MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The total number of lattice arrangements in different crystal systems is [KCET (Engg.) 2001] |
| A. | 3 |
| B. | 7 |
| C. | 8 |
| D. | 14 |
| Answer» C. 8 | |
| 2. |
In a crystal, the atoms are located at the position of [AMU 1985] |
| A. | Maximum P.E. |
| B. | Minimum P.E. |
| C. | Zero P.E. |
| D. | Infinite P.E. |
| Answer» C. Zero P.E. | |
| 3. |
How many molecules are there in the unit cell of sodium chloride [MP PMT 1996; MP PET 1997] |
| A. | 2 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» C. 6 | |
| 4. |
Crystals can be classified into ...... basic crystal habits [MP PMT 1994] |
| A. | 3 |
| B. | 7 |
| C. | 14 |
| D. | 4 |
| Answer» C. 14 | |
| 5. |
The three dimensional graph of lattice points which sets the pattern for the whole lattice is called |
| A. | Space lattice |
| B. | Simple lattice |
| C. | Unit cell |
| D. | Crystal lattice |
| Answer» D. Crystal lattice | |
| 6. |
What type of lattice is found in potassium chloride crystal [MP PMT 1996] |
| A. | Face centred cubic |
| B. | Body centred cubic |
| C. | Simple cubic |
| D. | Simple tetragonal |
| Answer» B. Body centred cubic | |
| 7. |
For tetrahedral coordination number, the radius ratio \[\frac{{{r}_{{{c}^{+}}}}}{{{r}_{{{a}^{-}}}}}\] is [KCET 2000] |
| A. | \[0.732-1.000\] |
| B. | \[0.414-0.732\] |
| C. | \[0.225-0.414\] |
| D. | \[0.155-0.225\] |
| Answer» D. \[0.155-0.225\] | |
| 8. |
The unit cell of a \[NaCl\] lattice |
| A. | Is body centred cube |
| B. | Has \[3N{{a}^{+}}\]ions |
| C. | Has \[4NaCl\] units |
| D. | Is electrically charged |
| Answer» D. Is electrically charged | |
| 9. |
The maximum radius of sphere that can be fitted in the octahedral hole of cubical closed packing of sphere of radius \[r\] is |
| A. | 0.732 \[r\] |
| B. | 0.414 \[r\] |
| C. | 0.225 \[r\] |
| D. | 0.155 \[r\] |
| Answer» C. 0.225 \[r\] | |
| 10. |
Ferrous oxide has a cubic structure and each edge of the unit cell is 5.0 Å. Assuming density of the oxide as \[4.0g-c{{m}^{-3}}\], then the number of \[F{{e}^{2+}}\] and \[{{O}^{2-}}\] ions present in each unit cell will be [MP PET 2000] |
| A. | Four \[F{{e}^{2+}}\] and four \[{{O}^{2-}}\] |
| B. | Two \[F{{e}^{2+}}\] and four \[{{O}^{2-}}\] |
| C. | Four \[F{{e}^{2+}}\] and two \[{{O}^{2-}}\] |
| D. | Three \[F{{e}^{2+}}\] and three \[{{O}^{2-}}\] |
| Answer» B. Two \[F{{e}^{2+}}\] and four \[{{O}^{2-}}\] | |
| 11. |
In a cubic structure of compound which is made from X and Y, where X atoms are at the corners of the cube and Y at the face centres of the cube. The molecular formula of the compound is [AIIMS 2000] |
| A. | \[{{X}_{2}}Y\] |
| B. | \[{{X}_{3}}Y\] |
| C. | \[X{{Y}_{2}}\] |
| D. | \[X{{Y}_{3}}\] |
| Answer» E. | |
| 12. |
In the crystal of \[CsCl,\] the nearest neighbours of each \[Cs\] ion are [MP PET 1993] |
| A. | Six chloride ions |
| B. | Eight chloride ions |
| C. | Six \[Cs\] ions |
| D. | Eight \[Cs\] ions |
| Answer» C. Six \[Cs\] ions | |
| 13. |
Coordination number for \[Cu\] is [AMU 1982] |
| A. | 1 |
| B. | 6 |
| C. | 8 |
| D. | 12 |
| Answer» E. | |
| 14. |
A compound is formed by elements \[A\]and \[B.\] This crystallizes in the cubic structure when atoms \[A\]are the corners of the cube and atoms \[B\] are at the centre of the body. The simplest formula of the compounds is [KCET 1993; CBSE PMT 2000; Kerala PMT 2002] |
| A. | \[AB\] |
| B. | \[A{{B}_{2}}\] |
| C. | \[{{A}_{2}}B\] |
| D. | \[A{{B}_{4}}\] |
| Answer» B. \[A{{B}_{2}}\] | |
| 15. |
In the calcium fluoride structure the co-ordination number of the cation and anions are respectively [J & K 2005] |
| A. | 6, 6 |
| B. | 8, 4 |
| C. | 4, 4 |
| D. | 4, 8 |
| Answer» C. 4, 4 | |
| 16. |
The co-ordination number of \[N{{a}^{+}}\] in \[NaCl\] is [Orrisa JEE 2005] |
| A. | 6 |
| B. | 8 |
| C. | 4 |
| D. | 1 |
| Answer» B. 8 | |
| 17. |
Which of the following statement(s) is(are) correct [IIT 1998] |
| A. | The coordination number of each type of ion in \[CsCl\] crystal is 8 |
| B. | A metal that crystallizes in \[bcc\] structure has a coordination number of 12 |
| C. | A unit cell of an ionic crystal shares some of its ions with other unit cells |
| D. | The length of the unit cell in \[NaCl\] is 552 \[pm\] \[({{r}_{N{{a}^{+}}}}=95\,\,pm;\,\,\,{{r}_{C{{l}^{-}}}}=181\,\,pm)\] |
| Answer» B. A metal that crystallizes in \[bcc\] structure has a coordination number of 12 | |
| 18. |
The coordination number of a metal crystallizing in a hexagonal close packed chep structure is [MP PMT 2004] |
| A. | 12 |
| B. | 8 |
| C. | 4 |
| D. | 6 |
| Answer» B. 8 | |
| 19. |
The number of atoms present in unit cell of a monoatomic substance of simple cubic lattice is [Pb. PMT 2004] |
| A. | 6 |
| B. | 3 |
| C. | 2 |
| D. | 1 |
| Answer» E. | |
| 20. |
Body centered cubic lattice has a coordination number of [AIIMS 1996; MP PMT 2002] |
| A. | 4 |
| B. | 8 |
| C. | 12 |
| D. | 6 |
| Answer» C. 12 | |
| 21. |
The number of \[C{{l}^{-}}\] ions around one \[N{{a}^{+}}\] in \[NaCl\] crystal lattice is [MP PET 1996; BVP 2004] |
| A. | 12 |
| B. | 4 |
| C. | 8 |
| D. | 6 |
| Answer» 3orr53t 1nsw5r:. 6 | |
| 22. |
Coordination number of \[N{{a}^{+}}\] ion in rock salt is [BVP 2004] |
| A. | 12 |
| B. | 4 |
| C. | 8 |
| D. | 6 |
| Answer» 3orr53t 1nsw5r:. 6 | |
| 23. |
In zinc blende structure the coordination number of \[Z{{n}^{2+}}\] ion is |
| A. | 2 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» C. 6 | |
| 24. |
In \[NaCl\] lattice the coordination number of \[C{{l}^{-}}\] ion is |
| A. | 2 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» D. 8 | |
| 25. |
In \[CsCl\] lattice the coordination number of \[C{{s}^{+}}\] ion is |
| A. | 2 |
| B. | 4 |
| C. | 8 |
| D. | 12 |
| Answer» D. 12 | |
| 26. |
What is the coordination number of sodium in \[N{{a}_{2}}O\] [AIIMS 2003] |
| A. | 6 |
| B. | 4 |
| C. | 8 |
| D. | 2 |
| Answer» C. 8 | |
| 27. |
The ratio of cationic radius to anionic radius in an ionic crystal is greater than 0.732. Its coordination number is [KCET 2003] |
| A. | 6 |
| B. | 8 |
| C. | 1 |
| D. | 4 |
| Answer» C. 1 | |
| 28. |
Potassium crystallizes in a \[bcc\] lattice, hence the coordination number of potassium in potassium metal is [KCEE 1993] |
| A. | 0 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» E. | |
| 29. |
An example of a non-stoichiometric compound is [NCERT 1983] |
| A. | \[A{{l}_{2}}{{O}_{3}}\] |
| B. | \[F{{e}_{3}}{{O}_{4}}\] |
| C. | \[Ni{{O}_{2}}\] |
| D. | \[PbO\] |
| Answer» C. \[Ni{{O}_{2}}\] | |
| 30. |
The structure of \[MgO\] is similar to \[NaCl.\] What would be the coordination number of magnesium |
| A. | 2 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» D. 8 | |
| 31. |
Most crystals show good cleavage because their atoms, ions or molecules are [CBSE PMT 1991] |
| A. | Weakly bonded together |
| B. | Strongly bonded together |
| C. | Spherically symmetrical |
| D. | Arranged in planes |
| Answer» E. | |
| 32. |
The coordination number of a metal crystallizing in a hexagonal close packed structure is [NCERT 1978; IIT 1999] |
| A. | 4 |
| B. | 12 |
| C. | 8 |
| D. | 6 |
| Answer» C. 8 | |
| 33. |
In which of the following substances the carbon atom is arranged in a regular tetrahedral structure [NCERT 1978] |
| A. | Diamond |
| B. | Benzene |
| C. | Graphite |
| D. | Carbon black |
| Answer» B. Benzene | |
| 34. |
In \[{{A}^{+}}{{B}^{-}}\]ionic compound, radii of \[{{A}^{+}}\]and \[{{B}^{-}}\]ions are \[180\,\,pm\] and \[187\,\,pm\] respectively. The crystal structure of this compound will be |
| A. | \[NaCl\] type |
| B. | \[CsCl\] type |
| C. | \[ZnS\] type |
| D. | Similar to diamond |
| Answer» C. \[ZnS\] type | |
| 35. |
In \[CsCl\] structure, the coordination number of \[C{{s}^{+}}\] is [MP PMT 2001] |
| A. | Equal to that of \[C{{l}^{-}}\], that is 6 |
| B. | Equal to that of \[C{{l}^{-}}\], that is 8 |
| C. | Not equal to that of \[C{{l}^{-}}\], that is 6 |
| D. | Not equal to that of \[C{{l}^{-}}\], that is 8 |
| Answer» C. Not equal to that of \[C{{l}^{-}}\], that is 6 | |
| 36. |
In a solid 'AB' having the \[NaCl\] structure, 'A' atoms occupy the corners of the cubic unit cell. If all the face-centered atoms along one of the axes are removed, then the resultant stoichiometry of the solid is [IIT Screening 2001] |
| A. | \[A{{B}_{2}}\] |
| B. | \[{{A}_{2}}B\] |
| C. | \[{{A}_{4}}{{B}_{3}}\] |
| D. | \[{{A}_{3}}{{B}_{4}}\] |
| Answer» E. | |
| 37. |
A solid has a structure in which \['W'\] atoms are located at the corners of a cubic lattice \['O'\] atoms at the centre of edges and \['Na'\] atoms at the centre of the cube. The formula for the compound is [KCET 1996] |
| A. | \[NaW{{O}_{2}}\] |
| B. | \[NaW{{O}_{3}}\] |
| C. | \[N{{a}_{2}}W{{O}_{3}}\] |
| D. | \[NaW{{O}_{4}}\] |
| Answer» C. \[N{{a}_{2}}W{{O}_{3}}\] | |
| 38. |
Potassium crystallizes with a [MP PET/PMT 1998] |
| A. | Face-centred cubic lattice |
| B. | Body-centred cubic lattice |
| C. | Simple cubic lattice |
| D. | Orthorhombic lattice |
| Answer» C. Simple cubic lattice | |
| 39. |
An \[A{{B}_{2}}\] type structure is found in [AIIMS 2002] |
| A. | \[NaCl\] |
| B. | \[A{{l}_{2}}{{O}_{3}}\] |
| C. | \[Ca{{F}_{2}}\] |
| D. | \[{{N}_{2}}O\] |
| Answer» D. \[{{N}_{2}}O\] | |
| 40. |
\[Na\] and \[Mg\] crystallize in BCC and FCC type crystals respectively, then the number of atoms of \[Na\] and \[Mg\] present in the unit cell of their respective crystal is [AIEEE 2002] |
| A. | 4 and 2 |
| B. | 9 and 14 |
| C. | 14 and 9 |
| D. | 2 and 4 |
| Answer» E. | |
| 41. |
The number of equidistant oppositely charged ions in a sodium chloride crystal is [MP PET 2001] |
| A. | 8 |
| B. | 6 |
| C. | 4 |
| D. | 2 |
| Answer» C. 4 | |
| 42. |
The number of close neighbour in a body-centred cubic lattice of identical sphere is [MP PET 2001] |
| A. | 8 |
| B. | 6 |
| C. | 4 |
| D. | 2 |
| Answer» B. 6 | |
| 43. |
The arrangement ABC ABC ABC ?.. is referred as [MP PET 2001] |
| A. | Octahedral close packing |
| B. | Hexagonal close packing |
| C. | Tetragonal close packing |
| D. | Cubic close packing |
| Answer» E. | |
| 44. |
Hexagonal close packing is found in crystal lattice of [MH CET 2002] |
| A. | \[Na\] |
| B. | \[Mg\] |
| C. | \[Al\] |
| D. | None of these |
| Answer» C. \[Al\] | |
| 45. |
In the rock salt structure, the number of formula units per unit cell is equal to |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» E. | |
| 46. |
In the closest packed structure of a metallic lattice, the number of nearest neighbours of a metallic atom is [JIPMER 2002] |
| A. | Twelve |
| B. | Four |
| C. | Eight |
| D. | Six |
| Answer» B. Four | |
| 47. |
An ionic compound has a unit cell consisting of A ions at the corners of a cube and B ions on the centres of the faces of the cube. The empirical formula for this compound would be [CBSE PMT 2004; AIEEE 2005] |
| A. | \[AB\] |
| B. | \[{{A}_{2}}B\] |
| C. | \[A{{B}_{3}}\] |
| D. | \[{{A}_{3}}B\] |
| Answer» D. \[{{A}_{3}}B\] | |
| 48. |
The close packing represents ABC ABC...... order of |
| A. | Body centred cubic packing |
| B. | Face centred cubic packing |
| C. | Simple cubic packing |
| D. | Hexagonal cubic closed packing |
| Answer» C. Simple cubic packing | |
| 49. |
A solid is made of two elements \[X\] and \[Z\]. The atoms \[Z\] are in CCP arrangement while the atom \[X\] occupy all the tetrahedral sites. What is the formula of the compound [UPSEAT 2004] |
| A. | \[XZ\] |
| B. | \[X{{Z}_{2}}\] |
| C. | \[{{X}_{2}}Z\] |
| D. | \[{{X}_{2}}{{Z}_{3}}\] |
| Answer» D. \[{{X}_{2}}{{Z}_{3}}\] | |
| 50. |
The ratio of close-packed atoms to tetrahedral holes in cubic close packing is [Pb. PMT 1998] |
| A. | 1 : 1 |
| B. | 1 : 2 |
| C. | 1 : 3 |
| D. | 2 : 1 |
| Answer» C. 1 : 3 | |