MCQOPTIONS
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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.
| 301. |
As the object covers unequal distances in equal intervals of time, it is said to be in ______ motion. |
| A. | Uniform |
| B. | Linear |
| C. | Non-uniform |
| D. | Equilibrium |
| Answer» D. Equilibrium | |
| 302. |
Echoes are produced due to _______. |
| A. | Reflection of sound |
| B. | Polarization of sound |
| C. | Refraction of sound |
| D. | Diffraction of sound |
| Answer» B. Polarization of sound | |
| 303. |
A shaving brush is dipped in water. When taken out, the hairs of the brush are seen to be drawn together due to |
| A. | surface tension of water |
| B. | viscosity of water |
| C. | elasticity of the hairs of the brush |
| D. | temperature difference between air and water |
| Answer» B. viscosity of water | |
| 304. |
Astronauts in space communicate with each other by radio links because _____. |
| A. | Sound waves can’t travel in space |
| B. | Sound waves have low frequency |
| C. | Sound waves travel slowly in space |
| D. | Sound waves travel quickly in space |
| Answer» B. Sound waves have low frequency | |
| 305. |
Light Year is related to: |
| A. | weather |
| B. | distance |
| C. | sound |
| D. | speed |
| Answer» C. sound | |
| 306. |
A light year is a unit of which of the following? |
| A. | Light |
| B. | Speed |
| C. | Sound |
| D. | Distance |
| Answer» E. | |
| 307. |
Newton's first law of motion is known as |
| A. | Gravity |
| B. | Law of Inertia |
| C. | Law of conservation of momentum |
| D. | Vertical motion |
| Answer» C. Law of conservation of momentum | |
| 308. |
A man has five resistors, each of value \(\left( {\frac{1}{5}} \right){\rm{\Omega }}\). The value of the maximum resistance obtained by connecting them in series will be |
| A. | \(\frac{1}{2}{\rm{\Omega }}\) |
| B. | \(\frac{2}{5}{\rm{\Omega }}\) |
| C. | 5 Ω |
| D. | 1 Ω |
| Answer» E. | |
| 309. |
At a given temperature, the speed of sound is maximum in _________. |
| A. | Steel |
| B. | Nickel |
| C. | Iron |
| D. | Aluminium |
| Answer» E. | |
| 310. |
On which of the following principles does the human eye work? |
| A. | Dispersion of light |
| B. | Reflection of light |
| C. | Refraction of light |
| D. | Scattering of light |
| Answer» D. Scattering of light | |
| 311. |
Increased wind speed is accompanied by a reduced air ________. |
| A. | Humidity |
| B. | Pressure |
| C. | Density |
| D. | Aridity |
| Answer» C. Density | |
| 312. |
If P, F and A represent pressure, force and area respectively, then |
| A. | \(P = \dfrac{\vec{F}}{\vec{A}}\) |
| B. | \(P=\dfrac{F}{A}\) |
| C. | \(\vec{P}=\dfrac{\vec{F}}{A}\) |
| D. | \(P = \dfrac{\vec{F}}{A}\) |
| Answer» E. | |
| 313. |
If the frequency of a simple pendulum is 2 Hz, how many oscillations will it complete in 16 seconds? |
| A. | 8 |
| B. | 16 |
| C. | 32 |
| D. | 64 |
| Answer» D. 64 | |
| 314. |
50 J of heat is produced each second in a 5 Ω resistance. The potential difference across the resistor is |
| A. | \(\sqrt{50}\) V |
| B. | 40 V |
| C. | 5 \(\sqrt{10}\) V |
| D. | 10 \(\sqrt{5}\) V |
| Answer» D. 10 \(\sqrt{5}\) V | |
| 315. |
A block of mass 2 kg is lifted through 2 m from the ground. The potential energy of the block in joules at that height is (g = 9.8 ms-2) |
| A. | 39.2 |
| B. | 19.6 |
| C. | 4.0 |
| D. | 34.2 |
| Answer» B. 19.6 | |
| 316. |
It is raining heavily and Sonam wishes to reach her home from the garden. The path on which she is least likely to slip is the one lined with_________. |
| A. | Loose soil |
| B. | Gravel |
| C. | Polished marble |
| D. | Cement |
| Answer» C. Polished marble | |
| 317. |
______ is used to convert mechanical energy into electrical energy. |
| A. | Dynamo |
| B. | Microphone |
| C. | Electric motor |
| D. | Battery |
| Answer» B. Microphone | |
| 318. |
If the initial velocity of an object thrown upwards is 14 m/s, then the time taken for the object to reach its highest point will be_______. (a = 9.8 m/s2) |
| A. | 1.43 s |
| B. | 1 s |
| C. | 1.34 s |
| D. | 1.5 s |
| Answer» B. 1 s | |
| 319. |
A safety seat belt in a car exerts a force on our body to: |
| A. | facilitate some kind of backward motion |
| B. | make our forward motion faster |
| C. | rule out any kind of backward motion |
| D. | make our forward motion slower |
| Answer» E. | |
| 320. |
An object of 10 kg is moving with a speed of 2 m/s. The kinetic energy of the object is: |
| A. | 20 J |
| B. | 5 J |
| C. | 10 J |
| D. | 40 J |
| Answer» B. 5 J | |
| 321. |
PV = Constant is called _______. |
| A. | Ohm's law |
| B. | Snell's law |
| C. | Newton's law |
| D. | Boyle's law |
| Answer» E. | |
| 322. |
An electric iron of 750 W is used for 8 hours per day. Then the energy consumed in one day by the iron is: |
| A. | 6 units |
| B. | 600 units |
| C. | 0.6 units |
| D. | 60 units |
| Answer» B. 600 units | |
| 323. |
Electricians use rubber gloves while working because |
| A. | Rubber is an insulator |
| B. | Rubber is a good conductor |
| C. | Wearing rubber gloves is mandatory |
| D. | Rubber makes work easy |
| Answer» B. Rubber is a good conductor | |
| 324. |
A body is falling from a height of 200 m. After it has fallen 100m, the body will possess: |
| A. | Less kinetic energy and more potential energy. |
| B. | Zero potential energy and half Kinetic energy |
| C. | more kinetic energy and less potential energy. |
| D. | Half potential energy and more kinetic energy. |
| Answer» E. | |
| 325. |
Find the acceleration (in m/s2) produced in a body of mass 2 kg when a force of 8 N is applied to it. |
| A. | 4 |
| B. | 16 |
| C. | 8 |
| D. | 32 |
| Answer» B. 16 | |
| 326. |
If two resistors are connected in series, the total resistance is 45 Ω and if the same resistors are connected in parallel, the total resistance becomes 10 Ω. Find the value of the individual resistors. |
| A. | 20 Ω, 25 Ω |
| B. | 20 Ω, 20 Ω |
| C. | 30 Ω, 30 Ω |
| D. | 15 Ω, 30 Ω |
| Answer» E. | |
| 327. |
An atom of 107Ag47 has how many neutrons? |
| A. | 107 |
| B. | 60 |
| C. | 47 |
| D. | 77 |
| Answer» C. 47 | |
| 328. |
In fluid mechanics, Mach number is 1, if the speed of an object is equal to the ________? |
| A. | Speed of light |
| B. | Rotational speed of sun |
| C. | Speed of sound |
| D. | Speed of revolution of earth around the sun |
| Answer» D. Speed of revolution of earth around the sun | |
| 329. |
A sound wave having certain frequency travels with a speed of 336 m/s and wavelength 3 cm. What will its frequency be ? Will it be audible ? |
| A. | 100800 Hz, No |
| B. | 100800 Hz, Yes |
| C. | 11200 Hz, No |
| D. | 11200 Hz, Yes |
| Answer» E. | |
| 330. |
A conductor having some appreciable resistance is called a ________. |
| A. | Conductor |
| B. | Insulator |
| C. | Resistor |
| D. | Semi-conductor |
| Answer» D. Semi-conductor | |
| 331. |
An electric lamp of 100 W is used for 5 hours per day. How much energy will be consumed by the lamp for 3 days? |
| A. | 1.5 units |
| B. | 5.0 units |
| C. | 0.5 units |
| D. | 1.0 units |
| Answer» B. 5.0 units | |
| 332. |
If the image formed by a spherical mirror is virtual, then the magnification value is _________. |
| A. | Negative |
| B. | Zero |
| C. | Positive |
| D. | Infinity |
| Answer» D. Infinity | |
| 333. |
An object with a mass of 100 kg is accelerated uniformly from a velocity of 5 ms-1 to 17 ms-1 in 6 s. The magnitude of the force exerted on the object is ______. |
| A. | 200 ms-2 |
| B. | 200 ms-1 |
| C. | 200 Pa |
| D. | 200 N |
| Answer» E. | |
| 334. |
Find the work done (in J) when a charge of 20 C moves across a potential difference of 4 V. |
| A. | 5 |
| B. | 40 |
| C. | 80 |
| D. | 10 |
| Answer» D. 10 | |
| 335. |
Half life of Iodine-131 is 8 days. How many days will it take for 8 gm of Iodine to become 0.5 gm? |
| A. | 32 |
| B. | 64 |
| C. | 16 |
| D. | 8 |
| Answer» B. 64 | |
| 336. |
During Diwali, crackers are burst outside the building. We hear the sound a bit later after we see it bursting. This is because: |
| A. | Sound wave has same intensity but different frequency |
| B. | Light travels faster than sound |
| C. | Our ears take longer time to hear the sound |
| D. | Sound travels faster than light |
| Answer» C. Our ears take longer time to hear the sound | |
| 337. |
An 800-kg car is moving at a speed of 90 km/h. It takes 5 s to stop after the brakes are applied. The force applied by the brakes will be________. |
| A. | 3000 N |
| B. | 4000 N |
| C. | 1000 N |
| D. | 2000 N |
| Answer» C. 1000 N | |
| 338. |
Kilowatt-hour (kWh) represents the unit of which of the following? |
| A. | Electrical Power |
| B. | Force |
| C. | Momentum |
| D. | Energy |
| Answer» E. | |
| 339. |
_________ speed is measured by the Anemometer. |
| A. | Cyclone |
| B. | Wind |
| C. | Current |
| D. | Earthquake |
| Answer» C. Current | |
| 340. |
Hygrometer is a device which is used to measure ________. |
| A. | Temperature |
| B. | Fragrance |
| C. | Relative humidity |
| D. | Pressure |
| Answer» D. Pressure | |
| 341. |
Echoes may be heard more than once due to successive or multiple ________. |
| A. | Diffractions |
| B. | Refractions |
| C. | Rarefactions |
| D. | Reflections |
| Answer» E. | |
| 342. |
An object covers distance which is directly proportional to the square of the time. Its acceleration is |
| A. | Increasing |
| B. | Decreasing |
| C. | Zero |
| D. | Constant |
| Answer» E. | |
| 343. |
Pressure is calculated as: |
| A. | Force - Area |
| B. | Force * Area |
| C. | Force/Area |
| D. | Force + Area |
| Answer» D. Force + Area | |
| 344. |
If you look into a mirror and find that the image (your reflexion) is smaller than you, then the type of the mirror is: |
| A. | Plano-concave mirror |
| B. | Concave mirror |
| C. | Plane mirror |
| D. | Convex mirror |
| Answer» E. | |
| 345. |
An object of mass 10 kg is moving with a velocity of 2 ms-1. The momentum possessed by the body is ________. |
| A. | 30 kg.m/s |
| B. | 5 kg.m/s |
| C. | 10 kg.m/s |
| D. | 20 kg.m/s |
| Answer» E. | |
| 346. |
A person lifts luggage of 20 kg from the ground and puts it on his head 2 m above the ground. Calculate the work done by him. (g = 10 ms-2) |
| A. | 20 J |
| B. | 400 J |
| C. | 200 J |
| D. | 40 J |
| Answer» C. 200 J | |
| 347. |
An object was thrown upwards at a speed of 14 ms-1 and flew 10 m high. Calculate the time taken by the object to reach the highest point. |
| A. | 1.63 s |
| B. | 1.43 s |
| C. | 1.53 s |
| D. | 1.33 s |
| Answer» C. 1.53 s | |
| 348. |
According to a law postulated by ______, the amounts of different substances liberated by the same quantity of electricity passing through the electrolytic solution are proportional to their chemical equivalent weights. |
| A. | John Dalton |
| B. | Joseph Fourier |
| C. | Michael Faraday |
| D. | Alfred Nobel |
| Answer» D. Alfred Nobel | |
| 349. |
3He2 + 3H1 → 4He2 + proton + _________ |
| A. | neutron |
| B. | proton |
| C. | positron |
| D. | electron |
| Answer» B. proton | |
| 350. |
If action and reaction were to act on the same body, ________. |
| A. | the resultant would be zero |
| B. | the body would not move at all |
| C. | the body will start moving |
| D. | Only (A) and (B) is correct |
| Answer» E. | |