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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.
| 1601. |
On the basis of the following `E^(@)` values, the stongest oxidizing agent is `[Fe(CN)_(6)]^(4-) rarr [Fe(CN)_(6)]^(3-)+e^(-), E^(@) = -0.35 V` `Fe^(2+) rarr Fe^(3+)+e^(-), E^(@) = -0.77 V`A. `Fe^(3+)`B. `[Fe(CN)_(6)]^(3-)`C. `[Fe(CN)_(6)]^(4-)`D. `Fe^(2+)` |
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Answer» Correct Answer - B `{:([Fe(CN)_(6)]^(3-)rarr[Fe(CN)_(6)]^(4-)",",E^(@)=+0.35V),(" "Fe^(3+)rarrFe^(2+)",",E^(@)=+0.77V):}` Higher the positive reduction potential, stronger is the oxidizing agent. Oxidizing agent oxidizes other compounds and gets itself reduced easily. |
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| 1602. |
Enthalpy of combustion of carbon to `CO_(2)` is `-393.5 kJ mol^(-1)`. Calculate the heat released upon formation of `35.2 g` of `CO_(2)` from carbon and dioxygen gas.A. `-630kJ`B. `-3.15kJ`C. `-315kJ`D. `+315kJ` |
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Answer» Correct Answer - C `C+O_(2)toCO_(2),DeltaH=-393.3kJ//mol` 44g `CO_(2)` then heat evolved is 393.5 kJ when ltBrgt 35.2g then heat evolved is `(393.5)/(44)xx35.2` =-315 kJ |
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| 1603. |
The hypothetical complex chloro diaquatriammine cobalt (II) chloride can be represented asA. `[CoCl(NH_3)_3(H_2O)_2]Cl_2`B. `[Co(NH_3)_3(H_2O)Cl_3]`C. `[Co(NH_2)_3(H_2O)_2Cl]`D. `[Co(NH_3)_3(H_2O)_3Cl_3]` |
| Answer» Correct Answer - A | |
| 1604. |
Which one of the following is no bioindicator of water pollution?A. Sewage fungusB. Sludge-wormsC. Blood-wormsD. Stone flies |
| Answer» Correct Answer - D | |
| 1605. |
Four diatomic species are listed in different sequence .Which of these represent the correct order of their increasing bond order?A. `O_(2)^(-) lt NO lt C_(2)^(2-) lt He_(@)^(+)`B. `C_(2)^(2-) lt He_(2)^(+) lt O_(2)^(-) lt NO`C. `He_(2)^(+) lt O_(2)^(-) lt NO lt C_(2)^(2-)`D. `NO lt O_(2)^(-) lt C_(2)^(2-) lt He_(2)^(+)` |
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Answer» Correct Answer - C `C_(2)^(20) rArr "total electron = 14"` configuration `KK sigma2s^(2) sigma^(**)2s^(2)pi2px^(2) pi2py^(2) simga2pz^(2)` `"Bouderder"=(Nb-Na)/(2)=(8-2)/(2)=3` `"NO "rArr" total electron"=5+6=11` `KK sigma2s^(2)sigma^(**)2s^(2) sigma2pz^(2) pi2px^(2) pi2py^(2) pipx^(1)` `"Bond order"=((8-3))/(2)=2.5` `O_(2)^(-)rArr KK sigma(2s)^(2)sigma^(**)(2s)^(2)sigma(2pz)^(2)pi(2px)^(2)pi(2py)^(2) pi^(**)(2px)^(2)pi^(**)(2py)^(1)` `B.O=(8-5)/(2)=1.5` `He^(2+)rArr sigma1s^(2)sigma^(**)1s^(1)` `B.O.=(2-1)/(2)=0.5` |
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| 1606. |
A normal visioned man whose father was colour blind, marries a woman whose father was also colour blind .They have their first child as a daughter .What are the chances that this child would be colour blind ?A. 0.25B. 0.5C. 1D. Zero percent |
| Answer» Correct Answer - D | |
| 1607. |
Which of the following hormones can play a significant role in osteoporesisA. Estrogen and Parathyroid hormoneB. Progesterone and AldosteroneC. Aldosterone and ProlactinD. Parathyroid hormone and Prolactin |
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Answer» Correct Answer - A Estrogen promotes the activity of osteoblast and inhibits osteoclast. In an ageing female osteoporosis occurs due to deficiency of estrogen. Parathormone promotes mobilisation of calcium from bone into blood. Excessive activity of parathormone causes demineralisation leading to osteoporosis. |
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| 1608. |
Lysozyme that is present in perspiration, saliva and tears, destroysA. Most virus – infected cellsB. Certain fungiC. Certain types of bacteriaD. All viruses |
| Answer» Correct Answer - C | |
| 1609. |
Which one of the following techniques is safest for the detection of cancers ?A. Radiography (X-ray)B. Computed tomography (CT)C. Histopathological studiesD. Magnetic resonance imaging (MRI) |
| Answer» Correct Answer - D | |
| 1610. |
What is a rainbow ? What is its two types ? How are they formed ? Discuss briefly.A. Scattering & refractionB. Total internal reflection & dispersionC. Reflection onlyD. Diffraction and dispersion |
| Answer» Correct Answer - B | |
| 1611. |
A nuclear decay is expressed as ltbr. `._(6)C^(11) rarr ._(5)B^(11)+beta^(+)+X` Then the unknown particle `X` isA. NeutronB. Anti neutrinoC. NeutrinoD. Proton |
| Answer» Correct Answer - C | |
| 1612. |
In a circuit, the instantaneous values of alternating current and voltages in a circuit is given by `I = (1)/(sqrt2) sin (100 pi t) A` and `E = (1)/(sqrt2) sin (100 pi t + (pi)/(3)) V`. The average power in watts consumed in the circui isA. `(sqrt3)/(4)`B. `(1)/(2)`C. `(1)/(8)`D. `(1)/(4)` |
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Answer» Correct Answer - C `P=V_("rms")I_("rms")cos phi` `=((1)/(2))((1)/(2))cos((pi)/(3))=(1)/(8)` |
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| 1613. |
A `100 Omega` resistance and a capacitor of `100 Omega` reactance are connected in series across a `220` V source. When the capacitor is `50%` charged, the peak value of the displacement current isA. 2.2 AB. `11A`C. 4.4 AD. 11`sqrt(2)A` |
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Answer» Correct Answer - A `X_(C)=100` `R=100` `Z=sqrt((100)^(2)+(100)^(2))=100sqrt(2)` `I=(E)/(Z)=(220)/(100sqrt(2))=(2.2)/(sqrt(2))` `I_(0)=sqrt(2)I=(2.2)/(sqrt(2))xxsqrt(2)=2.2A` |
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| 1614. |
The bactria generally used for genetic engineering is :A. AgrobacteriumB. BacillusC. PseudomonasD. Clostridium |
| Answer» Correct Answer - A | |
| 1615. |
Hormones secreted by the placenta to maintain pregnancy areA. hCG, hPL, progestogens, estrogensB. hCG, hPL, estrogens, relaxin, oxytocinC. hCG, hPL, progestogens, prolactinD. hCG, progestogens, estrogens, glucocorticoids |
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Answer» Correct Answer - A Placenta releases human chorionic gonadotropic hormone (hCG) which stimulates the Corpus luteum during pregnancy to release estrogen and progesterone and also rescues corpus luteum from regression. Human placental lactogen (hPL) is involved in growth of body of mother and breast. Progesterone maintains pregnancy, keeps the uterus silent by increasing uterine threshold to contractile stimuli. |
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| 1616. |
The difference between spermiogenesis and spermiation isA. In spermiogenesis spermatozoa from sertoli cells are released into the cavity of seminiferous tubules, while in spermiation spermatozoa are formed.B. In spermiogenesis spermatozoa are formed, while in spermiation spermatids are formed.C. In spermiogenesis spermatids are formed, while in spermiation spermatozoa are formed.D. In spermiogenesis spermatozoa are formed, while in spermiation spermatozoa are released from sertoli cells into the cavity of seminiferous tubules. |
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Answer» Correct Answer - D Spermiogenesis is transformation of spermatids into spermatozoa whereas spermiation is the release of the sperms from sertoli cells into the lumen of seminiferous tubule. |
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| 1617. |
An acromian process is characieristically found in theA. Skull of frogB. Sperm of mammalsC. Pelvic girdle of mammalsD. Pectoral girdle of mammals |
| Answer» Correct Answer - D | |
| 1618. |
Pollen tube enters the embryo sac usuallyA. Persistant synergidB. Egg cellC. Central cellD. Degenerated synergid |
| Answer» Correct Answer - D | |
| 1619. |
The compound `CH_3-oversetoverset(CH_3)|C=CH-CH_3` on reaction with `NaIO_4` in the presence of `KMnO_4` given :A. `CH_3COCH_3`B. `CH_3COCH_3+CH_3COOH`C. `CH_3COCH_3+CH_3CHO`D. `CH_3CHO+CO_2` |
| Answer» Correct Answer - B | |
| 1620. |
In the reaction : `CH_3CHO+HCN to CH_3 CH(OH)CN overset(H.OH)to CH_3 CH(OH)COOH` an asymmetric centre is generated. This acid obtained would be :A. D-isomerB. L-isomerC. 50% D + 50% L -isomerD. 20% D + 80% L -isomer |
| Answer» Correct Answer - C | |
| 1621. |
An engine has an efficiency of `1/6`. When the temperature of sink is reduced by `62^(@)C`, its efficiency is doubled. Temperature of the source isA. `99^(@)C`B. `124^(@)C`C. `37^(@)C`D. `62^(@)C` |
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Answer» Correct Answer - A `eta=1-(T_(2))/(T_(1))implies (1)/(6)=1-(T_(2))/(T_(1))` `and (1)/(3)=1-((T_(2)-62))/(T_(1))implies (1)/(3)=1-(T_(2))/(T_(1))+(62)/(T_(1))` `implies (1)/(3)=(1)/(6)+(62)/(T_(1))=(1)/(6)=(62)/(T_(1))` |
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| 1622. |
A black body is at `727^(@)C`. It emits energy at a rate which is proportional toA. `(727)^(4)`B. `(727)^(2)`C. `(1000)^(4)`D. `(1000)^(2)` |
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Answer» Correct Answer - C `E= sigmaT^(4) :. E prop(727+273)^(4)implies E prop (1000)^(4)` |
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| 1623. |
The phase difference between the instantaneous Velocity and acceleration of a particle executing simple harmonic motion isA. ZeroB. `0.5 pi`C. `pi`D. `0.707 pi` |
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Answer» Correct Answer - B If `v=v_(0) sin omega t ` then `a=a_(0) cos omega t` `implies` phase difference `=(pi)/(2)=0.5 pi` |
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| 1624. |
The frequency of a light wave in a material is `2xx10^(14)Hz` and wavelength is `5000 Å`. The refractive index of material will beA. `1.33`B. `1.40`C. `1.50`D. `3.00` |
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Answer» Correct Answer - D Refractive index `mu=(c)/(v)=(c)/(v lambda)` `=(3xx10^(8))/(2xx10^(14)xx5000xx10^(-10))=3` |
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| 1625. |
HIV infectsA. RBCB. T – helper cellsC. B - cellsD. Basophils |
| Answer» Correct Answer - B | |
| 1626. |
What change occurs by changing one base in DNAA. Always a change of one amino acid in proteinB. Change in complex sequence of amino acidC. Always a change in property of proteinD. Does not necessarily change the phenotype |
| Answer» Correct Answer - D | |
| 1627. |
Percentage energy transferred to higher trophic level in food chain is:-A. 0.01B. 0.1C. 0.9D. 1 |
| Answer» Correct Answer - B | |
| 1628. |
Beside `CH_(4)` and `CO_(2)` other green house gas from agriculture area:-A. `SO_(2)`B. `NH_(3)`C. `NO_(2)`D. CFC |
| Answer» Correct Answer - C | |
| 1629. |
Water containing cavities in vascular bundles are found inA. CycasB. PinusC. SunflowerD. Maize |
| Answer» Correct Answer - D | |
| 1630. |
Best defined function of manganese in green plants isA. Nitrogen fixationB. Water absorptionC. Photolysis of waterD. Calvin cycle |
| Answer» Correct Answer - C | |
| 1631. |
Which of the following is an electron-deficient compound?A. `BeCI_(2)`B. `BCI_(3)`C. `C CI_(3)`D. `PCI_(3)` |
| Answer» Correct Answer - B | |
| 1632. |
Which statement is wrong about pH and `H^(+)`A. pH of neutral water does not zeroB. Adding1N. 1N `sol^(n)` of `CH_(3)COOH` and NaOH pH will be sevenC. pH of dilute and hot `H_(2)SO_(4)` is more than concentrate and cold `H_(2)SO_(4)`D. Mixing solution of `CH_(2)COOH` and HCI pH will be less than 7 |
| Answer» Correct Answer - B | |
| 1633. |
A compound formed by elements `A` and `B` crystallises in a cubic structure where `A` atoms are present at the corners of a cube and the `B` atoms are present at the face centres.The formula of the compound isA. ABB. `AB_(3)`C. `A_(2)B_(2)`D. `A_(2)B_(3)` |
| Answer» Correct Answer - B | |
| 1634. |
The conjugate acid of `overset(Theta)NH_(2)` isA. `NH_(4) OH`B. `NH_(4)^(+)`C. `NH^(-2)`D. `NH_(3)` |
| Answer» Correct Answer - D | |
| 1635. |
In quantitative analysis of second group in laboratory, `H_2S` gas is passed in acidic medium for precipitation. When `Cu^(2+)` and `Cd^(2+)` react with `KCN`, then for product true statement isA. `K_(2)[Cu(CN)_(4)]`- More stable `K_(2) [Cd(CN)_(4)]`- Less stableB. `K_(2)[Cu(CN)_(4)]`-Less stable `K_(2)[Cd(CN)_(4)]`More stableC. `K_(3)[Cu(CN)_(4)]`-More stable `K_(2)[Cd(CN)_(4)]`-less stableD. `K_(3)[CU(Cu)_(4)]`- Less stable `K_(3)[Cd(CN)_(4)]` More stable |
| Answer» Correct Answer - C | |
| 1636. |
`CuSO_(4)` solution reacts with excess of KCN solution to form:-A. `K_2[Cu(CN)_4]`B. `K_3[Cu(CN)_4]`C. `CuCN_2`D. `Cu[KCu(CN)_4]` |
| Answer» Correct Answer - B | |
| 1637. |
Position of non-polar and polar parts in micelle isA. Polar at outer surface but non polar at inner surfaceB. Polar at inner surface non polar at outer surfaceC. Distributed over all the surfaceD. Are present in the surface only |
| Answer» Correct Answer - A | |
| 1638. |
In borax bead test, which compound is formed?A. Ortho borateB. Meta borateC. Double oxideD. Tetra borate |
| Answer» Correct Answer - B | |
| 1639. |
IUPAC name of the following is `CH_2=CH-CH_2-CH_2-C-=CH`A. 1, 5-hexenyneB. 1-hexene-5-yneC. 1-hexyne-5-eneD. 1, 5-hexynene |
| Answer» Correct Answer - B | |
| 1640. |
`Zn` gives `H_(2)` gas with `H_(2)SO_(4)` and `HCl` but not with `HNO_(3)` becauseA. Zn act as oxidising agent when react with `HNO_3`B. `HNO_3` is weaker acid then `H_2SO_4` & HClC. In electrochemical series Zn is above hydrogenD. `NO_3^Theta` is reduced in prefference to hydroniumion |
| Answer» Correct Answer - D | |
| 1641. |
Blood analysis of a patient reveals an unusually high quantity of carboxyhemoglobin content. Which of the following conclusion is the most likely to be correct? The patient has been inhaling poliuted air containing unusually high content ofA. ChloroformB. Carbon dioxideC. Carbon monoxideD. carbon disulphide |
| Answer» Correct Answer - C | |
| 1642. |
How many moles of lead (II) chloride will be formed from a reaction between 6.5 g of PbO and 3.2 g of HCl?A. 0.011B. 0.029C. 0.044D. 0.333 |
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Answer» Correct Answer - B `underset("x mole")(PbO)+underset("2x moles")(2HCl)rarrunderset("x mole")(PbCl_(2))+H_(2)O` `underset("= 0.029 mole")((6.5)/(224)"mole")" "underset("= 0.087 mole")((3.2)/(36.5)"mole")` Thus, 0.029 mole of lead (II) chloride will be formed from a reaction between 6.5 g of PbO and 3.2 g of HCl. |
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| 1643. |
If `epsilon_(0)` be the permittivity of vacuum and r be the radius of orbit of H- atom in which electron is revolving, then velocity of electron is given by :A. `(e)/sqrt(4pimepsilon_(0)r)`B. `(2e)/sqrt(pimepsilon_(0)r)`C. `(e)/sqrt(pimepsilon_(0)r)`D. `(e)/sqrt(4pimepsilon_(0)r)` |
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Answer» Correct Answer - A `(mv^(2))/r=1/(4piin_(0)) xx e^(2)/r^(2)` `v = e/sqrt(4piin_(0)rm)` |
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| 1644. |
For an endothermic reaction energy of activation is `E_(a)` and enthlpy of reaction is `Delta H` (both in `kJ "mol"^(-1)`). Minimum value of `E_(a)` will beA. less than ∆HB. equal to `Delta`HC. more than `Delta H`D. equal to zero |
| Answer» Correct Answer - C | |
| 1645. |
In which of the following equilibrium` K_(c)` and` K_(p)` are not equal?A. `2NO_((g))hArrN_(2(g))_O_(2)(g)`B. `SO_(2(g))+NO_(2(g))hArrSO_(3(g))+NO((g))`C. `H_(2(g))+I_(2(g))HArr2HI_((g))`D. `2C_((s ))+O_(2(g))hArr2CO_(2(g))` |
| Answer» Correct Answer - D | |
| 1646. |
Which of the following ions will exhibit colour in aqueous solution ?A. `La^(3+)(z=57)`B. `Ti^(3+)(z=22)`C. `LU^(3+)(z=71)`D. `Sc^(3+)(z=21)` |
| Answer» Correct Answer - B | |
| 1647. |
The alkali metals form salt like hydrides by the direct synthesis at elevated temperature. The termal stability of these hydrides decreases in which of the following orders ?A. NaHgtLiHgtKHgtRbHgtCsHB. LiHgtNaHgtKHgtRbHgtCsHC. CsHgtRbHgtKHgtNaHgtLiHD. KHgtNaHgtLiHgtCsHgtRbH |
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Answer» Correct Answer - B The ionic character of the bonds in hydrides increase from LiH to CsH so thermal stability of these hydrides decreases as follows : LiH gt NaH gt KH gt RbH gt CsH |
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| 1648. |
In which of the following coordination entites the magnitude of `Delta_(0)` (CFSE in octehedral field) will be maximum. `(At. No .Co = 27)`A. `[Co(CN)_(6)]^(3-)`B. `[Co(C_(2)O_(4))_(3)]^(3-)`C. `[Co(H_(2)O)_(6)]^(3+)`D. `[Co(NH_(3))_(6)]^(3+)` |
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Answer» Correct Answer - A CFSE in octahedral field depends upon the nature of ligands. Stronger the ligands larger will be the value of `Delta_("oct")`. |
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| 1649. |
Which one of the following is the major impurity in pig iron?A. MnB. PC. GraphiteD. S |
| Answer» Correct Answer - C | |
| 1650. |
Number of significant number will be in following numbers : (a) 161 cm (b) 0.0161 ( c) 1.61A. 3, 3, 3B. 3, 4, 3C. 3, 2, 3D. 3, 4, 4 |
| Answer» Correct Answer - A | |