InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The trivalent ion having size in lanthanide series isA. TiB. ZrC. HfD. La |
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Answer» Correct Answer - D The trivalent ion having largest size in lanthanide series is lanthanum. This is due to lanthanide contraction. |
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| 2. |
In five-kingdom classification, Slime Moulds are included underA. MoneraB. ProtistaC. FungiD. Metaphyta. |
| Answer» Correct Answer - B | |
| 3. |
The book Genera plantarum was written byA. BesseyB. Engler and PrantlC. Carolus linnaeusD. Hutchinson |
| Answer» Correct Answer - C | |
| 4. |
Which one of the following is an incorrect statementA. The ionisation potential of nitrogen is greater than that of oxygenB. The electron affinity of fluorine is greater than that of chlorineC. The ionisation potential of beryllium is greater than that of boronD. The electronegativity of fluorine is greater than that of chlorine |
| Answer» Correct Answer - B | |
| 5. |
Electronegativity is a measure of the capacity of an atom toA. Attract electronsB. Attract protonsC. Repel electronsD. Repel protons |
| Answer» Correct Answer - A | |
| 6. |
Between HF, HCl, has the highest ionic character becauseA. F has the highest electron affinityB. In HF, electronegativity difference is highestC. `F^(-)` ion has the highest value of ionic radiusD. Atomic orbitals of H and F have almost similar energy |
| Answer» Correct Answer - B | |
| 7. |
Which will show maximum non-metallic characterA. BB. BeC. MgD. Al |
| Answer» Correct Answer - A | |
| 8. |
An ion has 18 electrons in the outermost shell it isA. `K^(+)`B. `Ca^(2+)`C. `Na^(+)`D. `Cu^(+)` |
| Answer» Correct Answer - D | |
| 9. |
Which is the weakest baseA. `NaOH`B. KOHC. `Ca(OH)_(2)`D. `Zn(OH)_(2)` |
| Answer» Correct Answer - D | |
| 10. |
the pentavalence in phosphorus is more stable as compared to that of nitrogen even though they belong to the same group. It is due toA. Reactivity of phosphorusB. Inert nature of nitrogenC. Dissimilar electronic configurationD. Larger size of phosphorus atom |
| Answer» Correct Answer - D | |
| 11. |
Which one of the ions in the table below would have the largest value of enthalpy of hydrationA. `{:("Ionic radius in nm","Charge of ion"),("(a) 0.0065",+2):}`B. `{:("Ionic radius in nm","Charge of ion"),("(b) 0.095",+1):}`C. `{:("Ionic radius in nm","Charge of ion"),("(c) 0.135",+2):}`D. `{:("Ionic radius in nm","Charge of ion"),("(d) 0.169",+1):}` |
| Answer» Correct Answer - A | |
| 12. |
Which metal exhibits more than one oxidation states in their compoundsA. NaB. MgC. FeD. Al |
| Answer» Correct Answer - C | |
| 13. |
The halogen that is most easily reduced isA. `F_(2)`B. `Cl_(2)`C. `Br_(2)`D. `I_(2)` |
| Answer» Correct Answer - A | |
| 14. |
The most stable oxidation state of thallium is +1 |
| Answer» Correct Answer - B | |
| 15. |
Arrange the following in increasing order of their atomic radius : Na, K, Mg, RbA. `MgltKltNaltRb`B. `MgltNaltKltRb`C. `MgltNaltRbltK`D. `NaltKltRbltMg` |
| Answer» Correct Answer - B | |
| 16. |
Correct order of polarising power isA. `Cs^(+)ltK^(+)ltMg^(2+)ltAl^(3+)`B. `K^(+)ltCs^(+)ltMg^(2+)ltAl^(3+)`C. `Cs^(+)ltK^(+)ltAl^(3+)ltMg^(2+)`D. `K^(+)ltCs^(+)ltAl^(3+)ltMg^(2+)` |
| Answer» Correct Answer - A | |
| 17. |
Spectrum of `Li^(2+)` is similar to that ofA. HB. HeC. BeD. Ne |
| Answer» Correct Answer - A | |
| 18. |
Highest density is of ……..A. ItB. OsC. PbD. Hg |
| Answer» Correct Answer - B | |
| 19. |
Which of the following is the correct order of ionic radiiA. `FgtLigtNagtK`B. `FgtKgtNagtLi`C. `NagtKgtFgtLi`D. `LigtNagtKgtF` |
| Answer» Correct Answer - B | |
| 20. |
In the isoelectronic species the ionic radii `(Å)` of `N^(3-), O^(2-)` and `F^(-)` are respectively given byA. 1, 36, 1.40, 1.71B. 1.36, 1.71, 1.40C. 1.71, 1.40, 1.36D. 1.71, 1.36, 1.40 |
| Answer» Correct Answer - C | |
| 21. |
Of the following, the one with largest size isA. `Cl^(-)`B. ArC. `K^(+)`D. `Ca^(2+)` |
| Answer» Correct Answer - A | |
| 22. |
Tnallium shows different oxidation states because:A. It is a transition elementB. Of inert pair effectC. Of its amphoteric characterD. Of its higher reactivity |
| Answer» Correct Answer - B | |
| 23. |
Which of the following relation is correct with respect to first (I) and second (II) ionisation potentials of sodium and magnesiumA. `I_(Mg)=II_(Na)`B. `I_(Na)gtI_(Mg)`C. `II_(Mg)gtII_(Na)`D. `II_(Na)gtII_(Mg)` |
| Answer» Correct Answer - D | |
| 24. |
Chemical property of Li and Mg are similar becauseA. These belong to same groupB. Both ionisation potential is sameC. Shows diagonal relationshipD. Both electron affinity is same |
| Answer» Correct Answer - C | |
| 25. |
`Al^(3+)` has low ionic radius than `Mg^(2+)` becauseA. Mg atom has less number of neutrons than AlB. `Al^(3+)` has a higher nuclear charge than `Mg^(2+)`C. `Their electronegative are differentD. Al has a lower ionisation potential than Mg atom |
| Answer» Correct Answer - B | |
| 26. |
Which of the following remains unchanged in descending in a group in the periodic table?A. Atomic sizeB. DensityC. Valence electronsD. Metallic character |
| Answer» Correct Answer - C | |
| 27. |
Elements in which 4f orbitals are progressively filled are called asA. Transition elementsB. LanthanidesC. ActinidesD. Inert gases |
| Answer» Correct Answer - B | |
| 28. |
Which of the following orders of ionic radii is correctly represented?A. `F^(-)gtO^(2-)gtNa^(+)`B. `Al^(3+)gtMg^(2+)gtNa^(3-)`C. `HgtH^(+)gtH^(-)`D. `Na^(+)gtF^(-)gtO^(2-)` |
| Answer» Correct Answer - C | |
| 29. |
Among the following transition elements, pick out the element/elements with highest second ionization energy (a) V(At. No. 23) (v) Cr(At. No. 24) (c) Mn(At. No. =25) (d) Cu (At. No. =29) (e) Zn(At. No.=30)A. (A) and (C )B. (B) and (D)C. (B) and (E)D. Only (D) |
| Answer» Correct Answer - B | |
| 30. |
Lithium shows similarities to magnesium in its chemical behaviour because.A. Similar size, same electronegativity and lower polarizing powerB. Similar size, greater electronegativity and similar polarizing powerC. Similar size, same electronegativity and similar high polarizing powerD. None of these |
| Answer» Correct Answer - C | |
| 31. |
Hydrogen has high ionization energy than alkali metals, due to its:A. Large sizeB. Small sizeC. Ionic bondD. Covalent bond |
| Answer» Correct Answer - B | |
| 32. |
Which of the following statements is are NOT TRUE about the diagonal relationship of Be and Al (i) Both react with NaOH to liberate hydrogen (ii) Their oxides are basic (iii) They are made passive by nitric acid (iv) Their carbides give acetylene on treatment with waterA. Only (i)B. (ii) and (iii)C. Only (iv)D. (ii) and (iv) |
| Answer» Correct Answer - D | |
| 33. |
Which of the following pairs show diagonal relationship?A. B and SiB. B and AlC. B and GaD. B and C |
| Answer» Correct Answer - A | |
| 34. |
The elements in which s and p-orbital are presentA. Common elementsB. Inert gasesC. HalogensD. Transitional elements |
| Answer» Correct Answer - B | |
| 35. |
Which of the following elements is a lanthanide (Rare-earth element)A. CadmiumB. CaliforniumC. CeriumD. Cesium |
| Answer» Correct Answer - C | |
| 36. |
Which of the following order is wrongA. `NH_(3)ltPH_(3)ltAsH_(3)` - acidic natureB. `Li^(+)ltNa^(+)ltK^(+)ltCs^(+)`-ionic radiusC. `Al_(2)O_(3)ltMgOltNa_(2)OltK_(2)O`-basicD. `LiltBeltBltClt1^(st)` ionisation potential |
| Answer» Correct Answer - D | |
| 37. |
Cause of diagonal relationship isA. Similar electronic configuration of the elementsB. Similar e/r ratio of the elementsC. Same number of valency electrons in the elementsD. Same atomic weights of the elements |
| Answer» Correct Answer - B | |
| 38. |
Properties of elements are periodic function of number of present in the nucleusA. ProtonsB. ElectronsC. NeutronsD. Mesons |
| Answer» Correct Answer - A | |
| 39. |
The electronic structure `(n-1) d^(1-10) ns^(0-2)` is characteristic ofA. Transition elementsB. LanthanidesC. ActinidesD. Rare gases |
| Answer» Correct Answer - A | |
| 40. |
Who is called the father of chemistryA. FaradayB. PriestleyC. RutherfordD. Lavoiser |
| Answer» Correct Answer - D | |
| 41. |
Which of the following is a normal elementA. CeB. HeC. LiD. Ar |
| Answer» Correct Answer - C | |
| 42. |
All the s-block elements of the periodic table are placed in the group…..A. IA and IIAB. IIIA and IVAC. B sub groupsD. VA to VIIA |
| Answer» Correct Answer - A | |
| 43. |
The telluric helix was given byA. De Chan CourtoisB. NewlandsC. L.MeyerD. Mendeleev |
| Answer» Correct Answer - A | |
| 44. |
The most important active step in the development of periodic table was taken byA. MendeleevB. DaltonC. AvogadroD. Cavendish |
| Answer» Correct Answer - A | |
| 45. |
The number of elements in each of the long periods in the periodic table isA. 2B. 8C. 18D. 32 |
| Answer» Correct Answer - C | |
| 46. |
The long form of periodic table is based onA. Shape of the atomB. Mass of the atomC. Atomic number of the atomD. Electronegativity |
| Answer» Correct Answer - C | |
| 47. |
The amount of energy which is released due to addition of ectra electron to the outermost orbit of gaseous atom is calledA. Electron capacityB. Electron affinityC. Ionisation potentialD. Electronegativity |
| Answer» Correct Answer - B | |
| 48. |
The long form of periodic table hasA. Eight horizontal rows and seven vertical columnsB. Seven horizontal rows and eighteen vertical columnsC. Seven horizontal rows and seven vertical columnsD. Eight horizontal rows and eight vertical columns |
| Answer» Correct Answer - B | |
| 49. |
Aluminium is diagonally related to (in periodic table)A. LiB. CC. BD. Be |
| Answer» Correct Answer - D | |
| 50. |
Which of the following species has the highest electron affinity?A. `F^(-)`B. `O`C. `O^(-)`D. `Na^(+)` |
| Answer» Correct Answer - B | |