Model Questions for Scientific Assistant (IMD) Exam (Paper-2) PHYSICS - Set 22

Model Questions for Scientific Assistant (IMD) Exam (Paper-2) PHYSICS - Set 22

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1. Melting under pressure, followed by refreezing once the pressure is removed.

a. Condensation
b. Boiling
c. Melting
d. Regelation

2. A liquid phase changes to a gaseous phase.

a. Evaporation
b. Sublimation
c. Condensation
d. Boiling

3. Copper and aluminum have outer electrons that are loosely bound to the atoms. This makes these elements----

a. poor electrical conductors
b. expensive
c. pure
d. good electrical conductors

4. Radiation from the star “Betelgeuse” is of longer wavelength than the sun. This means that the sun is ___ compared to that star.

a. cooler
b. hotter
c. at the same temperature
d. larger

5. At the same temperature, molecules of hydrogen have ___ speed compared to molecules of oxygen.

a. higher
b. lower
c. the same
d. no

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6. At 350 degrees C, your oven radiates with a wavelength that is ___ compared to your stove top that is 500 C.

a. shorter
b. longer
c. the same
d. none of the above

7. To reduce the odds of being burned, would you choose to walk rapidly across a bed of red hot----

a. coal
b. iron
c. gold
d. aluminum

8. When water freezes it----

a. absorbs energy
b. gives off energy
c. neither
d. both

9. You wet your finger before you briefly touch a clothes iron. The protection (from wetting your finger) would be higher if the “heat of vaporization” of the water is----

a. higher
b. lower
c. the same
d. zero

200. When a metal is heated until it vaporizes, it----

a. absorbs energy
b. gives off energy
c. neither
d. both

Answers

1. (d) 2. (a) 3. (d) 4. (b) 5. (a) 6. (b) 7. (a) 8. (b) 9. (a) 200. (a)

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Study Kit for SSC Scientific Assistant (IMD) EXAM