InterviewSolution
Saved Bookmarks
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. |
Which one of the following sets of ions represents the collection of isoelectronic species?A. `K^(+)Cl^(-),Mg^(2-),Sc^(3+)`B. `Na^(+),Ca^(2+),Sc^(3+),F^(-)`C. `K^(+),Ca^(2+),Sc^(3+),Cl^(-)`D. `Na^(+),Mg^(2+),Al^(3+),Cl` |
| Answer» Correct Answer - c | |
| 2. |
Which of the following sets of quantum numbers represents an impossible arrangement?A. `3,2,-2,+(1)/(2)`B. `4,0,0,+(1)/(2)`C. `3,2,-3+(1)/(2)`D. `5,3,0,+(1)/(2)` |
|
Answer» Correct Answer - c N/a |
|
| 3. |
In ground state of phoosphorous atom (Z=15) , the numbers occupied sub- shells and occupied orbitals are respectilty :A. 3,3B. 5,9C. 5,5D. 3,6 |
|
Answer» Correct Answer - b N/a |
|
| 4. |
which of the following is an impossible set of quantum number ?A. `n=3,l=2,m=0,s=+(1)/(2)`B. `n=3,l=2,m=-2,s=+(1)/(2)`C. `n=3,l=2,m=-3,s=+(1)/(2)`D. `n=3,l=2,m=-1,s=-(1)/(2)` |
|
Answer» Correct Answer - c N/a |
|
| 5. |
which of the following statement are correct about orbitals ?A. A large number of orbitals are possible in an atomB. Orbitals can be distguished by their size shape and orientationC. An orbital of smaller size means their is more chance of finding it near the nucleusD. shape and orientation means that there is more probability of finding the electrons along certain direction than along others |
|
Answer» Correct Answer - a,d, N/a |
|
| 6. |
The correct option regarding size of orbitals is :A. `2pgt3pgt4pgt5p`B. `2p=3plt4p=5p`C. `2plt3plt4plt5p`D. `2p=3p=4p=5p` |
|
Answer» Correct Answer - c N/a |
|
| 7. |
Which of the following set of quantum numbers is not viliad ?A. `n=3,l=2,m=2,s=+(1)/(2)`B. `n=2,l=0,m=0,s=-(1)/(2)`C. `n=4,l=2,m=-1,s=+(1)/(2)`D. `n=4,l=3,m=4,s=-(1)/(2)` |
|
Answer» Correct Answer - d N/a |
|
| 8. |
Number of nodal plane (S) present in s,`p_(x),P_(y) p_(z)` are respecticvely:A. 0,1,1,1B. 0,2,1,1C. 0,2,2,2D. 0,0,0,0 |
|
Answer» Correct Answer - a N/a |
|
| 9. |
the ground state valence shell electrons configuration of nitrogen atom can be represnted as :A. B. C. D. |
|
Answer» Correct Answer - a,d, N/a |
|
| 10. |
which fo the following orbitals have at least one common nodal plane ?A. `p_(z)and d_(xz)`B. `d_(x^(2)-y^(2))and s`C. `d_(x^(2)-y^(2))and d_(xy)`D. `d_(z^(2))and p_(z)` |
|
Answer» Correct Answer - a N/a |
|
| 11. |
Principal azimuthal , and magnetic quantum numbers are respetively related toA. size ,shape and orientationB. shape ,size and orientationC. Size orientation and shapeD. none of the above |
|
Answer» Correct Answer - a N/a |
|
| 12. |
How many orbitls contin one or more electrons in an isolated ground state iron stom (Z=26)?A. 13B. 14C. 15D. 16 |
|
Answer» Correct Answer - c N/a |
|
| 13. |
Number of nodal planes in `3d_(xy)` orbital is same as that in :A. `3p_(y)` orbitalB. `4d_(xy)` orbitalC. `3d_(x^(2)-y^(2))` orbitalD. `3d_(yz)` orbital |
|
Answer» Correct Answer - b,c,d, N/a |
|
| 14. |
Quantum number is address of an electron in amy atom . They are of four types : (A) Principal quantum number (n) (b) Azimuthal quantum number (l) (c ) Magnetic quantum number (m) (d) spin quantum number (s) prinicial quantum tells us the number of shells . Azimuthal quantum number tells is the name o f sub - shell ./ FOr s,p,f:l = 0,1,2,3 respectively .Magnetic quantum number represents the orientation of sub shell and spn wuantum number repesents the quantum spin states . which opition is not correct accoding to quantam number ?A. `n=2,l=0,m=0,s=-(1)/(2)`B. `n=1,l=1,m=0,s=-(1)/(2)`C. `n=2,l=1,m=0,s=+(1)/(2)`D. `n=3,l=2,m=0,s=-(1)/(2)` |
|
Answer» Correct Answer - b N/a |
|
| 15. |
which of the following statements regarding subdhell filling for s neutrsl stom is /are Correct (P) Electrons are assigned to the 4s subshell before they are assogned to the 3d subshell (Q) electrons are assigned to the 4f subshell they are assigned to the 6s subshell (R) elecrons are assigned to the 4d subshell before they are assigned to the 5p subshellA. P onlyB. Q onlyC. P and RD. P,Q and R |
|
Answer» Correct Answer - c N/a |
|
| 16. |
the energies of the 3s ,3p 3p and 3d orbitals in a muti -electron atom increase in that order ,to which facter (s) can this order eb attributed ? (P) the relative pentrations of these orbitals near the nucleus . (Q) the relative average distance of the electromn from the nucleus.A. P onlyB. Q onlyC. Both pand QD. Neither p nor Q |
|
Answer» Correct Answer - c N/a |
|
| 17. |
whcih of the following does NOT repesent the arrangement of electrons in the p Subshell in the ground state of any gas -phase phase atom ?A. B. C. D. |
|
Answer» Correct Answer - a N/a |
|
| 18. |
Statement : The possible number of electrons in a subshell is (4l + 2)`. Explanation : The possible number of orientaions of a subshell are (2 l+ 1).A. sattement -1 si true statement -2 is ture statement =-2 si correct explantion for statement -1B. statement -1 si true statement -2 si true statement -2 is not a correct explation for statement -1C. statement -1 si true statemention -1D. statement -1 and statement -2 both are false . |
|
Answer» Correct Answer - a N/a |
|
| 19. |
which of the following quantum will have higher numercal value among rhe other three corresponsing quantum numbers for a given subshell?A. Spin quantum numberB. Azimuthal quantum numberC. Magnetic quantum numberD. Principal quntum number |
| Answer» Correct Answer - d | |
| 20. |
which orbital has most radial modes ?A. 4sB. 4pC. 4dD. 4f |
|
Answer» Correct Answer - a N/a |
|
| 21. |
H -atom have infinite shells , write total number fo shells which does not contain f- subshell . |
|
Answer» Correct Answer - 3 n=1 ,n=2,n=3 does not contains f. |
|
| 22. |
the energy of an electron in hydrogen atom is determined solely by its:A. principal quantum numberB. azimuthal quantum numberC. (n+1) valueD. none of these |
|
Answer» Correct Answer - a N/a |
|
| 23. |
Read carefully four statements: (P) S- subshell consists of one orbital (Q) p- orbital consists od there subshell (R ) d- subshelll can accommodate maximum of ten electrons (S ) H-orbital can accommodate maximum of two electrons Choose the corect statements :A. P,Q,R and SB. P and RC. Q and SD. P,R and S |
|
Answer» Correct Answer - d N/a |
|
| 24. |
which of the following sets of quantum numbers n, l,`""_(1)`,`m_(S)` correspond to a valence electron in a neutral atom of arsenic (As) ?A. `3,0,0,+(1)/(2)`B. `3,2,1,-(1)/(2)`C. `4,0,0,+(1)/(2)`D. `4,2,1,-(1)/(2)` |
|
Answer» Correct Answer - c N/a |
|
| 25. |
which set of quantum numbers (n,l,`m_(1)`,`m_(2)` ) is permissible fopr an electron in an atom?A. `1,0,0,-(1)/(2)`B. `1,1,0,+(1)/(2)`C. `2,1,2,+(1)/(2)`D. `3,2,-2,0` |
| Answer» Correct Answer - a | |
| 26. |
A meterial Safety Date sheet (MSDS) provides what types (S) of information anout a chemical ? (P) First aid measures (Q) Handing and storage tipsA. P onlyB. Q onlyC. Both pand QD. Neither P nor Q |
| Answer» Correct Answer - c | |
| 27. |
Gaseous atoms of which of these elements contain one or more unpiared electrons ? `Ge (Z=32),As (Z=33),Se (Z=34)`A. As onlyB. Ge and As onlyC. Ge and Se onlyD. Ge ,As and Se |
|
Answer» Correct Answer - d N/a |
|
| 28. |
An ionic compound that attracts atmospheric water so strongly that a hydrate is formed is said to be :A. diluteB. hygroscopicC. immisibleD. Miscible |
| Answer» Correct Answer - b | |
| 29. |
which ion not isooelectronic with Ar?A. `S^(2-)`B. `K^(+)`C. `SC^(2+)`D. `Ti^(4+)` |
|
Answer» Correct Answer - c `Sc^(2+)to 19e^(-) ` `Ar to 18e^(-)` |
|
| 30. |
A monoatomic ion that has 18 electrons and `+2` charge:A. Has 16 ptotonsB. Has the symbol `Ar^(2+)`C. has 18 neutroonsD. is isoeoleecttronnic with Ar |
|
Answer» Correct Answer - d No .of p=18+2=20 ar has `18 e^(-)` |
|
| 31. |
which pair of symbols represent nucler with the same number of neutrons ?A. `^(56)COand ^(58)Co`B. `^(57)Mnand ^(57)Fe`C. `^(57)Feand ^(58) Ni`D. `^(57)Coand ^(58) Ni` |
|
Answer» Correct Answer - d (57-27)=(58-28) |
|
| 32. |
what is the total number of valence eleectrrons in the chlorate ion , `ClO_(3)^(-)`?A. 24B. 26C. 28D. 32 |
|
Answer» Correct Answer - b `7+6xx3+1=26e^(-)` |
|
| 33. |
The total spin resulting from a `d^7` configuration is :A. 1B. 2C. `(5)/(2)`D. `(3)/(2)` |
|
Answer» Correct Answer - d `3xx(+(1)/(2))=+(3)/(2)` |
|
| 34. |
the on `^(55)Mn^(2+)` contains which comnination of protons neutrous and eleectrons? `{:(,"protons","neutrons","Electrons"),(A,25,30,23),(B,25,55,23),(C,27,30,25),(D,30,25,28):}`A. AB. BC. CD. D |
| Answer» Correct Answer - a | |
| 35. |
which species carry the maximum charge?A. protonB. `beta` -particleC. `alpha` -particleD. Hydronium ion |
| Answer» Correct Answer - c | |
| 36. |
Which of the follwong nuclear reactiosn will generate an isotope?A. neutron particle emissionB. Positron emissionC. `alpha` -particle emissionD. `beta` -particle emission |
|
Answer» Correct Answer - a `z^(X^(A))to z^(X^(A-1+(1)/(0)n))` |
|
| 37. |
Which of the following species are isotopic as well as isoelertrnic ?A. `""^(40)Ca^(+2),^(40)Ar`B. `""^(39)K^(+2),^(40)K^(+)`C. `""^(24)Mg^(+2),^(425)Mg^(+)`D. `""^(23)Na^(+2),^(24)Na^(+)` |
| Answer» Correct Answer - b | |
| 38. |
A certain positive ion `A^(+2)`has 22 mass number of most abundant isotope of A?A. 42B. 38C. 40D. None of these |
| Answer» Correct Answer - c | |
| 39. |
Two particles (X) and(Y) have the comostion as shown in the table : `{:("particle","numberof electons","number of neutrous ","Number of protons"),((X),18,16,16),((Y),18,18,17):}` the paricle (x) and(Y) are:A. Isotopes of each otherB. isobars of each otherC. isotones of ech otherD. Isoelectronic ions |
| Answer» Correct Answer - d | |
| 40. |
in species `X^(2+)` , the mass number is 20 and number of neutrons are 10 , then calculate the number of electrons in species `X^(2+)`. |
|
Answer» Correct Answer - 8 No. of protins = 20-10=10, No.of `e^(-)` =8 |
|
| 41. |
Which of the following is electronic configuration of `Cu^(2+) (Z = 29)` ?A. `[Ar]4s^(1)3d^(8)`B. `[Ar]4s^(1)3d^(10)4p^(1)`C. `[Ar]4s^(1)3d^(10)`D. `[Ar]3d^(9)` |
|
Answer» Correct Answer - d N/a |
|
| 42. |
Which of the following species has some number of electrons as `F^(Ө)`?A. `C^(-4)`B. `Na^(+)`C. `NH_(2)^(-)`D. All of these |
| Answer» Correct Answer - d | |
| 43. |
The ratio of the e/m values of a proton and an `alpha`-particle is:A. `2:1`B. `1:1`C. `1:2`D. `1:4` |
| Answer» Correct Answer - a | |
| 44. |
Which of the following pairs have identical values of e/m?A. A proton and a neutronB. A proton and deuterium,C. Deiterium and `alpha`-particleD. An electron and `gamma`-rays |
| Answer» Correct Answer - c | |
| 45. |
The ration of the `e//m` (specific charge) values of an electron and an `alpha-"particle"` isA. `2:1`B. `1:1`C. `1:2`D. `1:1` |
| Answer» Correct Answer - d | |
| 46. |
`N_(2) ` is isoelectronic with :A. COB. `NO^(+)`C. `C_(2) H_(2)`D. `CH_(4)` |
|
Answer» Correct Answer - a,b `c_(2)H_(2) "has " 14e^(-)` as that of `N_(2)` but has difference number of atoms (4) , Hence , not isoelectrons |
|
| 47. |
identify the element which are isotones of of `._(8)O^(16)`:A. `._(7)N^(14)`B. `._(7)N^(15)`C. `._(6)C^(14)`D. `._(9)N^(17)` |
|
Answer» Correct Answer - b,c,d, Isotones have same number of neutrons . |
|
| 48. |
Ozone is isoeletronic with :A. NOFB. `NO_(2)^(-)`C. `NOCl`D. `N_(3)^(-)` |
|
Answer» Correct Answer - a,b,c, Since mass number is 37, optons (c ) ,(d) arae not possible Now , according to option (A) and (b) no. of neutrons `=20 .No "of " e^(-) =(20)/(1.111) = 18` Hence spcies is `""_(17_^(37) cl^(-)` |
|
| 49. |
what is the maximum number of electrons that can occupy n=3 energy level ?A. 6B. 8C. 10D. 18 |
|
Answer» Correct Answer - d 3s,3p,3d =1+3+5=9 orbitals |
|
| 50. |
Species X with mass number 37 contains 11.1 % more neutrons as compared to electrons , then what is the incorrect repesentation of element x?A. `underset(17)overset(37)""Cl^(-)`B. `underset(17)overset(37)""Cl`C. `underset(17)overset(35)""Cl^(-)`D. `underset(17)overset(35)""Cl` |
|
Answer» Correct Answer - b,c,d, Since mass number is 37, optons (c ) ,(d) arae not possible Now , according to option (A) and (b) no. of neutrons `=20 .No "of " e^(-) =(20)/(1.111) = 18` Hence spcies is `""_(17_^(37) cl^(-)` |
|