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Chemistry Quiz
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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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What is the total number of p electrons in a single phosphorus atom in its ground state?
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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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Which is the largest stable atom?
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Europium belongs to:
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The lanthanide contraction is responsible for the fact that:
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Which of the following ion has smallest radius?
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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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Ionic radii are
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An element of atomic number 29 belongs to
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Aluminum is diagonally related to
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Which electronic configuration of neutral atom will have the highest first ionization potential?
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Ce(58) is a member of
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Which of the following is isoelectronic with carbon atom?
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Select the correct order of Ionization energy.
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Of the element given, which has the lowest ionization energy?
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Which orbital fills completely immediately before 4f?
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Which of the following has the largest atomic size?
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Which of the following has the largest radius?
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The outer electronic configuration of most electronegative element is
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What type of atoms do carbohydrates contain
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The vapour density of a gas is 22. Its molecular weight will be.........
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The law of reciprocal proportions can be used to determine.......
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The modern atomic weight scale is based on.........
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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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The element which is recovered from the electrolytic process is
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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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Chemical leaching is useful in the concentration of
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The metal which mainly occurs as oxide ore in nature is
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A mineral is usually associated with a large amount of unwanted material called
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Which one contains both Calcium and Magnesium
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If a metal has low oxygen affinity then purification of metal may be carried out by
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The extraction of zinc from zinc blende is achieved by
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In the alumino-thermite process, Al acts as
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The process of isolation of a metal by dissolving the ore in suitable reagent followed by precipitation of metal by a more electropositive metals is called
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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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Which of the following compounds has a negative enthalpy solution?
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Among the sodium halide, NaF has the highest melting point because of
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Which of the following is different from the other three oxides?
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The ionization energy will be higher when the electron is removed from
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Which of the following anion has the smallest radius?
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Which of the following metals is the highest electropositive in nature?
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Choose the correct statement regarding the transition elements.
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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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The number of element present in fifth period is
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Quantum yield is related to...........
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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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The type of corrosion that is very dangerous and difficult to monitor is
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During electro galvanizing technique, which metal is used to protect steels against corrosion?
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Rust is hydrated
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Rusting of Iron is enhanced by
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