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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.
| 1201. |
Which of the following compounds will not undergo Friedel`-` Crafts reaction easily ?A. CumeneB. XyleneC. NitrobenzeneD. Toluene |
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Answer» Correct Answer - C `–NO_(2)` group is strong deactivating. `therefore` It inhibits F.C.R. |
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| 1202. |
A uniform force of `(3hati+hatj)` N acts on a particle of mass 2kg. Hence, the particle is displaced from position `(2hati+hatk)`m to position `(4hati+3hatj-hatk)`m. The work done by the force on the particle isA. 9 JB. 6 JC. 13 JD. 15 J |
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Answer» Correct Answer - A Displacement `=vecr_(2)-vecr_(1)=(4hati+3hatj-hatk)-(2hati+hatk)` `=2hati + 3 hatj- 2 hatk ` Force `vecF=3hati+hatj` Work `W=vecF.vecd=(3hati+hatj).(2hati+3hatj-2hatk)` `=6+3=9J` |
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| 1203. |
The efficiency of a fuel cell is given by:A. `(DeltaS)/(DeltaG)`B. `(DeltaH)/(DeltaG)`C. `(DeltaG)/(DeltaS)`D. `(DeltaG)/(DeltaH)` |
| Answer» Correct Answer - D | |
| 1204. |
Given the bond energies of `H - H` and `Cl - Cl` are `430 kJ mol^(-1)` and `240 kJ mol^(-1)`, respectively, and `Delta_(f) H^(@)` for `HCl` is `- 90 kJ mol^(-1)`. Bond enthalpy of `HCl` isA. 245 kJ `mol^(-1)`B. 290 kJ `mol^(-1)`C. 380 kJ `mol^(-1)`D. 425 kJ `mol^(-1)` |
| Answer» Correct Answer - D | |
| 1205. |
The momentum of a photon of energy 1 MeV in kg-m/s, will beA. 0.33 × `10^(6)`B. ` 7 × 10^(–24)`C. `10^(–22)`D. ` 5× 10^(–22)` |
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Answer» Correct Answer - D For a photon E=pc `impliesp=(E)/(c)=(10^(6)xx1.6xx10^(-19))/(3xx10^(8))=5.33xx10^(-22)` `kgms^(-1)` |
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| 1206. |
The radius of germanium `(Ge)` nuclide is measured to be twice the radius of `._(4)^(9)Be`. The number of nucleons in `Ge` areA. 73B. 74C. 75D. 72 |
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Answer» Correct Answer - D `R=R_(0)A^(1//3)impliesA_(G_(e))=((R_(G_(E)))/R_(V_(e)))^(3)(A_(B_(e)))=(2)^(3)(9)` `8xx9=72` |
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| 1207. |
The molar specific heat at constant pressure of an ideal gas is `(7//2 R)`. The ratio of specific heat at constant pressure to that at constant volume isA. `7/5`B. `8/7`C. `5/7`D. `9/7` |
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Answer» Correct Answer - A `C_(p)=(7)/(2)RimpliesC_(V)=C_(P)-R=(5)/(2)Rimpliesgamma=(C_(P))/(C_(V))=(7)/(5)` |
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| 1208. |
The escape velocity of a body from the surface of earth isA. `sqrt2`B. `1/sqrt2`C. 1D. 6 |
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Answer» Correct Answer - B According to question and by using COME`-(GMm)/(R+R)+(1)/(2)m(fv)^(2)=0+0` `impliesfvsqrt((GM)/(R)) but v=sqrt((2GM)/(R))` Therefore `fsqrt((GM)/(R))but v=sqrt((2GM)/(R))impliesf=(1)/sqrt2` |
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| 1209. |
Two sound waves with wavelengths `5.0 m` and `5.5 m` respectively, each propagates in a gas with velocity `30m//s` We expect the following number of beats per second:A. 12B. 0C. 1D. 6 |
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Answer» Correct Answer - D Number of beats per second `=(v)/(lambda_(1))-(v)/(lambda_(2))` `=330((1)/(5)-(1)/(5.5))=66-60=6` |
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| 1210. |
A system is expanded under adiabatic processA. Temp. increaseB. `DeltaE` decreasesC. `DeltaE` increasesD. None of these |
| Answer» Correct Answer - B | |
| 1211. |
200 mL of an aqueous solution of a protein contains its 1.26g. The osmotic pressure of this solution at 300K is found to be `2.57 xx 10^(-3)` bar. The molar mass of protein will be `(R = 0.083 L bar mol^(-1)K^(-1))`A. `61038 g mol^(–1)`B. `51022 g mol^(–1)`C. `122044 g mol^(–1)`D. `31011 g mol^(–1)` |
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Answer» Correct Answer - A `piv=w/mRT` `2.5xx10^-3xx200/1000=1.26/mxx0.083xx300` m=61038 gm `mol^-1` |
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| 1212. |
Which of the following oxide is amphoteric?A. `CO_(2)`B. `SnO_(2)`C. CaOD. `SiO_(2)` |
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Answer» Correct Answer - B `SnO_2` react with acid as well base so amphoteric `SnO_2+4HCLtoSnCl_4+2H_2O` `SnO_2+2NaOHtoNa_2SnO_3+H_2O` |
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| 1213. |
The following reaction take place in the blast in the proparation of impure iron identify the reaction pertatining to the formetion of the slagA. `2C(s) + O_(2)(g) to 2CO (g)`B. `Fe_(2)O_(3)(s) + 3CO (g) → 2Fe(l) + 3CO_(2)(g)`C. `CaCO_(3)(s) to CaO(s) + CO_(2)(g)`D. `CaO(s) + SiO_(2)(s) to CaSiO_(3)(s)` |
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Answer» Correct Answer - D `{:(SiO_2,+CaOto,CaSiO_3),("Acidic","Basic","Slag"),("Impunity","Flux",""):}` |
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| 1214. |
A compound contains three elements `A,B` and `C`, if the oxidation number of `A=+2B=+5` and `C=-2` then possible formula of the compound isA. `A_(2)(BC_(2))_(2)`B. `A_(3)(BC_(4))_(2)`C. `A_(2)(BC_(3))_(2)`D. `A_(3)(B_(2)C)_(2)` |
| Answer» Correct Answer - B | |
| 1215. |
`R` and `S` paris of enantiomers differ form one another inA. Rotation of PPlB. Solubility in achiral solventC. Chemical propertiesD. Dipole moment |
| Answer» Correct Answer - A | |
| 1216. |
Aerobic respiratory pathway is appropriately termedA. AnabolicB. CatabolicC. ParabolicD. Amphibolic |
| Answer» Correct Answer - 4 | |
| 1217. |
What is B.O.D.:-A. The amount of `O_2` utilised by organisms in waterB. The amount of `O_2` utilized by micro organisms for decompositionC. The total amount of `O_2` present in waterD. All of the above |
| Answer» Correct Answer - B | |
| 1218. |
An autmobile moves on road with a speed of `54 km//h`. The radius of its wheel is `0.45 m` and the moment of inertia of the wheel about its axis of rotation is `3 kg m^(2)`. If the vehicle is brought to rest in `15 s`, the magnitude of average torque tansmitted by its brakes to the wheel is :A. 2.86 kg `m^(2)s^(-2)`B. 6.66 kg `m^(2)s^(-2)`C. 8.58 kg `m^(2)s^(-2)`D. 10.86 kg `m^(2)s^(-2)` |
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Answer» Correct Answer - B `V=54(km)/(h)=15m//s` `omega_(0)=(v)/(r)=(15)/(.45)(rad)/(s),omega=0` `omega=omega_(0)+alphat` `0=(15)/(.45)+alpha15` `alpha=-(15)/(.45xx15)=-(1)/(.45)(rad)/(s^(2))` `tau=I alpha=(3)/(.45)=-(300)/(45)=-6.66kgm^(2)//s^(2)` |
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| 1219. |
At the time of organogensis, genes regulate the process at different levels and at different time due to :A. PromoterB. RegulatorC. IntronD. Exon |
| Answer» Correct Answer - D | |
| 1220. |
Which is not a vestigial organ in man:A. Third molarB. NailsC. Segmental muscles of abdomenD. Coccyx |
| Answer» Correct Answer - B | |
| 1221. |
Which of the following is correct match -A. Down Syndrome = 21st ChromosomeB. Sickel cell anaemia = X – ChromosomeC. Haemophilia = Y – ChromosomeD. Parkinson Disease = X & Y Chromosome |
| Answer» Correct Answer - A | |
| 1222. |
Significance of mimicry is :A. Attack (Offance)B. Protection (Defence)C. Both (1) & (2)D. Isolation |
| Answer» Correct Answer - C | |
| 1223. |
Mycorrhiza is an example ofA. Symbiotic relationshipB. EctoparasitismC. EndoparasitismD. Decomposers |
| Answer» Correct Answer - A | |
| 1224. |
Which one is good for NEET/AIIMS/JIPMER entrance examination(A) Coaching Institutes (like KELVIN, AAKASH etc.) or(B) BYJU'S ( The Online learning App)? |
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Answer» Both are good and have advantages for preparing NEET/AIIMS Exams. But the thing is the most effective way to prepare is to join Offline course first and then go for Online course. This will clear your concept more deeply. The one thing is very important is you must join online test series from any companies because you know exams will be held online from next year. You can join online test series by AAKASH, ALLEN, Careerpoint |
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| 1225. |
Spindle fibre unite with which structure of chromosomes:A. ChromocentreB. ChromomereC. KinetochoreD. Centriole |
| Answer» Correct Answer - C | |
| 1226. |
Which of the following have carbohydrate as prosthetic group:A. GlycoproteinB. ChromoproteinC. LipoproteinD. Nucleoprotein |
| Answer» Correct Answer - A | |
| 1227. |
The kind of epithelium which forms inner walls of blood vessels isA. cuboidal epitheliumB. columnar epitheliumC. ciliated columnar epitheliumD. squamous epithelium |
| Answer» Correct Answer - D | |
| 1228. |
Regarding cross-linked or network polymers, which of the following statements is incorrect ?A. Examples are bakelite and melamineB. They are formed from bi- and tri- functional monomers.C. They contain covalent bonds between various linear polymer chainsD. They contain strong covalents bonds in their polymer chains. |
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Answer» Correct Answer - D Cross linked or network polymerrs are formed from bi-functional and tri-functional monomers and contain strong covalent bonds between various linear polymer chains, e.g. bakelite , melamine etc. Option (4) is not related to cross-linking . |
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| 1229. |
The wavelength of light absorbed by Pr form of phytochrome isA. 620 nmB. 640 nmC. 680 nmD. 720 nm |
| Answer» Correct Answer - B | |
| 1230. |
All enzymes of TCA cycle are located in the mitochondrial matrix except one which is located in inner mitochondrial membranes in eukaryoes and in cytosol in prokaryotes. This enzyme isA. Succinate dehydrogenaseB. Lactate dehydrogenaseC. Isocitrate dehydrogenaseD. Malate dehydrogenase |
| Answer» Correct Answer - A | |
| 1231. |
Which of the following statements is not true for retrovirusesA. Retroviruses carry gene for RNA-dependent DNA polymeraseB. The genetic material in mature retroviruses is RNAC. Retroviruses are causative agents for certain kinds of cancer in manD. DNA is not present at any stage in the life cycle of retroviruses |
| Answer» Correct Answer - D | |
| 1232. |
Which one of the following arrangements represents the correct order of electron gain enthalpy of the given atomic species?A. `F lt Cl lt O lt S `B. `S lt O lt Cl lt F`C. `O lt S lt F lt Cl`D. `Cl lt F lt S lt O` |
| Answer» Correct Answer - C | |
| 1233. |
Reaction `2BaO_(2)(s)hArr2BaO(s) + O_(2)(g), Delta H = +ve`. At equilibrium condition, pressure of `O_(2)` is depended on:A. Increase mass of `BaO_2`B. Increase mass of BaOC. Increase temp. on `Eq^m`.D. Increase mass of `BaO_2` and BaO both |
| Answer» Correct Answer - C | |
| 1234. |
Which of the following is electron deficient molecule ?A. `C_(2)H_(6)`B. `SiH_(4)`C. `PH_(3)`D. `B_(2)H_(6)` |
| Answer» Correct Answer - D | |
| 1235. |
`H_(2)S` gas when passed through a solution of cations containing `HCl` precipitates the cations of second group in qualitative analysis but not those belonging to the fourth group. It is becauseA. Presence of HCl decreases the sulphide ion concentrationB. Sulphides of group IV cations are unstable in HClC. Solubility product of group II sulphides is more than that of group IV sulphidesD. Presence of HCl increases the sulphides ion concentration |
| Answer» Correct Answer - A | |
| 1236. |
`alpha`-particle consists ofA. 2 protons onlyB. 2 protons and 2 neutrons onlyC. 2 electrons, 2 protons and 2 neutronsD. 2 electrons and 4 protons only |
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Answer» Correct Answer - B `alpha` particle is nucleus of He, so it contains 2 protons and 2 neutrons |
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| 1237. |
If we ignore the effect of crossing over how many different haploid cells arise by meiosis in a diploid cell having 2n=12? |
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Answer» The answer will be 64 Explanation: The number of different haploid cells arise by meiosis can be calculated by 2n n=number of haploid chromosome. given, 2n = 12, n = 6 2n = 26 = 64 Crossing over is the exchange of genetic material between two homologous chromosomes which occurs during the pachytene stage of meiosis I. It is catalysed by an enzyme called recombinase. The phenomenon of crossing over results in variations. Crossing over is not required for reductional division that takes place during meiosis. Hence, reductional division would take place irrespective of the effect of crossing over. Therefore, at the end of meiosis, 4 haploid cells would be formed. In this case, 2n=12; n=6. Thus, 4 haploid cells, each with n=6 chromosomes would be released. Although there is no crossing over, all the 4 haploid cells will not resemble each other as genetic variation occurs due to independent assortment. |
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| 1238. |
Select the correct sequence for transport of sperm cells in male reproductive system.A. Testis `to`t Epididymis `to` Vasa efferentia `to` Vas deferens `to` Ejaculatory duct `to` Inguinal canal ` to` Urethra `to` Urethral meatusB. testis `to` Epididymis `to` Vasa efferentia `to` Rete testis-tInguinal canal `to` UrethraC. Seminiferous tubules `to` Rete testis `to` Vasa efferentia `to` Epididymis `to` Vas deferens `to` Ejaculatory duct `to` Urethra `to` Urethral meatusD. Seminiferous tubules `to` Vasa efferentia `to` Epididymis `to` Inguinal canal `to` Urethra |
| Answer» Correct Answer - C | |
| 1239. |
Thorn of Bougainvillea and tendril of Cucurbita are examples of `:`A. vestigial organsB. retrogressive evolutionC. analogous organsD. homologous organs |
| Answer» Correct Answer - D | |
| 1240. |
What is the best pH of the soil for cultivation of plants:-A. 3.4 – 5.4B. 6.5 – 7.5C. 4.5 – 8.5D. 5.5 – 6.5 |
| Answer» Correct Answer - D | |
| 1241. |
Which of the following is true for a reaction in which all the reactant & product are liquidsA. `DeltaH=DeltaE`B. `DeltaH`=`DeltaW`C. `DeltaHgtDeltaE`D. None of the above |
| Answer» Correct Answer - A | |
| 1242. |
Which of the following reaction gives by isocyanideA. Rimer Tieman reactionB. Carbyl amine reactionC. Hoffmann bromamide reactionD. None of the above |
| Answer» Correct Answer - B | |
| 1243. |
`H_2O` is dipolar, whereas `BeF_2` is not. It is becauseA. `H_2O` involves hydrogen bonding whereas `BeF_2` is a discrete moleculeB. `H_2O` is linear and `BeF_2` is angularC. `H_2O` is angular and `BeF_2` is linearD. The electronegativity of F is greater than that of O |
| Answer» Correct Answer - C | |
| 1244. |
Cr in `[Cr(NH_3)_6] Br_3` has number of unpaired electron :A. 4B. 3C. 1D. 2 |
| Answer» Correct Answer - B | |
| 1245. |
What is common between parrot, platypus and kangaroo ?A. OvoparityB. HomoiothermyC. Toothless jawsD. Functional post-anal tail |
| Answer» Correct Answer - B | |
| 1246. |
The energy -releasing process in which the substrate is oxidized without an external electeron acceptor is calledA. aerobic respirationB. glycolysisC. fermentationD. photorespiration |
| Answer» Correct Answer - C | |
| 1247. |
Three of the following statements about enzymes are correct and one is wrong. Which one is wrongA. Enzymes are denatured at high temperature but in certain exceptional organisms they are effective even at temperatures `80^(@) - 90^(@)C`B. Enzymes are highly specificC. Most enzymes are proteins but some are lipidsD. Enzymes require optimum pH for maximal activity |
| Answer» Correct Answer - C | |
| 1248. |
Identify the components labelled A, B, C and D in the diagram below from the list (i) to (vii) given along with Components : (i) Cristae of mitochondria (ii) Inner membrane of mitochondria (iii) Cytoplasm (iv) Smooth endoplasmic reticulum (v) Rough endoplasmic (vi) Mitochondrial matrix (vii) Cell vacuole (viii) Nucleus The correct components are A. `{:("A B C D"),("(i) (iv) (viii) (vi)"):}`B. `{:("A B C D"),("(vi) (v) (iv) (vii)"):}`C. `{:("A B C D"),("(v) (i) (iii) (ii)"):}`D. `{:("A B C D"),("(v) (iv) (viii) (iii)"):}` |
| Answer» Correct Answer - D | |
| 1249. |
Test tube baby means a baby born whenA. It is developed in a test tubeB. It is developed through tissue culture methodC. The ovum is fertilised externally and thereafter implanted in the uterusD. It develops from a non-fertilized egg |
| Answer» Correct Answer - C | |
| 1250. |
The coconut water and the edible part of coconut are equivalent to or the morphological nature of the edible part of coconut isA. MesocarpB. EmbryoC. EndospermD. Endocarp |
| Answer» Correct Answer - C | |