RL MISELENEOUS SCI 2 Flashcards
●Acceleration due to gravity is a vector quantity and isalways directed towards the ____ of the Earth orany heavenly body; it does not depend on the massm of the object.
centre
●When substances react, they do so by followingcertain laws; these laws are called the laws ofchemical combination and formed the basis of____ atomic theory of matter.
Dalton’s
●In 1916, the American chemist ____ proposed thatchemical bonds are formed between atomsbecause electrons from the atoms interact witheach other.
Gilbert Newton Lewis
●Chronic ____, a type of chronic obstructivepulmonary disease, is characterized by thepresence of a productive cough that lasts for threemonths or more per year for at least two years.
bronchitis
●____ is the formation of excess fibrous connectivetissue in an organ or tissue in a reparative orreactive process; this is as opposed to formation offibrous tissue as a normal constituent of an organor tissue.
Fibrosis
●Pulmonary ____ is fluid accumulation in the lungswhich is due to either failure of the heart toremove fluid from the lung circulation or a directinjury to the lung parenchyma.
edema
●The electron is a subatomic particle carrying anegative electric charge, it has no knowncomponents or substructure, therefore, theelectron is generally thought to be an ____particle.
elementary
●By 1914, experiments by physicists ErnestRutherford, Henry Moseley, James Franck andGustav Hertz had largely established the structureof an atom as a dense nucleus of positive chargesurrounded by ____ electrons.
lower-mass
●In physics and thermodynamics, heat is energytransferred from one place in a body or thermodynamic system to another place, orbeyond the boundary of one system to another onedue to thermal contact even when the systems areat different ____.
temperatures
●____ are water-soluble vacuolar pigments that mayappear red, purple, or blue according to pH.
Anthocyanins
●In common usage, an antibiotic is a substance orcompound that kills, or inhibits the growth of____.
bacteria
●____, black quarter, quarter evil, quarter ill is aninfectious bacterial disease of sheep and cattle,caused by Clostridium chauvoei bacteria.
Blackleg
●A ____ is a secreted or excreted chemical factor thattriggers a social response in members of the samespecies.
pheromone
●The Gattermann reaction, named for the Germanchemist Ludwig Gattermann, in organicchemistry refers to a reaction of hydrocyanic acidwith an ____ compound.
aromatic
●Flint glass is optical glass that has relatively highrefractive index and low ___.
Abbe number
●Cell wall is found in plants, bacteria, fungi, algae, andsome archaea. Animals and ____ do not have cellwalls.
protozoa
●The cells develop in the bone marrow and circulatefor about 100-120 days in the body before theircomponents are recycled by ____.
macrophages
●The reactivity series is sometimes quoted in the strictreverse order of standard electrode potentials,when it is also known as the ____.
electrochemical series
●Rocks brought back from the moon during the Apollo17 mission are composed of 12.1% ____.
TiO2
●Wrought iron is an iron alloy with a very low carboncontent, in comparison to steel, and has fibrousinclusions, known as ____.
slag
●Sodium carbonate (also known as washing soda, sodacrystals or soda ash) is a sodium salt of carbonicacid. It is domestically well known for its everydayuse as a ____.
water softener
●A halogen element is a reddish-brown volatile liquidat standard room temperature that is intermediatein reactivity between chlorine and iodine. What isit?
bromine
“●What is known as ““red brass”” in USA?”
Gun metal
●Ultraviolet (UV) light is electromagnetic radiationwith a wavelength shorter than that of visiblelight, but longer than x-rays, in the range ____.
10 nm to 400 nm
●The visible violet light has a wavelength of about 400nm. The visible indigo light has a wavelength ofabout ____.
445 nm
●Alpha decay reduces the atomic weight, or massnumber, of a nucleus, while beta and ____ decayleave the mass number unchanged. Thus, the neteffect of alpha radioactivity is to produce nucleilighter than those of the original radioactivesubstance.
gamma
●In infrared photography, the film or image sensorused is sensitive to infrared light. The part of thespectrum used is referred to as near-infrared todistinguish it from far-infrared, which is thedomain of ____.
thermal imaging
●The blue color of the sky is due to which physicalphenomenon?
Rayleigh scattering
●If a lorry is travelling round a circular bend withuniform speed on a horizontal road, the resultantforce acting on it must be directed to the centre.i.e. it must be the ____.
centripetal force
●Blood anti-coagulation is achieved mostly by heparinsulfate proteoglycans derived from ___ cells.
endothelial
“●Phycocyanin is from the Greek phyco meaning”“algae”” and cyanin is from the English word”“cyan””, which is derived from the Greek ““kyanos”“and means.”
blue-green
●The fats are hydrolyzed by the base, yielding alkalisalts of fatty acids (crude soap) and ____.
glycerol
●For an aqueous solution to have a higher pH, a basemust be dissolved in it, which binds away many ofthese rare ____.
hydrogen ions
●As an ____, potassium permanganate can act as adisinfectant.
oxidant
●____ is the most cost-effective alloying material foriron, but various other alloying elements are usedsuch as manganese, chromium, vanadium, andtungsten.
Carbon
●The ____ is commonly used in acoustics to quantifysound levels relative to some 0 dB reference.
decibel
●A reaction is feasible only if the total change in the___ free energy is negative, if it is equal to zero thechemical reaction is said to be at equilibrium.
Gibbs
“●Classical mechanics is a model of the physics of forcesacting upon bodies. It is often referred to as”“_____ mechanics””.”
Newtonian
●The periodic table of the chemical elements is atabular method of displaying the chemicalelements. Although precursors to this table exist,its invention is generally credited to whichRussian chemist in 1869?
Dmitri Mendeleev
●What is a vertical column in the periodic table of theelements which is considered the most importantmethod of classifying the elements?
Group
●The evolutionary history of the species whichdescribes the characteristics of the various speciesfrom which it descended together with itsgenealogical relationship to every other species iscalled its ______.
phylogeny
●What studies the effects of changes in temperature,pressure, and volume on physical systems at themacroscopic scale, and the transfer of energy asheat?
Thermodynamics
●A hormone is a chemical messenger that carries asignal from one cell (or group of cells) to anothervia the blood. It is derived from a Greek word’opur’ which means ______.
Impetus
●An infectious disease is a disease resulting from thepresence of pathogenic microbial agents, includingpathogenic viruses, bacteria, fungi, protozoa,multi-cellular parasites, and aberrant proteinsknown as ___.
Prions
●Anton van Leeuwenhoek advanced the science ofmicroscopy by being the first to observemicroorganisms, allowing for easy visualization of___.
bacteria
●Protists are mostly single-celled organisms that havea nucleus. They usually live in water. Examples ofprotists include some algae, paramecium, and ___.
amoeba
●The gravitational constant is an empirical physicalconstant involved in the calculation of thegravitational attraction between ___. It appearsEinstein’s theory of general relativity.
objectswith mass
●The most abundant cells in blood are red blood cellswhich contain hemoglobin, an iron-containing_____, which facilitates transportation of oxygenby reversibly binding to this respiratory gas andgreatly increasing its solubility in blood.
Protein
●The salivary glands in mammals are exocrine glands,glands with ducts that produce saliva. They alsosecrete ___, an enzyme that breaks down starchinto glucose.
amylase
●Human erythrocytes are produced through a processnamed erythropoiesis, developing from committedstem cells to mature erythrocytes in about ____.
7 days
●Positively charged cations (e.g. sodium cation Na+)and negatively charged anions (e.g. chloride Cl?)can form a crystalline lattice of neutral _____.
Salts
●The cholesterol contained in _____ occasionallyaccrete into lumps in the gallbladder, forminggallstones.
Bile
●The most convenient presentation of the chemicalelements is in the periodic table of the chemicalelements, which groups elements by _____.
Atomic Number
●The only known vertebrates without erythrocytes arethe _____ which live in very oxygen rich coldwater and transport oxygen freely dissolved intheir blood.
Crocodile icefishes
●___ Postulate is a hypothesis, derived from transitionstate theory, concerning the transition state oforganic chemical reactions.
Hammond’s
●___, permittivity of free space or electric constantrelates the units for electric charge to mechanicalquantities such as length and force in theInternational System of Units.
Vacuumpermittivity
●In physics, the space surrounding an electric chargeor in the presence of a time varying magnetic field has a property called anelectric field. The concept of an electric field wasintroduced by ___.
Michael Faraday
●Monera are single-celled organisms that don’t have anucleus. ___ make up the entire kingdom.
Bacteria
●The discovery by ____ in 1931 that radio signals wereemitted by celestial bodies initiated the science ofradio astronomy.
Karl Jansky
●The human musculoskeletal system consists of thehuman skeleton, made by bones attached to otherbones with joints, and skeletal muscle attached tothe skeleton by ___.
tendons
●The most convenient presentation of the chemicalelements is in the periodic table of the chemicalelements, which groups elements by ____.
atomic number
●There are approximately ___ skeletal muscles withinthe typical human, and almost every muscleconstitutes one part of a pair of identical bilateralmuscles.
640
●___ are self-replicating organelles that occur invarious numbers, shapes, and sizes in thecytoplasm of all eukaryotic cells.
Mitochondria
●____ are heterogeneous mixtures in which the particlesize is too small to be seen with the naked eye, butis big enough to scatter light.
Colloids
●_____, a French chemist, was the first to establish anexperimentally useful definition of an element. Hedefined an element as a basic form of matter thatcannot be broken down into simpler substances bychemical reactions.
Antoine Laurent Lavoisier
●A chemical bond is a concept for understanding howatoms stick together in molecules. It may bevisualized as the _____ balance between thepositive charges in the nuclei and the negativecharges oscillating about them.
multipole
●Existence of a chemical element in two or more formsdiffering in physical properties but giving rise toidentical chemical compounds is known as ____.
allotropy
●Mitochondria are known as the powerhouses of thecell. The energy required for various chemicalactivities needed for life is released bymitochondria in the form of ATP (____)molecules.
Adenosine triphopshate
“●The generally accepted definition of health is ““a stateof complete physical, mental, and social well-beingand not merely the absence of disease orinfirmity””, used by the World HealthOrganization (WHO) since ____.”
1948
●The property possessed by certain crystallinesubstances of losing their water of crystallizationwhen exposed to the air and becoming amorphousis called ____.
efflorescence
●The respiratory system consists of the nose, ____,trachea, and lungs. It brings oxygen from the airand excretes carbon dioxide and water back intothe air.
nasopharynx
●The spaces in between the constituent particles and____ of the particles are minimum in the case ofsolids, intermediate in liquids and maximum ingases.
kinetic energy
●The unique device developed by TimiryazevAgricultural Academy in Moscow, which can givereliable forewarning of natural calamities likefloods and droughts, is _____.
Bioceo compass
●A capacitor (originally known as ____) is a passivetwo-terminal electrical component used to storeenergy in an electric field.
Condenser
●____, otherwise known as electrical potentialdifference or electric tension is the electricpotential difference between two points
or thedifference in electric potential energy of a unit testcharge transported between two points. Voltage
●A ____ is an elementary particle, the quantum oflight and all other forms of electromagneticradiation, and the force carrier for theelectromagnetic force.
Photon
●Blood transfusion is the process of receiving bloodproducts into one’s circulation intravenously.They are typically only recommended when aperson’s hemoglobin levels fall below ____.
8g/dL
●Hard water contains calcium and ____ ions thatinterfere with action of soap and contribute to thebuildup of a scale or film of alkaline mineraldeposits in household and industrial equipmentand pipes.
Magnesium
A vaccine typically contains an agent that resembles adisease-causing microorganism, and is often madefrom weakened or killed forms of the microbe, itstoxins or one of its surface ____.
Proteins
●Five different and diverse types of White blood cellsor leukocytes exist, but they are all produced andderived from a multi-potent cell in the bonemarrow known as a hematopoietic ____.
StemCell
●Hydrochloric acid is a clear, colorless solution ofhydrogen chloride (HCl) in water, a highlycorrosive, strong mineral acid with manyindustrial uses, which is found naturally in _____.
Gastric acid
●Via which process is sodium chloride used to producesodium carbonate which is used to produce glass,sodium bicarbonate, and dyes as well as a myriadof other chemicals?
Solvay Process
●The most common function of a ____ is to allow anelectric current to pass in one direction, whileblocking current in the opposite direction (thereverse direction).
Diode
●The refractive index of many materials (such as glass)varies with the wavelength or color of the lightused, a phenomenon known as _____.
Dispersion
●The ____ principle is the quantum mechanicalprinciple that no two identical fermions (particleswith half-integer spin) may occupy the samequantum state simultaneously.
Pauli exclusionprinciple
●In printing, type metal (sometimes called hot metal)refers to the metal alloys used in traditional typefounding and hot metal typesetting. What is themain constituent of these alloys?
Lead
●Table salt is refined salt, which contains about 97 to99 percent sodium chloride. It usually containssubstances that make it free-flowing (anticakingagents) such as sodium alumino-silicate or _____.
Magnesium carbonate
●Vaccines containing antigens are introduced into thebody, stimulating the immune system response byinstructing B cells, with assistance from T cells, toproduce ____.
Antibodies
●As the intestine is a soft tissue structure, it is notusually seen on a plain X-ray. By using ____ tocoat the inner lining of this area the Radiologistcan see the bowel clearly on the X-ray screen, andcan watch the way it functions during this study.
Barium
●What is the term for photoreceptor cells in the retinaof the eye that are responsible for color vision,they function best in relatively bright light, asopposed to rod cells that work better in dimlight?
Cone cells
●For fixed (point-to-point) services, communicationssatellites provide which relay technologycomplementary to that of communication cables?
Microwave radio technology
●What is the term for a type of stellar remnant thatcan result from the gravitational collapse of amassive star during a supernova event?
Neutron Star
●On the surface of the Earth, the escape velocity isabout 11.2 kilometers per second (~6.96 mi/s),which is approximately how many times the speedof sound?
34 times
●At higher pressures and lower ____, deviations fromthe ideal gas behavior became noticeable, and therelationship between pressure and volume canonly be accurately described employing real gastheory.
Temperatures
●Which is that element that increases the absorption ofwater and calcium in the plants and helps in themetabolic activities in plants?
Boron
●The mean normal blood glucose level in humans isabout ____; however, this level fluctuatesthroughout the day.
4 mM
●What is the word for a group of identical cells thatshare a common ancestry, meaning they arederived from the same mother cell?
Clone
●Which is that organic or inorganic material ofnatural or synthetic origin (other than limingmaterials) that is added to a soil to supply one ormore plant nutrients essential to the growth ofplants?
Fertilizer
●Which is an uniquely suitable gas for soft drinksbecause it is inert, non-toxic, and relativelyinexpensive and easy to liquefy?
Carbon dioxide
insect larvae to form cocoons.
Silk
“●Escape velocity is the minimum speed which a spacecraft must have to escape the earth’s”“Gravitational Pull””. It is ___ km/sec. from theearth.”
11.2
●Atoms of the same element with the same atomicnumber but with different atomic mass numberare known as Isotopes of that element. Theycontain different number of ___.
Neutrons
●Which component is used to produce Nitrolim, awidely used fertilizer in past?
Calcium Carbideand Nitrogen
●Which gas is produced whenever an alkali metal suchas Lithium or Sodium reacts with water?
Calcium Carbide and Nitrogen Hydrogen
●Which cell organelle is essential for Cellularrespiration, so vital to the existence of livingbeings?
Calcium Carbide and NitrogenMitochondrion
●Which daily appliance strictly works on the principleof dipole movement of the water molecules?
Microwave Oven
●Which waves are used in the gemstone industry tochange white topaz into blue topaz?
GammaRays
“●What is the term for that part of the ““DTH Satellitedish”” that converts the signals fromelectromagnetic or radio waves to electricalsignals?”
Low Noise Block Converter
●Which Vitamin is added to the milk in some countriesas it is lost during the process of Fat Removal(Skimming)?
Vitamin A
●A tourist, who plans to visit a hill station located atvery high altitude also wishes to take along hisTelevision At very high altitudes, only CathodeRay Tube TV and ___ can work.
LCD TV
●The elements which are found in Haemoglobin,Chlorophyll, Chalcopyrite & Vitamin B12 arerespectively Iron. Magnesium, Copper, and ____.
Cobalt
●In which form is Protein in the pulses for morecorrectly legume) found?
Albumin
●The name of Karl Landsteiner is associated with thediscovery of ____.
Human Blood Groups
●A molecule is a smallest part of matter whichpossesses all properties of original matter. Amolecule is electrically ____.
Neutral
●A ray passing from denser to rarer medium and notable to pass to rarer medium at an angle greaterthan critical angle shows the phenomenon of ____.
Total Internal Reflection
●Equal volumes of all gases contain equal number ofmolecules under similar conditions of temperatureand pressure. Which law says this?
Avogadro’sLaw
●Glycine max which is called Soya bean has highprotein content as we all know. 100 g of Soyabeanhas how much of Protein?
20-30 grams/100gram
●Hepatitis A which is the most common cause ofjaundice in young people is an infection of liver by____.
Virus
●Leishmaniasis is a disease caused by protozoanparasites that belong to the genus Leishmania andis transmitted by the bite of certain species of____.
Sand Fly
●Poliomyelitis known as Polio is caused by anenterovirus which causes paralysis of muscles.This virus has a particular affinity to the nervecells of ___.
Spinal Cord
●Sickle cell anemia. Albinism. Color blindness,phenylketonuria, Klinefelter syndrome, Turnersyndrome & Down syndrome are mainly groupedas ___.
Congenital diseases
●The chemical oxygen demand COD test is commonlyused to measure amount of ___ in water.
Organic Compound
●Two Flat mirrors are placed at an angle of 60° fromeach other. How many images will be formed of aCandle placed in between them?
5
●What will be the motion of a bullet which is firedhorizontally from a Supersonic jet Fighter whichis also moving Horizontal to surface of the Earth?
Projectile
●When light from some sources enters to the earth’satmosphere, it gets scattered. What causes thisscattering?
Dust, smoke and gas molecules
●When the body’s immune system cells destroy theinsulin producing beta cells of the pancreas istermed as ____.
Type I diabetes
●When two mercury drops are brought into contactthey form a single bigger drop to get minimum ____.
Surface Area
●Which action is in the process of a liquid rising in thesyringe when the piston is pulled up?
Atmospheric Pressure
●Which term denotes the internal reaction force perunit area developed as a result of applied externalforce?
Stress
●___ is the most common and the oldest method forwaste disposal management, incineration is thesecond largest method for waste disposalmanagement in most of the countries around theworld.
Landfill
●___ tyres create more friction with the road,increasing fuel consumption by up to ten per centand are prone to skidding on either wet orslippery surfaces.
Under-inflated tyres
●____ is the enzyme in nitrogen-fixing bacteria thatcatalyzes the conversion of atmospheric nitrogeninto ammonia.
Nitrogenase
●Biogas or Gobar gas is produced by the ___ ofbiodegradable materials such as biomass, manure,sewage, municipal waste, green waste, plantmaterial, and crops.
Anaerobic digestion
●Poliomyelitis, often called polio or infantile paralysis,is an acute, viral, infectious disease spread fromperson to person, primarily via the ___ route.
Fecal-oral
●Uranium-238 is fissionable by fast neutrons, and isfertile, meaning it can be transmuted to fissile ___in a nuclear reactor.
Plutonium-239
●What is a partially vitreous by-product of the processof smelting ore, which separates the desired metalfraction from the unwanted fraction?
Slag
●What is a semiconductor device used to amplify andswitch electronic signals and electrical power?
Transistor
●Which is the phenomenon of the eye by which anafterimage is thought to persist for approximatelyone twenty-fifth of a second on the retina?
Persistence of vision
●Which medical device uses electrical impulses,delivered by electrodes contacting the heartmuscles, to initiate and regulate the beating of theheart?
Pacemaker
●Which white material produced by the calcination ofbones is primarily composed of calciumphosphate?
Bone ash
●The heat content of anthracite ranges from 22 to 28million ___ per short ton on a moist, mineral-matter-free basis.
Btu
●____ are used in endoscopic instruments that enabledoctors to view internal body parts withouthaving to perform surgery.
Optical fibres
●Sound that is perceptible by humans has frequenciesfrom about 20 Hz to 20,000 Hz. In air at standardtemperature and pressure, the correspondingwavelengths of sound waves range from 17 m to___.
17 mm
●Cane-sugar is carbohydrate and as this name implies,is composed of carbon, hydrogen and ___.
Oxygen
●A growth fertilizer has a high N content andrelatively low P and K content. Which is thehighest Nitrogen fertilizer one can buy?
Ammonium nitrate
●What is the chemical term for is a white solid that iscrystalline but often appears as a fine powder; hasa slightly salty and alkaline taste resembling thatof washing soda?
Sodium bicarbonate
●An atomic pile is a nuclear reactor that usescontrolled nuclear fission to generate energy. Themost common reactor consists of a large assemblyof ____.
Graphite
“●Penicillin is produced from the genus of fungi”“penicillia””. All penicillin are ___ antibiotics andare used in the treatment of bacterial infectionscaused by susceptible, usually Gram-positive,organisms.”
â-lactam
●Lymph is essentially recycled blood ___ after it hasbeen filtered from the blood cells and returned tothe lymphatic system.
Plasma
●Our bones and teeth are generally made up of Tri-calcium Phosphate which is calcium salt of ___.
Phosphoric acid
●What is the term for the scientific method of datingbased on the analysis of patterns of tree rings, alsoknown as growth rings?
Dendrochronology
●A certain sodium salt is most widely used in acidicfoods such as salad dressings (vinegar),carbonated drinks (carbonic acid), jams and fruitjuices (citric acid), pickles (vinegar), andcondiments. What is it?
Sodium Benzoate
A hydrocarbon compound containing carbon andhydrogen joined together in straight chains,branched trains or non-aromatic rings, is knownas:
Aliphatic compound
●Which is a natural preservative/conservative used toadd an acidic, or sour, taste to foods and softdrinks?
Citric Acid
●Which enzyme is located in the plasma membrane ofvirtually every human cell and is common to allcellular life?
Sodium-potassium pump
●The inheritance of acquired characteristics is ahypothesis that physiological changes acquiredover the life of an organism (such as theenlargement of a muscle through repeated use)may be transmitted to offspring. It is alsocommonly referred to as the ____.
Theory ofAdaptation
●Cements harden because of ___, chemical reactionsthat occur independently of the mixture’s watercontent.
Hydration
●What is the term for chemical elements which haveatomic numbers between 90 and 109 andinclusively occur between Groups 3 and 4 inPeriod 7 of the periodic table?
Actinides
●Which of the following diseases can be transmittedfrom one person to another through tattooing?
Hepatitis B and HIV-AIDS
●Many transplanted seedlings do not grow becausemost of the root hairs are lost during ___.
Transplantation
●The vegetation of hot desert climate is xerophytictype which has special characteristics to withstandvery high rate of evaporation. They have:
longroots, thick barks, waxy leaves, thorns and littleleaves
●Friction is independent of surface area of contact.However, it depends upon the nature of materialof surfaces in contact, their roughness, smoothnessand ___.
Inclination
●Size of the sun at dusk, Colour of the sun at dawnand Twinkle of stars in the sky are very goodexamples of:
Optical Illusion
●A rainbow is always formed in a direction opposite tothat of the Sun. The water droplets act like small____.
Prisms
●In which state of India is lion-tailed macaque foundin its natural habitat?
Tamil Nadu, Kerala andKarnataka
●Mycorrhizal biotechnology has been used inrehabilitating degraded sites because Mycorrhizaenables the plants to resist drought and increaseabsorptive area, tolerate extremes of PH, and____.
Resist disease infestation
●Niter is the mineral form of potassium nitrate, KNO3,also known as:
Saltpeter
“●The oral polio vaccine (OPV), also called ““trivalentoral polio vaccine”” or ““Sabin vaccine””, consists ofa mixture of live, attenuated (weakened)poliovirus strains of all three poliovirus types. Itwas developed in 1961 by ____.”
Albert Sabin
●Calcium is a mineral not only essential for bonehealth, but it is also required for muscularcontraction. Which mineral aids in nervetransmission and muscle contraction?
Sodium
●Which is a highly contagious but non-threateningdisease caused by primary infection with varicellazoster virus (VZV)?
Chickenpox
●What are used to construct gyrocompasses, whichcomplement or replace magnetic compasses (inships, aircraft and spacecraft, vehicles in general)and to assist in stability?
Gyroscopes
●Which device converts signals produced by one typeof device (as a computer) to a form compatiblewith another (as a telephone)?
Modem
●Vitamin D3 is produced by ultraviolet irradiation(UV) of its precursor 7-dehydrocholesterol. Bywhich other name is it known?
Cholecalciferol
●Caecum is a pouch that is considered to be thebeginning of the large intestine. The pylorus is theregion of the stomach that connects to the _____.
Duodenum
●What is the term for collection of techniques used tomaintain or grow plant cells, tissues or organsunder sterile conditions on a nutrient culturemedium of known composition?
Plant tissueculture
●The _____ plays a key role in memory, attention,perceptual awareness, thought, language, andconsciousness.
Cerebral cortex
●Paraffin wax refers to a white or colourless soft solidthat is used as a lubricant and for otherapplications. It is derived from:
Petroleum
●What is the term for a dimensionless quantityrepresenting the ratio of speed of an objectmoving through a fluid and the local speed ofsound?
Mach Number
●If force is expressed in Newton and the distance inmeter, then the work done is expressed in:
Joule
●The volume of which of the following materialsdecreases when it is heated from 0°C to 5°C?
Water
●’Archaeopteryx’ is a connecting link between whichof the following classes of animal?
Reptilia andAves
●Pearl is mainly constituted of:
Calcium Carbonate
●When a person enters in a dark room from stronglight area, he is not able to see clearly for sometime. Later he gradually begins to see things. Thisis because:
Eyes become familiar with darknessin course of time
●For which desirable character the transgenic crop’Golden Rice’ is produced?
Vitamin A
●Increasing the amount of pesticides in the organismsof successive trophic level is known as:
Bio-magnification
●Purified ____ is a semiconductor, with appearancemost similar to elemental silicon and naturallyreacts and forms complexes with oxygen in nature.
Germanium
●Polytetrafluoroethylene (PTFE) is a syntheticfluoropolymer of tetrafluoroethylene that findsnumerous applications. The best known brandname of PTFE is:
Teflon
●Which gas comprises primarily methane (CH4) andcarbon dioxide (CO2) and may have smallamounts of hydrogen sulphide (H2S), moistureand siloxanes?
Gobar Gas
●Seaweed is a source of iodine, necessary for thyroidfunction and to prevent:
Goitre
●Echoes from the waves are analyzed by computer toproduce a moving or still picture, called a ____, ona screen.
Sonogram
●The middle ear contains three tiny bones known asthe ossicles: malleus, incus, and:
Stapes
●One cup of cooked spinach provides one with 6.5 mgof which element/metal which is an essentialmineral needed by the human body and is acomponent of many proteins, includinghemoglobin?
Iron
●Which has the distinction of being the only naturallyoccurring fissile isotope?
Uranium-235
●Which is a predatory arthropod animal, easilyrecognized by the pair of grasping claws and thenarrow, segmented tail, often carried in acharacteristic forward curve over the back,ending with a venomous stinger?
Scorpion
●Starch or ____ is a carbohydrate consisting of a largenumber of glucose units joined by glycosidicbonds.
Amylum
●Which physical phenomenon was scientificallydetermined that a frame rate of less than 16frames per second (frame/s) caused the mind tosee flashing images?
Persistence of Vision
●Which technique allows the temperature to belowered so far that food can be stored for days oreven months?
Refrigeration
●At either end (both the generator and at the loads),voltage levels are reduced by ____ for saferoperation and less expensive equipment.
Transformers
●Electricity is transmitted at high voltages to reducethe energy lost in long-distance transmission.What does high voltage signify here?
110 kV orabove
●Which instrument converts sound energy to electricalenergy which is used as an output using sameenergy level amplified or it could be used torecord those same energy output and pattern toobe played again?
Microphone
●Which type of radiation is used to killmicroorganisms, molds and fungus in variousenvironmental applications?
Ultravioletradiation
●Of the three mediums (gas, liquid, and solid) whichtype of waves travel the slowest through gases,faster through liquids, and fastest through solids?
Sound waves
●___ are usually motionless organisms that absorbnutrients for survival. They include mushrooms,molds, and yeasts.
Fungi
.____ studies the distribution and abundance of livingorganisms, and the interactions between organismsand their environment.
Ecology
●Protists are mostly single-celled organisms that have anucleus. They usually live in water. Examples ofprotists include some algae, paramecium, and ___.
amoeba
“●The conductivity of an atom is dependent on the ““freemotion”” of its loosely bound:”
electrons
●The first series in cellular respiration is glycolysis, thebreakdown of glucose. In this step, the enzymehexokinase phosphorylates adds a phosphate groupto glucose in the cell’s:
Cytoplasm
“●The theory of special relativity was proposed in _____by Albert Einstein in his article ““On theElectrodynamics of Moving Bodies””.”
1905
●The total complement of genes in an organism or cell isknown as its _____ which is stored on one or morechromosomes.
genome
●Typhoid fever is an infectious disease caused by thebacteria Salmonella typhi. It is also known as:
Enteric fever
●The human musculoskeletal system consists of thehuman skeleton, made by bones attached to otherbones with joints, and skeletal muscle attached tothe skeleton by:
Tendons
●What is the amount of a substance that contains asmany elementary entities as there are atoms in 0.012kilogram (or 12 grams) of carbon-12?
Mole
●Who was the first man to ever use the term humanbiology?
Ernst Freiherr von Blomberg
