Description : Why is Dalton credited with proposing the first atomic theory if Democritus was talking about atoms almost 2200 years earlier?
Last Answer : What is the answer ?
Description : Who was the first to use the term `State'? (1) Hobbes (2) Plato (3) Aristotle (4) Machiavelli
Last Answer : (4) Machiavelli Explanation: Machiavelli has been credited with formulating for the first time the "modern concept of the state". The term '10 stato' appears widely in Machiavelli's writings, especially in The Prince, in connection with the acquisition and application of power in a coercive sense.
Description : “Woman is more compassionate than man and has a greater propensity to tears... But the male... is more disposed to give assistance in danger, and is more courageous than the female”. It is said by a. Plato. b. Aristotle. c. Immanuel Kant. d. None of them.
Last Answer : b. Aristotle.
Description : The theory of spontaneous generation of life was proposed by: (a) Aristotle (b) Lamark (c) Leewen hock (d) Louis Pasteur
Last Answer : Ans:(a)
Description : The modern atomic theory was conceived by : w) Victor Grignard x) Daniel Rutherford y) Svante Arrhenius z) John Dalton
Last Answer : ANSWER: Z -- JOHN DALTON
Description : The statement, "In regions where fluid velocity is smaller, the pressure is higher, and vice versa", is known as the principle of: w) Pascal x) Bernoulli y) Torricelli z) Archimedes
Last Answer : ANSWER: X -- BERNOULLI
Description : One of these scientists formulated basic laws of Geometry? A. Pythagorus (Answer) B. Archimedes C. Aristotle D. None
Last Answer : A. Pythagorus (Answer)
Description : Mendeleev proposed the existence of an unknown element that he called eka-aluminum. The element is now called: w) magnesium x) silicon y) gallium z) germanium
Last Answer : ANSWER: C -- GALLIUM
Description : The word atom is from a Greek word meaning: w) small x) indivisible y) unseen z) visible
Last Answer : ANSWER: X -- INDIVISIBLE
Description : Who proposed first atomic theory? (1) E.Rutherford (2) De Broglie (3) John Dalton (4) D.I.Mendeleef
Last Answer : (3) John Dalton Explanation: Democritus first suggested the existence of the atom but it took almost two millennia before the atom was placed on a solid foothold as a fundamental chemical object by John Dalton (1766-1844).
Description : Who proposed first atomic theory? (1) E. Rutherford (2) De Broglie (3) John Dalton (4) D. I. Mendeleev
Description : How many calories are required to raise the temperature of 20 grams of water from 40 degrees to 60 degrees? w) 40 cal x) 400 cal y) 20 cal z) 200 cal
Last Answer : ANSWER: X -- 400 cal
Description : Which two Greek philosophers studied in ancient Egypt?
Last Answer : i
Description : The concept of “Omnis cellula-e-cellula” regarding cell division was first proposed by (a) Aristotle (b) Rudolf Virchow (c) Theodore Schwann (d) Schleiden.
Last Answer : (b) Rudolf Virchow
Description : Which of the following scientists first determined the atomic number of an atom by use of X-rays? Is it: w) Millikan x) Planck y) Thompson z) Moseley
Last Answer : ANSWER: Z -- MOSELEY
Description : Who was the first American chemist to receive a Nobel Prize? He was selected in 1914 for his precise determination of atomic weights. w) Edward Frankland x) Theodore Richards y) John Bardeen z) Paul Dirac
Last Answer : ANSWER: X -- THEODORE RICHARDS
Description : Who proposed Binomial Nomenclature? (1) Linnaeus (2) John Ray (3) Huxley (4) Aristotle
Last Answer : (1) Linnaeus Explanation: Binomial nomenclature is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin gram-matical ... to Swedish natural scientist Carl Linnaeus, effectively beginning with his work 'Species Plantarum' in 1753.
Description : heory of panspermia is proposed by a. Aristotle b. Oparin and Haldane c. Richter and Arrhenius d. None of the above
Last Answer : d. None of the above
Description : Who proposed Binomial Nomenclature ? (1) Linnaeus (2) John Ray (3) Huxley (4) Aristotle
Last Answer : Linnaeus
Description : The atomic number of a nucleus will increase by 1 if which of the following is emitted by the nucleus? w) an alpha particle x) a positron y) a beta particle z) a gamma ray
Last Answer : ANSWER: Y -- BETA PARTICLE
Description : When a radioisotope undergoes beta minus decay, does its atomic number: w) increase x) decrease y) remain the same z) vary depending on the element involved
Last Answer : ANSWER: W -- INCREASE
Description : Which of the following has the smallest atomic radius? w) iodine x) chlorine y) fluorine z) bromine
Last Answer : ANSWER: Y -- FLUORINE
Description : AS A GROUP, the halogens have the largest: w) atomic radii x) Boiling points y) electronegativities z) ionization energies
Last Answer : ANSWER: Y -- ELECTRONEGATIVITIES
Description : Compared to Chlorine, Bromine has: w) smaller atomic size x) higher density y) lower boiling point z) greater number of outer electrons
Last Answer : ANSWER: X -- HIGHER DENSITY
Description : Of the following elements which has the largest atomic radius? w) Ba x) F y) C z) Be
Last Answer : ANSWER: W -- Ba
Description : Solids may be considered to be either crystalline noncrystalline. The basic difference between them is that a crystal, in contrast to a noncrystal: w) has a sharp melting point x) has an irregular array of atoms y) exhibits double refraction z) has a completely regular atomic or molecular structure
Last Answer : ANSWER: Z -- HAS A COMPLETELY REGULAR ATOMIC OR MOLECULAR STRUCTURE
Description : Which of the following four elements has the largest atomic radius? Is it: w) strontium x) francium y) calcium z) bromine
Last Answer : ANSWER: X -- FRANCIUM
Description : As one goes across a period in the periodic table, the ionization energy generally increases for one of the following reasons. Is it because of the increasing w) atomic radius x) melting point y) nuclear charge z) density
Last Answer : ANSWER: Y -- NUCLEAR CHARGE
Description : The halogen with the largest atomic radius is: w) Cl x) I y) Br z) At
Last Answer : ANSWER: Z -- At
Description : What did Aristotle refer to as the flaw or error that brings about suffering for the protagonist of a Greek tragedy?
Last Answer : He depicts the downfall of a basically good person through some fatal error or misjudgment, producing suffering and insight on the part of the protagonist and arousing pity and fear on the part of the audience
Description : Who was an ancient philosopher that first proposed the atomic theory?
Last Answer : Leucippus (approx. 500 BC) and Democritus (approx. 460-370BC)
Description : First Atomic theory was proposed by? A. John Dalton (Answer) B. E.Rutherford C. De Broglie D. D.I.Mendeleef
Last Answer : A. John Dalton (Answer)
Description : At one atmosphere, a cylinder with movable piston contains 2,000 milliliters of gas. If the pressure is increased to 5 atmospheres and the temperature remains unchanged, what is the new volume of the gas? w) 10,000 milliliters x) 400 milliliters y) 1,000 milliliters z) 4,000 milliliters
Last Answer : ANSWER: X -- 400 MILLILITERS
Description : A transformer has a turns ratio of two to one. If a 100 ohm resistor is connected on the high side, its resistance as measured on the low side would be: w) 25 ohms x) 50 ohms y) 100 ohms z) 400 ohms
Last Answer : ANSWER: W -- 25 OHMS
Description : Two identical resistors are connected in parallel and consume 200 watts together. A third identical resistor is added in parallel. The total power consumed is: w) 100 watts x) 200 watts y) 300 watts z) 400 watts
Last Answer : ANSWER: Y -- 300 WATTS
Description : One barrel of oil has about the same heat content as how much coal: w) 70 pounds x) 700 pounds y) 1,400 pounds z) 2,800 pounds
Last Answer : ANSWER: X -- 700 POUNDS
Description : The speed of sound (at sea level) in air is: w) 340 meters per second x) 400 meters per second y) 500 meters per second z) 760 kilometers per second
Last Answer : ANSWER: W -- 340 METERS PER SECOND
Description : When a person stands on a scale in an elevator at rest, the scale reads 800 newtons. When the elevator is allowed to fall freely with acceleration of gravity, the scale reads one of the following. Does the scale read: w) 1600 newtons x) 800 newtons y) 400 newtons z) 0 newtons
Last Answer : ANSWER: Z -- 0 NEWTONS
Description : In which of the branches of chemistry would the development of a theory about how a reaction takes place best be carried o w) analytical x) inorganic y) organic z) physical
Last Answer : ANSWER: Z -- PHYSICAL
Description : The theory of interionic attraction attributed to Debye and Hückel: w) was disproved by Arrhenius x) accounts quantitatively for the attraction between ions in dilute aqueous solutions y) does not account for kindered "ion-activity" z) accounts for intra-molecular polar bonds
Last Answer : ANSWER: X -- ACCOUNTS QUANTITATIVELY FOR THE ATTRACTION BETWEEN IONS IN DILUTE AQUEOUS SOLUTIONS
Description : My theory of electrolytic dissociation earned me t 1903 Nobel Prize in chemistry. My name is: w) Niels Bohr x) Svante Arrhenius y) Michael Faraday z) John Cavendish
Last Answer : ANSWER: X -- SVANTE ARRHENIUS
Description : Which theory advocates of ‘distributive justice’ (a) Amartya Sen Idea of Justice (b) Plato Theory of Justice (c) Rawls Theory of Justice (d) None of these
Last Answer : (c) Rawls Theory of Justice
Description : Name the Greek philosopher who first proposed the idea that matter was composed of small indivisible particles.
Last Answer : ANSWER: DEMOCRITUS
Description : What is the atomic number of Antimony? w) 33 x) 51 y) 85 z) 122
Last Answer : ANSWER: X -- 51
Description : The form of the fuel in U.S. commercial nuclear power plants is which of the following: w) uranium oxide ceramic pellets x) atomic vapor y) uranium metal tubes z) uranium solution in water
Last Answer : ANSWER: W -- URANIUM OXIDE CERAMIC PELLETS
Description : The father of the atomic bomb is: w) Einstein x) Oppenheimer y) Faraday z) Strangelove
Last Answer : ANSWER: X -- OPPENHEIMER
Description : What is the molecular mass of a gas that effuses through a small hole at twice the rate as oxygen gas at the same temperature. (The molecular mass of O2 is 32.) w) 8.0 atomic mass units x) 16 atomic mass units y) 48 atomic mass units z) 64 atomic mass units
Last Answer : ANSWER: W -- 8.0 ATOMIC MASS UNITS
Description : In Rutherford's experiment involving the deflection of alpha particles by atomic nuclei, the fact that some of the alpha particles bombarding the thin gold foil were back-scattered, led to one of the ... its nucleus z) the nucleus of a gold atom occupies nearly the entire space of the atom
Last Answer : ANSWER: Y -- MOST OF THE MASS OF A GOLD ATOM IS IN ITS NUCLEUS
Description : When an atom undergoes beta decay, the atomic number of the nucleus: w) is unchanged x) increases by one y) decreases by one z) none of the above
Last Answer : ANSWER: X -- INCREASES BY ONE