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. |
Which of the following lanthanoids show `+2` oxidation state besides the characteristic oxidation state +3 of lanthanoids?A. `Ce`B. `Eu`C. HoD. None of these |
| Answer» Correct Answer - B | |
| 2. |
`XeO_(2)F_(2)` is obtained by partial hydrolysis ofA. `XeOF_(4)`B. `XeF_(6)`C. both (a) and (b)D. None of these |
| Answer» Correct Answer - C | |
| 3. |
What should be the correct IUPAC name for diethylbromomethane?A. 1-bromo-1,1-diethyl methaneB. 3-bromo pentaneC. 1-bromo-1-ethyl propaneD. 1-bromo pentane |
| Answer» Correct Answer - B | |
| 4. |
In the extraction of `Cu` the reaction takes place Bessemer converter is:A. `2Cu_(2)O+Cu_(2)S to 6Cu+SO_(2)`B. `2CuFeS_(2)+O_(2) to Cu_(2)S+FeS+SO_(2)`C. `2Cu_(2)S+3O_(2)to2Cu_(2)O+2SO_(2)`D. `2FeS+3O_(2)to2FeO+2SO_(2)`. |
| Answer» Correct Answer - A | |
| 5. |
Which of the following ligand has lowest `Delta_(0)` value?A. `CN^(-)`B. `CO`C. `F^(-)`D. `NH_(3)` |
| Answer» Correct Answer - C | |
| 6. |
At what temperature will most probable speed of the molcules of the second number of alkyne series be the same as that of `SO_(2)` at `527^(@)C`?A. `347^(@)C`B. `227^(@)C`C. `800^(@)C`D. `254^(@)C` |
| Answer» Correct Answer - B | |
| 7. |
What type of linkage is present in `S_(2)O_(3)^(2-)`?A. S-S linkageB. S-O linkageC. both (a) and (b)D. None of these |
| Answer» Correct Answer - C | |
| 8. |
What is the correct order of reactivity of alcohols in the following reaction ? `R-OH+HCIoverset(ZnCI_(2))rarrR-CI+H_(2)O`A. `1^(@) gt 2^(@) gt 3^(@)`B. `1^(@) lt 2^(@) gt 3^(@)`C. `3^(@) gt 2^(@) gt 1^(@)`D. `3^(@) gt 1^(@) gt 2^(@)`. |
| Answer» Correct Answer - C | |
| 9. |
An element of group 2 forms covalent oxide, which is amphoteric ini nature and dissolves in water to give an amphoteric hydroxide. Identify the element.A. BerylliumB. MagnesiumC. CalciumD. Barium |
| Answer» Correct Answer - A | |
| 10. |
The standard reduction potential for `Fe^(2+)//Fe and Sn^(2+)//Sn` electrodes are -0.44 and -0.14V respectively. For the givenn cell reaction, `Fe^(2+)+Sn to Fe+SN^(2+)`, the standard EMF isA. 0.42 VB. `-0.42V`C. `-0.30V`D. `-1.10V` |
| Answer» Correct Answer - C | |
| 11. |
A battery of emf E and internal resistance r is connected to a variable resistor R as shown in the figure. which one of the following is true? A. ptential difference across the terminals of the battery is maximum when R=rB. Powerr delivered to the resistor is maximum when R=rC. Current in the circuit is maximum when R=rD. Current in the circuit is maximum when `R gt gt r`. |
| Answer» Correct Answer - C | |
| 12. |
A wire of length l is bent in the form a circular coil of some turns. A current I flows through the coil. The coil is placed in a uniform magnetic field B. The maximum torqur on the coil can beA. `iBl^(2)`B. `4piiBl^(2)`C. `(il^(2)B)/(4pi)`D. zero |
| Answer» Correct Answer - C | |
| 13. |
Two spherical conductors `A_(1) and A_(2)` of radii `r_(1) and r_(2)` are placed concentrically in air. The two are connected by a copper wire as shown in the figure. Then, the equivalent capacitance of the system is A. `(4piepsi_(0)Kr_(1)r_(2))/(r_(2)-r_(1))`B. `4piepsi_(0)(r_(2)+r_(1))`C. `4piepsi_(0)r_(2)`D. `4piepsi_(0)r_(1)`. |
| Answer» Correct Answer - C | |
| 14. |
A light beam is travelling from region I to region IV (refer figure). The refractive index in region I,II,III and IV are `n_(0),(n_(0))/(2),(n_(0))/(6) and (n_(0))/(8)`, respectively. The angle of incidence `theta` for which the beam just misses entering region IV is A. `sin^(-1)((3)/(4))`B. `sin^(-1)((1)/(8))`C. `sin^(-1)((1)/(4))`D. `sin^(-1)((1)/(3))` |
| Answer» Correct Answer - B | |
| 15. |
A boy weighing 50kg eats bananas. The energy constant of banan is 100cal , if this energy is used to lift the body from ground, then the height through which his lifted isA. 8.57B. 10.57mC. 6.57 mD. 5.57 m |
| Answer» Correct Answer - A | |
| 16. |
Waves that cannot be polarised areA. sound wavesB. langitudinal waves on a stringC. transverse waves on a stringD. light waves |
| Answer» Correct Answer - D | |
| 17. |
A wire PQR is bent as shown in figure and is placed I a region of uniform magnetic field B. the length of PQ=QR=l. A curret l ampere flows through the wire as shown. The magnitude of the force on PQ and QR will be A. Bll,0B. 2Bll,0C. 0,BllD. 0,0 |
| Answer» Correct Answer - C | |
| 18. |
In case of molecules of an ideal gas, which of the following , average velocities cannot be zero?A. ` lt (overline(v)) gt`B. `lt overline(v)^(3)gt`C. `lt overline(v)^(4)gt`D. `ltoverline(v)^(5) gt` |
| Answer» Correct Answer - C | |
| 19. |
There are `10` sound sources each producing intensity I at a point independently. The are incoherent. Average intensity of sound at that point will be:A. `nl_(0)`B. `(l_(0))/(n)`C. `n^(2)l_(0)`D. none of these |
| Answer» Correct Answer - A | |
| 20. |
If the order of two vectors A and B is reversed in the cross product of two vectors, then resultant vectorA. changes only in directionB. changes in magnitudeC. magnitude and directionD. doesnot change both in magnitude and direction |
| Answer» Correct Answer - B | |
| 21. |
An iron rod of cross-section area `4cm^(2)` is placed with its length along a magnetic field of intensity 1200 S `m^(-1)`. The flux through the rod is `40xx10^(-4)Wb`. The permeability of the rod isA. `8.3xx10^(-3)WbA^(-1)m^(-1)`B. `8.3xx10^(-4)WbA^(-1)m^(-1)`C. `8.3xx10^(-5)WbA^(-1)m^(-1)`D. `8.3xx10^(-6)WbA^(-1)m^(-1)` |
| Answer» Correct Answer - A | |
| 22. |
Non-stoichiometric hydrides areA. hydrides of all d-block elementsB. deficients in hydrogenC. the hydrides having hydrogen atom in interstitial sitesD. both (b) and (c) |
| Answer» Correct Answer - D | |
| 23. |
If wave y = A cos `(omegat + kx)` is moving along x-axis The shape of pulse at t = 0 and t = 2 sA. are differentB. are sameC. may not be sameD. none of th above |
| Answer» Correct Answer - B | |
| 24. |
Soap helps in cleaning clothes, becauseA. it reduces the surface tension of solutionB. it gives strength to solutionC. it absorbs the dirtD. chemical of soaps change |
| Answer» Correct Answer - A | |
| 25. |
A compound microscope has an eye piece of focal length `10 cm` and an objective of focal length `4 cm`. Calculate the magnifcation, if an object is kept at a distance of `5 cm` from the objective so that final image is formed at the least distance vision `(20 cm)`A. 12B. 11C. 10D. 13 |
| Answer» Correct Answer - A | |
| 26. |
For a reaction at `25^(@)C`, enthalpy and entropy change are `-11.7xx10^(3)J" "mol^(-1) and -150"J "mol^(-1)K^(-1)` respectively. What is the Gibbs free energy?A. 15.05 kJB. 19.59 kJC. 2.55 kJD. 25.55 kJ |
| Answer» Correct Answer - B | |
| 27. |
The bond angle in `OF_(2)` out of `OF_(2),Cl_(2)O,Br_(2)O` is minimum. This is due toA. electrons are nearer to fluorine due to high electronegativity of F compared to Cl or BrB. long pair-lone pair repulsion bond angle decreasesC. both (a) and (b)D. none of these |
| Answer» Correct Answer - C | |
| 28. |
If n identical drops of mercury are combined to form a bigger drop then find the capacity of bigger drop, if capacity of each drop of mercury is C.A. `n^(1//3)C`B. `n^(2//3)C`C. `n^(1//4)C`D. `nC` |
| Answer» Correct Answer - A | |
| 29. |
The decomposition of hydrocarbon follows the equation `k=(4.5xx10^(11)s^(-1))e^(-28000K//T)` Calculate `E_(a)`.A. 232.79 kJ `mol^(-1)`B.C. 425.25 kJ `mol^(-1)`D. 300 kJ `mol^(-1)` |
| Answer» Correct Answer - A | |
| 30. |
A spherical ball contracts in volume by 0.01% when subjected to a normal uniform pressure of 100 atmospheres. Calculate the bulk modulus of the meterial.A. `10xx10^(12)`B. `100xx10^(12)`C. `1xx10^(12)`D. `2.0xx10^(11)` |
| Answer» Correct Answer - C | |
| 31. |
A particle of mass M and radius of gyration K is rotating with angular acceleration `alpha`. The torque acting on the particle isA. `(1)/(2)MK^(2)alpha`B. `MK^(2)alpha`C. `(MK^(2))/(alpha)`D. `(MK^(2)alpha^(2))/(4)` |
| Answer» Correct Answer - B | |