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Chemistry Quiz
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The most electropositive element is:
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Of the following elements, which one has the highest electronegativity?
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Select the correct order of electronegativity(E.N)
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The outer electronic configuration of K, Cu, and Cr are, respectively.
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Which element can exhibit more than one oxidation state in compounds?
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Which of the following is not an actinide?
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Which of the following has the highest electron affinity?
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What is the formula for the basic anhydride of Ba(OH)2?
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In which of the following compounds is the size of the cation to anion ratio minimum?
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Europium belongs to:
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Lattice energy of an ionic compound depends upon:
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What is the total number of the valence electrons in the peroxydisulphate ion?
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Which set of orbitals is listed in the sequential order of filling in a multi-electron atom?
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Identify the least stable ion amongst the following
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Which of the following ion has smallest radius?
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Which property of an element is most dependent on the shielding effect?
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Eka-aluminum and eka-silicon are known as:
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An element having atomic number 56 belongs to which block?
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Which of the following does not reflect the periodicity of elements?
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The ionization energy will be maximum for the process
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Ce(58) is a member of
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Which orbital fills completely immediately before 4f?
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Which relationship between the radii of these species is correct?
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Which of the following has the lowest ionization energy?
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Which of the following has the largest radius?
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Which of the following sets of ions represents a collection of isoelectronic species?
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The outer electronic configuration of most electronegative element is
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Which ion is not isoelectronic with O²-?
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What type of atoms do carbohydrates contain
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All of the following are true with respect to carbonyls EXCEPT:
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An electron is known to be in the n = 4 shell and the l = 2 subshell. How many possible combinations of quantum numbers could this electron have?
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If the equivalent weight of a trivalent metal is 32.7, the molecular weight of its chloride is
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The law of reciprocal proportions can be used to determine.......
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The ratio of the rates of diffusion of a given element to that of helium is 4. What will be the molecular weight of the element?
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The hydrogen phosphate of certain metals has the formula MHPO4. The formula of metal chloride would be
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Bassemerisation is carried out for
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Chromium is obtained by reducing concentrated Chromite ore with
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Extraction of aluminum from bauxite ore reduction is carried out by
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Rutile is separated from chalcopyrite by
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Chemical leaching is useful in the concentration of
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Electromagnetic separation is used for the concentration of
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The two most abundant metals in the earth crust are
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Which one of the following is not an ore of Aluminium?
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Natural refractory material used in furnaces is
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The extraction of zinc from zinc blende is achieved by
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Which of the following compounds has a negative enthalpy solution?
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Second electron gain enthalpy is
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The ionization energy will be higher when the electron is removed from
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Elements having highest ionization potential value is
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Which of the following anion has the smallest radius?
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Which of the following pair of elements belongs to the same period?
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Which of the following is not a representative element?
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Zinc and Cadmium metals do not show variable oxidation states because
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Transition metals are not characterized by
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Which of the following statements is incorrect about the adsorption theory?
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From which of the following types of corrosion cavities or holes are produced on a metal surface?
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When Pt and Zn are electrically connected, which one gets corroded?
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The type of corrosion that is very dangerous and difficult to monitor is
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Rusting of Iron is enhanced by
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which one of the following elements shows both positive and negative oxidation state?
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