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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.
| 951. |
The potential energy of a particle in a force field is: `U = (A)/(r^(2)) - (B)/(r )`,. Where `A` and `B` are positive constants and `r` is the distance of particle from the centre of the field. For stable equilibrium the distance of the particle isA. `A//B`B. `B//A`C. `B//2A`D. `2A//B` |
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Answer» Correct Answer - D For Stable equilibrium, `F=(dU)/(dr)=0` we get `r=2A//B` |
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| 952. |
When a mass is rotating in a plane about a fixed point, its angular momentum is directed along.A. the radiusB. the tangent to the orbitC. a line perpendicular to the plane of rotationD. the line making an angle of `45^(@)` to the plane |
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Answer» Correct Answer - C `vec(L)=vec(r )xxm vec(v)` |
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| 953. |
Two persons of masses `55 kg` and `65 kg` respectively are at the opposite ends of a boat. The length of the boat is `3.0 m` and weights `100 kg`. The `55 kg` man walks up to the `65 kg` man and sits with him. If the boat is in still water the centre of mass of the system shifts by.A. zeroB. 0.75 mC. 3.0 mD. 2.3 m |
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Answer» Correct Answer - A Since net external force on the system is zero hence C.O.M. remains unchanged. |
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| 954. |
The vectors `vecA`and `vecB`are such that`|vecA+vecB|=|vecA-vecB|`The angle between the two vectors is:-A. `90^(@)`B. `60^(@)`C. `75^(@)`D. `45^(@)` |
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Answer» Correct Answer - A `|vecA+vecB|=|vecA-vecB|implies|vecA+vecB|^(2)=|vecA-vecB|^(2)` ` impliesA^(2)+B^(2)+2AB cos0=A^(2)+B^(2)-2AB cos0` `impliescos 0=0implies0=90^(@)` |
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| 955. |
Two bodies `A` (of mass `1 kg`) and `B` (of mass `3 kg`) are dropped from heights of `16 m` and `25 m`. Respectively. The ratio of the time taken to reach the ground is :A. `5/4`B. `12/5`C. `5/12`D. `4/5` |
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Answer» Correct Answer - D `therefore h=(1)/(2)"gt"^(2)therefore(t_(1))/(t_(2))=sqrt((h_(1))/(h_(2)))=sqrt((16)/(25))=(4)/(5)` |
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| 956. |
Which of the following compound gives p- cresol with p-methyl diazonium chloride :A. `H_2O`B. `H_3PO_2`C. HCOOHD. `C_6H_5OH` |
| Answer» Correct Answer - A | |
| 957. |
Monochromatic light of frequency `6.0 xx 10^(14) Hz` is produced by a laser. The power emitted is `2 xx 10^(-3)` w. The number of photons emitted, on the average, by the sources per second isA. `5 xx 10^(14)`B. `5 xx 10^(15)`C. `5 xx 10^(16)`D. `5 xx 10^(17)` |
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Answer» Correct Answer - B `n=(P)/(hv)=(2xx10^(-3))/(6.62xx10^(-34)xx6xx10^(14))=5xx10^(15)` |
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| 958. |
A solid cylinder of mass `3 kg` is rolling on a horizontal surface with velocity `4 ms^(-1)`. It collides with a horizontal spring of force constant `200 Nm^(-1)`. The maximum compression produced in the spring will be `:`A. 0.7 mB. 0.2 mC. 0.5 mD. 0.6 m |
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Answer» Correct Answer - D `(1)/(2) mv^(2)[1+(K^(2))/(R^(2))]=(1)/(2)kx_("max")^(2)` Putting `m=3kg, v=4 m//s, (K^(2))/(R^(2))=1//2` (For solid cylinder), `k=200 Nm^(-1)` we get `x_("max")=0.6 m` |
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| 959. |
Which one of the following is employed as a tranquilizer drug ?A. PromethazineB. ValiumC. NaproxenD. Mifepristone |
| Answer» Correct Answer - B | |
| 960. |
Which of the following comp. is coloured and has unpaired electron :A. `CuF_2`B. `K_2Cr_2O_7`C. `KMnO_4`D. `K_4[Fe(CN)_6]` |
| Answer» Correct Answer - A | |
| 961. |
Which of the following does not reduce Fehling solution :A. GlucoseB. FructoseC. SucroseD. Maltose |
| Answer» Correct Answer - C | |
| 962. |
O.N. of P in pyrophosphoric acid isA. `+5`B. `+2`C. `+3`D. `+4` |
| Answer» Correct Answer - A | |
| 963. |
Vessels are found in:-A. All angiosperms and some gymnospermB. Most of the angiosperm and few gymnospermsC. All angiosperms, all gymnosperms and some pteridophytaD. All pteridophyta |
| Answer» Correct Answer - B | |
| 964. |
Maximum number of bases in plasmids isA. 50 kilo baseB. 500 kilo baseC. 5000 kilo basD. 5 kilo base |
| Answer» Correct Answer - B | |
| 965. |
The aleurone layer in maize grain is specially rich in :-A. ProteinsB. StarchC. LipidsD. Auxins |
| Answer» Correct Answer - A | |
| 966. |
Steps taken by government of India in controlling air pollution areA. Use of non-polluting Compressed Natural Gas (CNG) only as fuel by all buses and trucksB. Compulsory mixing of 20% ethyl alcohol with petrol and 20% biodiesel with dieselC. Compulsary PUC (Pollution Under Control) certification of petrol driven vehicles which tests for carbon monoxide and hydrocarbonsD. Permission to use only pure diesel with a maximum of 500 ppm sulphur as fuel for vehicles |
| Answer» Correct Answer - 3 | |
| 967. |
The equation of a wave is represented by `y=10^-4sin[100t-(x)/(10)]`. The velocity of the wave will beA. 100 m/sB. 4 m/sC. 1000 m/sD. 0.00 m/s |
| Answer» Correct Answer - C | |
| 968. |
Which functional group participates in the disulphide bond formation in proteins?A. ThioetherB. ThiolC. ThioesterD. Thiolactone |
| Answer» Correct Answer - B | |
| 969. |
At `25^(@)C`, the dissociation constant of a base. BOH is `1.0xx10^(-12)`. The concentration of hydroxyl ions in `0.01`M aqueous solution of the base would beA. `1.0 xx 10^(-6)` mole`L^(-1)`B. `1.0 xx 10^(-7)` mole`L^(-1)`C. `2.0 xx 10^(-6)` mole`L^(-1)`D. `1.0 xx 10^(-5)` mole`L^(-1)` |
| Answer» Correct Answer - B | |
| 970. |
The correct order in which the O-O bond length increases in the following isA. `O_(3) lt H_(2)O_(2) lt O_(2)`B. `O_(2) lt O_(3) lt H_(2)O_(3)`C. `O_(2) lt H_(2)O_(2) lt O_(3) `D. `H_(2)O_(2) lt O_(2) lt O_(3)` |
| Answer» Correct Answer - B | |
| 971. |
Which molecule has trigonal planar geometry ?A. `NH_(3)`B. `BF_(3)`C. `PCl_(3)`D. `IF_(3)` |
| Answer» Correct Answer - B | |
| 972. |
The main reason for larger number of oxidation states exhibited by the actinoids than the corresponding lanthanoids, is :-A. Lesser energy difference between 5f and 6d orbitals than between 4f and 5d orbitalsB. More energy difference between 5f and 6d orbitals than between 4f and 5d orbitalsC. Greater reactive nature of the actinoids than the lanthanoidsD. Larger atomic size of actinoids than the lanthanoids |
| Answer» Correct Answer - A | |
| 973. |
More number of oxidation states are exhibited by the actinoids than by the lanthonoids. The main reason for this is:- (A. More energy difference between 5f and 6d orbitals than that between 4f and 5d orbitalsB. Lesser energy difference between 5f and 6d orbitals than between 4f and 5d orbitalsC. Greater metallic character of the lanthanoids than that of the corresponding actinoidsD. More active nature of the actinoids |
| Answer» Correct Answer - B | |
| 974. |
For the reaction `C_(2) H_(5) OH (l) + 3O_(2) (g) to 2CO_(2) (g) + 3H_(2) O (l)` which one is true:A. `Delta H = Delta E - RT`B. `Delta H = Delta E + RT`C. `Delta H = Delta E + 2RT`D. `Delta H = Delta H -2RT` |
| Answer» Correct Answer - A | |
| 975. |
The cutting of DNA at specific locations became possible with the discovery ofA. LigaseB. Restriction enzymesC. probesD. Selectable markers |
| Answer» Correct Answer - B | |
| 976. |
A gene showing codominance has:A. Both alleles independentely expressed in the heterozygoteB. one allele dominant on the otherC. alleles tightly linked on the same chromosomeD. alleles that are recessive to each other |
| Answer» Correct Answer - A | |
| 977. |
Match the columns and identify the corret options A. a-iii,b-iv,c-ii,d-`i`B. a-iv,b-iii,c-`i`,d-iiC. a-iii,b-iv,c-`i`,d-iiD. a-iii,b-`i`,c-iv,d-ii |
| Answer» Correct Answer - C | |
| 978. |
Read the different components from (A) to (D) in the list given below and tell he correct order of the components with reference to their arrangement from outer side to inner side in a woody dicot stem (A) Secondary cortex , (B) Wood (C)Secondary phloem , (D) PhellemA. d,c,a,bB. c,d,b,aC. a,b,d,cD. d,a,c,b |
| Answer» Correct Answer - D | |
| 979. |
Which of the following is not a component of downstream processingA. SeparationB. PurificationC. PreservationD. Expression |
| Answer» Correct Answer - D | |
| 980. |
When cell has stalled DNA replication fork , which checkpoint should be predominantly activatedA. `G_(1)//S`B. `G_(2)//M`C. `M`D. Both `G_(2)//M` and M |
| Answer» Correct Answer - B | |
| 981. |
For how many orbitals are the quantum numbers `n = 3, l = 2, m = +2` possible?A. 1B. 2C. 3D. 4 |
| Answer» Correct Answer - A | |
| 982. |
In `HS^(-)`, `I^(-)`, `R-NH_(2)`, `NH_(3)` order of proton accepting tendency will beA. `I- gt NH_3 gt R-NH_2 gt HS^-`B. `NH_3 gt R-NH_3 gt HS^(-) gt I^-`C. `RNH_2 gt NH_3 gt HS^- gt I^-`D. `HS^(-) gt RNH_2 gt NH_3 gt I^-` |
| Answer» Correct Answer - C | |
| 983. |
Which of the following statements is false ?A. The repeat unit in natural rubber is isopreneB. Both starch and cellulose are polymers of glucoseC. Artificial silk is derived from celluloseD. Nylon-66 is an example of elastomer |
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Answer» Correct Answer - D Nylon 6,6 is a fibre not an elastomer. |
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| 984. |
For a first-order reaction `A rarr B` the reaction rate at reactant concentration of `0.10 M` is found to be `2.0 xx 10^(-5) "mol" L^(-1) s^(-1)`. The half-life period of the reaction is |
| Answer» Correct Answer - D | |
| 985. |
Cell membranes are mainly composed of `:`A. PhospholipidsB. ProteinsC. FatsD. Carbohydrates |
| Answer» Correct Answer - A | |
| 986. |
Sickle cell anaemia is due to : -A. Change of Amino Acid in `alpha`-chain of HaemoglobinB. Change of Amino Acid in `beta`-chain of HaemoglobinC. Change of Amino acid in both `alpha` and `beta` chain of HaemoglobinD. Change of Amino acid either `alpha` or `beta` chain of Haemoglobin |
| Answer» Correct Answer - B | |
| 987. |
Which one of the following structures is an organelle within an organelle " " Or Which of the following cell organelle lacks DNA and bounding membraneA. PeroxisomeB. ERC. MesosomeD. Ribosome |
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Answer» Correct Answer - D Ribosome is known as organelle within organelle because it is present in mitochondria & chloroplast also |
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| 988. |
Which one of the following pairs is wrongly matchedA. Salvinia - ProthallusB. Viroids – RNAC. Mustard-SynergidsD. Ginkgo-Archegonia |
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Answer» Correct Answer - A In Salvinia, both male and female gametophytes are found in massulaes not in prothallus. |
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| 989. |
What is common between humans and adult FrogA. Internal fertilizationB. Nucleated RBCsC. Ureotelic mode of excretionD. Four – chambered heart |
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Answer» Correct Answer - C In frogs & humans NH3 is convered into urea in liver for excretion Refer CP Sheet Ecretory system, elimination of nitrogenous waste |
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| 990. |
If `vec(F ) = (60 hat(i) + 15 hat(j) - 3 hat(k)) N` and `vec(V) = (2 hat(i) - 4 hat(j) + 5 hat(k))` m/s, then instantaneous power is:A. 195 wattB. 45 wattC. 75 wattD. 100 watt |
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Answer» Correct Answer - B `P - vec(F).vec(v)` `= (60 hat(i) + 15 hat(j) - 3 hat(k)) . ( hat(i) - 4 hat(j) + 5 hat(k))` = (120 - 6- - 15) = 45 watt |
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| 991. |
A cannot engine has efficiency `(1)/(6)`. If temperature of sink is decreased by `62^(@)C` then its efficiency becomes `(1)/(3)` then the temperature of source and sink:A. `33^(@)C, 67^(@)C`B. `37^(@), 99^(@)C`C. `67^(@)C, 33^(@)C`D. `97K, 37 K` |
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Answer» Correct Answer - B `(W)/(Q) = (1)/(6)` `1 = (T_(L))/(T_(H)) = (1)/(6)` `(T_(L))/(T_(H)) = n (5)/(6)` If sink temp decrease by `62^(@)`C then `1 - (T_(L) - 62)/(T_(H)) = (2)/(6) implies (T_(L) - 62)/(T_(H)) = (2)/(3)` `2T_(H) = 3T_(L) - 186 implie 2T_(H) = 3 xx (5)/(6) T_(H) - 186` `2T_(H) - (5)/(2) T_(H) = - 186 implies (5 - 4)/(2) T_(H) = 186` `T_(H) = 186 xx 2 = 372 K = 99^(@) C` `T_(L) = (5)/(6) xx 372 = 310 K = 37^(@)C` |
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| 992. |
Motion of a particle is given by equation `S = (3t^(3) + 7 t^(2) + 14 + t + 8)`m, The value of acceleration of the particle at t = 1 sec, is:A. `10 m//s^(2)`B. `32 m//s^(2)`C. `23 m//s^(2)`D. `16 m//s^(2)` |
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Answer» Correct Answer - B `v = (ds)/(dt) = (d)/(dt) (3t^(3) + 7t^(2) + 14 t + 8)` `= 9t^(2) + 14 t + 14` `a = (dv)/(dt) = 18 t + 14` ltbr at, t= 1 sec `a = 32 ms^(-2)` |
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| 993. |
The width of river is 1 km. The velocity of boat is 5 km/hr. The boat covered the width of river with shortest will possible path in 15 min. Then the velocity of river stream is:A. 3 km/hrB. 4 km/hrC. `sqrt(29)` km/hrD. `sqrt(41)` km/hr |
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Answer» Correct Answer - A `t = (d)/(sqrt(u^(2) - v^(2))` `(1)/(4) = (1)/(sqrt((5)^(2) - v^(2)))` `(1)/(16) = (1)/(25 - v^(2))` v = 3 km/hr |
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| 994. |
A mass is performing vertical ciruclar motion . If the average velocity of the particle is increased, then at which point the string will break: A. AB. BC. CD. D |
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Answer» Correct Answer - B Tension in the string at the lowest position B is maximum. |
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| 995. |
Which of the following National Parks is home to the famous musk deer or hangulA. Keibul Lamjao National park, manipurB. Bandhavgarh national park, madhya pradeshC. Eaglenest wildlife sanctuary, arunachal pradeshD. Dachigam national park, jammu & Kashmir |
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Answer» Correct Answer - D Dachigam National Park, J & K is known for conferucetion of musk deer | tangut. |
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| 996. |
Which one of the following pairs, is not correctly matched ?A. IAA – Cell wall elongationB. Abscissic acid – Stomatal closureC. Gibberellic acid – Leaf fallD. Cytokinin – Cell division |
| Answer» Correct Answer - C | |
| 997. |
Which of the following is a secondary pollutant ?A. `SO_(2)`B. `CO_(2)`C. `CO`D. `O_(3)` |
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Answer» Correct Answer - D `O^(3)` (ozone) is a secondary pollutant. These are formed by the reaction of primary pollutant. `CO` – Quantitative pollutant `CO_(2)` – Primary pollutant `SO_(2)` – Primary pollutant |
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| 998. |
World Ozone Day is celebrated onA. `16^(th) ` SeptemberB. `21^(st)` AprilC. `5^(th)` JuneD. `22^(nd)` April |
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Answer» Correct Answer - A World Ozone day is celebrated on 16th September. `5^(th)` June - World Environment Day `21^(st) `April - National Yellow Bat Day `22^(nd)` April - National Earth Day |
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| 999. |
Offesets are produced byA. ParthenocarpyB. Mitotic divisionsC. Meiotic divisionsD. Parthenogenesis |
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Answer» Correct Answer - B Offset is a vegetative part of a plant, formed by mitosis. – Meiotic divisions do not occur in somatic cells. – Parthenogenesis is the formation of embryo from ovum or egg without fertilisation. – Parthenocarpy is the fruit formed without fertilisation, (generally seedless) |
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| 1000. |
Double fertilization isA. Fusion of two male gametes with one eggB. Fusion of one male gamete with two polar nucleiC. Fusion of two male gametes of a pollen tube with two different eggsD. Syngamy and triple fusion |
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Answer» Correct Answer - D Double fertilization is a unique phenomenon that occur in angiosperms only. Syngamy + Triple fusion =Double fertilization |
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