MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 2016 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.
| 251. |
In whose model an atom is a spherical cloud of positive charges with electrons embedded in it? |
| A. | Planck ’s |
| B. | Thomson’s |
| C. | Bohr's |
| D. | Rydberg's |
| Answer» C. Bohr's | |
| 252. |
If a person moves a trolley for a distance of 10 m with a force of 50 N, then the work done is: |
| A. | 0.2 J |
| B. | 5 J |
| C. | 20 J |
| D. | 500 J |
| Answer» E. | |
| 253. |
Energy in the form of heat is wasted when a machine is operated. This heat is generated due to ___________. |
| A. | burning |
| B. | friction |
| C. | combustion |
| D. | lubrication |
| Answer» C. combustion | |
| 254. |
Consider the following statements:1. There is no net moment on a body which is in equilibrium.2. The momentum of a body is always conserved.3. The kinetic energy of an object is always conserved.Which of the statements given above is/are correct? |
| A. | 1, 2 and 3 |
| B. | 2 and 3 only |
| C. | 1 and 2 only |
| D. | 1 only |
| Answer» D. 1 only | |
| 255. |
Audible range for adult human beings is: |
| A. | Less than 20 Hz |
| B. | 20 to 20,000 Hz |
| C. | 21,000 to 50,000 Hz |
| D. | 100 to 120 kHz |
| Answer» C. 21,000 to 50,000 Hz | |
| 256. |
In which of the following objects will the property of inertia be the largest? |
| A. | Toy car |
| B. | Motorcycle |
| C. | Car |
| D. | Truck |
| Answer» E. | |
| 257. |
A circuit has a fuse having a rating of 5 A. What is the maximum number of 100 W-220 V bulbs that can be safely connected in parallel in the circuit? |
| A. | 20 |
| B. | 15 |
| C. | 11 |
| D. | 10 |
| Answer» D. 10 | |
| 258. |
A parallel-plate capacitor of capacitance C1 is made using two gold plates. Another parallel-plate capacitor of capacitance C2 is made using two aluminium plates with same plate separation, and all the four plates are of same area. If ρg and ρa are respectively the electrical resistivity of gold and aluminium, then which one of the following relations is correct? |
| A. | C1 > C2 |
| B. | C2 > C1 |
| C. | C1ρa = C2ρg |
| D. | C1 = C2 |
| Answer» E. | |
| 259. |
Hygrometer is used to measure which of the following ? |
| A. | Specific gravity |
| B. | Sound under water |
| C. | Relative humidity |
| D. | Density of milk |
| Answer» D. Density of milk | |
| 260. |
An object moving with a uniform velocity of 4ms-1 possesses kinetic energy of 120 J. Find the mass of the object. |
| A. | 15 N |
| B. | 15 W |
| C. | 15 Kg |
| D. | 15 Pa |
| Answer» D. 15 Pa | |
| 261. |
In which mirror, image formed is virtual, erect and point sized? |
| A. | Plane |
| B. | Convex |
| C. | Concave |
| D. | No option is correct |
| Answer» C. Concave | |
| 262. |
Lactometers (used to determine the purity of a sample of milk) and hydrometers (used to determine the density of liquids) are based on the ______ principle. |
| A. | Archimedes |
| B. | Special Relativity |
| C. | Relativity |
| D. | Uncertainty |
| Answer» B. Special Relativity | |
| 263. |
_______ is the commercial unit of energy. |
| A. | Kilowatt |
| B. | Watt hour |
| C. | Kilowatt hour |
| D. | Joule |
| Answer» D. Joule | |
| 264. |
In _______ motion of a body its velocity varies with time. |
| A. | Uniform |
| B. | Linear |
| C. | Equilibrium |
| D. | Non-uniform |
| Answer» E. | |
| 265. |
An EEG is a test used to evaluate the electrical activity in the brain. Select the full form of EEG. |
| A. | Electroepilepsygraph |
| B. | Electroencephalogram |
| C. | Electroessentialgraphy |
| D. | Electroeccentricgraphy |
| Answer» C. Electroessentialgraphy | |
| 266. |
'Fathometer' is used to measure |
| A. | Earthquakes |
| B. | Rainfall |
| C. | Ocean Depth |
| D. | Sound Intensity |
| Answer» D. Sound Intensity | |
| 267. |
An astronaut in the satellite feels weightlessness because _______a. the force exerted by the satellite floor on the astronaut is equal to zero.b. the astronaut and the satellite floor are attracted towards each other.c. he is not attracted by any gravitational force. d. None of the above |
| A. | a, b and c |
| B. | Only a and b |
| C. | Only a and c |
| D. | Only d |
| Answer» D. Only d | |
| 268. |
After a shower of rain, a rainbow is seen |
| A. | towards the sun |
| B. | opposite to the sun |
| C. | anywhere, irrespective of the position of the sun |
| D. | even in the absence of the sun |
| Answer» C. anywhere, irrespective of the position of the sun | |
| 269. |
Basic scientific principle behind a nuclear reactor is |
| A. | Nuclear fusion |
| B. | Controlled nuclear fusion |
| C. | Uncontrolled nuclear fission |
| D. | Controlled nuclear fission |
| Answer» E. | |
| 270. |
A current of 10 Ampere flows through a wire whose ends are at a potential difference of 3 Volts. Calculate the resistance of the wire. |
| A. | 6 Ω |
| B. | 3 Ω |
| C. | 0.3 Ω |
| D. | 0.6 Ω |
| Answer» D. 0.6 Ω | |
| 271. |
If the Distance-Time graph is a straight inclined line, then it represents _________. |
| A. | Uniform speed |
| B. | Non-uniform speed |
| C. | Constant displacement |
| D. | Non-uniform velocity |
| Answer» B. Non-uniform speed | |
| 272. |
An earthquake of magnitude ________ on Richter scale has thousand times more destructive energy than an earthquake of magnitude 4. |
| A. | 5 |
| B. | 7 |
| C. | 6 |
| D. | 8 |
| Answer» D. 8 | |
| 273. |
Hydrogen bomb is based on |
| A. | nuclear fission |
| B. | nuclear fusion |
| C. | natural radioactivity |
| D. | artificial radioactivity reactions |
| Answer» C. natural radioactivity | |
| 274. |
In liquids and gases, the transfer of heat is mainly by _______ |
| A. | Convection |
| B. | Conduction |
| C. | Radiation |
| D. | Melting |
| Answer» B. Conduction | |
| 275. |
Noise pollution is measured in - |
| A. | Ohm |
| B. | Decibel |
| C. | Joule |
| D. | Ampere |
| Answer» C. Joule | |
| 276. |
1 joule/second = ? |
| A. | 1 watt |
| B. | 1 ohm |
| C. | 1 ampere |
| D. | 1 coulomb |
| Answer» B. 1 ohm | |
| 277. |
A Sonar of a ship sends sounds waves of speed 1000 m/s. These waves are reflected back by the ocean floor in 2 seconds. Find the depth (in m) of the ocean floor. |
| A. | 2000 |
| B. | 500 |
| C. | 1000 |
| D. | 100 |
| Answer» D. 100 | |
| 278. |
Propagation of sound can be visualised as propagation of _______ variations in the medium. |
| A. | Elasticity |
| B. | Viscosity |
| C. | Density |
| D. | Porosity |
| Answer» D. Porosity | |
| 279. |
If a wave completes 20 vibrations in 2.5 s, then its frequency is ________. |
| A. | 4 Hz |
| B. | 1 Hz |
| C. | 2 Hz |
| D. | 8 Hz |
| Answer» E. | |
| 280. |
On which of the following principles does a fuse work? |
| A. | On the mechanical effect of electricity |
| B. | On the magnetic effect of electricity |
| C. | On the chemical effects of electricity |
| D. | On the thermal effects of electricity |
| Answer» E. | |
| 281. |
All nuclides with same mass number 'A' are called __________. |
| A. | isotopes |
| B. | isomers |
| C. | isotones |
| D. | isobars |
| Answer» E. | |
| 282. |
If a body has a specify gravity of less than 1, then it will float in/on ___________. |
| A. | air |
| B. | water |
| C. | liquids |
| D. | mercury |
| Answer» C. liquids | |
| 283. |
Consider a planet whose mass and radius are one-third the mass and radius of the earth. If g is the value of acceleration due to gravity on the earth, then its value on the planet will be__ |
| A. | 9g |
| B. | 3g |
| C. | 1/9 g |
| D. | 1/3 g |
| Answer» C. 1/9 g | |
| 284. |
In nuclear reactions we have conservation of |
| A. | mass only |
| B. | energy only |
| C. | momentum only |
| D. | mass, energy & momentum |
| Answer» E. | |
| 285. |
237Np93 → AU92 + α particle + β particle. What is the value of A? |
| A. | 234 |
| B. | 231 |
| C. | 233 |
| D. | 235 |
| Answer» D. 235 | |
| 286. |
An object starts moving from rest, with constant acceleration. Its velocity is: |
| A. | Inversely proportional to time |
| B. | directly proportional to time |
| C. | Inversely proportional to time square |
| D. | Directly proportional to time square |
| Answer» C. Inversely proportional to time square | |
| 287. |
Ohm is the SI unit of ________. |
| A. | electric charge |
| B. | electric current |
| C. | potential difference |
| D. | resistance |
| Answer» E. | |
| 288. |
Pick out the wrong statement in the following: |
| A. | Steel is more elastic than copper. |
| B. | The audible limit of sound of human ear is 20 Hertz to 2000 Hertz |
| C. | When light travels from air into glass its frequency changes. |
| D. | Cadmium rods are used in Nuclear reactor to control nuclear fission. |
| Answer» D. Cadmium rods are used in Nuclear reactor to control nuclear fission. | |
| 289. |
Put the sound in ascending order of traveling speed for the following media:A. AirB. WaterC. IronSelect the correct answer from the options given below: |
| A. | B, A, C |
| B. | A, B, C |
| C. | A, C, B |
| D. | None of the above |
| Answer» C. A, C, B | |
| 290. |
If an agent does a work ‘W’ in time ‘t’, then the power is given by ________. |
| A. | W/t |
| B. | t/W |
| C. | W × t |
| D. | W + t |
| Answer» B. t/W | |
| 291. |
\(\gamma - ray\) consist of : |
| A. | Meson particles |
| B. | Neutrino Particles |
| C. | Higg's boson |
| D. | Electromagnetic Waves |
| Answer» E. | |
| 292. |
Raindrops are spherical due to |
| A. | continuous evaporation |
| B. | viscosity of water |
| C. | air friction |
| D. | surface tension of water |
| Answer» E. | |
| 293. |
Light is a ________ wave. |
| A. | longitudinal |
| B. | elastic |
| C. | transverse |
| D. | mechanical |
| Answer» D. mechanical | |
| 294. |
In different countries, which of the following are the two major systems of standard measuring units?I. The metric systemII. The British or imperial systemIII. The calculation system |
| A. | I and II |
| B. | I and III |
| C. | I, II and III |
| D. | II and III |
| Answer» B. I and III | |
| 295. |
________ is the amount of work done in carrying a charge of 4C across two points having a potential different of 18 V. |
| A. | 24 J |
| B. | 72 J |
| C. | 7.2 J |
| D. | 4.5 J |
| Answer» C. 7.2 J | |
| 296. |
A wire carries a steady current of 0.2 A for a period of 10 s. The total charge that passes through the wire in this time interval is: |
| A. | 0.02 C |
| B. | 50 C |
| C. | 20 C |
| D. | 2.0 C |
| Answer» E. | |
| 297. |
Air velocity is measured by which of the following instrument? |
| A. | Thermometer |
| B. | Barometer |
| C. | Anemometer |
| D. | Hygrometer |
| Answer» D. Hygrometer | |
| 298. |
A barometer is used to measure which one of the following? |
| A. | current |
| B. | atmospheric pressure |
| C. | humidity |
| D. | altitude |
| Answer» C. humidity | |
| 299. |
If an agent does work W in time t, then power is given by: |
| A. | Time=Work |
| B. | Time × work |
| C. | Time - work |
| D. | Work/time |
| Answer» E. | |
| 300. |
Name the law in Physics which states that equal volume of all gases under the same conditions of temperature and pressure contain the equal number of molecules. |
| A. | Ohm’s Law |
| B. | Charles's Law |
| C. | Avogadro’s Law |
| D. | Boyles's Law |
| Answer» D. Boyles's Law | |