InterviewSolution
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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.
| 801. |
For the reaction `N_(2)O_(5) rarr 2NO_(2) + (1)/(2) O_(2)`, the rate of disappearance of `N_(2)O_(5)` is `6.25 xx 10^(-3) "mol L"^(-1) s^(-1)`. The rate of formation of `NO_(2)` and `O_(2)` will be respectively.A. `6.25xx10^(-3)mol L^(-1)S^(-1) and 6.25xx10^(-3)mol L^(-1)S^(-1)`B. `1.25xx10^(-3)mol L^(-1)S^(-1) and 3.125xx10^(-3)mol L^(-1)S^(-1)`andC. `6.25xx10^(-3)mol L^(-1)S^(-1) and 3.125xx10^(-3)mol L^(-1)S^(-1)`andD. `1.25xx10^(-3)mol L^(-1)S^(-1) and 6.25xx10^(-3)mol L^(-1)S^(-1)`and |
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Answer» Correct Answer - B Given `-(-d[N_(2)O_(5)])/(dt)=6.25xx10^(-3)molL^(-1)S^(-1)` For the reaction `N_(2)O_(5) to 2NO_(2)+(1)/(2)O_(2)` `(-d[N_(2)O_(5)])/(dt)=(1)/(2)(d[NO_(2)])/(dt)=(2d[O_(2)])/(dt)` `therefore (d[NO_(2)])/(dt)=-(2d[N_(2)O_(5)])/(dt)=1.25xx10^(-2)molL^(-1)S^(-)` `therefore (d[O_(2)])/(dt)=-(1)/(2)(d[N_(2)O_(5)])/(dt)` `=3.12510^(-3)molL^(-1)S^(-1)` |
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| 802. |
Non–symbiotic nitrogen fixing bacteria :A. RhizobiumB. AzospiriliumC. AzotobacterD. Nitrosomonas |
| Answer» Correct Answer - C | |
| 803. |
If `CO_(2)` is absent in the atmosphere of earth, thenA. Temperature will decreaseB. Temperature will increaseC. Plants will flourish wellD. No effect |
| Answer» Correct Answer - A | |
| 804. |
Extrastelar secondary growth takes place by :A. Vascular cambiumB. PhellogenC. PhellemD. Phelloderm |
| Answer» Correct Answer - B | |
| 805. |
Coconut milk factor isA. An auxinB. A gibberellinC. Abscissic acidD. Cytokinin |
| Answer» Correct Answer - D | |
| 806. |
Maximum oxidation state will be of :A. LaB. GdC. EuD. Am |
| Answer» Correct Answer - D | |
| 807. |
In the Schottky defect:A. Same number of cation and decrease in anionsB. Cations and anions are replaces from their sitesC. Maximum number of cations and anions are sameD. None |
| Answer» Correct Answer - A | |
| 808. |
In steam distillation of toluene , the pressure of toluene in vapour isA. Equal pressure of barometerB. Less than pressure of barometerC. Equal to vapour pressure to toluene in simple distillationD. More than vapour pressure of toluene in simple distillation |
| Answer» Correct Answer - B | |
| 809. |
`-oversetoverset(O)(||)C-ddotNH`-(peptide bond ) which statement is incorrect about peptide bond : -A. C–N bond length in protiens is longer than usual bond length of N-bondB. Spectroscopic analysis show planar structure of `-undersetunderset(O)(||)C-NH-` groupC. C–N bond length in proteins is smaller than usual bond length of C–N bondD. None of above |
| Answer» Correct Answer - A | |
| 810. |
Which of following is correct : -A. Any aldehyde gives secondary alcohol on reductionB. Reaction of vegetable oil with `H_2SO_4` give glycerinC. `C_2H_5OH`, iodine with NaOH gives iodoformD. Sucrose on reaction with NaCl give invert sugar |
| Answer» Correct Answer - C | |
| 811. |
Which is correct statement?A. Starch is polymer of `alpha`-glucoseB. Amylose is a component of celluloseC. Proteins are composed of only one type of amino acidD. In cyclic structure of fructose, there are four carbons and one oxygen atom |
| Answer» Correct Answer - A | |
| 812. |
Which one the following is correct about `H-` bonding in nucleotides?A. A–T G–CB. A–G T–CC. G–T A–CD. A–A T–T |
| Answer» Correct Answer - A | |
| 813. |
After ovulation follicles converted into :-A. Corpus luteumB. Corpus albicansC. Corpus cavernosaD. Corpus calosum |
| Answer» Correct Answer - A | |
| 814. |
Green house effect isA. Gardening outside the houseB. Global coolingC. Global warmingD. Green colour house |
| Answer» Correct Answer - C | |
| 815. |
What is vaccineA. Treated bacteria, virus & proteinB. Treated algaeC. Treated fungiD. Treated plasmodium |
| Answer» Correct Answer - A | |
| 816. |
What will happen if the number of organism increased at a place:-A. Inter species competitionB. Intra species competitionC. BothD. None |
| Answer» Correct Answer - C | |
| 817. |
Trichoderma harizianum has proved to be a useful microorganism forA. gene transfer in higher plantsB. biological control of soil-borne plant pathogensC. bioremediation of contaminated soilsD. reclamation of wastelands |
| Answer» Correct Answer - B | |
| 818. |
What is correct to say about the hormone action in humans ?A. In females, FSH first binds with specific receptors on ovarian cell membraneB. FSH stimulates the secretion of estrogen and progesteroneC. Glucagon is secreted by `beta`- cells of islets of langerhans and stimulates glycogenolysisD. Secretion of thymosins is stimulated with aging |
| Answer» Correct Answer - A | |
| 819. |
Effect of light and dark rhythm on plants :A. PhotonastyB. PhototropismC. PhotoperiodismD. Photomorphogenesis |
| Answer» Correct Answer - C | |
| 820. |
The embryo in sunflower hasA. Two cotyledonsB. One cotyledonsC. Eight cotyledonsD. Cotyledons absent |
| Answer» Correct Answer - A | |
| 821. |
Which of the following will give maximum number of isomer ?A. `[Co(NH_3)_4Cl_2]`B. `[Ni(en)(NH_3)_4]^(+2)`C. `[Ni(C_2O_4)(en)_2]^(-2)`D. `[Cr(SCN)_2(NH_3)_4]^+` |
| Answer» Correct Answer - D | |
| 822. |
Correct order of 1st ionisationpotential (IP) among following elements Be, B, C, N, O isA. B lt Be lt C lt O lt NB. B lt Be lt C lt N lt OC. Be lt B lt C lt N lt OD. Be lt B lt C lt O lt N |
| Answer» Correct Answer - A | |
| 823. |
Which of the following statement is not correct?A. `La(OH)_3` is less basic than `La(OH)_3`B. In Lanthanide series ionic radius of `Ln^(+3)` ions decreasesC. La is actually an element of transition series rather LanthanideD. Aomic radius of Zr and Hf are same because of Lanthanide contraction |
| Answer» Correct Answer - A | |
| 824. |
In which of the following bond angle is maximumA. `NH_3`B. `NH_4^+`C. `PCl_3`D. `SCl_2` |
| Answer» Correct Answer - B | |
| 825. |
Which of the following two species in the pair are isostructural : -A. `XeF_2 , IF_2^-`B. `NH_3, BF_3`C. `CO_3^(-2), SO_3^(-2)`D. `PCl_5, IC l_5` |
| Answer» Correct Answer - A | |
| 826. |
Among the following the pair in which the two species are not isostructural isA. `IO_3^-` and `XeO_3`B. `BH_4^-` and `NH_4^+`C. `PF_6^-` and `SF_6`D. `SiF_4` and `SF_4` |
| Answer» Correct Answer - D | |
| 827. |
The rate of first-order reaction is `1.5 xx 10^(-2) M "min"^(-1)` at `0.5 M` concentration of reactant. The half-life of reaction isA. 23. 1minB. 8.73 minC. 7.53 minD. 0.383 min |
| Answer» Correct Answer - A | |
| 828. |
Copper sulphate dissolved in excess of KCN to give:-A. CuCNB. `[Cu(CN)_(4)]^(3–)`C. ` [Cu(CN)_(4)]^(2–) `D. `Cu(CN)_(2)` |
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Answer» Correct Answer - B `2KCN+CuSO_(4)+CU(CN)_(2)` `Cu(CN)_(2)toCuCN+(CN)_(2) "unstable"` `CuCN+3KCNtoK_(3)[Cu(CN)_(4)]i.e.[Cu(CN)_(4)]^(3-)` |
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| 829. |
An increase in equivalent conductance of a strong electrolyte with dilution is mainly due to:A. increase in ionic mobility of ionsB. 100% ionization of electrolyte at normal dilutionC. increase in both i.e. number of ions and ionic mobility of ionsD. increase in number of ions |
| Answer» Correct Answer - A | |
| 830. |
An electron is accelerated through a potential difference of `10,000V`. Its de Broglie wavelength is, (nearly): `(me=9xx10^(-31)kg)`A. 12.2nmB. `12.2xx10^(-13)m`C. `12.2xx10^(-12)m`D. `12.2xx10^(-14)m` |
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Answer» Correct Answer - C be Broglie wave length of electron `(lambda_(e))=(12.27)sqrt(v)A^(@)` `v=` accelerating voltage `lambda_(e)=(12.27)/sqrt(10000)xx10^(-10)m` `lambda_(e)=12.2xx10^(-12)m` |
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| 831. |
The correct order of increasig `C-O` bond length of `CO, CO_(3)^(2-), CO_(2)` isA. `CO lt CO_(2) lt CO_(3)^(2-)`B. `CO_(2) lt CO_(3)^(2-) lt CO`C. `CO lt CO_(3)^(2-) lt CO_(2)`D. `CO_(3)^(2-) lt CO_(2) lt CO` |
| Answer» Correct Answer - A | |
| 832. |
For a satellite moving in an orbit around the earth, ratio of kinetic energy to potential energy isA. `(1)/(sqrt(2))`B. `2`C. `sqrt(2)`D. `(1)/(2)` |
| Answer» Correct Answer - D | |
| 833. |
Which of the following processes is reversible?A. Transfer of heat by radiationB. Tranfer of heat by condutionC. Isothermal compressionD. Electrical heating of a nichrome wire |
| Answer» Correct Answer - C | |
| 834. |
Zener diode is used forA. RectificationB. StabilisationC. AmplificationD. Producing oscillations in an oscillator |
| Answer» Correct Answer - B | |
| 835. |
Two bulbs of (40 W, 200 V) and (100 W, 200 V). Then correct relation for their resistance:A. `R_(40) lt R_(100)`B. `R_(4) gt R_(100)`C. `R_(40) = R_(100)`D. Non relation can be predicted |
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Answer» Correct Answer - B `P = (V^(2))/(R ), P prop (1)/(R )` i.e., `R_(40) gt R_(100)` |
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| 836. |
Which one of the following statement is correct ?A. Malignant tumours may exhibit metastasisB. Patients who have undergone surgery are given cannabinoids to relieve pain.C. Benign tumours show the property of metastasisD. Heroin accelerates body functions |
| Answer» Correct Answer - 1 | |
| 837. |
A bomb of mass `30 kg` at rest explodes into two pieces of mass `18 kg` and `12 kg`. The velocity of mass `18 kg is 6 m//s`. The kinetic energy of the other mass isA. 524 JB. 256JC. 486 JD. 324J |
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Answer» Correct Answer - C `KE =(P^(2))/(2m)=((18xx6)^(2))/(2xx12)=486J` |
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| 838. |
The nuclei of which one of the following pairs of nuclei are isotons ?A. `""_(34)S^(74), ""_(31)Ga^(71)`B. `""_(38)Sr^(84) , ""_(38)Sr^(86)`C. `""_(42)Mo^(92) , ""_(40)Zr^(92)`D. `""_(20)Ca^(40), ""_(16)S^(32)` |
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Answer» Correct Answer - A Isotones `to` Number of neutrons are same . |
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| 839. |
the circular motion of a particle with constant speed isA. Periodic and simple harmonicB. Simple harmonic but not periodicC. Neither periodic nor simple harmonicD. Periodic but not simple harmonic |
| Answer» Correct Answer - D | |
| 840. |
Fission of nuclei is possible because the binding energy per nuclei in themA. Decreases with mass number at low mass numbersB. Increases with mass number at low mass numbersC. Decreases with mass number at high mass numbersD. Increases with mass number at high mass numbers |
| Answer» Correct Answer - C | |
| 841. |
Choose the only false statement form the followingA. The resistivity of a semiconductor increases with increase in temperatureB. Substances with energy gap of the order of 10eV are insulators.C. In conductors the valence and conduction bands may over lapD. The conductivity of a semiconductor increases with increases in temperature. |
| Answer» Correct Answer - A | |
| 842. |
A drum of radius R and mass M, rolls down without slipping along an inclined plane of angle `theta`. The frictional force-A. Decreases the rotational and translational motionB. Dissipates energy as heatC. Decreases the rotational motionD. Converts translational energy to rotational energy |
| Answer» Correct Answer - D | |
| 843. |
In an electrical circuit `R,L,C` and an `AC` voltage source are all connected in series. When `L` is removed from the circuit, the phase difference between the voltage and the current in the circuit is `pi//3`. If instead, `C` is removed from the circuit, difference the phase difference is again `pi//3`. The power factor of the circuit isA. 1B. `(sqrt(3))/(2)`C. `(1)/(2)`D. `(1)/(sqrt(2))` |
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Answer» Correct Answer - A It is the condition of resonance therefore phase difference between voltage and current is zero and power factor cos `phi=1` |
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| 844. |
The speed of light in media `M_1` and `M_2` are `1.5 xx 10^8 m//s and 2.0 xx 10^8 m//s` respectively. A ray of light enters from medium `M_1` to `M_2` at an incidence angle `i`. If the ray suffers total internal reflection, the value of `i` is.A. Equal to or less than `sin^(-1)((3)/(5))`B. Equal to or greater than `sin^(-1)((3)/(4))`C. less than `sin^(-1)((2)/(3))`D. Equal to `sin^(-1)((2)/(3))` |
| Answer» Correct Answer - B | |
| 845. |
The bond energies of `H--H` , `Br--Br` and `H--Br` are `433,, 192` and `364KJmol^(-1)` respectively. The `DeltaH^(@)` for the reaction `H_(2)(g)+Br_(2)(g)rarr2HBr(g)` isA. `+ 103 KJ`B. `+261kJ`C. `–103 kJ`D. `–261 kJ` |
| Answer» Correct Answer - C | |
| 846. |
At `27^(@)C` latent heat of fusion of a compount is 2930 j/mol. Entropy change is:A. 9.77 J/mol-KB. 10.77 J/mol-KC. 9.07 J/mol-KD. 0.977 J/mol-K |
| Answer» Correct Answer - A | |
| 847. |
The energy absorbed by each molecule `(A_2)` of a substance is `4.4 xx 10^-19 J` and bond energy per molecule is `4.0 xx 10^-19 J`. The kinetic energy of the molecule per atom will be.A. `4.0 xx 10^(-20)` JB. `2.0 xx 10^(-10)J`C. `2.2 xx 10^(-19)` JD. `4 xx 10^(-19)` J |
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Answer» Correct Answer - B `KE=4.4xx10^(-19)-4.0xx10^(-19)` KE/ molecule `=0.4xx10^(19)` `KE//"atom"=(0.4xx10^(19))/(2)` `=2xx10^(-20)J` |
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| 848. |
The number of `ATP` molecules produced in the lipid metabolism of a molecules of palmitic acid isA. 56B. 36C. 130D. 86 |
| Answer» Correct Answer - C | |
| 849. |
From the oxidation of one molecule of palmitic acid (fatty acid), the number of ATP molecules gained areA. 129 ATPB. 132 ATPC. 36 ATPD. 76 ATP |
| Answer» Correct Answer - A | |
| 850. |
Which one of the following is a matching pair of a body feature and the animal possessing it?A. Ventral heart – ScorpionB. Post-anal tail – OctopusC. Ventral central – Leech nervous systemD. Pharyngeal gill slits – Chamaeleon Absent in embryo |
| Answer» Correct Answer - C | |