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.
| 1601. |
If the speed of a straight line moving object changes, its speed is called _______. |
| A. | Changed |
| B. | Nonlinear |
| C. | accelerated |
| D. | Linear |
| Answer» B. Nonlinear | |
| 1602. |
On heating, solid is directly converted into a gaseous state. This process is called _______. |
| A. | Sublimation |
| B. | Evaporation |
| C. | Diffusion |
| D. | Condensation |
| Answer» B. Evaporation | |
| 1603. |
Compressions and rarefactions are due to variability of ________ |
| A. | Magnetic difference |
| B. | Ray refraction |
| C. | Air pressure |
| D. | Temperature difference |
| Answer» D. Temperature difference | |
| 1604. |
Isotopes are elements with |
| A. | Same mass number but different atomic numbers |
| B. | Same atomic number but different mass numbers |
| C. | Same ratio of protons is to neutrons in the nucleus |
| D. | Same number of highest orbital quantum number |
| Answer» C. Same ratio of protons is to neutrons in the nucleus | |
| 1605. |
Each centimeter has ten equal divisions called ______. |
| A. | Meter |
| B. | Micrometer |
| C. | Decimeter |
| D. | Millimeter |
| Answer» E. | |
| 1606. |
Mass/Volume = ________ |
| A. | Pressure |
| B. | Area |
| C. | Density |
| D. | Force |
| Answer» D. Force | |
| 1607. |
If two vectors \(\vec A\;and\;\vec B\) are at an angle θ ≠ 0°, then _________. |
| A. | \(\left| {\vec A} \right| + \left| {\vec B} \right| = \left| {\vec A + \vec B} \right|\) |
| B. | \(\left| {\vec A} \right| + \left| {\vec B} \right| > \left| {\vec A + \vec B} \right|\) |
| C. | \(\left| {\vec A} \right| + \left| {\vec B} \right| < \left| {\vec A + \vec B} \right|\) |
| D. | \(\left| {\vec A} \right| + \left| {\vec B} \right| = \left| {\vec A - \vec B} \right|\) |
| Answer» E. | |
| 1608. |
A hydrogen bomb creates devastating explosion because of |
| A. | nuclear fission and nuclear fusion |
| B. | nuclear fission |
| C. | the use of the cryogenic hydrogen |
| D. | the use of ultra pressed hydrogen |
| Answer» B. nuclear fission | |
| 1609. |
A spherical mirror and a thin spherical lens both have a focal length of -10 cm. The mirror and the lens are likely to be- |
| A. | The mirror is convex and the lens is concave |
| B. | Both convex |
| C. | Both concave |
| D. | the mirror is concave and the lens is convex |
| Answer» D. the mirror is concave and the lens is convex | |
| 1610. |
Density of the material of a substance is its mass divided by _______. |
| A. | surface area |
| B. | volume |
| C. | specific gravity |
| D. | square of surface area |
| Answer» C. specific gravity | |
| 1611. |
A body of 20 kg is lying at rest. Under the action of a constant force, it gains a speed of 7 m/s. The work done by the force will be _______. |
| A. | 490J |
| B. | 500J |
| C. | 390J |
| D. | 430J |
| Answer» B. 500J | |
| 1612. |
A ball thrown up vertically returns to the ground after 12.5 second. Find the velocity with which it was thrown up? (g = 10 ms-2) |
| A. | 62.5 ms-1 |
| B. | 65 ms-1 |
| C. | 12.5 ms-1 |
| D. | 10 ms-1 |
| Answer» B. 65 ms-1 | |
| 1613. |
Angular momentum is |
| A. | Moment of momentum |
| B. | Product of mass and angular velocity |
| C. | Product of moment of inertia and velocity |
| D. | Moment of angular motion |
| Answer» D. Moment of angular motion | |
| 1614. |
Half life of Sodium-24 is 15 hours. How much Sodium (in gm) will be left out of 0.25gm after 30 hours? |
| A. | 0.125 |
| B. | 0.03125 |
| C. | 0.0625 |
| D. | 0.015625 |
| Answer» D. 0.015625 | |
| 1615. |
A "Light Year" is a measure of: |
| A. | Atmospheric Conditions |
| B. | Light |
| C. | Distance |
| D. | Formation of Stars |
| Answer» D. Formation of Stars | |
| 1616. |
Farad is the unit of _______ |
| A. | electric conductance |
| B. | capacitance |
| C. | magnetic flux |
| D. | magnetic flux density |
| Answer» C. magnetic flux | |
| 1617. |
An image that cannot be obtained on a screen is called a/an_______. |
| A. | erect image |
| B. | virtual image |
| C. | real image |
| D. | inverted image |
| Answer» C. real image | |
| 1618. |
Approximately how much is the velocity of sound in the air? |
| A. | 112 m/s |
| B. | 224 m/s |
| C. | 330 m/s |
| D. | 430 m/s |
| Answer» D. 430 m/s | |
| 1619. |
'Light-year' is a unit of |
| A. | time |
| B. | speed |
| C. | distance |
| D. | intensity of light |
| E. | None of the above / More than one of the above |
| Answer» D. intensity of light | |
| 1620. |
At which point of the Earth is there no gravity? |
| A. | At North and South Pole |
| B. | At equator |
| C. | On the ocean surface |
| D. | At centre of the Earth |
| Answer» E. | |
| 1621. |
Law of Inertia is also known as _____ |
| A. | Newton's fist law of motion |
| B. | Newton's second law of motion |
| C. | Newton's third law of motion |
| D. | None of these |
| Answer» B. Newton's second law of motion | |
| 1622. |
Dioptre is unit of ________. |
| A. | Power of a lens |
| B. | The focal length of a lens |
| C. | Intensity of light |
| D. | Intensity of sound |
| Answer» B. The focal length of a lens | |
| 1623. |
A block of mass 10 kg accelerates uniformly from rest to a speed of 2 m/s in 20 s. The average power developed in time interval of 0 to 20 seconds is: |
| A. | 1.5 W |
| B. | 0.5 W |
| C. | 2 W |
| D. | 1 W |
| Answer» E. | |
| 1624. |
In a nuclear reactor, ceramics can be used as |
| A. | coolants |
| B. | fuel |
| C. | shields |
| D. | moderator |
| Answer» C. shields | |
| 1625. |
In a nuclear fission, the difference in mass, Δm between the original nucleus and the product nuclei gets converted to energy E at a rate governed by the famous equation, E = Δm c2, first derived by ______ in 1905. |
| A. | Galileo Galilei |
| B. | Marie Curie |
| C. | Albert Einstein |
| D. | Isaac Newton |
| Answer» D. Isaac Newton | |
| 1626. |
Humidity is a measure of the ________. |
| A. | Pressure in the air |
| B. | Viscosity of the air |
| C. | Air resistance |
| D. | Moisture in air |
| Answer» E. | |
| 1627. |
1n0 + 235U92 → 144Cs55 + yRb37 + 21n0. Find 'y' from the given fission equation of an uranium nucleus? |
| A. | 90 |
| B. | 88 |
| C. | 89 |
| D. | 91 |
| Answer» B. 88 | |
| 1628. |
Electricity charged particles from space travelling at speeds of several hundred km/sec can severely harm living beings if they reach the surface of the Earth. What prevents them from reaching the surface of the Earth? |
| A. | The Earth's magnetic field diverts them towards its poles |
| B. | Ozone layer around the Earth reflects them back to outer space |
| C. | Moisture in the upper layers of atmosphere prevents them from reaching the surface of the Earth |
| D. | None of the statements (a), (b) and (c) given above is correct |
| Answer» C. Moisture in the upper layers of atmosphere prevents them from reaching the surface of the Earth | |
| 1629. |
A parallel-plate capacitor, with air in between the plates, has capacitance C. Now the space between the two plates of the capacitor is filled with a dielectric of dielectric constant 7. Then the value of the capacitance will become |
| A. | C |
| B. | C/7 |
| C. | 7C |
| D. | 14C |
| Answer» D. 14C | |
| 1630. |
A particle is fired vertically upwards with a speed of √0.8 ve, where ve is the escape velocity. If the radius of the earth is R, then the maximum height attained by the particle will be _________. |
| A. | 2R |
| B. | 3R |
| C. | 4R |
| D. | R |
| Answer» D. R | |
| 1631. |
A steam engine delivers 5.4 x 108 J of work per minute by taking 3.6 x 109 J of heat from its source. What is the efficiency of the engine? |
| A. | 15% |
| B. | 12.5% |
| C. | 85% |
| D. | 87.5% |
| Answer» B. 12.5% | |
| 1632. |
In a certain region, as the wind speed increases, air pressure ____. |
| A. | decreases |
| B. | increases |
| C. | remains constant |
| D. | increases up to a certain limit and then decreases |
| Answer» B. increases | |
| 1633. |
In which of the following is the speed of sound faster? |
| A. | Wood |
| B. | Air |
| C. | Water |
| D. | Metal |
| Answer» E. | |
| 1634. |
How many watts are there in one horsepower? |
| A. | 746 Watt |
| B. | 766 Watt |
| C. | 756 Watt |
| D. | 736 Watt |
| Answer» B. 766 Watt | |
| 1635. |
An ice block is left to melt on a metal tray. When the ice block melts___________. |
| A. | The temperature of the metal tray decreases |
| B. | The temperature of the metal tray increases |
| C. | The temperature of the ice block melts above 0° C |
| D. | The temperature of the ice block is below 0° C |
| Answer» B. The temperature of the metal tray increases | |
| 1636. |
Atoms of the same element with different masses are called __________. |
| A. | isobars |
| B. | isotopes |
| C. | isomers |
| D. | isotones |
| Answer» C. isomers | |
| 1637. |
If the current flowing through a circuit is 0.6 A for 6 mins, the amount of electric charge flowing through it is ______. |
| A. | 360 C |
| B. | 216 C |
| C. | 60 C |
| D. | 36 C |
| Answer» C. 60 C | |
| 1638. |
Loudness of sound depends upon which of the following? |
| A. | Frequency |
| B. | Wavelength |
| C. | Amplitude |
| D. | Overtones |
| Answer» D. Overtones | |
| 1639. |
A boat at anchor is rocked by waves whose consecutive crests are 125 m apart. The velocity of the wave of the moving crests is 25 ms-1. What is the frequency of the rocking of the boat? |
| A. | 0.20 (Hz) |
| B. | 100 (Hz) |
| C. | 625 (Hz) |
| D. | 250 (Hz) |
| Answer» B. 100 (Hz) | |
| 1640. |
______ is the ratio between mass and volume or mass per unit volume. |
| A. | Length |
| B. | Density |
| C. | Volume |
| D. | Pressure |
| Answer» C. Volume | |
| 1641. |
A boy of mass 50 kg runs up a staircase of 45 steps in 9 s. If the height of each step is 15 cm, find his power. Given, g = 10 ms-2 |
| A. | 375 W |
| B. | 275 W |
| C. | 275 J |
| D. | 375 J |
| Answer» B. 275 W | |
| 1642. |
An object travels northwards with a constant velocity. The net force acting on the object will be |
| A. | towards the south |
| B. | towards the east |
| C. | zero |
| D. | towards the north |
| Answer» D. towards the north | |
| 1643. |
_______ never occurs singly in nature. |
| A. | Force |
| B. | Momentum |
| C. | Velocity |
| D. | Pressure |
| Answer» B. Momentum | |
| 1644. |
A GM counter is used for detecting? |
| A. | Radioactivity |
| B. | Underground water |
| C. | Underground oil |
| D. | Coal |
| Answer» B. Underground water | |
| 1645. |
In which of the following media does sound travel the fastest? |
| A. | Gases |
| B. | Vacuum |
| C. | Liquids |
| D. | Solids |
| Answer» E. | |
| 1646. |
An object of mass 15 kg is moving with a uniform velocity of 5 ms-1. What is the kinetic energy possessed by the object. |
| A. | 187.5 ms |
| B. | 187.5 J |
| C. | 180.5 J |
| D. | 17.5 J |
| Answer» C. 180.5 J | |
| 1647. |
Match the type of nuclear radiation with its ionizing power.Type of nuclear radiationlonizing PowerA. Alpha1. Very highB. Beta2. LowC. Gamma3. Moderate |
| A. | A - 1, B - 3, C - 2 |
| B. | A - 2, B - 3, C - 1 |
| C. | A - 3, B - 2, C - 1 |
| D. | A - 3, B - 1, C - 2 |
| Answer» B. A - 2, B - 3, C - 1 | |
| 1648. |
1 Joule = ? |
| A. | 1 Newton × 1 Meter |
| B. | 1 Watt × 1 Meter |
| C. | 1 Erg × 1 Meter |
| D. | 1 Pascal × 1 Meter |
| Answer» B. 1 Watt × 1 Meter | |
| 1649. |
Consider the following statements in the context of levers of third-order:a) In these levers, the effort is in between the fulcrum and load (weight).b) The mechanical advantage of this kind of levers is more than one.c) Tweezer and human arm holding weight on the palm are an example of levers of the third order.The correct statement(s) is/are: |
| A. | Only (a) |
| B. | (a) and (b) |
| C. | (b) and (c) |
| D. | (a) and (c) |
| Answer» E. | |
| 1650. |
Objects move with a constant speed when no _______ is acting on it. |
| A. | pressure |
| B. | inertia |
| C. | force |
| D. | momentum |
| Answer» D. momentum | |