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Chemistry Quiz
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Which one of the following ions has the lowest magnetic moment?
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Select the correct order of electronegativity(E.N)
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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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Which of the following is not an actinide?
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Which of the following is the strongest base?
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Which elements exhibit the greatest number of oxidation states in its compounds?
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Which one of the following is amphoteric oxide?
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Europium belongs to:
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The oxidation state of Cr in potassium dichromate and potassium chromate respectively, are:
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Which shows the highest lattice energy?
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What is the total number of the valence electrons in the peroxydisulphate ion?
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What is the number of unpaired electrons in a Manganese atom(25) in its lowest energy state?
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Ionic radii are
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Which of the following molecule has higher lattice energy?
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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 among the following element has the lowest value of ionization energy?
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The ionization energy will be maximum for the process
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Which of the following has the lowest ionization energy?
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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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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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In REDOX reaction, the oxidizing agent:
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The vapour density of a gas is 22. Its molecular weight will be.........
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The modern atomic weight scale is based on.........
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Aluminium is used as reducing agent in the reduction of
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Copper is extracted from sulfide ore using this method
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The element which is recovered from the electrolytic process is
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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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Which one of the following is not a method of concentration of ore?
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Haematite ore is concentrated by
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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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Three most occurring elements into the earth crust are
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A mineral is usually associated with a large amount of unwanted material called
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The two most abundant metals in the earth crust are
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Which one of the following elements is most abundant in the earth crust?
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Cinnabar is an ore of
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Which one of the following is not an ore of Aluminium?
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Which one of the following is not the ore of Magnesium?
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Natural refractory material used in furnaces is
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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 percentage of P2O5 in diammonium phosphate (NH4)2HPO4 is
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The equivalent weight of calcium phosphate Ca3(PO4)2 is (Mol. wt. 310)
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The formula of metallic hydroxide (eq. wt. = 150) is M(OH)2. x. H2O. If the atomic weight of the metal is 176 then, the value of x will be
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Which of the following compounds has a negative enthalpy solution?
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Which of the following is different from the other three oxides?
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Ionization enthalpy of an atom is equal to
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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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Which of the following is not a representative element?
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Choose the correct statement regarding the transition elements.
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The nucleus of an element contains 9 protons. Its valency would be
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Which of the following is used as a catalytic promoter?
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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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During electro galvanizing technique, which metal is used to protect steels against corrosion?
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