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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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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All of the following possess complete d-shell except
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Which of the following set is of coinage metal?
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Which one of the following is amphoteric oxide?
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The metalloid among the following group of elements is:
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Which gaseous ion in its ground state has the greatest number of unpaired electrons?
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Which of the following has lowest ionization enthalpy?
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Which of the following has largest size
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How many unpaired electrons are in a gaseous Fe2+ ion in its ground state?
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An element of atomic number 29 belongs to
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Which of the following does not reflect the periodicity of elements?
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Which of the following is isoelectronic with carbon atom?
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Which element has the smallest first- ionization energy?
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Which of the following has maximum ionization enthalpy?
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Which of the following has the largest atomic size?
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The outer electronic configuration of most electronegative element is
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The electron with strong electropositive nature is
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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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Bassemerisation is carried out for
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Aluminium is used as reducing agent in the reduction of
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Lead is mainly extracted by
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Which one of the following is not a method of concentration of ore?
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The Froth flotation process is used for the concentration of the ore of
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A mineral is usually associated with a large amount of unwanted material called
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Which one of the following types of metals is expected to occur in the native state?
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Which one of the following is not an ore of Aluminium?
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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 amount of zinc (atomic weight 65) required to produce 224ml of H2 at STP on treatment with dilute H2SO4 will be
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The percentage of P2O5 in diammonium phosphate (NH4)2HPO4 is
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Which of the following compounds has a negative enthalpy solution?
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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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Second electron gain enthalpy is
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To which of the following elements, the addition of electrons is most difficult?
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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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The second ionization potential of elements is higher than its second ionization potential because
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Ionization enthalpy of an atom is equal to
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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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The period number and group number of Tantalum (z=73) are respectively
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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 atomic numbers of metallic and non-metallic elements which are liquid at room temperature are
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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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Rusting of iron is an example of
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The type of corrosion that is very dangerous and difficult to monitor is
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Dry cell is an example of
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In galvanic series, Which metals are most passive?
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Dry corrosion is
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