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.
| 351. |
Which of the following statement(s) is/are correct?A. The second ionization energy of sulphur is greater than that of chlorineB. The third ionization energy of phosphorus is greater than that of aluminiumC. The first ionization energy of aluminium is nearly the same as that of galliumD. The second ionization energy of boron is greater than that of carbon. |
| Answer» Correct Answer - A::B::C::D | |
| 352. |
Three elements X , Y and Z have atomic numbers 19 , 37 and 55 respectively . Then the correct statements (s) is / areA. Their ionisation potential would increase with the increasing atomic numberB. Y would have an ionisation potential in between those of X and ZC. Z would have the highest ionisation potentialD. Y would have the highest ionisation potential |
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Answer» Correct Answer - B `X rarr K, Y rarr Rb, Z rarr Cs` |
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| 353. |
The correct order of the first ionisation potentials isA. `Ne gt Cl gt P gt S gt Al gt Mg `B. `Ne gt Cl gt P gt S gt Mg gt Al `C. `Ne gt Cl gt S = P gt Mg gt Al `D. `Ne gt Cl lt S gt P lt Al gt Mg` |
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Answer» Correct Answer - B |
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| 354. |
Ionization energy of an element is:A. equal in magnitude but opposite in sign to the electron gain enthalpy of the cation of the elementB. same as electrin affinity of the elementC. energy required to remove one valence electron from an isolated gaseous atom in its ground stateD. equal in magnitude but opposite in sign to the electron gain enthalpy of the anion of the element |
| Answer» Correct Answer - A::C | |
| 355. |
Which of the following is/are true order (s)?A. `{:(B^(+) lt B lt B^(-),"Size"):}`B. `{:(I lt Br lt CI lt F,"Electron affinity"):}`C. `{:(O^(2-) lt O^(-) lt O^(+), Z_("effective")):}`D. `{:(Na lt AI lt Mg lt SI, "Ionisation potential"):}` |
| Answer» Correct Answer - A::C::D | |
| 356. |
Three elements X , Y and Z have atomic numbers 19 , 37 and 55 respectively . Then the correct statements (s) is / areA. Their ionisation potential would increase with increasing atomic numbersB. Y would have an ionisation potential between those X and YC. Y would have the highest ionisation potentialD. Z would have the highest ionisation potential |
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Answer» Correct Answer - B |
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| 357. |
The atomic number of element Unq is:A. 102B. 103C. 104D. 105 |
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Answer» Correct Answer - C |
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| 358. |
Which of the following is not an actinoid?A. Curium `(Z = 96)`B. Californium `(Z = 98)`C. Uranium `(Z = 92)`D. Terbium `(Z = 65)` |
| Answer» Correct Answer - D | |
| 359. |
Which of the following order(s) is/are correct?A. `O^(2-) lt F^(-) lt Na^(+) lt Mg^(2+)` increasing `Z_("effective")`B. `Mg^(2+) lt Na^(+) lt O^(2-) lt F^(-)` increasing sizeC. `O^(2-) lt F^(-) lt Na^(+) lt Mg^(2+)` increasing ionisation energyD. `O^(2-) lt F^(-) lt Na^(+) lt Mg^(2+)` increasing electron affinity |
| Answer» Correct Answer - A::C::D | |
| 360. |
Which of the following pairs is chemically similar ?A. Zr-HfB. Cu-AgC. Fe-AuD. Hf-La |
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Answer» Correct Answer - A |
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| 361. |
The statement that is not correct for periodic classification of elements isA. The properties of elements are periodic function of their atomic numbersB. Non metallic elements are less in number than metallic elementsC. For transition elements, the 3d-orbitals are filled with electrons after 3p-orbitals and before 4s-orbitalsD. The first ionisation enthalpies of elements generally increase with increase in atomic number as we go along a period.. |
| Answer» Correct Answer - C | |
| 362. |
The basis for the classification of elements in the modern periodic table isA. Electronic configurationB. Atomic weightC. Atomic volumeD. Equivalent weight |
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Answer» Correct Answer - A |
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| 363. |
According to the Periodic Law of elements, the Variation in properties of elements is related to their ?A. Nuclear massesB. Atomic numbersC. Nuclear neutron-proton number ratioD. Atomic masses |
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Answer» Correct Answer - B [Atomic no.] |
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| 364. |
The statement which is not correct for periodic classification of elements isA)The properties of elements are a periodic function of their atomic numbersB)Non-metallic elements are less in number than metallic elementsC)The first ionisation energies of elements along a period of vary in a regular manner with increase in atomic numberD)Generally electronegativity and electron affinity increase across the periodA. The properties of elements are a periodic function of their atomic numbersB. Non-metallic elements are less in number than metallic elementsC. The first ionisation energies of elements along a period of vary in a regular manner with increase in atomic numberD. Generally electronegativity and electron affinity increase across the period |
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Answer» Correct Answer - C |
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| 365. |
Select the incorrect statement(s).A. `IE(I)` of nitrogen atom is less than `IE(I)` of oxygen atom.B. Electron affinity of oxygen is less than selenium atom.C. Electronegativity on Pauling scale is 2.8 times greater than electronegativity on Muliken scale.D. The `Cr^(6+)` is smaller than `Cr^(3+)` |
| Answer» Correct Answer - A::C | |
| 366. |
Which of the following is the atomic number of a metal?A. 35B. 34C. 36D. 38 |
| Answer» Correct Answer - D | |
| 367. |
The properties which are common to both groups 1 and 17 elements in the periodic table are:A. metallic character increases down the groupsB. reactivity decreases from top to bottom in groupsC. atomic radii increases as the atomic number increasesD. electronegativity decreases on moving down a group |
| Answer» Correct Answer - A::C::D | |
| 368. |
Condition suitable for high solubility of ionic compound in solvent should be:A. High lattice energy and low hydration energyB. Low lattice energy and high hydration energyC. Lattice energy must be equal to hydration energyD. Solubility is independent of lattice or hydration energy |
| Answer» Correct Answer - B | |
| 369. |
The set representing the correct order of ionic radius is :A. `Na^(+) gt Mg^(2+) gt Al^(3+) gt Be^(2+) gt Li^(+)`B. `Na^(+) gt Li^(+) gt Mg^(2+) gt Al^(3+) gt Be^(2+)`C. `Na^(+) gt Mg^(2+) gt Al^(3+) gt Li^(+) gt Be^(2+)`D. `Na^(+) gt Mg^(2+) gt Li^(+) gt Be^(2+) gt Al^(3+)` |
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Answer» Correct Answer - C |
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| 370. |
In which element shielding effect is not possible ?A. HB. BeC. BD. N |
| Answer» Correct Answer - A | |
| 371. |
Which of the following options is correct regarding periodic properties?A. Ionic radii order `CI^(-) gt H^(-)`B. Electropositivity order of elements `Li gt Na gt K gt Rb`C. `Z_(eff)` order `Li lt Na lt K lt Rb`D. Hydration energy order `Fe^(+3) gt Fe^(+2) gt Fe^(+4)` |
| Answer» Correct Answer - D | |
| 372. |
The set representing the correct order of ionic radius isA. `Na^(+) gt Li^(+) gt Mg^(2+) gt Be^(2+)`B. `Li^(+) gt Na^(+) gt Mg^(2+) gt Be^(2+)`C. `Mg^(2+) gt Be^(2+) gt Li^(+) gt Na^(+)`D. `Li^(+) gt Be^(2+) gt Na^(+) gt Mg^(2+)` |
| Answer» Correct Answer - A | |
| 373. |
Which of the following statements is/are correct?A. The second ionization energy of oxygen is greater than that of fluorineB. The third ionization energy of phosphorous is greater than that of aluminium.C. The first ionization energy of aluminium is slightly less than of gallium.D. The second ionization energy of boron is greater than that of carbon. |
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Answer» Correct Answer - A::C::D |
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| 374. |
Which one of the following ions has the highest value of ionic radius?A. `O^(2-)`B. `B^(3+)`C. `Li^(+)`D. `F^(-)` |
| Answer» Correct Answer - A | |
| 375. |
Which one of the following statements is/are incorrect :a)Atomic radius of Be is larger than that of Al.b)`Delta_(eg)H` of Se is -195 kJ/mol where as that of O is -141 KJ/mol.c)First ionization energy of N is greater than that of Ned)CO, NO and `N_(2)O` are neutral oxides.A. Atomic radius of Be is larger than that of Al.B. `Delta_(eg)H` of Se is -195 kJ/mol where as that of O is -141 KJ/mol.C. First ionization energy of N is greater than that of NeD. CO, NO and `N_(2)O` are neutral oxides. |
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Answer» Correct Answer - A::C |
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| 376. |
Find the number of p-block elements from the following atomic numbers given below. `{:(83,79,42,64,37,54,34):}` |
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Answer» Correct Answer - `0003` `83, 54, 34` |
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| 377. |
The electronegativity of Be is same as that ofA. AlB. MgC. NaD. Li |
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Answer» Correct Answer - A |
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| 378. |
Statement-1: Third ionisation energy of phosphorous is larger than sulphur. Statement-2: There is a larger amount of stability associated with filled s-and p-sub-shells (a noble gas electron configuration) which corresponds to having eight electrons in the valence shell of an atom or ion.A. Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-9B. Statement-1 is True, Statement-2 is True, Statement-2 is NOT a correct explanation for Statement-9C. Statement-1 is True, Statement-2 is FalseD. Statement-1 is False, Statement-2 is True |
| Answer» Correct Answer - D | |
| 379. |
Statement-1: Second electron gain enthalpy of halogens is always positive. Statement-2: Fluorine has most negative electron gain enthalpy.A. Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-8B. Statement-1 is True, Statement-2 is True, Statement-2 is NOT a correct explanation for Statement-8C. Statement-1 is True, Statement-2 is FalseD. Statement-1 is False, Statement-2 is True |
| Answer» Correct Answer - C | |
| 380. |
The lattice enthalpy of solid `NaCI` is `772 kJ mol^(-1)` and enthalpy of solution is `2kJ mol^(-1)`. If the hydration enthalpy of `Na^(+) &CI^(-)` ions are in the ratio of 3: 25, what is the magnitude of enthalpy of hydration (in kJ) of chloride ion ? |
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Answer» Correct Answer - [350] [Lattice enthalpy `= 772 Kj//Mol` `((DeltaH.E)_(Na^(+)))/((DeltaH.E)_(CI^(-))) = (30)/(25) = (6)/(5),underset((x))((DeltaHE)_(Na^(+))) =(6)/(5)underset((y))((DeltaHE)_(CI^(-)))` `x = (6)/(5)y` `(DeltaH)_(solution")=` Lattice enthalpy `+H.E.` of `na^(+) +H.E.` of `CI^(-)` `2 = 272 +(y) +(6)/(5)(y)` `- 770 = (11)/(5) y, y = (770 xx 5)/(11) = 350 KJ]` |
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| 381. |
Which of the following is not correct order regarding the property indicated?A. `Sc^(3+) lt Cr^(3+) lt Fe^(3+) lt Mn^(3+)- " ionic " " radius "`B. `Sc lt Ti lt Mn lt Cr` - number of unpaired electronsC. `Mn^(2+) gt Fe^(2+) gt Co^(2+) gt Ni^(2+)` - spin only magnetic momentsD. `BeO lt MgO lt CaO lt BaO` - basic nature |
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Answer» Correct Answer - A |
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| 382. |
The energy released when an electron is added to a neutral gaseous atom would be highest if the element belongs toA. VII A groupB. V A groupC. VI A groupD. II A group |
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Answer» Correct Answer - A |
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| 383. |
The element having electron affinity isA. FluorineB. NitrogenC. ChlorineD. Oxygen |
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Answer» Correct Answer - C |
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| 384. |
The most abundant noble gas in the atmosphere isA. `He`B. `Ne`C. `Ar`D. `Rn` |
| Answer» Correct Answer - C | |
| 385. |
The electronegativity of the following elements increases in the orderA. `C, N, Si, P`B. `N, Si, C, P`C. `Si, P, C, N`D. `P, Si, N, C` |
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Answer» Correct Answer - C |
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| 386. |
Which of the following transitions involves maximum amount of energy?A. `M^(-)(g) rarr M(g)`B. `M(g) rarr M^(+)(g)`C. `M^(+)(g) rarrM^(2+)(g)`D. `M^(2+)(g) rarr M^(3+)(g)` |
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Answer» Correct Answer - D |
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| 387. |
Select the correct statement.A. More active metals are on the left side of the periodic tableB. Less active metals are on the left side of the periodic tableC. Reducing power of alkali metals (g) decreases moving down the groupD. Metallic character decreases down the group |
| Answer» Correct Answer - A | |
| 388. |
Which of the following sequence regarding the first ionisation potential of coinage metal is correct?A. `Cu gt Ag gt Au`B. `Cu lt Ag lt Au`C. `Cu gt Ag lt Au`D. `Ag gt Cu gt Au` |
| Answer» Correct Answer - C | |
| 389. |
The ionic size of `Cl^(-)` is greater than that of `K^(+)` ion, though they are isoelectronic. Explain. |
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Answer» Nuclear forces of attraction on valence electrons are higher in `K^(+)` ion than in `Cl^(-)` This in due to the greater nuclear charge of `K^(+)` ion. So, the ionic size of `Cl^(-)` ino is greater than that of `K^(+)` ion. |
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| 390. |
Arrange N,O and S in order of increasing electron affinity.A. `S lt O lt N`B. `N lt S lt O`C. `N lt O lt S`D. `O lt N lt S` |
| Answer» Correct Answer - C | |
| 391. |
Atoms of metals have only a few electrons in their valence shells while atoms of non-metals generally have more electrons in their valence shells. Metallic character is closely related to atomic radius and ionization enthalpy. Metallic character increases from top to bottom in a group and decreases from left to right in a period. Metallic character is inversely related to electronegativity. Which of the following groups contains metals, non-metals and metalloids-A. Group 1B. Group 17C. Group 14D. Group 2 |
| Answer» Correct Answer - C | |
| 392. |
Statement-1: The atomic radii of the elements of the oxygen family are smaller than the atomic radii of the corresponding elements of the nitrogen family. Statement-2: The members of the oxygen family are more electronegative and thus have lower values of nuclear charge than those of the nitrogen family.A. Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-14B. Statement-1 is True, Statement-2 is True, Statement-2 is NOT a correct explanation for Statement-14C. Statement-1 is True, Statement-2 is FalseD. Statement-1 is False, Statement-2 is True |
| Answer» Correct Answer - C | |
| 393. |
In the isoelectronic species the ionic radii of `N^(3-), O^(2-), F^(-)` are respectively given byA. `1.36, 1.40, 1.71`B. `1.36,1.71,1.40`C. `1.71,1.40,1.36`D. `1.71,1.36,1.40` |
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Answer» Correct Answer - C |
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| 394. |
Which of the following is general is general electron configuration of 4d series?A. `4s^("1 to 2") 3d^("1 to 10")`B. `4s^("1 to 2") 4d^("1 to 10")`C. `5s^("1 to 2") 5d^("1 to 10")`D. `5s^("1 to 2") 4d^("1 to 10")` |
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Answer» Correct Answer - D |
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| 395. |
Which of the following statements is incorrect?A. `DeltaH_(eg)` value of noble gases are negativeB. Si is diagonally related to BC. The element which have higher `-DeltaH_(eg)` act as strong oxidising agent.D. `H^(+)` and `Cs^(+)` are the smallest and largest cation in periodic table respectively |
| Answer» Correct Answer - A | |
| 396. |
Atoms of metals have only a few electrons in their valence shells while atoms of non-metals generally have more electrons in their valence shells. Metallic character is closely related to atomic radius and ionization enthalpy. Metallic character increases from top to bottom in a group and decreases from left to right in a period. Metallic character is inversely related to electronegativity. Non-metals belong to -A. s-block elementsB. p-block elementsC. d-block elementsD. f-block elements |
| Answer» Correct Answer - B | |
| 397. |
In a given transition series the elements differ generally in the number of electrons ofA. pB. dC. p, d & fD. p & d |
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Answer» Correct Answer - B |
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| 398. |
The value of 1 eV/ atom isA. 23.06 kcal /moleB. 96.45 kJ/moleC. `1.602 10^(-19)` Joules/atomD. All of these |
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Answer» Correct Answer - D |
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| 399. |
Transition elements are placed in the periodic table between the groupA. IA and IIAB. IIA and IIIAC. IIIA and IVAD. VII and zero |
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Answer» Correct Answer - B |
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| 400. |
The element with highest ionisation potential isA. `Na`B. `Ar`C. `Cl`D. `P` |
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Answer» Correct Answer - B |
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