McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: General Knowledge (GK) .
| 401. |
Tar roads get damaged if there is – |
| A. | stagnation of water on road |
| B. | heavy traffic |
| C. | no maintenance |
| D. | no sloping |
| Answer» A. stagnation of water on road | |
|
Explanation: 0 |
|
| 402. |
The drug 'Marijuana' is a – |
| A. | sedative |
| B. | mental stimulant |
| C. | hallucinating substance |
| D. | tranquillizer |
| Answer» A. sedative | |
|
Explanation: Cannabis, also known as marijuana is a preparation of the Cannabis plant intended for use as a psychoactive drug and as medicine. Cannabis indica is known for sedative effects and preferred night time as medical cannabis. |
|
| 403. |
Chemically 'Quick Silver’ is known as |
| A. | Mercury |
| B. | Silver |
| C. | Gold |
| D. | Copper |
| Answer» A. Mercury | |
|
Explanation: Quicksilver is an alternative name for the element mercury. A heavy, silvery d- block element, mercury is the only metal that is liquid at standard conditions for temperature and pressure; the only other element that is liquid under these conditions is bromine, though metals such as caesium, gallium, and rubidium melt just above room temperature. |
|
| 404. |
Extensively used nitrogenous fertilizer is – |
| A. | Ammonium nitrate |
| B. | Urea |
| C. | Ammonium sulphate |
| D. | Nitro-lime |
| Answer» B. Urea | |
|
Explanation: More than 90% of world production of urea is destined for use as a nitrogen-release fertilizer. Urea has the highest nitrogen content of all solid nitrogenous fertilizers in common use. Therefore, it has the lowest transportation costs per unit of nitrogen nutrient. |
|
| 405. |
The metal used in storage batteries- |
| A. | Iron |
| B. | Copper |
| C. | Lead |
| D. | Zinc |
| Answer» C. Lead | |
|
Explanation: Commercially available batteries use a variety of metals and electrolytes. Anodes can be made of zinc, aluminum, lithium, cadmium, iron, metallic lead, lanthanide, or graphite |
|
| 406. |
Type metal used in printing press is an alloy of - |
| A. | lead and copper |
| B. | lead and antimony |
| C. | lead and bismuth |
| D. | lead and zinc |
| Answer» B. lead and antimony | |
|
Explanation: Lead and antimony are used to make type metals alloy. These type metals are used to make the character produced durable and tough. |
|
| 407. |
The acid which is secreted by the glands in the stomach wall is – |
| A. | sulphuric acid |
| B. | hydrochloric acid |
| C. | nitric acid |
| D. | phosphoric acid |
| Answer» B. hydrochloric acid | |
|
Explanation: Gastric acid is a digestive fluid, formed in the stomach. It has a pH of 1.5 to 3.5 and is composed of hydrochloric acid (HCl) (around 0.5%, or 5000 parts per million), and large quantities of potassium chloride (KCl) and sodium chloride (NaCl). The acid plays a key role in digestion of proteins, by activating digestive enzymes, and making ingested proteins unravel so that digestive enzymes can break down the long chains of amino acids. |
|
| 408. |
Dry ice is – |
| A. | solid ammonia |
| B. | solid sulphur dioxide |
| C. | dry carbon dioxide gas |
| D. | solid carbon dioxide |
| Answer» D. solid carbon dioxide | |
|
Explanation: Dry ice is the solid form of carbon dioxide. It is used primarily as a cooling agent. Its advantages include lower temperature than that of water ice and not leaving any residue. It is useful for preserving frozen foods, ice cream, etc., where mechanical cooling is unavailable. |
|
| 409. |
Cement containing excess amount of lime – |
| A. | cracks during setting |
| B. | becomes more strong |
| C. | is slow setting |
| D. | is quick setting |
| Answer» A. cracks during setting | |
|
Explanation: In cement almost entire amount of lime is present in combined state as calcium silicates and calcium aluminates. Cement containing excess amount of lime cracks during setting while cement containing less amount of lime is weak in strength. Setting of cement is an exothermic process. |
|
| 410. |
Which one of the following is a micro- element? |
| A. | Chlorine |
| B. | Hydrogen |
| C. | Nitrogen |
| D. | Oxygen |
| Answer» A. Chlorine | |
|
Explanation: In analytical chemistry, a trace element or micro-element is an element in a sample that has an average concentration of less than 100 parts per million measured in atomic count or less than 100 micrograms per gram. These are those elements essential for plant growth which are needed in only very small (micro). They are: boron (B), copper (Cu), iron (Fe), chloride (C1), manganese (Mn), molybdenum (Mo) and zinc (Zn). |
|
| 411. |
In vulcanization, natural rubber is heated with- |
| A. | Carbon |
| B. | Sulphur |
| C. | Silicon |
| D. | Phosphorus |
| Answer» B. Sulphur | |
|
Explanation: Vulcanization of rubber is a process of improvement of the rubber elasticity and strength by heating it in the presence of sulfur, which results in three-dimensional cross- linking of the chain rubber molecules(polyisoprene) bonded to each other by sulfur atoms. |
|
| 412. |
An example of major air pollutant is – |
| A. | Oxygen |
| B. | Carbon monoxide |
| C. | Helium |
| D. | Carbon dioxide |
| Answer» B. Carbon monoxide | |
|
Explanation: Carbon monoxide (CO) is a colourless, odorless, non-irritating but very poisonous gas which is a product by incomplete combustion of fuel such as natural gas, coal or wood. Vehicular exhaust is a major source of carbon monoxide. |
|
| 413. |
The metal, used to galvanise iron to protect it from rusting is - |
| A. | Zine |
| B. | Chromium |
| C. | Lead |
| D. | Antimony |
| Answer» A. Zine | |
|
Explanation: Galvanization is the process of applying a protective zinc coating to steel or iron, in order to prevent rusting. Although galvanization can be done with electrochemical and electro-deposition processes, the most common method in current use is hot-dip galvanization, in which steel parts are submerged in a bath of molten zinc. |
|
| 414. |
Which of the following gases is mixed with oxygen for breathing by divers in aqualungs? |
| A. | Methane |
| B. | Nitrogen |
| C. | Helium |
| D. | Hydrogen |
| Answer» B. Nitrogen | |
|
Explanation: For some diving, has mixtures other than normal atmospheric air (21 % oxygen, 78% nitrogen, 1% trace gases) can be used, so long as the diver is properly trained in their use. The most commonly used mixture is Nitrox, also referred to as Enriched Air Nitrox (EAN), whichis air with extra oxygen, often with 32% or 36% oxygen, and thus less nitrogen, reducing the likelihood of decompression sickness or allowing longer exposure to the same pressure for equal risk. |
|
| 415. |
The material known in commerce as Terylene is a – |
| A. | Synthetic fibre |
| B. | Natural fibre |
| C. | Modified natural fibre |
| D. | Blend of cotton and silk |
| Answer» A. Synthetic fibre | |
|
Explanation: Terylene is the name for a synthetic polyester fibre. It is a synthetic polyester fibre or fabric based on terephthalic acid, characterized by lightness and crease resistance and used for clothing, sheets, ropes, sails, etc. |
|
| 416. |
Among the fuels given below, the one with highest calorific value is – |
| A. | Coke |
| B. | Coal |
| C. | Wood |
| D. | Natural gas |
| Answer» D. Natural gas | |
|
Explanation: The calorific values of different fuels (in Kcal/kg) in dry state are: Wood: 3500; Coal: 4000-7000; Coke: 6500; and Natural Gas: 8600 Kcal/kg. |
|
| 417. |
Electric bulbs are filled with – |
| A. | Nitrogen |
| B. | Carbon dioxide |
| C. | Argon |
| D. | Oxygen |
| Answer» C. Argon | |
|
Explanation: Argon is produced industrially by the fractional distillation of liquid air. Argon is mostly used as an inert shielding has in welding and other high-temperature industrial processes where ordinarily non-reactive substances become reactive; for example, an argon atmosphere is used in graphite electric furnaces to prevent the graphite from burning. Argon basalso has uses in incandescent and fluorescent lighting, and other types of gas discharge tubes. Argon makes a distinctive blue-green gas laser. |
|
| 418. |
The purest form of Iron is : |
| A. | Cast iron |
| B. | Steel |
| C. | Pig iron |
| D. | Wrought iron |
| Answer» D. Wrought iron | |
|
Explanation: Wrought iron is an iron alloy with a very low carbon content in Contrast to steel, and has fibrous inclusions, known as slag. This is what gives it a "grain" resembling wood, which is visible when it is etched or bent to the point of failure. Wrought iron is tough, malleable, ductile and easily welded. Historically, it was known as "commercially pure iron"; however, it no longer qualifies because current standards for commercially pure iron require a carbon content of less than 0.008 wt%. |
|
| 419. |
Which of the following metals are present in hemoglobin and chlorophyll, respectively? |
| A. | Fe and Mg |
| B. | Fe and Zn |
| C. | Mg and Zn |
| D. | Zn and Mg |
| Answer» A. Fe and Mg | |
|
Explanation: Fe and Mg metals are present in hemoglobin and Chlorophyll respectively. |
|
| 420. |
Atomic mass of Nitrogen is 14 and that of Hydrogen is 1. What will be the molecular mass of Ammonia? |
| A. | 18 |
| B. | 17 |
| C. | 16 |
| D. | 15 |
| Answer» B. 17 | |
|
Explanation: Ammonia (NH3) is composed of one atom of Nitrogen and three Hydrogen atoms. This means that its molar mass of ammonia will be the sum of the molar mass of one nitrogen atom and three times the molar mass of a hydrogen atom. |
|
| 421. |
Silver halides are used in photographic plates because they are - |
| A. | oxidised in air |
| B. | soluble in hyposolution |
| C. | reduced by light |
| D. | totally colourless |
| Answer» C. reduced by light | |
|
Explanation: The light-sensitive chemicals used in photographic film and paper are silver halides. Silver halides are used in photographic film and photographic paper, including graphic art film and paper, where silver halide crystals in gelatin are coated on to a film base, glass or paper substrate. When a silver halide crystal is exposed to light, a sensitivity speck on the surface of the crystal is turned into a small speck of metallic silver (these comprise the invisible or latent image). If the speck of silver contains approximately four or more atoms, it is rendered developable - meaning that it can undergo development which turns the entire crystal into metallic silver. |
|
| 422. |
Tetra ethyle lead (TEL) is - |
| A. | a catalyst in burning fossil fuel |
| B. | an antioxidant |
| C. | areductant |
| D. | an antiknock compound |
| Answer» D. an antiknock compound | |
|
Explanation: Tetraethyl lead was extensively used as an additive to gasoline, wherein it served as an effective antiknock agent and prevented exhaust valve and seat wear. The use of TEL in gasoline started in the US, while in Europe, alcohol was initially used. The advantages of leaded gasoline — its higher enemy content and storage quality —eventually led to a universal switch to leaded fuel. One of the greatest advantages of TEL over other antiknock agents or the use of high-octane blend stocks is the very |
|
| 423. |
Which metal is heaviest - |
| A. | osmium |
| B. | mercury |
| C. | iron |
| D. | nickel |
| Answer» A. osmium | |
|
Explanation: I assume by "heaviest," you mean "densest;" in that case, the densest chemical element is osmium (which is a metal). Osmium has a density of around 22 grams per cubic centimeter. |
|
| 424. |
The term PVC used in the plastic industry stands for - |
| A. | polyvinyl chloride |
| B. | polyvinyl carbonate |
| C. | phosphor vanadium chloride |
| D. | phosphavinyl chloride |
| Answer» A. polyvinyl chloride | |
|
Explanation: Polyvinyl chloride is the world's third-most widely produced synthetic plastic polymer, after polyethylene and polypropylene. About 40 million tones are produced per year. |
|
| 425. |
Rusting of iron takes place due to – |
| A. | oxidation |
| B. | carbonation |
| C. | exfoliation |
| D. | corrosion |
| Answer» A. oxidation | |
|
Explanation: The rusting of iron is an electrochemical process that begins with the transfer of electrons from iron to oxygen. The rate of corrosion is affected by water and accelerated by electrolytes, as illustrated by the effects of road salt on the corrosion of automobiles. When impure (cast) iron is in contact with water, oxygen, or other strong oxidants, or acids, it rusts. |
|
| 426. |
German silver used for making utensils is an alloy of – |
| A. | Copper, silver, nickel |
| B. | Copper, zinc, nickel |
| C. | copper, zinc, aluminium |
| D. | copper, nickel, aluminium |
| Answer» B. Copper, zinc, nickel | |
|
Explanation: Nickel silver, also known as German silver, Argentan, new silver, nickel brass, albata, alpacca, or electrum, is a copper alloy with nickel and often zinc. The usual formulation is 60% copper, 20% nickel and 20% zinc. Nickel silver is named for its silvery appearance, but it contains no elemental silver unless plated. The name "German silver" refers to its development by 19th-century German metalworkers in imitation of the Chinese alloy known as paktong. |
|
| 427. |
Sour milk contains – |
| A. | acetic acid |
| B. | tartaric acid |
| C. | citric acid |
| D. | lactic acid |
| Answer» D. lactic acid | |
|
Explanation: Lactic acid, also known as milk acid, is a chemical compound that plays a role in various biochemical processes and was first isolated in 1780 by the Swedish chemist Carl Wilhelm Scheele. Lactic acid is a carboxylic acid with the chemical formula C3H6O3. Lactic acid is found primarily in sour milk products, such as koumiss, laban, yogurt, kefir, and some cottage cheeses. The casein in fermented milk is coagulated (curdled) by lactic acid. |
|
| 428. |
The acid used in lead storage cells is – |
| A. | phosphoric acid |
| B. | hydrochloric acid |
| C. | nitric acid |
| D. | sulphuric acid |
| Answer» D. sulphuric acid | |
|
Explanation: Lead-acid batteries, invented in 1859 by French physicist Gaston Plante, are the oldest type of rechargeable battery. Despite having a very low energy-to-weight ratio and a low energy-to-volume ratio, their ability to supply high surge currents means that the cells maintain a relatively large powerto-weight ratio.These features, along with their low cost, make them attractive for use in motor vehicles to provide the high current required by automobile starter motors. |
|
| 429. |
Milk is an example of - |
| A. | suspension |
| B. | true solution |
| C. | emulsion |
| D. | gel |
| Answer» C. emulsion | |
|
Explanation: Milk is an example of the oil-in- water type of emulsion. In milk liquid fat globules are dispersed in water. Other examples are, vanishing cream etc. |
|
| 430. |
Wood Spirit is which of the following? |
| A. | Ethyl Alcohol |
| B. | Propanol |
| C. | Methyl Alcohol |
| D. | Butanol |
| Answer» C. Methyl Alcohol | |
|
Explanation: Wood spirit (countable and uncountable, plural wood spirits) (countable) A dryad or other spiritual being associated with forests, woods, or trees. (Uncountable, often the wood spirit) Methyl Alcohol, a type of alcohol. |
|
| 431. |
Alum stops bleeding in minor cuts because of – |
| A. | solvation |
| B. | emulsion |
| C. | dialysis |
| D. | coagulation |
| Answer» D. coagulation | |
|
Explanation: Coagulation is the process by which blood forms clots. It is an important part of homeostasis, the cessation of blood loss from a damaged vessel, wherein a damaged blood vessel wall is covered by a platelet and fibrin- containing clot to stop bleeding and begin repair of the damaged vessel. Disorders of coagulation can lead to an increased risk of bleeding (hemorrhage) or obstructive clotting (thrombosis). |
|
| 432. |
'Plaster of Paris' is made by partial dehydration of – |
| A. | epsom salt |
| B. | gypsum salt |
| C. | blue vitriol |
| D. | green vitriol |
| Answer» B. gypsum salt | |
|
Explanation: Plaster is a building material used for coating walls and ceilings. Plaster starts as a dry powder similar to mortar or cement and like those materials it is mixed with water to form apaste which liberates heat and then hardens. Unlike mortar and cement, plaster remains quite soft after setting, and can be easily manipulated with metal tools or even sandpaper. These characteristics make plaster suitable for a finishing, rather than a load-bearing material. |
|
| 433. |
The purity of gold is expressed in carats. The purest form of gold is– |
| A. | 24 carats |
| B. | 99.6 carats |
| C. | 91.6 carats |
| D. | 22 carats |
| Answer» A. 24 carats | |
|
Explanation: Gold is a dense, soft, shiny, malleable and ductile metal. Gold has a bright yellow colour and luster traditionally considered attractive, which it maintains without oxidizing in air or water. The metal therefore occurs often in free elemental (native) form, as nuggets or grains in rocks, in veins and in alluvial deposits. Less commonly, it occurs in minerals as gold compounds, usually with tellurium. Pure gold is too soft for day-to-day monetary use and is typically hardened by alloying with copper, silver or other base metals. The gold content of alloys is measured in carats (k). Pure gold is designated as 24k. |
|
| 434. |
Petroleum consists of a mixture of – |
| A. | Carbohydrates |
| B. | Carbonates |
| C. | Hydrocarbons |
| D. | Carbides |
| Answer» C. Hydrocarbons | |
|
Explanation: Petroleum (petroleum, from Latin: 'petra' (rock) + Latin: oleum (oil) or crude oil is a naturally occurring flammable liquid consisting of a complex mixture of hydrocarbons of various molecular weights and other liquid organic compoun.ds, that are found in geologic formations beneath the Earth's surface. Petroleum is recovered mostly through oil drilling. It is refined and separated, most easily by boiling point, into a large number of consumer products, from petrol (or gasoline) and kerosene to asphalt and chemical reagents used to make plastics and pharmaceuticals. Petroleumis used in manufacturing a wide variety of materials, and it is estimated that the world consumes about 88 million barrels each day. |
|
| 435. |
What is a mixture of potassium nitrate powdered charcoal and sulfur called? |
| A. | paint |
| B. | aluminum |
| C. | brass |
| D. | gun powder |
| Answer» D. gun powder | |
|
Explanation: Gun powder is the mixture of potassium nitrate powdered charcoal and sulfur. |
|
| 436. |
What among following is used to produce artificial rain? |
| A. | Copper oxide |
| B. | carbon monoxide |
| C. | silver iodide |
| D. | silver nitrate |
| Answer» C. silver iodide | |
|
Explanation: Artificial process of making rain is done by precipitation, a process of condensation of water vapors in the air. This is done by using cloud seeding chemicals like potassium iodide, silver iodide, liquid propane or solid carbon dioxide (dry ice). |
|
| 437. |
The isotope used for the production of atomic energy is - |
| A. | U-235 |
| B. | U-238 |
| C. | U-234 |
| D. | U-236 |
| Answer» A. U-235 | |
|
Explanation: U235 is an isotope of uranium making up about 0.72% of natural uranium. Unlike the predominant isotope U238 it is fissile, i.e., it can sustain fission chain reaction. It is the only fissile isotope that is a primordial nuclide or found in significant quantity in nature. If at least one neutron from U235 fission strikes another nucleus and causes it to fission, then the chain reaction will continue. If the reaction will sustpa itself, it is said to be critical, and the massof U required to produce the critical condition is said to be a critical mass. |
|
| 438. |
Which of the following is not a nucleon? |
| A. | Proton |
| B. | Neutron |
| C. | Electron |
| D. | Positron |
| Answer» D. Positron | |
|
Explanation: Nucleon is one of the particles that makes up the atomic nucleus. Each atomic nucleus consists of one or more nucleons, and each atom in turn consists of a cluster of nucleons surrounded by one or more electrons. There are two kinds of nucleon: the neutron and the proton. The mass number of a given atomic isotope is identical to its number of nucleons. Thus the term nucleon number may be used in place of the more common terms mass number or atomic mass number. |
|
| 439. |
Which of the metallic ions is essential for blood clotting? |
| A. | Na+ |
| B. | Ca++ |
| C. | K+ |
| D. | Fe++ |
| Answer» B. Ca++ | |
|
Explanation: Clotting also requires: calcium ions (Ca2+)(which is why blood banks use a chelating agent to bind the calcium in donated blood so the blood will not clot in the bag). about a dozen other protein clotting factors. |
|
| 440. |
CuO + H2 = Cu + H2O. This equation is an example of - |
| A. | Oxidation |
| B. | Decomposition |
| C. | Reduction |
| D. | Redox |
| Answer» D. Redox | |
|
Explanation: 0 |
|
| 441. |
The gas that is used in the manufacture of vanaspati ghee is - |
| A. | Oxygen |
| B. | Carbon dioxide |
| C. | Hydrogen |
| D. | Nitrogen |
| Answer» C. Hydrogen | |
|
Explanation: Hydrogenation - to treat with hydrogen - is a chemical reaction between molecular hydrogen (H2) and another compound or element, usually in the presence of a catalyst. The process is commonly employed to reduce or saturate organic compounds. The largest scale application of hydrogenation is for the processing of vegetableoils (fats to give margarine and related spreads and shortenings). |
|
| 442. |
The anode of a dry cell is made up of - |
| A. | Iron |
| B. | Cadmium |
| C. | Zine |
| D. | Lead |
| Answer» C. Zine | |
|
Explanation: A standard dry cell comprises a zinc anode (negative pole), usually in the form of a cylindrical pot, with a carbon cathode (positive Pole) in the form of a central rod. The electrolyte is ammonium chloride in the form of a paste next to file zinc anode. The remaining space between the electrolyte and carbon etthode is taken up bye. second paste consisting of amoniumm chloride and manganese dioxide, the latter acting as a depolariser. |
|
| 443. |
The chemical used in enabalining biological materials is – |
| A. | formaldehyde in water |
| B. | formaldehyde in methanol |
| C. | ethylene glycol |
| D. | gaseous formaldehyde |
| Answer» A. formaldehyde in water | |
|
Explanation: Embalming fluids use formaldehyde as a preservative. Formaldehyde is the simplest aldehyde with the chemical formula HCHO. Formalin is a solution offormaldehyde in water, usually with a small amount of methanol added. Modern formaldehyde based embalming fluids are much kinder to the environment than those used in previous years. |
|
| 444. |
Which of the following is a mono- atomic gas? |
| A. | Oxygen |
| B. | Neon |
| C. | Nitrogen |
| D. | Fluorine |
| Answer» B. Neon | |
|
Explanation: All elements will be monatomic in the gas phase at sufficiently high temperatures. At standard temperature and pressure (STP), all of the noble gases are monatomic. These are helium, neon, argon, krypton, xenon and radon. Monatomic hydrogen comprises about 75% of the elemental mass of the universe. |
|
| 445. |
Among the following, which is always found in free-state in nature? |
| A. | Gold |
| B. | Silver |
| C. | Sodium |
| D. | Copper |
| Answer» A. Gold | |
|
Explanation: 0 |
|
| 446. |
In a nuclear reactor the material use for absorbing neutrons is – |
| A. | zinc |
| B. | radium |
| C. | lead |
| D. | cadmium |
| Answer» D. cadmium | |
|
Explanation: One isotope of cadmium, 113Cd, absorbs neutrons with very high probability if they have an energy below the cadmium cut-off and transmits them otherwise. The cadmium cut- off is about 0.5 eV. Neutrons with energy below the cut-off are deemed slow neutrons, distinguishing them from intermediate and fast neutrons. |
|
| 447. |
Solder metal is an alloy of – |
| A. | lead and tin |
| B. | lead and antimony |
| C. | copper and zinc |
| D. | copper and tin |
| Answer» A. lead and tin | |
|
Explanation: A solder is a fusible metal alloy of tin and lead with a melting point or melting range of 90 to 450°C, used in a process called soldering where it is melted to jain metallic surfaces. It is especially useful in electronics and plumbing. |
|
| 448. |
Ozone depletion in the atmosphere is mainly caused by - |
| A. | sulphur dioxide |
| B. | nitrogen dioxide |
| C. | hydrogen sulphide |
| D. | chlorofluorocarbon |
| Answer» D. chlorofluorocarbon | |
|
Explanation: A chlorofluorocarbon (CFC) is an organic compound that contains only carbon, chlorine, hydrogen and fluorine, produced as a volatile derivative of methane and ethane. They contribute to ozone depletion in the upper atmosphere. |
|
| 449. |
All noble gases are - |
| A. | Colourless |
| B. | Odourless |
| C. | Colourless and Odourless |
| D. | Light blue |
| Answer» C. Colourless and Odourless | |
|
Explanation: Other characteristics of the noble gases are that they all conduct electricity, fluoresce, are odorless and colorless, and are used in many conditions when a stable element is needed to maintain a safe and constant environment. |
|
| 450. |
Which halide is used in making sensitive emulsion on photographic film? |
| A. | Sodium chloride |
| B. | Silver bromide |
| C. | Silver iodide |
| D. | Silver chloride |
| Answer» B. Silver bromide | |
|
Explanation: Silver bromide, a soft, pale- yellow, water insoluble salt well known for its unusual sensitivity to light. This property has allowed silver halides to become the basis of modern photographic materials. |
|
Done Studing? Take A Test.
Great job completing your study session! Now it's time to put your knowledge to the test. Challenge yourself, see how much you've learned, and identify areas for improvement. Don’t worry, this is all part of the journey to mastery. Ready for the next step? Take a quiz to solidify what you've just studied.