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.
| 601. |
Directions: The following items consist of two statements, Statement I and Statement II. You are to examine these two statements carefully and select the answers to these items using the code given below:Statement I: Diamond is very bright.Statement II: Diamond has very low refractive index |
| A. | Both the statements are individually true and Statement II is the correct explanation of statement I |
| B. | Both the statements are individually true but Statement II is not the correct explanation of Statement I |
| C. | Statement I is true but Statement II is false |
| D. | Statement I is false but Statement II is true |
| Answer» D. Statement I is false but Statement II is true | |
| 602. |
Due to an acceleration of 1 m/s2 the velocity of a body increases from 5 m/s to 10 m/s in a certain period. Find the displacement (in m) of the body in that period. |
| A. | 125 |
| B. | 37.5 |
| C. | 62.5 |
| D. | 75 |
| Answer» C. 62.5 | |
| 603. |
Calculate the current drawn from a generator having a voltage output of 220 V when connected to a motor having a power of 1100 W. |
| A. | 5 A |
| B. | 50 A |
| C. | 10 A |
| D. | 100 A |
| Answer» B. 50 A | |
| 604. |
An incident ray strikes a plane mirror at an angle of 15o with the mirror. The angle between the incident ray and reflected ray is _________. |
| A. | 45° |
| B. | 135° |
| C. | 150° |
| D. | 90° |
| Answer» D. 90° | |
| 605. |
Optical fibre works on the principle of ________. |
| A. | Diffusion |
| B. | Total Internal Reflection |
| C. | Scattering |
| D. | Refraction |
| Answer» C. Scattering | |
| 606. |
Formula for adipic acid is _________. |
| A. | HOOC(\(C{H_2}{)_6}\)COOH |
| B. | HOOC(\(C{H_2}{)_4}\)COOH |
| C. | HOOC(\(C{H_2}{)_3}\)COOH |
| D. | HOOC(\(C{H_2}{)_2}\)COOH |
| Answer» C. HOOC(\(C{H_2}{)_3}\)COOH | |
| 607. |
Force due to which everybody in the universe attract every other body is: |
| A. | electromagnetic force |
| B. | nuclear force |
| C. | repulsive force |
| D. | force of gravitation |
| Answer» E. | |
| 608. |
If the forces of 25 newtons and 10 newtons are acting in the vertically upward direction and vertically downward direction on a body respectively, then the magnitude of the net force acting on the body is: |
| A. | 35 newtons |
| B. | 25 newtons |
| C. | 15 newtons |
| D. | 10 newtons |
| Answer» D. 10 newtons | |
| 609. |
If the time period of a sound wave is 0.02 s, then what is its frequency? |
| A. | 50 Hz |
| B. | 100 Hz |
| C. | 25 Hz |
| D. | 500 Hz |
| Answer» B. 100 Hz | |
| 610. |
If chlorine has two isotopes one of 35u and the other 37u and the average mass of chlorine atom is 35.5u, then the ratio of abundance of the two isotopes of masses 35u and 37u is _______. |
| A. | 1/3 |
| B. | 1/4 |
| C. | 3/1 |
| D. | 4/1 |
| Answer» D. 4/1 | |
| 611. |
MRI is an abbreviation forA. Medical Research InformationB. Magnetic Resonance ImagingC. Media Research InformationD. Medical Research Imaging |
| A. | D |
| B. | B |
| C. | C |
| D. | A |
| Answer» C. C | |
| 612. |
A person holding a pen in his left-hand sees his reflection in the mirror holding the pen in his right hand. This is due to which of the following phenomena? |
| A. | Diffused reflection |
| B. | Total internal reflection |
| C. | Lateral inversion |
| D. | Refraction |
| Answer» D. Refraction | |
| 613. |
On what factor does the colour of scattered light depend upon? |
| A. | The size of the scattering particles |
| B. | The amount of impurity |
| C. | The colour of the scattering particles |
| D. | The refractive index of the particles |
| Answer» B. The amount of impurity | |
| 614. |
A person rings a metallic bell near a strong concrete wall. He hears the echo after 0.3 s. If the sound moves with a speed of 340 m/s, how far is the wall from him? |
| A. | 102 m |
| B. | 11 m |
| C. | 51 m |
| D. | 30 m |
| Answer» D. 30 m | |
| 615. |
An ideal coil of 10H is connected in series with a resistance of 5Ω and a battery of 5V. Two seconds after the connection is made, the current flowing in ampere in the circuit is |
| A. | (1 – e-1) |
| B. | (1 – e) |
| C. | e |
| D. | e – 1 |
| Answer» B. (1 – e) | |
| 616. |
Fuse wire of appropriate thickness improves its efficiency to prevent damage. These wires are made up of : |
| A. | Pure zinc |
| B. | Pure lead |
| C. | Alloy of lead and tin |
| D. | Alloy of lead and zinc |
| Answer» D. Alloy of lead and zinc | |
| 617. |
A snowboard pulled up by a tow rope travels at the rate of 5 m/s up a mountain If 3000 watt of power is used, what force was applied to it? |
| A. | 50 N |
| B. | 100 N |
| C. | 600 N |
| D. | 15000 N |
| Answer» D. 15000 N | |
| 618. |
Lubricants are those substances that _________. |
| A. | Increase friction |
| B. | Reduce friction |
| C. | Do not effect friction |
| D. | No option is correct |
| Answer» C. Do not effect friction | |
| 619. |
A change of state directly from solid to gas without changing into the liquid state (or vice versa) is called ________. |
| A. | Evaporation |
| B. | Condensation |
| C. | Sublimation |
| D. | Diffusion |
| Answer» D. Diffusion | |
| 620. |
A spherical mirror whose reflecting surface is curved inwards is called a _____________ mirror. |
| A. | convex |
| B. | Conflict |
| C. | concave |
| D. | Plane |
| Answer» D. Plane | |
| 621. |
A very soft whisper may have noise level of |
| A. | About 10 db |
| B. | About 30 db |
| C. | About 40 db |
| D. | About 100 db |
| Answer» C. About 40 db | |
| 622. |
In very cold countries the thermometric liquid used is alcohol because _____. |
| A. | The freezing point is lower than that of mercury |
| B. | The freezing point is higher than that of mercury |
| C. | The boiling point is much higher than that of mercury |
| D. | The boiling point is same as that of mercury |
| Answer» B. The freezing point is higher than that of mercury | |
| 623. |
Jet engine works on the principal of conservation of ________. |
| A. | Heat |
| B. | Mass |
| C. | Linear momentum |
| D. | Angular momentum |
| Answer» D. Angular momentum | |
| 624. |
In the context of the contribution of scientists for which they were awarded Nobel Prize, which of the following pairs is INCORRECT? |
| A. | Diffraction of X-rays – Max Von Laue |
| B. | Light scattering – CV Raman |
| C. | Quantum mechanics – Galileo Galilei |
| D. | Zeeman Effect – Hendrik Lorentz |
| Answer» D. Zeeman Effect – Hendrik Lorentz | |
| 625. |
A photocell converts light energy into ________. |
| A. | Chemical energy |
| B. | Electrical energy |
| C. | Potential energy |
| D. | Kinetic energy |
| Answer» C. Potential energy | |
| 626. |
A cut diamond shines brilliantly due to |
| A. | some inherent property |
| B. | total internal reflection |
| C. | its molecular structure |
| D. | absorption of light |
| Answer» C. its molecular structure | |
| 627. |
A set of equations involving electric and magnetic fields, and their sources, the charge and current densities are known as ______ equations. |
| A. | Newton’s |
| B. | Bhor’s |
| C. | Einstein’s |
| D. | Maxwell’s |
| Answer» E. | |
| 628. |
Consider the following pairs:Object : Mass (in kg)1] Proton: 10-272] Rain Drop: 10-63] Automobile: 1074] Sun : 1030Which of the above pairs are correctly matched? |
| A. | 1 and 4 only |
| B. | 1, 2 and 4 only |
| C. | 3 and 4 only |
| D. | 2 and 3 only |
| Answer» C. 3 and 4 only | |
| 629. |
Mirror used by dentist to see large images of teeth of patients is ______. |
| A. | ZigZag Mirror |
| B. | Convex Mirror |
| C. | Plane Mirror |
| D. | Concave Mirror |
| Answer» E. | |
| 630. |
An instrument called ______ measures electric potential difference in a circuit. |
| A. | Gyroscope |
| B. | Ohmmeter |
| C. | Voltmeter |
| D. | Thermometer |
| Answer» D. Thermometer | |
| 631. |
A radioactive isotope has a half-life of 10 days. If today there are 125 g of it left, what was its original weight 40 days earlier? |
| A. | 600 g |
| B. | 1000 g |
| C. | 1250 g |
| D. | 2000 g |
| Answer» E. | |
| 632. |
1H1 + 1H1 → 2H1 + _________ |
| A. | Positron |
| B. | Proton |
| C. | Neutron |
| D. | Electron |
| Answer» B. Proton | |
| 633. |
Pressure is measured in terms ofA. Mass & DensityB. Work doneC. Force and AreaD. Force and Distance |
| A. | D |
| B. | A |
| C. | C |
| D. | B |
| Answer» D. B | |
| 634. |
Clouds looking white in colour are due to the phenomenon of _____. |
| A. | Reflection of light |
| B. | Scattering of light |
| C. | Refraction of light |
| D. | Radiation |
| Answer» C. Refraction of light | |
| 635. |
Decibel is |
| A. | Musical instrument |
| B. | Unit of sound |
| C. | The wavelength of noise |
| D. | None of the above |
| Answer» C. The wavelength of noise | |
| 636. |
For a body moving with uniform acceleration its final velocity equals ________. |
| A. | average velocity - initial velocity |
| B. | 2 × average velocity - initial velocity |
| C. | 2 × average velocity + initial velocity |
| D. | average velocity + initial velocity |
| Answer» C. 2 × average velocity + initial velocity | |
| 637. |
Assertion (A): If a body moving in a circular path has a constant speed, then there is no force acting on it.Reason (R): The direction of the velocity vector of a body moving in a circular path is changing. |
| A. | (A) is wrong (R) is correct. |
| B. | (A) and (R) are correct and (R) is the correct explanation of (A). |
| C. | (A) and (R) are correct and (R) is not the correct explanation of (A) |
| D. | Both (A) and (R) are wrong |
| Answer» B. (A) and (R) are correct and (R) is the correct explanation of (A). | |
| 638. |
An instrument that measures air pressure is |
| A. | anemometer |
| B. | thermometer |
| C. | barometer |
| D. | lactometer |
| Answer» D. lactometer | |
| 639. |
On which principle does a Nuclear Power Plant work? |
| A. | Fission |
| B. | Fusion |
| C. | Thermal combustion |
| D. | No option is correct |
| Answer» B. Fusion | |
| 640. |
Due to atmospheric refraction, sunrise is advanced and sunset is delayed by about _________. |
| A. | 2 minutes |
| B. | 1 minutes |
| C. | 3 minutes |
| D. | 4 minutes |
| Answer» B. 1 minutes | |
| 641. |
If a pendulum is allowed to oscillate in vacuum ,its time period will _____. |
| A. | Decreases |
| B. | Increases |
| C. | Remain same |
| D. | first increases and then decreases |
| Answer» D. first increases and then decreases | |
| 642. |
A 10-kg object is moving at a speed of 5 m/s. The kinetic energy of the object will be ____. |
| A. | 2 J |
| B. | 25 J |
| C. | 50 J |
| D. | 125 J |
| Answer» E. | |
| 643. |
A feather, a plastic ball and a steel ball are dropped simultaneously from a common point in vacuum. Which one will touch the ground first? |
| A. | Steel Ball |
| B. | Feather |
| C. | Plastic Ball |
| D. | All will reach at the same time |
| Answer» E. | |
| 644. |
A ............ measures the humidity of the air. |
| A. | hygrometer |
| B. | micrometer |
| C. | thermometer |
| D. | hydrometer |
| Answer» B. micrometer | |
| 645. |
Cathode rays are a beam of: |
| A. | protons |
| B. | positrons |
| C. | electrons |
| D. | neutrons |
| Answer» D. neutrons | |
| 646. |
If the kinetic energy of a body becomes 256 times its initial value, then the new linear momentum will be: |
| A. | The same as the initial value |
| B. | 8 times the initial value |
| C. | 16 times the initial value |
| D. | 32 times the initial value |
| Answer» D. 32 times the initial value | |
| 647. |
An object has a potential energy of 400 J with a mass of 20 kg and gravity of 10 N kg-1. The height of the object is |
| A. | 0.5 m |
| B. | 4 m |
| C. | 1 m |
| D. | 2 m |
| Answer» E. | |
| 648. |
At surface of earth, where air friction is negligible, objects fall with the ______. |
| A. | same acceleration |
| B. | same speed |
| C. | different acceleration |
| D. | same velocity |
| Answer» B. same speed | |
| 649. |
In the electronic communication system, digital signalsa. do not provide a continuous set of values.b. represent values as discrete steps.c. utilize a binary system.d. utilize decimal as well as binary systems.Which of the above statements are true? |
| A. | Only a and b |
| B. | Only b and c |
| C. | a, b and c |
| D. | All of the above |
| Answer» D. All of the above | |
| 650. |
Practically, the work output of a machine is _______ the work input due to the effect of friction. |
| A. | always more than |
| B. | opposite to |
| C. | always less than |
| D. | always zero to |
| Answer» D. always zero to | |