MCQOPTIONS
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MCQOPTIONS
This section includes 621 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge (GK) knowledge and support exam preparation. Choose a topic below to get started.
| 451. |
Alcohol prepared by the distillation of wood is: |
| A. | Propyl alcohol |
| B. | Methyl alcohol |
| C. | Ethyl alcohol |
| D. | Glycerolx |
| Answer» C. Ethyl alcohol | |
| 452. |
Study of Fossils is known as? |
| A. | Paleontology |
| B. | Petrology |
| C. | Seismology |
| D. | None of the above |
| Answer» B. Petrology | |
| 453. |
Energy use in solar cookers, solar distillation plants, solar power plants is known as |
| A. | chemical energy |
| B. | solar energy |
| C. | thermal energy |
| D. | nuclear energy |
| Answer» C. thermal energy | |
| 454. |
One carat of diamond is equal to - |
| A. | 100mg |
| B. | 150mg |
| C. | 200mg |
| D. | 250mg |
| Answer» D. 250mg | |
| 455. |
Bone ash contains - |
| A. | Calcium sulphate |
| B. | Phosphoric sulphate |
| C. | Calcium phosphate |
| D. | Calcium hypophosphate |
| Answer» D. Calcium hypophosphate | |
| 456. |
The most abundant element is - |
| A. | Calcium |
| B. | Silicon |
| C. | Oxygen |
| D. | Nitrogen |
| Answer» D. Nitrogen | |
| 457. |
Humburger effect is otherwise known as- |
| A. | Sodium pump |
| B. | Anaerobic metabolism |
| C. | Choloride shift |
| D. | Respiratory product |
| Answer» D. Respiratory product | |
| 458. |
Soap helps in better cleaning of clothes because - |
| A. | Soap acts like catalyst |
| B. | It reduces the surface tension of solution |
| C. | It gives strength to solution |
| D. | It absorbs the dirt |
| Answer» C. It gives strength to solution | |
| 459. |
The wine is prepared by the process of |
| A. | fermentation |
| B. | catalysation |
| C. | conjugation |
| D. | displacement |
| Answer» B. catalysation | |
| 460. |
n electrochemical cell which is used as a source of direct electrical current at constant voltage under standard conditions is called a |
| A. | Power transmittor |
| B. | Battery |
| C. | Uninterrupted power supply (UPS) |
| D. | Generator |
| Answer» D. Generator | |
| 461. |
"Fire-fighting clothes" are made from |
| A. | Mica |
| B. | Asbestos |
| C. | Talc |
| D. | Steatite |
| Answer» C. Talc | |
| 462. |
The wine is prepared by the process of - |
| A. | fermentation |
| B. | catalysation |
| C. | conjugation |
| D. | displacement |
| Answer» B. catalysation | |
| 463. |
Which one is the pure element? |
| A. | glass |
| B. | cement |
| C. | sodium |
| D. | none of these |
| Answer» D. none of these | |
| 464. |
The ratio of pure gold in 18 carat gold is - |
| A. | 100% |
| B. | 80% |
| C. | 75% |
| D. | 60% |
| Answer» D. 60% | |
| 465. |
Sodium calcium silicate is called. |
| A. | Hard glass |
| B. | Borosilicate glass |
| C. | Soft glass |
| D. | Jena glass |
| Answer» D. Jena glass | |
| 466. |
The ratio of Pure gold and 18 carot gold is |
| A. | 60% |
| B. | 75% |
| C. | 80% |
| D. | 100% |
| Answer» C. 80% | |
| 467. |
The element found in the surface of the Moon is |
| A. | Tin |
| B. | Tungsten |
| C. | Tantalum |
| D. | Titanium |
| Answer» E. | |
| 468. |
Th effect or response produced by two or more chemicals are less than the sum of the effects or response that the chemical would produce individually is known as - |
| A. | Antagonism |
| B. | Independent |
| C. | Additive |
| D. | Synergism |
| Answer» B. Independent | |
| 469. |
Energy is continuously generated in the sun due to . |
| A. | Nuclear fusion |
| B. | Nuclear fission |
| C. | Radioactivity |
| D. | Artificial radioactivity |
| Answer» B. Nuclear fission | |
| 470. |
Who is regarded as father of modern chemistry? |
| A. | Ruterford |
| B. | Einstein |
| C. | Lavoisier |
| D. | C.V. Raman |
| Answer» D. C.V. Raman | |
| 471. |
A gas used as a disinfectant in drinking water is - |
| A. | Hydrogen |
| B. | Oxygen |
| C. | Fluorine |
| D. | Chlorine |
| Answer» E. | |
| 472. |
"All the four quantum numbers of two electrons in an atom are not the same." It is the law of |
| A. | Hund s |
| B. | Exclusion Principle of Pauli |
| C. | Uncertainty Principle of Giesenberg |
| D. | Avogadro s law |
| Answer» C. Uncertainty Principle of Giesenberg | |
| 473. |
Maximum permissible concentration of copper in drinking water in mg/L is - |
| A. | 0.01 |
| B. | 0.05 |
| C. | 1.0 |
| D. | 2.0 |
| Answer» D. 2.0 | |
| 474. |
Which one of the following elements is an example of noble gas? |
| A. | Nitrogen |
| B. | Hydrogen |
| C. | Chlorine |
| D. | Helium |
| Answer» E. | |
| 475. |
Nitrogen is an essential constituent of all: |
| A. | Fats |
| B. | Proteins |
| C. | Vitamins |
| D. | Carbohydrates |
| Answer» C. Vitamins | |
| 476. |
Which of the following chemicals is used in photography? |
| A. | Aluminium hydroxide |
| B. | Silver bromide |
| C. | Potassium nitrate |
| D. | Sodium chloride |
| Answer» C. Potassium nitrate | |
| 477. |
In addition to hydrogen, the other abundant element present on Sun s surface is - |
| A. | Helium |
| B. | Neon |
| C. | Argon |
| D. | Oxygen |
| Answer» B. Neon | |
| 478. |
Atomic number is equal to - |
| A. | Number of electrons |
| B. | Number of neutron |
| C. | Number of protons |
| D. | Total number of protons and neutrons |
| Answer» D. Total number of protons and neutrons | |
| 479. |
Which of the following is a noble gas - |
| A. | Argon |
| B. | Hydrogen |
| C. | Oxygen |
| D. | Nitrogen |
| Answer» B. Hydrogen | |
| 480. |
Maximum permissible concentration of copper in drinking water in mg/L, is |
| A. | 0.01 |
| B. | 0.05 |
| C. | 1.0 |
| D. | 2.0 |
| Answer» D. 2.0 | |
| 481. |
The chemical that is used to ripen mangoes is - |
| A. | Calcium sulphide |
| B. | Calcium carbide |
| C. | Calcium carbonate |
| D. | Calcium chloride |
| Answer» C. Calcium carbonate | |
| 482. |
The luster of a metal is due to - |
| A. | high polishing |
| B. | high density |
| C. | chemical inertness |
| D. | presence of free electrons |
| Answer» E. | |
| 483. |
Modern periodic law had been given by |
| A. | Moseley |
| B. | Mendeleev |
| C. | Lother-Mayer |
| D. | Lavoisier |
| Answer» B. Mendeleev | |
| 484. |
is the number of shells for elements of the 3rd period. |
| A. | "2" |
| B. | "1" |
| C. | "0" |
| D. | "3" |
| Answer» D. "3" | |
| 485. |
Hardness of the water is commonly measured in terms of - |
| A. | Calcium carbonate equivalents |
| B. | Calcium sulphate equivalents |
| C. | Magnesium carbonate equivalents |
| D. | Magnesium sulphate equivalents |
| Answer» B. Calcium sulphate equivalents | |
| 486. |
Chemical that is used in photography - |
| A. | Copper sulphate |
| B. | Silver bromide |
| C. | Magnesium sulphate |
| D. | None |
| Answer» C. Magnesium sulphate | |
| 487. |
In silvery paints, the main constituent present is - |
| A. | Aluminium powder |
| B. | Silver powder |
| C. | Lead powder |
| D. | White lead |
| Answer» B. Silver powder | |
| 488. |
Which chemical is used to ripen mangoes artificially? |
| A. | Sulphur Dioxide |
| B. | Nitrous Oxide |
| C. | Calcium Carbide |
| D. | Phosphorous |
| Answer» D. Phosphorous | |
| 489. |
The element present in the largest amount in rocks and minerals is - |
| A. | carbon |
| B. | silicon |
| C. | hydrogen |
| D. | aluminium |
| Answer» C. hydrogen | |
| 490. |
An element with an atomic number of 17 is - |
| A. | an alkali metal |
| B. | a rare gas |
| C. | a halogen gas |
| D. | a transition metal |
| Answer» D. a transition metal | |
| 491. |
What is the formula of potassium ion in the noble gas state? |
| A. | K |
| B. | K |
| C. | K |
| D. | K |
| Answer» B. K | |
| 492. |
Potassium Permanganate is used for purifying drinking water, because . |
| A. | It is a reducing agent |
| B. | It is an oxidising agent |
| C. | It is a sterilising agent |
| D. | It dissolves the impurities of water |
| Answer» C. It is a sterilising agent | |
| 493. |
Chemical name of bleaching powder is |
| A. | Calcium chlorate |
| B. | Calcium hypochlorite |
| C. | Calcium chloro hypochlorite |
| D. | Calcium bi chloride |
| Answer» C. Calcium chloro hypochlorite | |
| 494. |
Bleaching powder is prepared by passing |
| A. | Chlorine over slaked lime |
| B. | Oxygen over slaked lime |
| C. | Carbon dioxide over slaked lime |
| D. | Chlorine over quick lirne |
| Answer» B. Oxygen over slaked lime | |
| 495. |
The chemical used in enabalining biological materials is |
| A. | formaldehyde in water |
| B. | formaldehyde in methanol |
| C. | ethylene glycol |
| D. | gaseous formaldehyde |
| Answer» B. formaldehyde in methanol | |
| 496. |
The metal extracted from Bauxite is |
| A. | Silver |
| B. | Copper |
| C. | Manganese |
| D. | Aluminum |
| Answer» E. | |
| 497. |
The gas used for artificial ripening of green fruit is - |
| A. | Acetylene |
| B. | Ethylene |
| C. | Ethane |
| D. | Carbon dioxide |
| Answer» C. Ethane | |
| 498. |
Iron filings can be separated from a heterogenous mixture using the technique of |
| A. | Sublimation |
| B. | Magnetization |
| C. | Sedimentation |
| D. | Evaporation |
| Answer» C. Sedimentation | |
| 499. |
Chlorine atom and chloride ions - |
| A. | Have an equal number of protons |
| B. | Have an equal number of electrons |
| C. | Unequal number neutrons |
| D. | reacts spontaneously with water |
| Answer» B. Have an equal number of electrons | |
| 500. |
The soft silvery metalic element which ionizes easily when heated or exposed to light and is present in atomic clocks is |
| A. | Cerium |
| B. | Cesium |
| C. | Calcium |
| D. | Californium |
| Answer» C. Calcium | |