Download App

The Solid State — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryThe Solid State3 Marks
Question
Match the types of defect given in Column I with the statement given in Column II.
  Column I   Column II
(i) Impurity defect (a) $NaCl$ with anionic sites called $F-$centres.
(ii) Metal excess defect (b) $FeO $with $Fe^{3+}.$
(iii) Metal deficiency defect (c) $NaCl$ with $Sr^{2+}$ and some cationic sites vacant.
✓

Answer

  Column I   Column II
(i) Impurity defect (c) $NaCl$ with $Sr^{2+}$ and some cationic sites vacant.
(ii) Metal excess defect (a) $NaCl$ with anionic sites called F-centres.
(iii) Metal deficiency defect (b) $FeO$ with $Fe^{3+}.$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "3 Marks Question" from The Solid State→The Solid State — all question types→Chemistry STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

How would you account for the following:
  1. Among lanthanoids, Ln (III) compounds are predominant. However, occasionally in solutions or in solid compounds, $+2$ and $+4$ ions are also obtained.
  2. The $E^o_{M^{2+}/M}$ for copper is positive $(0.34V)$. Copper is the only metal in the first series of transition elements showing this behaviour.
  3. The metallic radii of the third $(5d)$ series of transition metals are nearly the same as those of the corresponding members of the second series.
→
Describe for any two of the following complex ions, the type of hybridization, shape and magnetic property:
  1. $[Fe(H_2O_6)]^{2+}$
  2. $[Co(NH_3)_6]^{3+}$
  3. $[NiCl_4]^{2-}$
(At. Nos. Fe = 26, Co = 27, Ni = 28).
→
  1. Based on the nature of intermolecular forces, classify the following solids:
Silicon carbide, Argon
  1. $ZnO$ turns yellow on heating. Why?
  2. What is meant by groups $12-16$ compounds? Give an example.
→
Write down the IUPAC name for the following complex and indicate the oxidation state, electronic configuration and coordination number. Also give stereochemistry and magnetic moment of the complex:
$[Co(NH_3)_5Cl-]Cl_2$
→
Calculate the magnetic moment of a divalent ion in aqueous solution if its atomic number is $25$.
→
Answer the following questions:
Give reasons:
  1. Among transition metals, the highest oxidation state is exhibited in oxoanions of a metal.
  2. $Ce^{4+}$ is used as an oxidising agent in volumetric analysis.
  3. $Zn^{2+}$​​​​​​​ salts are white while $Cu^{2+}$​​​​​​​ salts are blue.
→
Write the structures of fragments produced on complete hydrolysis of DNA. How are they linked in DNA molecule? Draw a diagram to show pairing of nucleotide bases in double helix of DNA.
→
  1. What are micelles? How do they differ from ordinary colloidal particles? Give two examples of micelles forming substances.
  2. State Hardy-Schulze rule.
→
  1. Out of $(CH_3)_3C–Br$ and $(CH_3)_3C–I$, which one is more reactive towards $S_N1$ and why?
  2. Write the product formed when p-nitrochlorobenzene is heated with aqueous NaOH at $443K$ followed by acidification.
  3. Why dextro and laevo–rotatory isomers of Butan-2-ol are difficult to separate by fractional distillation?
→
A monomer of a polymer upon ozonolysis gives one mole of methylglyoxal and two moles of formaldehyde.
  1. Identify the monomer of the polymer.
  2. Give its free radical mode of addition polymerisation.
→