavy nucleus after the bombardment of neutrons into two small nuclei is called:
  • A. Nuclear fission reaction
  • B. Nuclear fusion reaction
  • C. Nuclear Radiation
  • D. Nuclear chain reaction
8 <p class="MsoNormal">Human skin, in dry conditions, has a resistance of:<o:p></o:p></p>
  • A. <p class="MsoNormal">20,000 ohm<o:p></o:p></p>
  • B. <p class="MsoNormal">100,000 ohm<o:p></o:p></p>
  • C. <p class="MsoNormal">30,000 ohm<o:p></o:p></p>
  • D. <p class="MsoNormal">2000 ohm<o:p></o:p></p>
9 Safe limit of radiations exposure in one year.
  • A. 4 rem
  • B. 5 rem
  • C. 3 rem
  • D. 6 rem
10 <p class="MsoNormal">The power of small fan is:<o:p></o:p></p>
  • A. <p class="MsoNormal">40 W<o:p></o:p></p>
  • B. <p class="MsoNormal">50 W<o:p></o:p></p>
  • C. <p class="MsoNormal">60 W<o:p></o:p></p>
  • D. <p class="MsoNormal">80 W<o:p></o:p></p>

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