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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.
| 551. |
Which one of the following -compounds does not react with nitrous acid ? .A. B. C. D. |
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Answer» Correct Answer - C `underset(alphaH="absent")("Nitro Compounds") overset(HNO_(2))to` No reaction `thereforeCH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C)-NO_(2)` will be the answer. |
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| 552. |
The correct order for bond angles is :A. `NO_(2)^(+) lt NO_(2) lt NO_(2)^(-)`B. `NO_(2)^(+) lt NO_(2)^(-) lt NO_(2)`C. `NO_(2)^(-) lt NO_(2)^(+) lt NO_(2)`D. `NO_(2)^(-) lt NO_(2) lt NO_(2)^(+)` |
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Answer» Correct Answer - D `{:(NO_(2),gt,NO_(2)^(+),gt,NO_(2)^(-),),(132^(@),,130^(@),,115^(@),"(Bond angles)"):}` |
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| 553. |
With Which one of the following elements silicon should be doped so as to give p-type of semiconductor?A. SeleniumB. BoronC. GermaniumD. Arsenic |
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Answer» Correct Answer - B If silicon is doped with any of the element of group III (B, Al, Ga etc.) of the periodic table, p-type of semiconductor will be obtained |
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| 554. |
For the cell reaction, `underset((C_(1)))(Cu^(2+)) (aq.)+Zn(s) rarr underset((C_(2)))(Zn^(2+))(aq.)+Cu(s)` the change in free energy `(Delta G)` at a given temperature is a function of:A. In`(C_(1)+C_(2))`B. In`C_(2)/C_(1)`C. In`C_(2)`D. In`C_(1)` |
| Answer» Correct Answer - B | |
| 555. |
Unisexuality of flowers preventsA. geitonogamy, but not xenogamyB. autogamy and geitonogamyC. autogamy, but not geitonogamyD. both geitonogamy and xenogamy |
| Answer» Correct Answer - C | |
| 556. |
Bacterial leaf blight of Rice is caused byA. AlternariaB. ErwiniaC. XanthomonasD. Pseudomonas |
| Answer» Correct Answer - C | |
| 557. |
In humnas one of the constituents of the pancreatic juice which is poured into the doudenum isA. EnterokinaseB. TrypsinogenC. ChymotrypsinD. Trypsin |
| Answer» Correct Answer - B | |
| 558. |
Wind pollinated flowers areA. small, brightly coloured, producing large number of pollen grainsB. small, proudcing large number of dry pollen grainsC. large producing abundant nectar and pollenD. small, producing nectar and dry pollen |
| Answer» Correct Answer - B | |
| 559. |
dB is a standard abbreviation used for the quantitaive expression of :A. the density of bacteria in a mediumB. a particular pollutantC. the dominant Bacillus in a cultureD. a certain pesticide |
| Answer» Correct Answer - B | |
| 560. |
"Chipko movement" was launched for the protection of :A. Wet landsB. GrasslandsC. ForestsD. Livestock |
| Answer» Correct Answer - 3 | |
| 561. |
The mean free path of electrons in a metal is `4 xx 10^(-8)m` The electric field which can give on an average `2eV` energy to an electron in the metal will be in the units `V//m`A. `5xx10^(7)`B. `8xx 10^(7)`C. `5xx10^(-11)`D. `8xx10^(-11)` |
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Answer» Correct Answer - A `qV=2eV` `implies 1.6xx10^(-19)V=2xx 1.6xx10^(-19)V ` `implies V=2V` `E=(V)/(d)` `implies E=(2V)/(4 xx 10^(-8))=5xx10^(7)` |
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| 562. |
Which of the following pairs is not correctly matchedA. Mode of reproduction- Conidia, Example-PenicilliumB. Moe of reproduction-Offset, Example-Water hyacinthC. Mode of reproduction-Rhizome, Example-BananaD. Mode of reproduction-Binary fission, Example-Sargassum |
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Answer» Correct Answer - D Binary fission occurs in unicellular organisms whereas sargassum is multicellular brown algae. |
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| 563. |
Which of the following biomolecules is common to respiration-mediated breakdown of fats, carbohydrates and proteinsA. Glucose-6-phosphateB. fructose 1,6-bisphosphateC. Pyruvic acidD. acetyl CoA |
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Answer» Correct Answer - C Pyruvic acid si the first formed common intermediate between cell carbohydrate, fat & protein metabolism. |
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| 564. |
During cell growth, DNA synthesis takes place inA. S phaseB. `G_(1)` phaseC. `G_(2)` phaseD. M phase |
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Answer» Correct Answer - A S phase |
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| 565. |
Select the wrong statementA. Bacterial cell wall is made up of peptidoglycanB. Pili and fimria are mainly involved in motility of bacterial cellsC. Cyanobacteria lack flagellated cellsD. Mycoplasma is a wall-less microorganism |
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Answer» Correct Answer - B Pili and fimbriae do not help I motility Sex pili-transfer of genetic material Somatic pili or fimbriae-attachment to substratum or host. |
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| 566. |
Which one of the following is wrong for fungiA. They are rukaryoticB. All fungi possess a purely cellulosic cell wallC. They are heterotrophicD. they are both unicellular and multicellar |
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Answer» Correct Answer - B Fungi mostly has chitin as cell wall. |
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| 567. |
Select the mismatchA. Gas vacuoles-green bacteriaB. large central vacuoles-animal cellsC. Protist-EukaryotesD. Methanogens-Prokaryotes |
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Answer» Correct Answer - B large central vacuoles are present in plant cell and not in animal cell. |
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| 568. |
A non- proteinaceous enzyme isA. lysozymeB. ribozymeC. ligaseD. deoxyribonuclese |
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Answer» Correct Answer - B Ribozyme |
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| 569. |
the baloon- shaped structuces called tylosesA. originate in the lumen of vesselsB. characterize the sapwoodC. are extensions of xylem parenchyma cells into vesselsD. are linked to the ascent of sap through xylem vessels |
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Answer» Correct Answer - C Are extension of xylem parenchyma cells into vessels. |
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| 570. |
Cortex is the region found betweenA. Epidermis and steleB. Pericycle and endodermis endodermisC. endodermis and pithD. endodermis and vascular bundle |
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Answer» Correct Answer - A Epidermis and stele |
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| 571. |
Which one of the following is correctly matchedA. Chlamydomonas - ConidiaB. yeast - ZoosporesC. Onion - BulbD. Ginger - Sucker |
| Answer» Correct Answer - C | |
| 572. |
The peak voltage in the output of a half-wave diode rectifier fed with a sinusiodal signal without filter is `10 V`. The `dc` component of the output voltage isA. `10/pi` VB. 10 VC. `20/pi` VD. `10/sqrt2` V |
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Answer» Correct Answer - A For half wave diode rectifier (HWR) `V_"dc"=V_0/pi=10/pi` volts |
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| 573. |
The density of a newly discovered planet is twice that of earth. The acceleration due to gravity at the surface of the planet is equal to that at the surface of the earth. If the radius of the earth is `R`, the radius of the planet would beA. 4RB. 1/4 RC. 1/2 RD. 2R |
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Answer» Correct Answer - C `g="GM"/R^2=(G4/3piR^3rho)/R^2=4/3piGrhoR` Now according to question `g_"planet"=g_"earth"` `rArr 4/3piGrho_"planet"xxR_"planet"=4/3piGrho_"earth"xxR_"earth"` `rArr R_"planet"=R_"earth"/2 (because rho_"planet"=2rho_"earth")` |
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| 574. |
A particle of mass m1 is moving with a velocity `v_(1)` and another particle of mass `m_(2)` is moving with a velocity v2. Both of them have the same momentum but their different kinetic energies are E1 and E2 respectively. If `m_(1) gt m_(2)` thenA. `E_1/E_2=m_1/m_2`B. `E_1 gt E_2`C. `E_1=E_2`D. `E_1 lt E_2` |
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Answer» Correct Answer - D `because E=rho^2/"2m"therefore Eprop 1/m` if `m_1 gt m_2` then ` E_1 lt E_2` |
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| 575. |
Van der Waals real gas acts an ideal gas at which conditions?A. High temp., Low pressureB. Low temp., High pressureC. High temp., High pressureD. Low temp., Low pressure |
| Answer» Correct Answer - A | |
| 576. |
The unit of entropy isA. `JK^(–1) mol^(–1)`B. `J mol^(–1)`C. `J^(-1)K^(–1) mol^(–1)`D. `JK mol^(–1)` |
| Answer» Correct Answer - A | |
| 577. |
In a closed insulated container, a liquid is stirred with a paddle to increase the temperature. Which of the following is true?A. `DeltaE=W ne 0, q=0`B. `DeltaE=W=qne0`C. `DeltaE=0, W=qne0`D. `W=0 DeltaE=q ne 0` |
| Answer» Correct Answer - A | |
| 578. |
DNA precipitation out of a mixture of biomolecules can be achieved by treatment with:A. Chilled chloroformB. IsopropanolC. Chilled ethanolD. Methanol at room temperature |
| Answer» Correct Answer - C | |
| 579. |
Dry indehiscent single-seeded fruit formed from biscarpellary syncarpous inferior ovary isA. berryB. cremocarpC. caryopsisD. cypsela |
| Answer» Correct Answer - D | |
| 580. |
The first carbon dioxide acceptor in `C_(4)`-plants isA. RuDP carboxylaseB. Phosphoric acidC. RUBISCOD. PEP-Carboxylase |
| Answer» Correct Answer - D | |
| 581. |
An electron moves on a straight line path `XY` as shown. The `abcd` is a adjacent to the path of electron. What will be the direction of current, if any, induced in the coil? A. No current inducedB. abcdC. adcbD. The current will reverse its direction as the electron goes past the coil |
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Answer» Correct Answer - D When `e^(-)` is coming towards the loop magnetic flux of the one type increased and when going away same magnetic flux decreased so induced current oppsite to each other. |
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| 582. |
The energy of the electromagetic wave is of the order of `15` keV. To which part of the spectrum dose it belong?A. `gamma`-raysB. X-raysC. Infra-red raysD. Ultraviolet rays |
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Answer» Correct Answer - B `E=15keV=15xx10^(3)xxeV` `becauseE=(12400)/(lamda)eV`Å `lamda=(12400)/(E)eV`Å `lamda=(12400)/(15xx10^(3)eV)eV` Å `lamda=.826`Å`(lamda lt 0.01`Å) It is part of X-rays. |
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| 583. |
Point (Gene mutation) mutation invlvesA. DeletionB. InsertionC. Change in single base pairD. Duplication |
| Answer» Correct Answer - 3 | |
| 584. |
Node of Ranvier occurs whereA. Neurilemma is discontinuousB. Myelin sheath is discontinuousC. Both neurilemma & Myelin sheath are discontinuousD. Covered by myelin sheath |
| Answer» Correct Answer - B | |
| 585. |
Which of the following reactions will not result in the formation of carbon- carbon bond?A. Reimer-Tieman reactionB. Cannizaro reactionC. Wurtz reactionD. Friedel-Crafts acylation |
| Answer» Correct Answer - B | |
| 586. |
Which of the following structures represents neoprene polymer?A. `(CH_(2)-underset(Cl)underset(|)C=CH-CH_(2))_(n)`B. `(CH_(2)-overset(CN)overset(|)CH)_(n)`C. `(CH_(2)-overset(Cl)overset(|)CH)_(n)`D. `(underset(C_(6)H_(5))underset(|)CN-CH_(2))_(n)` |
| Answer» Correct Answer - A | |
| 587. |
n-Propyl alcohol and isopropyl alcohol can be chemically distinguished by which reagent `:`A. `PCl_5`B. ReductionC. Oxidation with Potassium dichromateD. Oznolysis |
| Answer» Correct Answer - C | |
| 588. |
When a block of mass M is suspended by a long wire of length L, the length of the wire becomes (L+l). The elastic potential energy stored in the extended wire isA. `(1)/(2)MgL`B. `Mgl`C. `MgL`D. `(1)/(2)Mgl` |
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Answer» Correct Answer - D Strain `=(l)/(L)`, stress `=(Mg)/(A)` Energy `=(1)/(2)xx"stress"xx"strain"xx"volume"` `=(1)/(2)xx(Mg)/(A)xx(l)/(L)xxAxxL` `=(1)/(2)Mgl` |
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| 589. |
It takes very long time for pineapple plants to produce flowers. Which combination of hormones can be applied to artificially induce flowering in pineapple plants throughout the year to increase yield?A. Cytokinin and Abscisic acidB. Auxin and EthyleneC. Gibberellin and CytokininD. Gibberellin and Abscisic acid |
| Answer» Correct Answer - B | |
| 590. |
What is the direction of movement of sugars in phloem?A. Bi-directionalB. Non-multidirectionalC. UpwardD. Downward |
| Answer» Correct Answer - A | |
| 591. |
In some plants, the female gamete develops into embryo without fertilization. This pheno menon is known as:A. ParthenogenesisB. AutogamyC. ParthenocarpyD. Syngamy |
| Answer» Correct Answer - A | |
| 592. |
Number of base pairs in human chromosomesA. `3xx10^9`B. `3xx10^7`C. `6xx10^8`D. `6xx10^7` |
| Answer» Correct Answer - A | |
| 593. |
The bombarment of `alpha` - particle on `""_7N^14`, emits proton then new atom will be :A. `""_8O^17`B. `""_8O^16`C. `""_6C^14`D. Ne |
| Answer» Correct Answer - A | |
| 594. |
Half life of a substance is 77 days then its decay constant will be :A. 0.9B. 0.09C. 0.009D. 0.013 |
| Answer» Correct Answer - C | |
| 595. |
The product formed in aldol condensation isA. An alpha, beta unsaturated esterB. A beta-hydroxy acidC. A beta-hydroxy aldehyde or a beta-hydroxy ketoneD. An alpha-hydroxy aldehyde or ketone |
| Answer» Correct Answer - C | |
| 596. |
Which of the of the following fluoro -compouds is most likely to beahve as a Lewis base?A. `BF_(3)`B. `PF_(3)`C. `CF_(4)`D. `SiF_(4)` |
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Answer» Correct Answer - B `overset(. .)(P)H_(3)` act as lewis base due to presence of lone pair. |
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| 597. |
Which of the following pairs of ions are isoelectronic and isostructural?A. `CO_(3)^(2-),NO_(3)^(-)`B. `ClO_(3)^(-),CO_(3)^(2-)`C. `SO_(3)^(2-),NO_(3)^(-)`D. `ClO_(3)^(-),SO_(3)^(2-)` |
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Answer» Correct Answer - A::D `CO_(3)^(2-)&NO_(3)^(-)` are isoelectronic and isostructural `underline(O^(-)-underset(O)underset(||)(C)-O^(-)" "O=underset(O)underset(darr)(N)-O^(-))` `sp^(2),` trigonal planar `ClO_(3)^(-) and SO_(3)^(-2)` are also isoelectronic and isostructural `ClO_(3)" "SO_(3)^(-2)` `underline(O=underset(O)underset(||)(overset(** **)(Cl))-O^(-)" "O^(-)-underset(O)underset(||)(overset(** **)(S))-O^(-))` `sp^(3)`, pyramid |
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| 598. |
Among the following Ca ,Mg, P and CI the order of increasing atomic radius isA. `Cl lt P lt Mg lt Ca`B. `P lt Cl lt Ca lt Mg`C. `Ca lt Mg lt P lt Cl`D. `Mg lt Ca lt Cl lt P` |
| Answer» Correct Answer - A | |
| 599. |
Which of the following structures represents the peptide chain?A. `-underset|oversetoversetH|N-undersetOunderset(||)C-underset|overset|C-underset|overset|C-underset|overset|C-oversetHoverset|N-underset|overset|C-underset|overset|C-underset|overset|C-`B. `-oversetHoverset|N-underset|overset|C-undersetunderset(O)(||)C-oversetoverset(H)|N-underset|overset|C-oversetoversetO(||)C-`C. `-oversetoverset(H)|N-underset|overset|C-underset|overset|C-oversetoversetO(||)C-undersetundersetH|N-underset|overset|C-underset|overset|C-oversetoversetH|N-undersetundersetO(||)C-underset|overset|C-underset|overset|C`D. `-oversetoversetH|N-undersetunderset(O)(||)C-undersetunderset(H)(|)N-underset|overset|C-NH-oversetoversetO(||)C-NH-` |
| Answer» Correct Answer - B | |
| 600. |
The correct difference between first and second order reactions is thatA. A first order reaction can catalyzed, a second-order reaction cannot be catalyzedB. The half -life of a first-order reaction does not depend on `[A]_(0)`, the half-life of a second-order reaction does depend on `[A]_(0)`C. The rate of first-order reaction does not depend on reactant concentrations, the rate of a second-order reaction does depend on reactant concentrations.D. The rate of frist-order reaction does not depend on reactant concentrations, the rate of a second-order reaction does not depend on reactant concentrations |
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Answer» Correct Answer - B For first order reaction `t_(1//2)=(0.693)/(K),` which is independent of initial concentration of reactant. For second order reaction , `t_(1//2)=(1)/(k[A_(0)])`, which depend pm initial concentration of reactant. |
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