Chemistry Quiz

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chemistry 2

Chemistry Quiz

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The most electropositive element is:

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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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All of the following possess complete d-shell except

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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 set of orbitals is listed in the sequential order of filling in a multi-electron atom?

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Select the correct order of ionic radii

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Eka-aluminum and eka-silicon are known as:

 

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The correct order of atomic radii is

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The most electronegative element is

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Which electronic configuration of neutral atom will have the highest first ionization potential?

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Which of the following is isoelectronic with carbon atom?

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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 element is not a p-block element?

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Which of the following has the lowest 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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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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Which ion is not isoelectronic with O²-?

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Which of the following ion has the largest radius?

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A metallic oxide contains 66% of the metal. The equivalent weight of the metal is

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The vapour density of a gas is 22. Its molecular weight will be.........

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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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Aluminium is used as reducing agent in the reduction of

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Lead is mainly extracted by

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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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Extraction of aluminum from bauxite ore reduction is carried out by

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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 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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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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In the alumino-thermite process, Al acts as

 

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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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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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The element having a very high ionization potential but zero electron affinity is

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To which of the following elements, the addition of electrons is most difficult?

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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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The ionization energy will be higher when the electron is removed from

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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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The atomic numbers of metallic and non-metallic elements which are liquid at room temperature are

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The number of element present in fifth period is

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Zincification involves ........................metal.

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Dry cell is an example of

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Rust is hydrated

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In galvanic series, Which metals are most passive?

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Dry corrosion is

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which one of the following elements shows both positive and negative oxidation state?

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