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Chemistry Quiz
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The most electropositive element is:
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Which one of the following ions has the lowest magnetic moment?
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Which element can exhibit more than one oxidation state in compounds?
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Which of the following has the highest electron affinity?
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In which of the following compounds is the size of the cation to anion ratio minimum?
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The oxidation state of Cr in potassium dichromate and potassium chromate respectively, are:
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Which gaseous ion in its ground state has the greatest number of unpaired electrons?
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Select the correct order of ionic radii
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How many unpaired electrons are in a gaseous Fe2+ ion in its ground state?
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Which property of an element is most dependent on the shielding effect?
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An element having atomic number 56 belongs to which block?
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Aluminum is diagonally related to
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The correct order of atomic radii is
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The most electronegative element is
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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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Select the correct order of Ionization energy.
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Which relationship between the radii of these species is correct?
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Which of the following has maximum ionization enthalpy?
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Which of the following pair of atomic numbers represents s-block elements?
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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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A metallic oxide contains 66% of the metal. The equivalent weight of the metal is
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The law of reciprocal proportions can be used to determine.......
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Bassemerisation is carried out for
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Aluminium is used as reducing agent in the reduction of
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In which of the following metallurgy, no reducing agent is required from outside?
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Lead is mainly extracted by
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Silica is added to roasted copper ore during extraction in order to remove
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Copper is extracted from sulfide ore using this method
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Chromium is obtained by reducing concentrated Chromite ore with
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The most abundant metal in earth crust is
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The ore which is concentrated by wetting oil is
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Electromagnetic separation is used for the concentration of
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Froth flotation process for the concentration of sulfide ores is an illustration of the practical application of
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The two most abundant metals in the earth crust are
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Which one of the following types of metals is expected to occur in the native state?
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Cinnabar is an ore of
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Which one of the following is not the ore of Magnesium?
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Which one contains both Calcium and Magnesium
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The extraction of zinc from zinc blende is achieved by
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Highly electropositive metals can not be commercially extracted from carbon reduction process at high temperature because these
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The equivalent weight of calcium phosphate Ca3(PO4)2 is (Mol. wt. 310)
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Among the sodium halide, NaF has the highest melting point because of
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Among the following compounds, which has the maximum lattice energy?
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Born Haber cycle can be used to estimate
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The amount of energy released when an electron is added to its outermost shell of an atom is called
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Ionization enthalpy of an atom is equal to
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The ionization potential of Boron is less than that of Beryllium because
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Zinc and Cadmium metals do not show variable oxidation states because
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According to modern periodic law, the properties of elements repeat at regular intervals when elements are arranged in order of
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Transition metals are not characterized by
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The nucleus of an element contains 9 protons. Its valency would be
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Which of the following statements is incorrect about the adsorption theory?
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Quantum yield is related to...........
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Which of the following is used as a catalytic promoter?
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Stress corrosion, fatigue corrosion, and hydrogen embrittlement fall under the category of which type of corrosion?
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When Pt and Zn are electrically connected, which one gets corroded?
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Dry cell is an example of
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Rusting of Iron is enhanced by
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