Miscellaneous (Part -1)

Total Questions: 50

1. Which physicist was awarded the Nobel Prize for Quantum Theory in 1918? [C.P.O. S.I. 5.06.2016 (Shift-1)]

(a) Max Puluk
(b) Niels Behr
(c) Max Planck
(d) Barrie

Correct Answer: (c) Max Planck

Solution:The Nobel Prize in Physics 1918 was awarded to Max Karl Ernst Ludwig Planck "in recognition of the services he rendered to the advancement of Physics by his discovery of energy quanta."

2. Who gave the 'Raman Effect'?

(a) Galileo Galilei
(b) CV Raman
(c) Marie Curie
(d) none of these

Correct Answer: (b) CV Raman

Solution:Sir C.V. Raman with the quartz spectrograph used to measure the wavelengths of the scattered light became known as the Raman Effect.

3. Which phenomenon deals with the scattering of light by molecules of a medium when they are excited to vibrational energy levels? [S.S.C. Online CGL (T-1) 24.08.2021 (Shift-III)]

(a) Maxwell Effect
(b) Raman Effect
(c) Rayleigh Effect
(d) Huygens Effect

Correct Answer: (b) Raman Effect

Solution:The Raman Effect deals with the scattering of light by molecules of a medium when they are excited to vibrational energy levels. The appearance of additional lines in the spectrum of monochromatic light has been scattered by a transparent material medium known as the Raman effect.

4. Which of the following pairing is incorrect? [S.S.C. Online Graduation Level (T-1) 7.09.2016 (Shift-II)]

(a) Hygrometer-Water vapour content of the atmosphere.
(b) Lactometer-Specific gravity of liquids.
(c) Anemometer-Speed of the wind.
(d) Seismograph-Earthquakes.

Correct Answer: (b) Lactometer-Specific gravity of liquids.

Solution:Hygrometer is an instrument used to measure the relative humidity of the atmosphere. A lactometer is used to measure the relative density of milk and check its purity. The velocity of air is measured by anemometer. Seismograph is an instrument used to measure seismic intensity., Hence option (b) is not the correct pair.

5. Which of the following instrument is used to check the purity of milk by measuring the relative density of milk? [S.S.C. JE Electrical Exam 10.12.2020 (Shift-II)]

(a) Lactometer
(b) Odometer
(c) Barometer
(d) Spherometer

Correct Answer: (a) Lactometer

6. Which of the following cells is NOT used in watches? [S.S.C. Online CHSL (T-1) 10.08.2021 (Shift-III)]

(a) Zinc-air cell
(b) Mercury cell
(c) Silver oxide cell
(d) Lead acid cell

Correct Answer: (d) Lead acid cell

Solution:The lead-acid cell or battery is not used in watches. The lead-acid battery represents the oldest rechargeable battery technology. Lead acid batteries can be found in a wide variety of applications including small scale power storage such as UPS systems, starting lighting and ignition power sources for automobiles, along with large, grid-scale power systems.

7. Which device is used to test whether an object is carrying charge or not? [S.S.C. Online MTS (T-1) 5.10.2017 (Shift-II)]

(a) Thermometer
(b) Stethoscope
(c) Odometer
(d) Electroscope

Correct Answer: (d) Electroscope

Solution:An electroscope is a device that is used to testif an object is carrying a charge or not. Itconsists of 2 metal leaves that are connected to a metal rod which in turn is connected to a disc. Whenever an object strikes the electroscope which has a positive charge, the same positive charge will be conducted to the leaves. These leaves are metallic and as they carry the same charge so they repel each other. When the leaves move away from each other, the object is a charged body, and if they come close to each other, it implies the object is uncharged.

8. Which of the following changes cannot be reversed? [S.S.C. JE Civil Exam 23.03.2021 (Shift-1)]

(a) Rolling a roti from the dough and baking it on a Tawa.
(b) Changing wet clothes to dry clothes.
(c) Blowing a balloon to increase its size till it is about to burst.
(d) Stretching a rubber band and returning it to its normal size.

Correct Answer: (c) Blowing a balloon to increase its size till it is about to burst.

Solution:After rolling out the dough and baking it on the pan. cannot be reversed again. Whereas the facts given in other options will return to their original position after the process. Hence option (a) is the correct answer.

9. Which scientific instrument is used to measure the height of an aircraft above a fixed level? [S.S.C. Online CHSL (T-1) 13.04.2021 (Shift-1)]

(a) Wattmeter
(b) Fathometer
(c) Altimeter
(d) Barometer

Correct Answer: (c) Altimeter

Solution:Altimeter is used to measure altitudes in aircrafts. The altimeter is pressure operated instrument. It is similar to barometer expect that it uses units of distance(meters or feet). It works by measuring air pressure and also utilizing the fact the air pressure of the atmosphere decreases by approximately I millibar for each 10 meters in height.

10. Humidity of air is measured by ______ . [S.S.C. Online CHSL (T-1) 27.01.2017 (Shift-III)]

(a) Hygrometer
(b) Nanometer
(c) Glucometer
(d) Barometer

Correct Answer: (a) Hygrometer

Solution:Humidity is measured using a hygrometer, a tool that utilizes various materials and measurements to gauge a room or space's level of water vapour.

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