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The questions given below consist of an ...

The questions given below consist of an Assertion and the Reason. Use the following key to choose the appropriate answer : (a) If both assertion and reason are CORRECT and reason is the correct explanation of the assertion. (b) If both assertion and reason are CORRECT, but reason is NOT THE CORRECT explanation of the assertion. (c) If assertion is CORRECT but reason is INCORRECT. (d) If assertion is INCORRECT but reason is CORRECT. (e) If both assertion and reason are INCORRECT. Assertion : Tungsten has very high melting point. Reason : Tungsten is a covalent compound.

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The questions given below consist of an Assertion and Reason. Use the following key to choose the appropriate answer. (a) If both assertion and reason are CORRECT and reason is the correct explanation of the assertion. (b) If both assertion and reason are CORRECT, but reason is NOT THE CORRECT explanation of the assertion. (c) If assertion is CORRECT but, reason is INCORRECT. (d) If assertion is INCORRECT but, reason is CORRECT. (e) If both assertion and reason are INCORRECT. Assertion : Ozone is a powerful oxidising agent in comparison to O_2 . Reason: Ozone is diamagnetic but O_2 is paramagnetic.

The questions given below consist of an Assertion and Reason. Use the following key to choose the appropriate answer. (a) If both assertion and reason are CORRECT and reason is the CORRECT explanation of the assertion. (b) If both assertion and reason are CORRECT, but reason is NOT THE CORRECT explanation of the assertion. (c) If assertion is CORRECT but reason is INCORRECT. (d) If assertion ig INCORRECT but reason ig CORRECT. (e) If both assertion and reason are INCORRECT. Assertion :Glycosides are hydrolysed in acidic conditions. Reason =: Glycosides are acetals.

The questions given below consist of an Assertion and a Reason. Use the following key to choose the appropriate answer. If both assertion and reason are CORRECT and reason is the CORRECT explanation of the assertion. If both assertion and reason and CORRECT, but reason is NOT THE CORRECT explanation of the assertion. If assertion is CORRECT but reason is INCORRECT. If assertion is INCORRECT but reason is CORRECT. If both assertion and reason are INCORRECT. Assertion: E^@ for Mn^(3+)|Mn^(2+) is more positive than Cr^(3+)|Cr^(2+) . Reason: The third ionistation energy of Mn is larger that than of Cr.

The questions given below consist of an assertion and the reason. Use the following key to choose the appropriate answer. (a) Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion. (b) The Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion.(c) Assertion is is CORRECT but reason is INCORRECT. (d) If assertion is INCORRECT but reason is CORRECT. (e)If both assertion and reason are INCORRECT. Assertion: In CaF_2, F^- ions occupy all the tetrahedral sites. Reason: The number of Ca^(2+) is double the number of F^- ions.

The questions given below consist of an assertion and the reason. Use the following key to choose the appropriate answer. (a) Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion. (b) The Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion.(c) Assertion is is CORRECT but reason is INCORRECT. (d) If assertion is INCORRECT but reason is CORRECT. (e)If both assertion and reason are INCORRECT. Assertion: Size of cation is larger in tetrahedral voids than in octahedral void. Reason: The cations occupy more space than anions in crystal close packing.

The questions given below consist of an assertion and the reason. Use the following key to choose the appropriate answer. (a) Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion. (b) The Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion.(c) Assertion is is CORRECT but reason is INCORRECT. (d) If assertion is INCORRECT but reason is CORRECT. (e)If both assertion and reason are INCORRECT. Assertion: ZnS is a tetrahedral arrangement. Reason:In ZnS, S^(2-) ions form cubic close packed structure.

The questions given below consist of an assertion and the reason. Use the following key to choose the appropriate answer. (a) Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion. (b) The Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion.(c) Assertion is is CORRECT but reason is INCORRECT. (d) If assertion is INCORRECT but reason is CORRECT. (e)If both assertion and reason are INCORRECT. Assertion: FeO is non-stoichiometric with Fe_(0.95)O . Reason: Some Fe^(2+) ions are replaced by Fe^(3+) as 3Fe^(2-)=2Fe^(3+) to maintain electircal neutrally.

The questions given below consist of an assertion and the reason. Use the following key to choose the appropriate answer. (a) Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion. (b) The Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion.(c) Assertion is is CORRECT but reason is INCORRECT. (d) If assertion is INCORRECT but reason is CORRECT. (e)If both assertion and reason are INCORRECT. Assertion: Frenkel and Schottky defects are stoichiometric defects REason:Both defects change the density of the crystalline solid.

The questions given below consist of an assertion and the reason. Use the following key to choose the appropriate answer. (a) Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion. (b) The Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion.(c) Assertion is is CORRECT but reason is INCORRECT. (d) If assertion is INCORRECT but reason is CORRECT. (e)If both assertion and reason are INCORRECT. Assertion: In any time ionic solid with Schottky defects, the number of positive and negative ions are same. Reason: Equal number of cation and anion vacancies are present.

The questions given below consist of an assertion and the reason. Use the following key to choose the appropriate answer. (a) Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion. (b) The Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion.(c) Assertion is is CORRECT but reason is INCORRECT. (d) If assertion is INCORRECT but reason is CORRECT. (e)If both assertion and reason are INCORRECT. Assertion: In CsCl structure, the coordination number of Cs^+ ion is 8. Reason: Cl^- ions in CsCl have body centred cubic arrangement.

MODERN PUBLICATION-d-AND f- BLOCK ELEMENTS-EXERCISE
  1. Ce (Z = 58) and Yb (Z = 70) exhibit stable +4 and +2 oxidation states ...

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  2. Which of the following statements is not true?

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  3. The questions given below consist of an Assertion and the Reason. Use ...

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  4. Assertion : Cuprous salts are diamagnetic. Reason : Cu has 3d-filled...

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  5. Electronic configuration of Fe^2+.........

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  6. Assertion : La(OH)3 is less basic than Lu(OH)3 . Reason : Basic charac...

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  7. Assertion : FeCl3 reacts with KCNS to give blood red colouration. Re...

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  8. Sodium chloride is used to clear snow from roads. Explain.

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  9. Assertion : Zn^(2+) and Cu^(2+) are colourless. Reason : Both Zn^(2+) ...

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  10. Assertion : There is a continuous decrease in size among lanthanoids. ...

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  11. Assertion : Lanthanoids show a limited number of oxidation states wher...

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  12. Pt^(4+) is less/more stable than Ni^(4+) .

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  13. Match the element in Column I with the property mentioned in Column II

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  14. Find x in the following figures.

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  15. The answer to each of the following questions is a single- digit-integ...

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  16. The number of electrons present in the 4f-subshell of Gd (Z = 64) is

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  17. Write the iupac name of the compound : Li[Al H4]

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  18. The number of paramagnetic ions among Ti^(3+), Cr^(3+), Ti^(4+), Fe^(2...

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  19. The magnetic moment of a transition metal ion is found to be 4.90 BM. ...

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  20. The oxidation number of Mn in the product of alkaline oxidative fusion...

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