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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.
| 701. |
At `27^@C` two moles of an ideal monatomic gas occupy a volume V. The gas expands adiabatically to a volume `2V`. Calculate (a) final temperature of the gas (b) change in its internal energy and (c) the work done by the gas during the process. [ `R=8.31J//mol-K`]A. `(a)195K" "(b)2.7kJ`B. `(a)189K" "(b)2.7kJ`C. `(a)195K" "(b)-2.7kJ`D. `(a)189K" "(b)-2.7kJ` |
| Answer» Correct Answer - D | |
| 702. |
If the reading of the ideal voltmeter shown in the circuit is `2V` the internal resistance of the two identical cells is A. `1Omega`B. `0.5Omega`C. `1.5Omega`D. `2Omega` |
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Answer» Correct Answer - B |
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| 703. |
In the following squence of reactions `"Toluene" overset(KMnO_(4))(to)Aoverset(SoCl_(2))(to)Boverset(H_(2)//Pd)underset(BaSo_(4))(to),"C"" the product C is"`A. `C_(6)H_(5)CH_(3)`B. `C_(6)H_(5)CH_(2)OH`C. `C_(6)H_(5)CHO`D. `C_(6)H_(5)COOH` |
| Answer» Correct Answer - C | |
| 704. |
Which can give both carbylamine test and cerric ammonium nitrate test?A. Asn-GinB. Lys-GinC. Asp-LysD. Lys-Ser |
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Answer» Correct Answer - D |
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| 705. |
A charge particle `q` is released at a distance `R_(@)` from the infinite long wire of linear charge density `lambda`. Then velocity will be proportional to (At distance `R` from the wire) A. `R^(3)`B. `e^(R//R_(0))`C. `R^(2)`D. `[n((R)/(R_(0)))]^(-1//2` |
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Answer» Correct Answer - D |
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| 706. |
Two perpendicular infinite wires are carrying current `i` as shown in the figure. The magnetic field at point `P` is : A. `(mu_(0)1)/(pid)`B. `(mu_(0)1)/(2pid)`C. `(mu_(0)1)/(2pid)`D. Zero |
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Answer» Correct Answer - D |
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| 707. |
`A_(1)` and `A_(2)` are two vectors such that `|A_(1)| = 3 , |A_(2)| = 5` and `|A_(1)+A_(2)| = 5` the value of `(2A_(1)+3A_(2)).(2A_(1)-2A_(2))` isA. `(237)/(2)`B. `-123`C. `(-337)/(2)`D. `(337)/(2)` |
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Answer» Correct Answer - B |
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| 708. |
In a common emitter amplifier circuit using an n-p-n transistor, the phase difference between the input and the output voltages will be:-A. `180^(@)`B. `45^(@)`C. `90^(@)`D. `135^(@)` |
| Answer» Correct Answer - A | |
| 709. |
A particle is executing simple harmonic motion with a time period `T`. At time `t=0,` it is at its position of equilibium. The kinetice energy -time graph of the particle will look likeA. B. C. D. |
| Answer» Correct Answer - A | |
| 710. |
For a common emiter configuration if `a` and `beta` have their usualy meaning , the incorrrect relationship between `a and beta` is :A. `alpha = (beta)/(1-beta)`B. `alpha = (beta)/(1+beta)`C. `alpha = (beta^(2))/(1+beta^(2))`D. `(1)/(alpha)=(1)/(beta)+1` |
| Answer» Correct Answer - A::C | |
| 711. |
Synthesis of each molecule of glucose in photosynthesis involves :A. 10 molecules of ATPB. 8 molecules of ATPC. 6 molecules of ATPD. 18 molecules of ATP |
| Answer» Correct Answer - D | |
| 712. |
`Aoverset(K_(1))toBoverset(K_(2))toC` if all the reaction are `1^(st)` order and `(d[B])/(dt)=0`. Determine [B].A. `(K_(1)+K_(2))[A]`B. `(K_(1)-K_(2))[A]`C. `(K_(1)xxK_(2))[A]`D. `(K_(1))/(K_(2))xx[A]` |
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Answer» Correct Answer - D |
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| 713. |
A galavanometer, whose resistance is 50 ohm has 25 divisions in it. When a current of `4xx10^(-4)` A passes through it,its needle (pointer) deflects by one division. To use this galvanometer as a volmeter of range `2.5V`, it is should be connected to a resistance of :A. 250 ohmB. 200 ohmC. 6200 ohmD. 6250 ohm |
| Answer» Correct Answer - A | |
| 714. |
A particle of mass `20 g` is released with an initial velocity `5m//s` along the curve from the point A, as shown in the figure. The point A is at height h from point B. The particle slides along the frictionless surface. When the particle reaches point B, its angular momentum about O will be : (Take `g=10m//s^2`). A. `2kg-m^2//s`B. `8kg-m^2//s`C. `6kg-m^2//s`D. `3kg-m^2//s` |
| Answer» Correct Answer - A | |
| 715. |
In a Frank-Hertz experiment,an electron of energy `5.6eV` passes through mercury vapour and emerges with an energy `0.7eV`. The minimum wavelength of photons emitted by mercury atoms is close to :A. 1700 nmB. 2020 nmC. 220 nmD. 250 nm |
| Answer» Correct Answer - A | |
| 716. |
If A is a non singular square matrix where `B=A^T and A+B^2=I` such that `A^3+I=kA` then find the value of k. |
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Answer» `B=A^T` `|A|!=0` `A^3+I=A*A A+I` `=A*(B^T)^2+I` `=A*(B^2)^T+I` `=A*(I^T-A^T)+I` `=A*(I-A^T)+I` `=A_I-A A^T+I` `=A*I-I+I` `=AI` `=A` `A^3+I=A`. |
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| 717. |
In an experiment for determination of refractive index of glass of a prism by `i-delta`, plot it was found thata ray incident at angle `35^circ`, suffers a deviation of `40^circ` and that it emerges at angle `79^circ`. In that case which of the following is closest to the maximum possible value of the refractive index?A. 1.6B. 1.7C. 1.8D. 1.5 |
| Answer» Correct Answer - D | |
| 718. |
`CH_(3)Coverset(OH)overset(|)(CH)-CH_(2)-CH_(2)-NH_(2)underset("Triethylamine")overset("Ethylformate")to` product The major product of the given reaction is:A. `CH_(3)-CH=CH-CH_(2)-NH_(2)`B. `CH_(3)-underset(OH)underset(|)(CH)-CH=CH_(2)`C. D. `CH_(3)-underset(OH)underset(|)(CH)-CH_(2)-CH_(2)-NH-overset(O)overset(||)(C)-H` |
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Answer» Correct Answer - D |
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| 719. |
A solution of `XY` (`100%` ionised) has osmotic pressure equal to four times the osmotic pressure of `0.01 M BaCl_(2)` (`100%` ionised). Find the molarity of `XY`A. `6xx10^(-2)M`B. `3xx10^(-2)M`C. `4xx10^(-2)M`D. `12xx10^(-2)M` |
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Answer» Correct Answer - A |
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| 720. |
Phenol reacts with methyl chloroformate in the presence of `NaOH` to form product A. A reacts with `Br_(2)` to form product B. A and B are respectivelyA. B. C. D. |
| Answer» Correct Answer - D | |
| 721. |
The oxidation states of Cr in `[Cr(H_(2)O)_(6)]Cl_(3). ,[Cr(C_(6)H_(6))_(2)]` and `K_(2)[Cr(CN)_(2)(O_(2))(NH_(3))]` respectively areA. `+3,0` and` +4`B. `+3,+4` and `+6`C. `+3,+2` and `+4`D. `+3,0` and `+6` |
| Answer» Correct Answer - D | |
| 722. |
Iron exhibits `+2 and +3` oxidation states. Which of the following statements about iron is incorrect?A. Ferrous oxide is more basic in nature than the ferric oxide.B. Ferrous compounds are relatively more ionic than the corresponding ferric compoundsC. Ferrous compounds are less volatile than the corresponding ferric compounds.D. Ferrous compounds are more easily hydrolysed than the corresponding ferric compounds. |
| Answer» Correct Answer - D | |
| 723. |
From the following statements regarding `H_(2)O_(2)`, choose the incorrect statements:A. It decomposes on exposure to lightB. It has to be stored in plastic or wax lined glass bottles in darkC. It has to be kept away from dustD. It can act only as an oxidizing agent |
| Answer» Correct Answer - D | |
| 724. |
Which one of the following alkaline earth metal sulphates has its hydration enthalpy greater than its lattice enthalpy?A. `BeSO_(4)`B. `BaSO_(4)`C. `SrSO_(4)`D. `CaSO_(4)` |
| Answer» Correct Answer - A | |
| 725. |
Energy of an electron is givem by `E = - 2.178 xx 10^-18 J ((Z^2)/(n^2))`. Wavelength of light required to excited an electron in an hydrogen atom from level `n = 1` to `n = 2` will be `(h = 6.62 xx 10^-34 Js` and `c = 3.0 xx 10^8 ms^-1`).A. `2.816 xx 10^(−7)` mB. `6.500 xx 10^(−7)` mC. `8.500 xx 10^(−7)` mD. `1.214 xx 10^(−7)` m |
| Answer» Correct Answer - D | |
| 726. |
The correct statement about gluconic acid isA. It is prepared by oxidation of glucose with HNO3B. It is obtained by partial oxidation of glucoseC. It is decarboxylic acidD. It forms hemiacetals or acetal |
| Answer» Correct Answer - B | |
| 727. |
A and B are in the given reaction ?A. B. C. D. |
| Answer» Correct Answer - A | |
| 728. |
Which of the following reactions are possible ?A. A, B, CB. B, DC. A, C, DD. A, C |
| Answer» Correct Answer - B | |
| 729. |
Which of the following reaction are example of redox reactions?A. `XeF_(2)+PF_(5)to[XeF]^(+)PF_(6)^(-)`B. `XeF_(6)+H_(2)OtoXeOF_(4)+2HF`C. `XeF_(6)+2H_(2)OtoXeO_(2)F_(2)+4HF`D. `XeF_(4)+O_(2)F_(2)toXeF_(6)+O_(2)` |
| Answer» Correct Answer - D | |
| 730. |
The major product obtained in the following reaction is A. B. C. D. |
| Answer» Correct Answer - D | |
| 731. |
Which of the following molecules is least resonance stabilised?A. B. C. D. |
| Answer» Correct Answer - C | |
| 732. |
The group having isoelectronic species isA. `O^(-),F^(-),Na,Mg^(+)`B. `O^(2-),F^(-),Na,Mg^(2+)`C. `O^(-),F^(-),Na^(+),Mg^(2+)`D. `O^(2-),F^(-),Na^(+),Mg^(2+)` |
| Answer» Correct Answer - D | |
| 733. |
In which of the following option all are isoelectronic?A. `N^(3-),O^(2-),F^(-),Na^(+)`B. `Na^(+),N^(-3),F^(-),Li^(+)`C. `Li^(+),N^(3-),F^(-),O^(2-)`D. `Li^(+),Na^(+),O^(2-),F^(-)` |
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Answer» Correct Answer - A |
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| 734. |
Which of the following reagent is not used to carry out the reaction A. `H_(2)//Ni`B. `LiAlH_(4)`C. `Sn//HCl.NaBH_(4)`D. `H_(2)//Pd` |
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Answer» Correct Answer - C |
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| 735. |
Identify the major product `(x)` of given reaction A. B. C. D. |
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Answer» Correct Answer - A |
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| 736. |
The number of chiral carbon atom present in open chain and cyclic form of glucose -A. 3,2B. 4,5C. 5,5D. 6,5 |
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Answer» Correct Answer - B |
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| 737. |
In a radioactive decay chain, the initial nucleus is `overset(232)(90).^(Th)`. At the end there are 6 `alpha`-particles and 4 `beta`-particles which are emitted. If the end nucleus is `overset(A)(Z).^(X),A` and Z are given by :A. `A=208 , Z=80`B. `A=202 , Z=80`C. `A=208 , Z=82`D. `A=200 , Z=81` |
| Answer» Correct Answer - A | |
| 738. |
A paramagnetic material has `10^(28) atoms//m^(3)`. Its magnetic susceptibility at temperature `350K` is `2.8xx10^(-4)`. Its susceptibility at `300K` is :A. `3.267xx10^(-4)`B. `3.672xx10^(-4)`C. `3.726xx10^(-4)`D. `2.672xx10^(-4)` |
| Answer» Correct Answer - A | |
| 739. |
In C, Si Ge and Sn the decreasin order of cetanation isA. `CgtSigtGegtSn`B. `CgtSigtSngtGe`C. `CgtSngtGegtSi`D. `CgtGegtSigtSn` |
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Answer» Correct Answer - A |
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| 740. |
Adsorption of a gas follows the equation `(x)/(m)=kP^((1)/(2))` ltbr. Then the effect of pressure & temperature of physical adsorption of gas on solid is:,A. increase with pressure increase, decrease with temperature increaseB. increase with both temperature & pressure increaseC. decrease with pressure increase, increase with temperature increaseD. decrease with both temperature & pressure increase |
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Answer» Correct Answer - A |
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| 741. |
In which case, process will be spontaneous at all temperature?A. `triangleHlt0,triangleSgt0`B. `triangleHgt0,triangleSgt0`C. `triangleHlt0,triangleSlt0`D. `triangleHgt0,triangleSlt0` |
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Answer» Correct Answer - A |
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| 742. |
Which alloy is used in the manufacturing of aeroplane?A. `Mg-Al`B. `Mg-Sn`C. `Mg-Pb`D. `Mg-Sb` |
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Answer» Correct Answer - A |
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| 743. |
In the give complexes (i). `[Co(NH_(3))_(5)(H_(2)O)]^(3+)` (ii). `[Co(NH_(3))_(5)Cl]^(2+)` (iii). `[Co(NH_(3))_(6)]^(3+)` The decreasing order of `lamda` absorbed isA. `iiigtiigti`B. `iiigtigtii`C. `iigtigtiii`D. `iigtiiigti` |
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Answer» Correct Answer - C |
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| 744. |
Find the Area of Shaded Region bounded between two semicircles drawn on side of length 28cm of a rectangle as diameter. The other side of the rectangle is 14 cm long. Semi-Circles Rectangle Shaded Area |
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Answer» area of sector=`theta/360^o*pir^2=1/6pir^2` area of segment(1)= area of sector - area of triangle (1)=`(pir^2)/6+(pir^2)/6+sqrt3/4r^2` (1)=`(pir^2)/3-sqrt3/4r^2` `(1)+(2)=1/4pir^2` `(2)=(pir^2)/4-(pir^2)/3+sqrt3/4r^2` `(2)=sqrt3/4r^2-(pir^2)/12` `(1)+(2)+(2)+(3)=r^2` `(3)=r^2-1/4pir^2-sqrt3/4r^2+(pir^2)/12` `(3)=r^2(1-sqrt3/4-pi/6)` shaded region =`2r^2(0.044)` =`2(14)^2`(o.044) =`17.248cm^2` |
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| 745. |
The half life period of a first order chemical reaction is `6.93` minutes. The time required for the completion of `99%` of the reaction will be `(log2=0.301)`A. 230.3 minutesB. 23.03 minutesC. 46.06 minutesD. 460.6 minutes |
| Answer» Correct Answer - C | |
| 746. |
The electrons, identified by quantum numbers n and l (i) `n=4l=1` (ii) `n=4l=0` (iii) `n=3l=2` (iv) `n=3l=1` can be placed in increasing order of energy from the lowest to highest asA. n = 4, I = 1B. n = 4, I = 0C. n = 3, I = 2D. n = 3, I = 1 |
| Answer» Correct Answer - B | |
| 747. |
The ejection of the photoelectron from the silver metal in the photoelectric effect exeriment can be stopped by applying the voltage of `0.35 V` when the radiation `256.7 nm` is used. Calculate the work function for silver metal.A. `4.5 eV`B. `5 eV`C. `5.5 eV`D. `4 eV` |
| Answer» Correct Answer - A | |
| 748. |
Lithium forms body centred cubic structure .The length of the side of its unit cells is 351 pm.A tomic radius of lithium will be :A. 75 pmB. 300 pmC. 240 pmD. 152 pm |
| Answer» Correct Answer - D | |
| 749. |
Find the solution of `sinA(1+tanA)+cosA(1+cotA)` |
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Answer» `sinA(1+tanA)+cosA(1+cotA)` `=sinA(1+tanA)+cosA(1+1/tanA)` `=sinA(1+tanA)+cosA((1+tanA)/tanA)` `=(1+tanA)[sinA+cosA/tanA]` `=(1+tanA)[sinA+cosA/(sinA/cosA)]` `=(1+tanA)[(sin^2A+cos^2A)/(sinA)]` `=(1+sinA/cosA)(1/sinA)` `=(cosA+sinA)(cosAsinA)` `= 1/sinA+1/cosA` `=cosecAsecA` `:. sinA(1+tanA)+cosA(1+cotA) = cosecAsecA.` |
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| 750. |
A charge Q is uniformly distributed over a long rod AB of length L as shown in the figure. The electric potential at the point O lying at distance L from the end A is A. `(3Q)/(4piepsilon_(0)L)`B. `(Q)/(4piepsilon_(0)L" In "2)`C. `(Q" In "2)/(4piepsilon_(0)L)`D. `(Q)/(8piepsilon_(0)L)` |
| Answer» Correct Answer - C | |