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.
| 501. |
Moment of inertia of a thin rod of mass 'M' and length 'L' about the axis perpendicular to the rod and passing through its centre is _______ |
| A. | \(\frac{ML^2}{4}\) |
| B. | \(\frac{ML^2}{6}\) |
| C. | \(\frac{ML^2}{12}\) |
| D. | \(\frac{ML^2}{2}\) |
| Answer» D. \(\frac{ML^2}{2}\) | |
| 502. |
Magnetism at the centre of Bar magnet is _____________. |
| A. | Minimum |
| B. | Zero |
| C. | Negative |
| D. | Maximum |
| Answer» C. Negative | |
| 503. |
India is an important member of the 'International Thermonuclear Experimental Reactor'. If this experiment succeeds, what is the immediate advantage of India? |
| A. | It can use thorium in place of uranium for power generation |
| B. | It can attain a global role in satellite navigation |
| C. | It can drastically improve the efficiency of its fission reactors in power generation |
| D. | It can build fusion reactors for power generation |
| Answer» E. | |
| 504. |
A shop consumed 250 units of energy in a month. How much energy was consumed in joules? |
| A. | 9 × 10-8 J |
| B. | 9 × 10-7 J |
| C. | 9 × 108 J |
| D. | 9 × 107 J |
| Answer» D. 9 × 107 J | |
| 505. |
It takes much longer to cook things in the hills than in the plains, because |
| A. | Due to low atmospheric pressure in the hills the boiling point of water is raised, and therefore water takes longer to boil |
| B. | In the hills the atmospheric pressure is lower than in the plains and therefore water boils at lower temperatures |
| C. | In the hills the atmospheric temperature is low and therefore a lot of heat is lost to the atmosphere |
| D. | In the hills the humid atmosphere absorbs a lot of heat, leaving very little for cooking |
| Answer» C. In the hills the atmospheric temperature is low and therefore a lot of heat is lost to the atmosphere | |
| 506. |
Rainbow is produced when sunlight falls on drops of rain. Which of the following physical phenomena are responsible for this?1. Dispersion2. Refraction3. Internal reflectionSelect the correct answer using the codes given below. |
| A. | 1 and 2 only |
| B. | 2 and 3 only |
| C. | 1 and 3 only |
| D. | 1, 2 and 3 |
| Answer» E. | |
| 507. |
During respiration O2 is taken in and CO2 is released. The physical process that aids in this exchange is: |
| A. | Osmosis |
| B. | Adsorption |
| C. | Absorption |
| D. | Diffusion |
| Answer» E. | |
| 508. |
Mass/Volume = ? |
| A. | Force |
| B. | Momentum |
| C. | Inertia |
| D. | Density |
| Answer» E. | |
| 509. |
________ is an instrument for measuring a small electric current. |
| A. | Sphygmomanometer |
| B. | Anemometer |
| C. | Galvanometer |
| D. | Hygrometer |
| Answer» D. Hygrometer | |
| 510. |
A slit of width 'a' is illuminated by white light. For what value of 'a' will the first minimum for red light of wavelength 650 nm be at θ = 15° ? (Given sin 15° = 0.2588) |
| A. | 5 μm |
| B. | 2.5 μm |
| C. | 10 μm |
| D. | 4.5 μm |
| Answer» C. 10 μm | |
| 511. |
An object weighing 20 kg is raised through a height of 2 m. What will be the work done by the force of gravity in this process? (g = 10 m\s2) |
| A. | 40 J |
| B. | 100 J |
| C. | 400 J |
| D. | 50 J |
| Answer» D. 50 J | |
| 512. |
Which of the following waves is used for telecommunication? |
| A. | Microwaves |
| B. | Ultra violet rays |
| C. | Infra red rays |
| D. | X-rays |
| Answer» B. Ultra violet rays | |
| 513. |
One horse power is equals to ________. |
| A. | 786 Watts |
| B. | 746 Watts |
| C. | 764 Watts |
| D. | 768 Watts |
| Answer» C. 764 Watts | |
| 514. |
α-particles were discovered by |
| A. | J.J. Thomson |
| B. | A. Einstein |
| C. | E. Rutherford |
| D. | Madam Curie |
| Answer» D. Madam Curie | |
| 515. |
Mechanical energy is the combination of kinetic energy and______. |
| A. | Heat energy |
| B. | Chemical energy |
| C. | Potential energy |
| D. | Nuclear energy |
| Answer» D. Nuclear energy | |
| 516. |
If an object executes 10 oscillations per second, then its frequency in kilohertz is equal to: |
| A. | 1 |
| B. | 10 |
| C. | 0.01 |
| D. | 0.1 |
| Answer» D. 0.1 | |
| 517. |
Compare rolling friction and sliding friction. |
| A. | Rolling friction is greater than sliding friction |
| B. | Rolling friction is either greater or equal to sliding friction |
| C. | Rolling friction is smaller than the sliding friction |
| D. | Rolling friction is always equal to sliding friction |
| Answer» D. Rolling friction is always equal to sliding friction | |
| 518. |
Calculate the wavelength of a soundwave where frequency is 200 Hz and speed is 400 ms-1 in a given medium. |
| A. | 0.5 m |
| B. | 0.2 m |
| C. | 20 m |
| D. | 2 m |
| Answer» E. | |
| 519. |
How many kilometres are there in one metre? |
| A. | 0.01 |
| B. | 0.0001 |
| C. | 0.1 |
| D. | 0.001 |
| Answer» E. | |
| 520. |
_______ is a unit of length, roughly the distance from Earth to the Sun. |
| A. | Kilometres |
| B. | Astronomical unit |
| C. | Kelvin |
| D. | Joule |
| Answer» C. Kelvin | |
| 521. |
A unit of power is called a ________. |
| A. | Watt |
| B. | Joule |
| C. | Newton |
| D. | Pascal |
| Answer» B. Joule | |
| 522. |
BTU is the measurement of ________. |
| A. | Temperature |
| B. | Area |
| C. | Volume |
| D. | Heat content |
| Answer» E. | |
| 523. |
In an experimental setup, the given substances like coconut oil, egg white, common salt and sand are mixed thoroughly with water in four 250 ml beakers respectively. Which one of them will show Tyndall effect? |
| A. | 20 mg of common salt in 200 ml of water |
| B. | 20 ml coconut oil in 200 ml of water |
| C. | 20 mg of sand in 200 ml of water |
| D. | 20 ml of egg white in 200 ml of water |
| Answer» E. | |
| 524. |
An object having the capability to do work is said to possess____________. |
| A. | Inertia |
| B. | Force |
| C. | Pressure |
| D. | Energy |
| Answer» E. | |
| 525. |
A source maintains a current I in a resistor of resistance R. If V is the potential difference across the resistor, the electrical energy dissipated in the resistor in time t is given by _____. |
| A. | V2 |
| B. | IR3t |
| C. | VIt |
| D. | VI2t |
| Answer» D. VI2t | |
| 526. |
An electric washing machine of 750 W is used for 4 hours per day. The energy consumed by the machine in one day will be ________. |
| A. | 30 units |
| B. | 3 units |
| C. | 3,000 units |
| D. | 300 units |
| Answer» C. 3,000 units | |
| 527. |
___________ never occurs singly in nature. |
| A. | Momentum |
| B. | Force |
| C. | Velocity |
| D. | Pressure |
| Answer» C. Velocity | |
| 528. |
Electric current is equal to ________. |
| A. | I = Q/t |
| B. | I = W/t |
| C. | I = π/t |
| D. | I = Ω/t |
| Answer» B. I = W/t | |
| 529. |
For a sound wave, frequency is 8800 Hz and speed is 352 m/s in a given medium. The wavelength of the wave is: |
| A. | 0.4 m |
| B. | 0.03 m |
| C. | 0.25 m |
| D. | 0.04 m |
| Answer» E. | |
| 530. |
Find the energy possessed by an object of mass 10 kg when it is at a height of 8 m above the ground. Given g = 9.8 ms-2 |
| A. | 784 J |
| B. | 588 J |
| C. | 520 J |
| D. | 528 J |
| Answer» B. 588 J | |
| 531. |
Complete the following sentence with the most appropriate option.Wind energy is considered ________ efficient than solar energy. |
| A. | sometimes |
| B. | never |
| C. | more |
| D. | often |
| Answer» D. often | |
| 532. |
If Lithium has two isotopes one of 6u and the other 7u and the average mass of lithium atom is 6.925u, then the abundances of the two isotopes of masses 6u and 7u is _______. |
| A. | 15% and 85% |
| B. | 30% and 70% |
| C. | 7.5% and 92.5% |
| D. | 20% and 80% |
| Answer» D. 20% and 80% | |
| 533. |
Electric Motor converts ________ energy into mechanical energy |
| A. | sound |
| B. | mechanical |
| C. | chemical |
| D. | electrical |
| Answer» E. | |
| 534. |
A foot ball bounces when it falls on the ground because? |
| A. | It is hollow |
| B. | It is made up of rubber |
| C. | It is very light and is able to overcome the resistance of air |
| D. | Of its property of elasticity |
| Answer» E. | |
| 535. |
In which of the following mediums, the speed of the sound will be maximum? |
| A. | Air |
| B. | Water |
| C. | Steel |
| D. | Kerosene |
| Answer» D. Kerosene | |
| 536. |
As the object covers equal distances in equal intervals of time, it is said to be in ________ motion. |
| A. | uniform |
| B. | linear |
| C. | translational |
| D. | equilibrium |
| Answer» B. linear | |
| 537. |
Momentum of a body depends upon ______. |
| A. | force acting on an object |
| B. | mass of an object |
| C. | both mass and velocity of an object |
| D. | velocity of an object |
| Answer» D. velocity of an object | |
| 538. |
If R be the range of alpha particles with energy E (in few MeV range), Geiger's law tells that R is proportional to: |
| A. | E1/2 |
| B. | E3/2 |
| C. | E-2 |
| D. | E-3 |
| Answer» C. E-2 | |
| 539. |
If a physical quantity has the units - ampere per meter squared, then what are it's dimensions? |
| A. | [AL-2] |
| B. | [IM-2] |
| C. | [IL-2] |
| D. | [AM-2] |
| Answer» D. [AM-2] | |
| 540. |
A lens behaves as diverging lens in air (μ = 1) and converging lens in water (μ = 1.3). The refractive index (μ) of the material of the lens is |
| A. | 1.0 < μ < 1.3 |
| B. | μ > 1.3 |
| C. | μ < 1.0 |
| D. | \(\mu = \frac{{1.0 + 1.3}}{2}\) |
| Answer» B. μ > 1.3 | |
| 541. |
Most penetrating radiation of radioactive element is |
| A. | α rays |
| B. | γ rays |
| C. | β rays |
| D. | X rays |
| Answer» C. β rays | |
| 542. |
Ampere is a unit of _________. |
| A. | Magnetic field |
| B. | Electric charge |
| C. | Light intensity |
| D. | Electric current |
| Answer» E. | |
| 543. |
An electrical appliance has a resistance of 25 Ω. When this electrical appliance is connected to a 230 V supply line, the current passing through it will be: |
| A. | 0.92 A |
| B. | 2.9 A |
| C. | 9.2 A |
| D. | 92 A |
| Answer» D. 92 A | |
| 544. |
Electromotive force represents ______. |
| A. | Resistance |
| B. | Power |
| C. | Energy per unit charge |
| D. | Current |
| Answer» D. Current | |
| 545. |
Kepler's first law is referred to as the law of ________. |
| A. | Ellipses |
| B. | Harmonies |
| C. | Equal areas |
| D. | Motion |
| Answer» B. Harmonies | |
| 546. |
According to the law of gravitation: |
| A. | Only the earth attracts the moon towards itself |
| B. | The earth and the moon both attract each other |
| C. | Only the moon attracts the earth towards itself |
| D. | There is no force of attraction between them |
| Answer» C. Only the moon attracts the earth towards itself | |
| 547. |
In a barometer mercury is preferred over water because? |
| A. | Mercury is available in pure form |
| B. | Mercury has high density and low vapour pressure |
| C. | Mercury is shining and therefore its level can be read easily |
| D. | Mercury is a good conductor of heat |
| Answer» C. Mercury is shining and therefore its level can be read easily | |
| 548. |
'g' (acceleration due to gravity) = ? |
| A. | GR2/M |
| B. | GM/R2 |
| C. | G/MR2 |
| D. | R2M/G |
| Answer» C. G/MR2 | |
| 549. |
Radioisotopes are? |
| A. | Isotopes used in radio sets |
| B. | Isotopes that are radioactive |
| C. | None of these |
| D. | Some nuclei which emit radiowaves |
| Answer» C. None of these | |
| 550. |
An object is stationary then the force is still acting on it is: |
| A. | Weight |
| B. | Momentum |
| C. | Acceleration |
| D. | Impulse |
| Answer» B. Momentum | |