MCQOPTIONS
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MCQOPTIONS
This section includes 625 Mcqs, each offering curated multiple-choice questions to sharpen your GK knowledge and support exam preparation. Choose a topic below to get started.
| 451. |
Which of the following alloys is used for making magnets ? |
| A. | Alnico |
| B. | Magnelium |
| C. | Duralumin |
| D. | Stainless Steel |
| Answer» B. Magnelium | |
| 452. |
The bending of light when it passes around a corner or a slit is due to ______. |
| A. | Diffraction |
| B. | Total internal reflection |
| C. | Reflection |
| D. | Refraction |
| Answer» B. Total internal reflection | |
| 453. |
Maxwell is the unit of - |
| A. | Magnetic susceptibility |
| B. | Intensity of magnetization |
| C. | Permeability |
| D. | Magnetic flux |
| Answer» E. | |
| 454. |
Endothermic reactions are those in which? |
| A. | Temperature increases |
| B. | Light is produced |
| C. | Heat is evolved |
| D. | Heat is absorbed |
| Answer» E. | |
| 455. |
Optical fibres are mainly used in? |
| A. | Musical Instruments |
| B. | Food Industry |
| C. | Communication |
| D. | Weaving |
| Answer» D. Weaving | |
| 456. |
Which is the largest human cell? |
| A. | Spleen |
| B. | Ovum |
| C. | Liver |
| D. | Skin |
| Answer» C. Liver | |
| 457. |
Narcolepsy is a disease related to |
| A. | Compulsive stealing habits |
| B. | Forgetting disorder |
| C. | Frequent attacks of epilepsy |
| D. | Excessive sleeping disorder |
| Answer» E. | |
| 458. |
Kidney Stones are composed of_____? |
| A. | Calcium Oxalate |
| B. | Potassium Chloride |
| C. | Aluminium Nitrate |
| D. | Sodium Bicarbonate |
| Answer» B. Potassium Chloride | |
| 459. |
Waves which do not require any material medium for their propagation are____? |
| A. | Matter Waves |
| B. | Mechanical Waves |
| C. | Elastic Waves |
| D. | Electromagnetic Waves |
| Answer» E. | |
| 460. |
Minamata disease is a nervous disorder caused by eating fish polluted by ____? |
| A. | Magnesium |
| B. | Lead |
| C. | Mercury |
| D. | Nickel |
| Answer» D. Nickel | |
| 461. |
What is the SI unit of Young s Modulus of Elasticity? |
| A. | Ohm |
| B. | Henry |
| C. | Pascal |
| D. | Hertz |
| Answer» D. Hertz | |
| 462. |
Which Chemical compound is called Pearl Ash? |
| A. | Potassium Chloride |
| B. | Potassium Bromide |
| C. | Potassium Sulphate |
| D. | Potassium Carbonate |
| Answer» E. | |
| 463. |
Which one of the following doesn t contain silver ? |
| A. | German Silver |
| B. | Horn Silver |
| C. | Red Silver |
| D. | Lunar Caustic |
| Answer» B. Horn Silver | |
| 464. |
Which of the following is a device designed to protect electrical devices from voltage spikes? |
| A. | Heat protector |
| B. | Voltage unloader |
| C. | Current unloader |
| D. | Surge protector |
| Answer» E. | |
| 465. |
In nuclear reactors, graphite is used as a____? |
| A. | Lubricant |
| B. | Fuel |
| C. | Moderator |
| D. | All of the above |
| Answer» D. All of the above | |
| 466. |
Which poisonous gas was released in Bhopal Gas Tragedy? |
| A. | Methyl Isocyanide |
| B. | Nitrous Oxide |
| C. | Methyl Isocyanate |
| D. | Cyanogen |
| Answer» D. Cyanogen | |
| 467. |
Cadmium pollution is associated with ____? |
| A. | Minamata Disease |
| B. | Black Foot Disease |
| C. | Dyslexia |
| D. | Itai-Itai |
| Answer» E. | |
| 468. |
Optical Fiber works on the principle of |
| A. | Diffusion |
| B. | Refraction |
| C. | Total Internal Reflection |
| D. | Scattering |
| Answer» D. Scattering | |
| 469. |
What is the chemical name of Chalk? |
| A. | Calcium Sulphate |
| B. | Calcium Nitrate |
| C. | Calcium Phosphide |
| D. | Calcium Carbonate |
| Answer» E. | |
| 470. |
The pregnancy period of Cat and Dog is approximately- |
| A. | 21 day |
| B. | 150 day |
| C. | 114 day |
| D. | 63 day |
| Answer» E. | |
| 471. |
Which gas is the most important component of Gobar gas? |
| A. | Ammonia |
| B. | Acetylene |
| C. | Methane |
| D. | Chlorine |
| Answer» D. Chlorine | |
| 472. |
Hydraulic break and hydraulic lift work on which theorem- |
| A. | Conservation law of momentum |
| B. | Pascal law |
| C. | Barnaul's Theorem |
| D. | Law of inertia |
| Answer» C. Barnaul's Theorem | |
| 473. |
What would be the time period of a pendulum, when taken to the Moon? |
| A. | Decrease |
| B. | Increase |
| C. | Remain the same |
| D. | Becomes the zero |
| Answer» C. Remain the same | |
| 474. |
Which of the following destroys the ozone layer? |
| A. | Carbon |
| B. | Chlorine |
| C. | Silicon |
| D. | Sulphur |
| Answer» C. Silicon | |
| 475. |
The number of isotopes in the hydrogen is: |
| A. | Four |
| B. | Five |
| C. | Two |
| D. | Three |
| Answer» E. | |
| 476. |
Which of the following is the lightest element? |
| A. | Helium |
| B. | Mercury |
| C. | Hydrogen |
| D. | Platinum |
| Answer» D. Platinum | |
| 477. |
Which of the following halogen is the least reactive element? |
| A. | Iodine |
| B. | Astatine |
| C. | fluorine |
| D. | Bromine |
| Answer» C. fluorine | |
| 478. |
Which one among the following nontoxic gases helps in formation of enzymes which ripen fruit? |
| A. | Acetylene |
| B. | Ethane |
| C. | Methane |
| D. | Carbon dioxide |
| Answer» B. Ethane | |
| 479. |
Elements of d-block are called |
| A. | Transition element |
| B. | Transuranic elements |
| C. | Metals |
| D. | Metalloids |
| Answer» B. Transuranic elements | |
| 480. |
No current will flow between two charged bodies if they have the same ________. |
| A. | Resistance |
| B. | Charge |
| C. | Potential |
| D. | charge/ potential ratio |
| Answer» D. charge/ potential ratio | |
| 481. |
What would remain unchanged if a sound travels from air to water ? |
| A. | intensity |
| B. | Frequency |
| C. | Both a and b |
| D. | Neither a nor b |
| Answer» C. Both a and b | |
| 482. |
The metal present in insulin is |
| A. | Copper |
| B. | Iron |
| C. | Zinc |
| D. | Magnesium |
| Answer» D. Magnesium | |
| 483. |
Which of the following is also called Marsh Gas? |
| A. | Propane |
| B. | Ethane |
| C. | Methane |
| D. | Butane |
| Answer» D. Butane | |
| 484. |
As the frequency of a wave increases, what happens to its wavelength? |
| A. | It increases |
| B. | It remains the same |
| C. | It decreases |
| D. | There is no connection between the two |
| Answer» D. There is no connection between the two | |
| 485. |
Cotton fiber are made of |
| A. | Protein |
| B. | cellulose |
| C. | Fats |
| D. | Lipid |
| Answer» C. Fats | |
| 486. |
Color of light is determined by its : |
| A. | dimension |
| B. | wavelength |
| C. | Intensity |
| D. | Velocity |
| Answer» C. Intensity | |
| 487. |
Which of the following is not a vector quantity ? |
| A. | Torque |
| B. | Displacement |
| C. | Speed |
| D. | None of the above |
| Answer» D. None of the above | |
| 488. |
A person of which of the following blood group is called a universal donor? |
| A. | O+ |
| B. | O- |
| C. | AB+ |
| D. | AB- |
| Answer» C. AB+ | |
| 489. |
Atomic weight of an element is compared with which of the following to get the atomic weight of that element? |
| A. | Oxygen |
| B. | Carbon |
| C. | Hydrogen |
| D. | Nitrogen |
| Answer» D. Nitrogen | |
| 490. |
Science of the study of preserved remains or traces of animals, plants, and other organisms from the remote past is called ________. |
| A. | Anthropology |
| B. | Archaeology |
| C. | Palaeontology |
| D. | Pharmacology |
| Answer» D. Pharmacology | |
| 491. |
Which element is used as timekeeper in the atomic clocks? |
| A. | Potassium |
| B. | Magnesium |
| C. | Cesium |
| D. | Vanadium |
| Answer» D. Vanadium | |
| 492. |
Which of the following metals is used in spacecraft to tolerate high temperatures? |
| A. | Fe |
| B. | Ti |
| C. | Ni |
| D. | Pb |
| Answer» C. Ni | |
| 493. |
Octane number is a measure of the quality of |
| A. | Kerosene oil |
| B. | Perfumed oil |
| C. | Edible oils |
| D. | Petrol |
| Answer» E. | |
| 494. |
Which date is known as ' Diabetes Day? |
| A. | 14 September |
| B. | 14 November |
| C. | 14 February |
| D. | 14 May |
| Answer» C. 14 February | |
| 495. |
If the velocity of a body is doubled its kinetic energy |
| A. | Gets doubled |
| B. | Becomes half |
| C. | Does not change |
| D. | Becomes 4 times |
| Answer» E. | |
| 496. |
One horse power is equal to |
| A. | 790 watts |
| B. | 700 watts |
| C. | 720 watts |
| D. | 746 watts |
| Answer» E. | |
| 497. |
A device, which is used in our TV set, computer, radio set for storing the electric charge, is |
| A. | Resistor |
| B. | Inductor |
| C. | Conductor |
| D. | Capacitor |
| Answer» E. | |
| 498. |
A rectifier is an electronic device used to convert |
| A. | AC voltage into DC voltage |
| B. | DC voltage into AC voltage |
| C. | Sinusoidal pulse into square pulse |
| D. | None of the above |
| Answer» B. DC voltage into AC voltage | |
| 499. |
When ice melts, its |
| A. | Volume increases |
| B. | Volume decreases |
| C. | Volume and mass both decrease |
| D. | Volume decreases while mass increases |
| Answer» C. Volume and mass both decrease | |
| 500. |
The gas usually filled in the electric bulb is. |
| A. | $$N_2$$ |
| B. | $$CO_2$$ |
| C. | $$H_2$$ |
| D. | $$O_2$$ |
| Answer» B. $$CO_2$$ | |