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.
| 1801. |
For the rear view, motorists use? |
| A. | Convex mirror |
| B. | Cylindrical mirror |
| C. | Plane mirror |
| D. | Concave mirror |
| Answer» B. Cylindrical mirror | |
| 1802. |
Aman keeps a plastic bottle, a wooden spoon and a metallic spoon in a closed room overnight. The room temperature is 30 °C. In the morning he records the temperatures of the three objects as T1, T2 and T3. Which of the following most likely represents the relation between them? |
| A. | T1 = T2 = T3 |
| B. | T3 > T2 > T1 |
| C. | T1 = T2 < T3 |
| D. | T1 > T2 > T3 |
| Answer» B. T3 > T2 > T1 | |
| 1803. |
If the frequency of a sound wave is 100 Hz, then what is its time period? |
| A. | 0.01 second |
| B. | 1 second |
| C. | 10 seconds |
| D. | 0.1 second |
| Answer» B. 1 second | |
| 1804. |
In wind power which form of energy is converted into electrical energy? |
| A. | Kinetic energy |
| B. | Potential energy |
| C. | Solar energy |
| D. | Radiant energy |
| Answer» B. Potential energy | |
| 1805. |
Consider a planet whose mass and radius are both twice the mass and radius of Earth. The acceleration due to gravity on the surface of the planet is n times that on Earth. The value of n is: |
| A. | 1 |
| B. | 4 |
| C. | \(\frac{1}{2}\) |
| D. | 2 |
| Answer» D. 2 | |
| 1806. |
Raman effect is due to: |
| A. | Inelastic collision of photon with e- |
| B. | Elastic collision of photon with e- |
| C. | Inelastic collision of photon with molecule |
| D. | Elastic collision of photon with molecule |
| Answer» D. Elastic collision of photon with molecule | |
| 1807. |
A galvanometer is used to: |
| A. | detect the direction of light |
| B. | detect the direction of the sound |
| C. | detect the direction of the current |
| D. | detect the direction of magnetic induction |
| Answer» D. detect the direction of magnetic induction | |
| 1808. |
In an unbiased p - n junction |
| A. | Potential at p is more than that at n |
| B. | Potential at p is less than that at n |
| C. | Potential at p is equal to that at n |
| D. | Potential at p is +ve and that at n is -ve |
| Answer» B. Potential at p is less than that at n | |
| 1809. |
In a flask of volume ‘V’ litres, 0.2 moles of O2, 0.4 moles of N2, 0.1 moles of NH3 and 0.3 moles of He gases are present at 27°C. If the total pressure exerted by these non-reacting gases is 1 atm, the partial pressure exerted by N2 gas is: |
| A. | 0.3 atm |
| B. | 0.1 atm |
| C. | 0.2 atm |
| D. | 0.4 atm |
| Answer» E. | |
| 1810. |
A man takes 30 minutes to cover a distance of 6.4 kilometers due east on a bicycle. His velocity in kilometers / hour will be |
| A. | 3.2 |
| B. | 12.8 |
| C. | 25.6 |
| D. | 6.4 |
| Answer» C. 25.6 | |
| 1811. |
A mobile phone charger is |
| A. | An inverter |
| B. | A UPS |
| C. | A step up transformer |
| D. | A step down transformer |
| Answer» E. | |
| 1812. |
Rain drops are spherical due to |
| A. | Viscosity of water |
| B. | Surface tension |
| C. | Continuous evaporation |
| D. | Air friction |
| Answer» C. Continuous evaporation | |
| 1813. |
Fluids offer resistance to motion due to internal friction, this property is called ________. |
| A. | viscosity |
| B. | buoyancy |
| C. | specific gravity |
| D. | continuity |
| Answer» B. buoyancy | |
| 1814. |
A car accelerates uniformly from 18 kmh-1 to 72 kmh-1 in 10 s. Calculate the acceleration of the car. |
| A. | 1.5 ms2 |
| B. | 15 ms-2 |
| C. | 15 ms-1 |
| D. | 1.5 ms-2 |
| Answer» E. | |
| 1815. |
A resistor of 10 Ω connected across a cell of emf 12 V, draws the current of 1.1 A. Find the internal resistance of the cell. |
| A. | 10 Ω |
| B. | 0.1 Ω |
| C. | 10.9 Ω |
| D. | 0.91 Ω |
| Answer» E. | |
| 1816. |
A particle is actuated by a force of constant magnitude which is always perpendicular to the velocity of the particle, the velocity of the particle is on a flat surface. It follows that |
| A. | Its acceleration is constant. |
| B. | Its kinetic energy is constant. |
| C. | Its distance is constant |
| D. | Its velocity is constant. |
| Answer» C. Its distance is constant | |
| 1817. |
Identify the variable from below that does not describe the behaviour of a gas. |
| A. | Temperature |
| B. | Volume |
| C. | Pressure |
| D. | Time |
| Answer» E. | |
| 1818. |
A body of mass 5 kg has momentum of 10 kg m/s. When a force of 0.1 N is applied on it for 10 seconds, the change in its kinetic energy is: |
| A. | 1.1 J |
| B. | 4.4 J |
| C. | 2.1 J |
| D. | 1.4 J |
| Answer» D. 1.4 J | |
| 1819. |
Name the external force that acts radially inward during the circular motion of a body. |
| A. | Centripetal force |
| B. | Centrifugal force |
| C. | Gravitational force |
| D. | Inertial force |
| Answer» B. Centrifugal force | |
| 1820. |
As temperature rises, particles of matter |
| A. | Move faster |
| B. | Move slower |
| C. | No change w.r.t. temperature |
| D. | None of the above |
| Answer» B. Move slower | |
| 1821. |
A soap bubble of radius 25 mm has inside pressure 25 N/m2 above atmospheric pressure. The surface tension in the soap film will be: |
| A. | 0.156 N/m |
| B. | 2.156 N/m |
| C. | 0 N/m |
| D. | 1.156 N/m |
| Answer» B. 2.156 N/m | |
| 1822. |
A car is moving at a high speed. Which energy does it possess? |
| A. | Potential energy |
| B. | Frictional energy |
| C. | Gravitational force |
| D. | Kinetic energy |
| Answer» E. | |
| 1823. |
_________ varies directly with vibrating body's amplitude. |
| A. | Loudness of sound |
| B. | Modulation of sound |
| C. | Quality of sound |
| D. | Tone of the sound |
| Answer» B. Modulation of sound | |
| 1824. |
After a shower of rain, a rainbow is seen? |
| A. | Towards the sun |
| B. | Anywhere, irrespective of the position of the sun |
| C. | Opposite of the sun |
| D. | Even in the absence of the sun |
| Answer» D. Even in the absence of the sun | |
| 1825. |
Pressure × Area = ________. |
| A. | Thrust |
| B. | Inertia |
| C. | Momentum |
| D. | Volume |
| Answer» B. Inertia | |
| 1826. |
Energy of the electron revolving around the nucleus in second orbit is - 3.4 V. What is its energy in third orbit? |
| A. | - 1.51 J |
| B. | - 3.4 eV |
| C. | - 1.51 eV |
| D. | - 13.6 eV |
| Answer» D. - 13.6 eV | |
| 1827. |
In which of the following areas will the value of 'g' (gravity) be the highest? |
| A. | On top of mount everest |
| B. | Over the Qutub Minar |
| C. | At the equator |
| D. | In the Antarctic Camp |
| Answer» E. | |
| 1828. |
An object is covering distance in direct proportion to the square of time elapsed. What conclusion can be drawn about the motion of the object? |
| A. | The object is moving with zero acceleration. |
| B. | The acceleration of the object is constant. |
| C. | The object is moving with increasing acceleration. |
| D. | The object is moving with decreasing acceleration. |
| Answer» C. The object is moving with increasing acceleration. | |
| 1829. |
A piece of paper is placed below a heavy book. When the paper is pulled fast, the book will not move with the paper due to the________. |
| A. | Higher momentum of the book |
| B. | Inertia of motion of the paper |
| C. | Inertia of direction of the book |
| D. | Inertia of rest of the book |
| Answer» E. | |
| 1830. |
In the context of LED what does D stand for? |
| A. | Disk |
| B. | Diode |
| C. | Decode |
| D. | Desk |
| Answer» C. Decode | |
| 1831. |
If we start with 'x' mg of Radon-222 and are left with 0.1 mg after 16 hours given that half life of Radon-222 is 4 hours, how much is 'x'? |
| A. | 0.8 |
| B. | 0.4 |
| C. | 1.6 |
| D. | 0.016 |
| Answer» D. 0.016 | |
| 1832. |
An ice cube is floating in a glass of water. What happens to the water level when the ice melts? |
| A. | First falls and then rises |
| B. | Falls |
| C. | Remains same |
| D. | First rises and then falls |
| Answer» D. First rises and then falls | |
| 1833. |
A current I flows through a resistor. A source maintains a potential difference of V across the resistor. The energy supplied by the source in time t is: |
| A. | V I t2 |
| B. | V I |
| C. | V I t |
| D. | V I/ t |
| Answer» D. V I/ t | |
| 1834. |
1 km/hr equals ________ m/s. |
| A. | 5/18 |
| B. | 18/5 |
| C. | 5/16 |
| D. | 16/5 |
| Answer» B. 18/5 | |
| 1835. |
1n0 + 235U92 → yXe54 + 94Sr38 + 21n0. Find y from the given fission equation of an uranium nucleus? |
| A. | 140 |
| B. | 138 |
| C. | 139 |
| D. | 141 |
| Answer» B. 138 | |
| 1836. |
Copper expands about _____ times more than glass for the same rise in the temperature. |
| A. | six |
| B. | three |
| C. | four |
| D. | five |
| Answer» E. | |
| 1837. |
In the formula M = hi/ho, what do m, hi and ho represent? |
| A. | M – Mass, hi – Height of reflection, ho - Height of object |
| B. | M – Magnification, hi – Height of object, ho - Height of reflection |
| C. | M – Magnification, hi – Height of reflection, ho - Height of object |
| D. | M – Mass, hi –Height of object, ho - Height of reflection |
| Answer» D. M – Mass, hi –Height of object, ho - Height of reflection | |
| 1838. |
A copper wire of radius r and length l has a resistance of R. A second copper wire with radius 2r and length l is taken, and the two wires are joined in a parallel combination. The resultant resistance of the parallel combination of the two wires will be |
| A. | 5R |
| B. | 5 / 4R |
| C. | 4 / 5R |
| D. | R / 5 |
| Answer» E. | |
| 1839. |
Identify the one that is not a Class 1 lever. |
| A. | Scissors |
| B. | Pliers |
| C. | See-saw |
| D. | Nut cracker |
| Answer» E. | |
| 1840. |
Find the potential energy gained by a body of mass 60 kg, if it is raised by 12 m. (use g = 10 m/s2) |
| A. | 7200 |
| B. | 50 |
| C. | 3600 |
| D. | 25 |
| Answer» B. 50 | |
| 1841. |
A solid sphere, disc and solid cylinder all of the same mass and made of same material are allowed to roll down (from rest) on inclined plane then |
| A. | Disc will reach the bottom first |
| B. | Solid sphere will reach the bottom first |
| C. | Solid cylinder will reach the bottom first |
| D. | All of them will reach the bottom at the same time |
| Answer» C. Solid cylinder will reach the bottom first | |
| 1842. |
1 Horsepower is equal to ________ watts. |
| A. | 746 |
| B. | 735 |
| C. | 686 |
| D. | 628 |
| Answer» B. 735 | |
| 1843. |
A man's mass is 72 kg on the earth. His mass on the moon will be: |
| A. | 36 kg |
| B. | 12 kg |
| C. | 16 kg |
| D. | 72 kg |
| Answer» E. | |
| 1844. |
How much pressure would be exerted by a solid cube of height 50 cm and weight 25N when it is placed on a table ? |
| A. | 100 Pa |
| B. | 250 Pa |
| C. | 500 pa |
| D. | 1000 Pa |
| Answer» B. 250 Pa | |
| 1845. |
A vector is a physical quantity which has: |
| A. | Mass and volume |
| B. | Density and tension |
| C. | Inertia and stress |
| D. | Magnitude and direction |
| Answer» E. | |
| 1846. |
Choose correct statements from the following:a. Sound waves travel faster in solids than in gases.b. Sound waves travel fastest through vacuumc. Sound waves are longitudinal wavesd. Sound waves travel slower in gases than in liquids. |
| A. | a, c and d only |
| B. | a and b only |
| C. | c and d only |
| D. | b and d only |
| Answer» B. a and b only | |
| 1847. |
One should use porcelain and not metal containers in a microwave oven because _______A. Charge may accumulate on the metal surface and there is danger of getting a shock.B. Porcelain vessels are better conductors of heat and thus food gets cooked quickly.C. Porcelain vessels have a high melting point.D. Porcelain vessels are cheaper than the metal containers. |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» B. B | |
| 1848. |
A person suffering from shortsightedness can see objects lying in between 20 cm to 100 cm. To see objects lying at infinity he has to use which lens and of what focal length? |
| A. | Concave lens, 20 cm |
| B. | Convex lens, 80 cm |
| C. | Convex lens, 120 cm |
| D. | Concave lens, 100 cm |
| Answer» E. | |
| 1849. |
Becquerel is the unit of measurement of _____. |
| A. | Radioactivity |
| B. | Velocity |
| C. | conductivity |
| D. | Resistivity |
| Answer» B. Velocity | |
| 1850. |
[PV = Constant] is called ___________. |
| A. | Ohm's law |
| B. | Boyle's law |
| C. | Newton's law |
| D. | Snell's law |
| Answer» C. Newton's law | |