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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.
| 1651. |
Which of the following gives colour with the water :A. `Cu^(+)`B. `Cr^(3+)`C. `Na^(+)`D. None |
| Answer» Correct Answer - B | |
| 1652. |
A ray of light is incident on a `60^(@)` prism at the minimum deviation position. The angle of refraction at the first face (i.e. incident face) of the prism is-A. `30^(@)`B. `45^(@)`C. `60^(@)`D. Zero |
| Answer» Correct Answer - A | |
| 1653. |
In mammals, milk is digested by action of `,`A. RenninB. AmylaseC. Intestinal bacteriaD. Invertase |
| Answer» Correct Answer - A | |
| 1654. |
Lung cancer is caused byA. Coal miningB. Calcium fluorideC. Cement factoryD. Bauxite mining |
| Answer» Correct Answer - C | |
| 1655. |
A person on long hunger strike and surviving only on water will haveA. Less urea in his urineB. More sodium in his urineC. Less amino acids in his urineD. More glucose in his blood |
| Answer» Correct Answer - A | |
| 1656. |
On the basis of unit cell concept a crystal has :A. 7 systemsB. 14 systemsC. 230 systemsD. 32 systems |
| Answer» Correct Answer - A | |
| 1657. |
The rate constant of the reaction `A rarr B` is `0.6 xx 10^(-3)` mole per second. If the concentration of `A` is `5 M`, then concentration of `B` after `20` minutes is:A. 0.36 MB. 0.72 MC. 1.08 MD. 3.60 M |
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Answer» Correct Answer - B Zero order reaction x=kt `x=0.6xx10^(-3)xx20xx60` `=72xx10^(-2)` x=0.72M `{:(,Ato,B),("Initial case",5,0),("After 20 min.",5-x,x):}` So, [B]=x=0.72M |
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| 1658. |
Which of the following is true for nucleolus?A. It takes part in spindle formationB. It is a membrane-bound structureC. Larger nucleoli are present in dividing cellsD. It is a site for active ribosomal RNA synthesis |
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Answer» Correct Answer - D Nucleolus is a non membranous structure and is a site of r-RNA synthesis. |
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| 1659. |
Which one single organism or the pair of organisms is correctly assigned to its or their named taxonomic group?A. Yeast used in making bread and beer is a fungusB. Nostoc and Anabaena are examples of protistaC. Paramecium and Plasmodium belong to the same kingdom as that of PenicilliumD. Lichen is composite organism formed from the symbiotic association of an algae and a protozoan |
| Answer» Correct Answer - A | |
| 1660. |
Which one of the following ions is essential for photolysis of water?A. BoronB. ManganeseC. ZincD. Copper |
| Answer» Correct Answer - B | |
| 1661. |
`10^(5)` coloumb charge liberated 1 gm silver (Ag). If now charge is doubled then the amount of liberated Ag will be :A. 1 gmB. 2 gmC. 3 gmD. 4 gm |
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Answer» Correct Answer - B `m=ZIt=ZQ implies m prop Q` Then amount of librated Ag will be double. |
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| 1662. |
A mass 1 kg is suspended by a thread. It is (i) lifted up with an acceleration `4.9m//s^(2)` (ii) lowered with an acceleration `4.9m//s^(2)`. The ratio of the tensions isA. `1 : 3`B. `3 : 1`C. `1 : 1`D. `1 : sqrt(5)` |
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Answer» Correct Answer - B `T_(1)- mg = ma" "mg-T_(2)= ma` `T_(1)=m(g+a)" "T_(2)=m(g-a)` `T_(1)/T_(2)=(g+a)/(g-a)=14.7/4.9=3/1` |
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| 1663. |
Lithium forms body centred cubic structure. The length of the side of its unit cell is 351 pm. Atomic radius of the lithium will beA. 300.5 pmB. 240.8 pmC. 151.8 pmD. 75.5 pm |
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Answer» Correct Answer - C for bcc type of unit cell `sqrt(3)=4r ` `r=(sqrt(3))/(4)a` `=(1.732xx351)/(4)` `=151.98` |
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| 1664. |
Among `[Ni(CO)_4], [Ni(CN)_4]^(2-), [NiCl_4]^(2-)` species, the hybridization states at the `Ni` atom are, respectively (At. no.of `Ni=28`)A. `sp^3,dsp^2,sp^3`B. `sp^3, sp^3, dsp^2`C. `dsp^2,sp^3, sp^3`D. `sp^3, dsp^2, dsp^2` |
| Answer» Correct Answer - A | |
| 1665. |
A disc is rotating with angular velocity `omega`. If a child sits on it, what is conserved?A. Linear momentumB. Angular momentumC. Kinetic energyD. Potential energy |
| Answer» Correct Answer - B | |
| 1666. |
For moon, its mass is 1/81 of earth mass and its diameter is 1/3.7 of earth dia. If acceleration due to gravity at earth surface is 9.8 `m//s^2` then at moon its value is :A. 2.86 `m//s^2`B. 1.65 `m//s^2`C. 8.65 `m//s^2`D. 5.16 `m//s^2` |
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Answer» Correct Answer - B `g=(GM)/(R^2) " or " gpropM/R^2` `g_M=(M_M)/(M_E)xx((R_E)/(R_M))^2xxg_E` `=1/81xx(3.7)^2xx9.8=9.8/6=1.65 m//s^2` |
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| 1667. |
The technique called gamete intrafallopian transfer (GIFT) is recommended for those femalesA. who cannot provide suitable environment for fertilisationB. who cannot produce an ovumC. who cannot retain the foetus inside uterusD. whose cervical canal is too narrow to allow passage for the sperms |
| Answer» Correct Answer - B | |
| 1668. |
Continuous bleeding from an injured part of body is due to deficiency ofA. Vitamin -AB. Vitamin - BC. Vitamin - KD. Vitamin - E |
| Answer» Correct Answer - C | |
| 1669. |
The smallest taxon amongst following is ......(A) class(B) order(C) species(D) genus |
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Answer» The smallest taxon amongst following is species. |
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| 1670. |
Taxonomically a species is .........(A) A group of evolutionary related population (B) A fundamental unit in the phylogeny of organisms (C) Classical evolutionary taxonomy (D) A community taken into consideration as an evolutionary base |
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Answer» (B) A fundamental unit in the phylogeny of organisms |
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| 1671. |
Species is ........(A) not related to evolution (B) specific class of evolution (C) specific unit of evolution (D) fertile specific unit in the evolutionary history of a race |
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Answer» Species is fertile specific unit in the evolutionary history of a race |
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| 1672. |
Two words comprising the binomial nomenclature are ........(A) Family & genus (B) order & family (C) genus & species (C) species & variety |
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Answer» Two words comprising the binomial nomenclature are genus & species. |
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| 1673. |
A group of plants or animals with similar traits of any rank is kept under ..........(A) species (B) genus (C) order (D) taxon |
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Answer» A group of plants or animals with similar traits of any rank is kept under taxon |
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| 1674. |
The bulk modulus of a spherical object is `B` if it is subjected to uniform pressure `p`, the fractional decrease in radius is:A. `p/B`B. `B/(3p)`C. `(3p)/(B)`D. `p/(3B)` |
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Answer» Correct Answer - D `B=(p)/(((DeltaV)/(V)))` `(DeltaV)/(V)=(p)/(B)` `3(Deltar)/(r)=(p)/(B)` `(Deltar)/(r)=(p)/(3B)` |
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| 1675. |
Which of the following does not give nucleophilic substitution with alcohol :A. `CH_(3)COCI`B. Acetic anhydrideC. EtherD. None |
| Answer» Correct Answer - C | |
| 1676. |
Density of which of the following substance not decreases on adding in `Br_(2)` vapours :A. `C CI_(4)`B. `CS_(2)`C. EtherD. Coke |
| Answer» Correct Answer - D | |
| 1677. |
Which of the following molecule is not paramagnetic :A. `Cu^(++)`B. `Fe^(2+)`C. `CI^(-)`D. None of the above |
| Answer» Correct Answer - C | |
| 1678. |
`A+BhArrC+D" constant "=K_(1)` `E+FhArrG+H" Constent "=K_(2)` then C + D + E + F `implies` product. The constant of reaction will be :A. `K_(1)/K_(2)`B. `K_(2)/K_(1)`C. `K_(1)K_(2)`D. None of these |
| Answer» Correct Answer - B | |
| 1679. |
Aniline reacts with `Br_(2)` water, `NaNO_(2)//HCL` gives respectively :A. p-Bromo aniline, p-chloro anilineB. 2, 4, 6 tri bromo aniline, p-chloro anilineC. 2, 4, 6 tri bromo aniline, Benzene diazonium chlorideD. p-bromo, aniline, Benzene diazonium chloride |
| Answer» Correct Answer - C | |
| 1680. |
A complex compound which is formed by ligands nitrate and chloride. It gives two moles of AgCl precipitate with `AgNO_(3)`. What will be its formulae :A. `[Co(NH_(3))_(5)NO_(3)]Cl_(2)`B. `[Co(NH_(3))_(5)CI]NO_(3)Cl`C. `[Co(NH_(3))_(4)Cl_(2)]NO_(3)`D. `[Co(NH_(3))_(4)CINO_(3)]Cl` |
| Answer» Correct Answer - A | |
| 1681. |
Stirred-tank bioreactors have been designed forA. purification of productB. addition of preservatives to the productC. availability of oxygen throught the oxygenD. eusuring anaerobic conditions in the culture vessel |
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Answer» Correct Answer - C Availability of oxygen throught the oxygen |
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| 1682. |
The equations of two waves given as `x = a cos (omega t = delta)` and `y = a cos (omega t + alpha)`, where `delta = alpha + pi/2`, then resultant wave represent:A. a circle (c.w)B. A circle (a.c.w)C. an Ellipse (c.w)D. an ellipse (a.c.w) |
| Answer» Correct Answer - B | |
| 1683. |
The frequency order of for `gamma`-rays (b) X-rays (a) UV-rays (c ):A. `b gt a gt c`B. `a gt b gt c`C. `c gt b gt a`D. `a gt c gt b` |
| Answer» Correct Answer - A | |
| 1684. |
The value of quality factor is:A. `(omega L)/(lambda)`B. `(omega)/(RC)`C. `sqrt(LC)`D. L/R |
| Answer» Correct Answer - A | |
| 1685. |
A charge Q is situated at the corner of a cube the electric flux passed through all the six faces of the cube is :A. `(Q)/(6 in_(0))`B. `(Q)/(8 in_(0))`C. `(Q)/(in_(0))`D. `(Q)/(2 in_(0))` |
| Answer» Correct Answer - B | |
| 1686. |
For a radioactive material, half-life is `10` minutes. If initially there are `600` number of nuclei, the time taken (in minutes) for the disintegration of `450` nuclei is.A. 30B. 10C. 20D. 15 |
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Answer» Correct Answer - C Number of nuclei remaining =600-450=150 `(N)/(N_(0))=((1)/(2))^(n)` `(150)/(600)=((1)/(2))^((t)/(t_(1//2)))` `((1)/(2))^(2)=((1)/(2))^((t)/(t_(1//2)))` `t=2t_(1//2)=2xx10` `=20` minutes |
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| 1687. |
The ratio of kinetic energy to the total energy of an electron in a Bohr orbit of the hydrogen atom, isA. `2:-1`B. `1:-1`C. `1:1`D. `1:-2` |
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Answer» Correct Answer - B KE=-(total energy) So, kinetic energy : total energy =1:-1 |
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| 1688. |
An astronomical refracting telescope will have large angular magnification and high angular resolution, when it has an objective lens ofA. Large focal length and large diameterB. Large focal length and small diameterC. small focal length and large diameterD. Small focal length and small diameter |
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Answer» Correct Answer - A For telescope , angular magnification `=(f_(0))/(f_(E))` So, focal length of objective lens should be large . Angular resolution `=(D)/(1.22 lambda)` should be large. So, objective should have large focal length `(f_(0))` and large diameter D. |
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| 1689. |
Monochromatic radiation emitted when electron on hydrogen atom jumps from first excited to the ground state irradiates a photosensitive material. The stopping potential is measured to be `3.57V`. The threshold frequency of the material isA. `1.6xx10^(15) Hz`B. `2.5xx10^(15) Hz`C. `4xx10^(15) Hz`D. `5xx10^(15)Hz` |
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Answer» Correct Answer - A Energy released from emmition of electron is E=(-3.4)-(-13.6)=10.2 eV. From photo-electric equation, work function `phi=E- eV_(0)=h upsilon_(0)` On Solving this `upsilon_(0)=1.6xx10^(15) Hz` |
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| 1690. |
Which of the following circular rods (given radius `r` and length `l`) each made of the same material and whose ends are maintained at the same temperature will conduct most heat?A. `r=2r_(0),l=2l_(0)`B. `r=2r_(0),l=l_(0)`C. `r=r_(0) , l=2l_(0)`D. `r=r_(0), l=l_(0)` |
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Answer» Correct Answer - B Use `R_("Heat")=(l)/(KA)=(l)/(K pir^(2))` |
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| 1691. |
Which colour of the light has the longest wavelength?A. violetB. redC. blueD. green |
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Answer» Correct Answer - B Wavelength is maximum for red |
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| 1692. |
The reaction obey I order with respect to `H_(2)` and `ICl` both. `H_(2) (g) + 2ICl(g) rarr 2 HCl(g) + I_(2) (g)` Which of the following mechanism is in consistent with the given fact ? Mechanism A: `H_(2) (g) + 2Cl rarr 2HCl(g) + I_(2)(g)` Mechanism B: (i) `H_(2)(g) + ICl(g) overset ("slow")rarr HCl(g) + HI(g)` (ii) `HI(g) + ICl(g) rarr HCl(g) + I_(2)`A. A onlyB. B onlyC. A and B bothD. Neither A nor B |
| Answer» Correct Answer - B | |
| 1693. |
The reaction `Ararr B` follows first order kinetics. The time taken for `0.8 mol` of `A` to produce `0.6 mol` of `B` is `1 hr`. What is the time taken for the conversion of `9.0 mol` of `A` to Product `0.675 mol` of `B` ?A. 1 hourB. 0.5 hourC. 0.25 hourD. 2 hour |
| Answer» Correct Answer - A | |
| 1694. |
Which of the following statement is correct for the stablity of ions of ethyl alcohol and phenol:A. Delocalisation of `pi`-electrons in phenoxide ionB. Delocalisation of electrons in ethoxide ionC. Inductive effect of ethyl and phenyl groupD. Localisation of `pi`-electrons in phenoxide ion |
| Answer» Correct Answer - A | |
| 1695. |
Two sources of sound placed close to each other are wmitting progressive waves given by `y_1=4sin600pit` and `y_2=5sin608pit`. An observer located near these two sources of sound will hear:A. 8 beats per second with intensity ratio 81 : 1 between waxing and waningB. 4 beats per second with intensity ratio 81 : 1 between waxing and waningC. 4 beats per second with intensity ratio 25 : 16 between waxing and waningD. 8 beats per second with intensity ratio 25 : 16 between waxing and waning |
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Answer» Correct Answer - B Comparing with `y_(1)=a_(1) sin 2 pi f_(1)t " and " y_(2)=a_(2) sin 2 pi f_(2)` t we get f1=300 Hz, `f_(2)=304 Hz` Number of beats `=f_(2)-f_(1)=4s^(-1)` `(I_("max"))/(I_("min"))=((a_(1)+a_(2))/(a_(1)-a_(2)))^(2)=(I_("max"))/(I_("min"))=((4+5)/(4-5))^(2)=(81)/(1)` |
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| 1696. |
Light of wavelength `500 nm` is incident on a metal with work function `2.28 eV`. The de Broglie wavelength of the emitted electron isA. `le2.8xx10^(-12)m`B. `lt2.8xx10^(-10)m`C. `lt2.8xx10^(-9)m`D. `ge2.8xx10^(-9)m` |
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Answer» Correct Answer - D `E_(Ph)=(1240)/(500)eV=2.48eV` `K.E_(max)=E_(Ph)-W` `=2.48-2.28` `=0.2eV` `=0.2eV` `** lamda_("e min")=(12.27)/(sqrt(K.E_(max)(eV)))`Å `=(12.27)/(sqrt(0.2))` Å `=27.436` Å `=27.436xx10^(-10)m` `lamda_("min")=2.7436xx10^(-9)m` `lamda ge lamda_("min")` |
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| 1697. |
A plank with a box on it at one end is gradully raised about the other end. As the angle of inclination with the horizntal reaches `30^(@)` , the box starts to slip and slide `4.0m` down the plank in `4.0s` . The coefficients of static and knitic friction between the box and the plank will be, respectively. A. 0.4 and 0.3B. 0.6 and 0.6C. 0.6 and 0.5D. 0.5 and 0.6 |
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Answer» Correct Answer - C `mu_(s)=tan30^(@)=(1)/(sqrt(3))=0.57~~0.6` `S=ut+(1)/(2)at^(2)` `4=0+(1)/(2)(gsin30^(@)-mu_(k)cos30^(@))(4)^(2)` `0.5=10xx(1)/(2)-mu_(k)10xx(sqrt(3))/(2)` `5sqrt(3)mu_(k)=4.5` `mu_(k)=0.51` |
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| 1698. |
`4.0 g` of a gas occupies `22.4` litres at NTP. The specific heat capacity of the gas at constant volume is `5.0 JK^(-1)mol^(-1)`. If the speed of sound in this gas at NTP is `952 ms^(-1)`. Then the heat capacity at constant pressure isA. 8.5 `JK^(-1)mol^(-1)`B. 8.0 `JK^(-1)mol^(-1)`C. 7.5 `JK^(-1)mol^(-1)`D. 7.0 `JK^(-1)mol^(-1)` |
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Answer» Correct Answer - A `M=4gm` `V=22.4`litre `C_(V)=5(J)/("Mole K")` `V_("sound")=952m//sec` `C_(P)=?` `V_("sound")=sqrt((gammaPV)/(M))` `gamma=(M)/(PV)V_("sound")^(2)=(C_(P))/(C_(V))` `C_(P)=C_(V)((M)/(PV))V_("sound")^(2)` `=5[(4xx10^(-3))/(10^(-5)xx22.4xx10^(-3))](952)^(2)` `=(20)/(22.4)xx(952)^(2)xx10^(-5)` `=809,200xx10^(-5)=8.09J//"moles k"` |
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| 1699. |
`[Co(NH_(3))_(4)(NO_(2))_(2)]CI` exhibitsA. Linkage isomerism, ionization isomerism and optical isomerismB. Linkage isomerism, ionization isomerism and geometrical isomerismC. Ionization isomerism, geometrical isomerism and optical isomerismD. Ionization isomerism, geometrical isomerism and optical isomerism |
| Answer» Correct Answer - B | |
| 1700. |
Extraction of gold and silver involves leaching with `CN^(-)`ion.silver is later recovered by:A. LiquationB. DistillationC. Zone refiningD. Displacement with Zn |
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Answer» Correct Answer - D Zn being more reactive than Ag and Au , displaces them . From Native ore , `4Ag+8NaCN+2H_(2)O+O_(2) overset("Leaching")to underset("Soluble Sodium dicyanoargentate(I)")(4Na[Ag(CN)_(2)])+4NaOH` `2Na[Ag(CN)_(2)]+Zn overset("Displacement")to Na_(2)[Zn(CN)_(4)]+2Ag darr ` |
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