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(chatquestion)...15.4K/s L Jt 4G VOLTE 4:09 PM 42% ECOSYSTEM Too Fast Correct 67% students got it right Q.4/20 00:00:06 Single Choice. Largest ecosystem of the world are Grasslands Great lakes Oceans Forests Solution Report an Error Continue II

asked Jan 26, 2020 by balaji.thirumalai

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(chatquestion)...10 *210+y-pufin@ (1on4)ty=a 3. =?500 100 204 t 200 I2500 330

asked Jan 26, 2020 by balaji.thirumalai

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(chatquestion)...5. The equation of the straight lines which are both tangent and normal to the curve 27x? = 4y° are 1) x = ±V2 (y – 2) 2) x = +/3 (y - 2) X%= 3) x = t/2 (y-3) 4) x = ±/3 (y – 3)

asked Jan 26, 2020 by balaji.thirumalai

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(chatquestion)...Using the graph shown in the figure for stopping potential versus the incident frequency of photons, calculate Planck's constant. Delhi 2015 1.8+ 1.4+ 1.23- 0.8 0.4+ 5×10ʻHZ 246810 V (volts)

asked Jan 26, 2020 by balaji.thirumalai

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(chatquestion)...From a uniform disc of radius R and mass M, a square plate is removed as shown. What is the moment of inertia of remaining disc about an axis passing through the centre of disc and perpendicular to its plane? 3. MR2 (2) MR2 (1) Зл Зл MR? (2n- 1) (4) (3) MR2 (1+3n)

asked Jan 26, 2020 by balaji.thirumalai

1 answer

(chatquestion)...kg is raised to a height of makes a perfectly elastic collision with a 1 kg mass that is connected to the horizontal spring of spring cm. Find the value of x. constant 1.5 N/m. Maximum compression in spring is m. llelle A wedge A of mass 1kg is held at rest on the smooth incline plane of inclination 60° from the horizontal by an stopper P. A bullet B of mass 500 grams, travelling horizontally with 90 m/s strikes the wedge as shown. Assuming all the impacts are perfectly inelastic and duration.of impact is negligible. Find the velocity in m/s with which the wedge moves up the incline just after collision. 39. B. 006 o09 Reg. & Corp. Office : CG Tower, A-46 & 52, IPIA, Near City Mall, Jhalawar Road, Kota (Raj)-324005 Reson aNce webeite www.resonance ac in E-mail: contact@resonance ac in Toll Free 1800 258 5555 | CIN: U80302R 120070 Educating for better tomorrow

asked Jan 26, 2020 by balaji.thirumalai

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(chatquestion)...Он ОН ОН ОН OCH3 95. OCH3 OCH3 (R) (S) (Q) (P) (a) P>Q>R>S (b) S>R>Q>P(c) S>R>P>Q (d) Q>S> R >P

asked Jan 26, 2020 by balaji.thirumalai

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(chatquestion)...K=1 22R1M Assignsient O PA the moment of lnertial of a solid. is qulen os I = SMR, Ahat is the radius oF qyration. Ell e calaulate the radius of qyration of Circular disk ***** axis along sphoe Hhe d'am eter

asked Jan 26, 2020 by balaji.thirumalai

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(chatquestion)...8. The equation of an equipotential line in an electric field is y = x. The electric field vector at a point (2, 2) may be (2) 2î +3ĵ (1) î+j (4) î +2j (3) 2î-2j

asked Jan 26, 2020 by balaji.thirumalai

1 answer

(chatquestion)...A curve with equation of the form y=ax*+bx' +cx+d has zero gradient at the point (0,1) and also touches the x-axis at the point (-1, 0) then the values of the x for which the curve has a negative gradient are : 1) x>-1 2) x<1 3) x<-1 4) -1<x<1

asked Jan 26, 2020 by balaji.thirumalai

1 answer

(chatquestion)...10. A hollow metal tube as shown in the figure has a charge at its centre. If electric flux through any plane surface is o, then flux through the curved surfaces is given by .A A- 7. Qo (1) Qo (2) -20 03 Оз 1 Qo Qo - 30 (4) ф (3) 3. 03

asked Jan 26, 2020 by balaji.thirumalai

1 answer

(chatquestion)...30. In the circuit shown the energy stored in the capacitor at steady state is %3D www www 20 V 22 (2) 320 µJ (1) 640 µJ (4) 2560 µJ (3) 1280 µJ

asked Jan 26, 2020 by balaji.thirumalai

1 answer

(chatquestion)...36. The Okazaki fragments in DNA chaln [CBSE AIPMT 20071 growth ya) result in transcription (b) polymerise in the 3' to 5' direction and forms ssor replication fork (c) prove semi-conservative nature of DNA replication (d) polymerise in the 5' to 3' direction and explain 3 to 5' DNA replication ob and 2010]

asked Jan 26, 2020 by balaji.thirumalai

1 answer

(chatquestion)...D.C. motor run by 120V. If armature current at e 115V is 10 A, then find out current just after %3D motor is started :- [RPMT 2006] (1) 240 A (2) 230A (3) 120 A (4) 400 A 6:

asked Jan 26, 2020 by balaji.thirumalai

1 answer

(chatquestion)...If V = 100 sin 100 t volt and I = 100 sin (100 t + mA for an A.C. circuit then find out (a) phase difference between V and I (b) total impedance, reactance, resistance (c) power factor and power dissipated (d) components contains by circuits

asked Jan 26, 2020 by balaji.thirumalai

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(chatquestion)...TIIU ValuUS UI X alU A are uOubled and then interchanged. What would be the new position of balance point? b) If the galvanometer and battery are interchanged at the balance position, how will the balance point get affected? Or Find the equivalent resistance between A and B as shown in figure. .A 302 One billion electrons pass from a point A towards a point B in 104 s. What is the c milliamperes? What is its direction? 4. Or A cylindrical metallic wire is stretched to increase its length by 5%. Calculate the r

asked Jan 26, 2020 by balaji.thirumalai

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(chatquestion)...Anhyd. AICI, + HCN + HCl Benzene

asked Jan 26, 2020 by balaji.thirumalai

1 answer

(chatquestion)...1. If two forces act in opposite direction then their resultant is 10N and if they act mutually perpendicular f their resultant is 50N. Find the magnitudes of both the forces. Let a m • COS a レ2。 If a-6= 2 then calculate the value of â+ /36. • COS レ If A = 3î + 2j and B= 2î + 3j -k, then find a unit vector along (A-B). COs a find the magnitude of subtraction of these unit vecto Putti

asked Jan 26, 2020 by balaji.thirumalai

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(chatquestion)...リフン If the tangent to the curve x=1-3t, y=t– 3t at the point P(-2,2) meets the 56. 46. P and again at Q, the angle between the tangents at P andQ is respe curve 1)4 4) 2 3) 2) 4 6. The r 57. sgole ol ド|3

asked Jan 26, 2020 by balaji.thirumalai

1 answer

(chatquestion)...42. If the chord joining the points where x = p, x = q on the curve y = ax2 + bx +c is parallel to the tangent drawn to the curve at(a, B) then a = p+q 1) 2pg 2) pg p-q 3) 4)

asked Jan 26, 2020 by balaji.thirumalai

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(chatquestion)...The equation of the straight lines which are both tangent and normal to the curve 27x = 4y are 45. 1) 2) x = tv3 (y-2) orhot 4) x = +v3 (y - 3) 1) x = ±V2 (y- 2) 55. If 3) x = t/2 (y- 3) = ±V

asked Jan 26, 2020 by balaji.thirumalai

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(chatquestion)...44. If the curve y= px² +qx+r passes through the point (1, 2) and the line be y = x touche it at the origin, then the values of p, q and r are 1) p=1,q=-1,r=0 2) p=1,q=1,r= 0 3) p=-1,q=1,r=0 4) p=1,q=2,r=3

asked Jan 26, 2020 by balaji.thirumalai

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(chatquestion)...A curve with equation of the form y= ax* +bx' +cx+d has zero gradient at the point (0,1) and also touches the x-axis at the point (-1, 0) then the values of the x for which the curve has a negative gradient are : 43. 1) x>-1 2) x <1 3) x<-1 4) -1<x<1

asked Jan 26, 2020 by balaji.thirumalai

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(chatquestion)...29. The correct stability order of the following resonance structures is : H2C-N=N H, C-N=N H2C-N=N H,C=N=N (IV) (III) (II) (I) (b) I> III > II>IV (d) III>I>IV> II (a) I>II> IV> III (c) II>I> III > IV

asked Jan 26, 2020 by balaji.thirumalai

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(chatquestion)...7. In which of the following pairs of resonance contributors is the structure on the right a important contributor? (a) H-C=0; H-C=0; CH, =N=N (b) CH,-N=N (c) CH3-CH-OH CH3-CH OH (d) All of the above tham in

asked Jan 26, 2020 by balaji.thirumalai

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(chatquestion)...The de Broglie wavelength of electron of Het ion is 3.329Å. If the photon emitted upon de-excitation of this Het ion is made to hit H atom in its ground state so as to liberate electron from it, what will be the de Broglie's wavelength of photoelectron ? (A) 0.1518 Å (B) 6.1518 Å (C) 2.3518 Å (D) 4.1218 Å

asked Jan 25, 2020 by balaji.thirumalai

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(chatquestion)...(c) B203 and Cr(BO,)3 Borax is converted into crystalline boron by the following steps: A, B,03 B > Н,ВО3 Borax X and Y are respectively: (b) HCl, C (a) HCl, Mg (d) HCl, Al (c) C, Al The dissolution of Al(OH), by a solution of NaOH results in the formation of:

asked Jan 25, 2020 by balaji.thirumalai

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(chatquestion)...(1)2 J/s (4) 4 J/s (2) 1 J/s (3) 16 J/s 19 Two identical inductance carry currents that vary with time according to linear laws (as shown in figure). In which of two inductance is the self induction emf greater? (1) 1 (2) 2 (3) same (4) data are insufficient to decide 0. The emf acr esistance 100 at time t uch

asked Jan 25, 2020 by balaji.thirumalai

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(chatquestion)...14. A circuit is given in diagram. The energy stored in 2 µF capacitor at steady state is 12 Q 18 V 2 µF 120 (1) Zero (2) 9 µJ (3) 18 µJ (4) 36 µJ

asked Jan 25, 2020 by balaji.thirumalai

1 answer

(chatquestion)...liotar? 2R

asked Jan 25, 2020 by balaji.thirumalai

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(chatquestion)...32. Figure shows two concentric coplanar loops of radius r and R. A current / is passed through outer loop. The mutual inductance of arrangement is (r<< R) THor? (1) (2) THor? 4R (3) THR? 2r 2R

asked Jan 25, 2020 by balaji.thirumalai

1 answer

(chatquestion)...Correct order of stability of following canonical structures will be 48. OH CH3 CH, -C-NK О-Н CH3 b. CH3 -C- KCH, a. CH3 Он CH3 CH3 c. CH3 - Č = NK %3D (1) a > b > c (2) a > c > b (3) b > c > a (4) c > a > b

asked Jan 25, 2020 by balaji.thirumalai

1 answer

(chatquestion)...Example 17.64) A string fixed at both ends has consecutive standing wave modes for which the distances between adjacent nodes are 18 cm and 16 cm respectively. (i) What is the minimum possible length of the string? (ii) If the tension is 10 N and the linear mass density is 4 gm what is the fundamental frequency? Sol. (i) 16 cm n+1 loops n loops 18 cm Let / be the length of the string. Then ...(i) 18n =1 %3D ... (i) 16 (n + 1) = 1

asked Jan 25, 2020 by balaji.thirumalai

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(chatquestion)...46. / Which of the following order is correct for acidic strength of hydrogen in following molecule? н, Н.С CH3 Ho H) HH (1) a > b > c (2) b > a > c (3) b > c > a (4) c > b > a

asked Jan 25, 2020 by balaji.thirumalai

1 answer

(chatquestion)...29. An ideal gas is expanding such that PT = constant. The coefficient of volume expansion of the gas is 4 (2) PU-nRT (1) PT= CONL (3) (4) T. 2/7 1/7

asked Jan 25, 2020 by balaji.thirumalai

1 answer

(chatquestion)...27 When chlorobenzene reacts with sodium in presence of ether then the major product formed is (2) (1) (4)

asked Jan 25, 2020 by balaji.thirumalai

1 answer

(chatquestion)...36. The final product for the given reaction is CH3 -0-CH,CH, + HI (1) CH, - CH, -|+ CH,CH,OH (2) CH, -1+ CH, - CH, - OH (3) CH,I + CH, = CH, %3D (4) CH, - CH, -1+ HCHO

asked Jan 25, 2020 by balaji.thirumalai

1 answer

(chatquestion)...29 Consider the given reaction CI Anhyd -> FeBr, + Brz (minor) Imajor) Compounds A and B respectively are CI (1) and Br Br CI CI Br (2) and Br CI Br and (3) Br CI CI Br (4) and Br

asked Jan 25, 2020 by balaji.thirumalai

1 answer

(chatquestion)...(c) B,H, BX 3 + NH 3 T, BX, -NH, + Heat of adduct formation (AH) 12. 3. The numerical value of AH is found to be maximum for : (а) BFз (c) BB13 20. (b) BCl 3 (d) BI3 13. Which of the following properties describes the diagonal relationship between bo

asked Jan 25, 2020 by balaji.thirumalai

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(chatquestion)...A body of mass m is placed at rest on the earth which is rotating with angular velocity o about its axis. If radius of earth is R, the friction acting on body at a latitude of 53° is nearly (considering earth as non- inertial frame) (1) Zero 4mRo? (2) 25 058° 3mRo? (3) 25 12mRo? (4) 25

asked Jan 25, 2020 by balaji.thirumalai

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(chatquestion)...97. What is the major product of the following reaction? C N NAOH H,0 CH,- Br heat ОН (1) CH,Br wollot (2) CH,OH CHO, (3) "CH,OН но. (4) "CH,-он kash Fducational Se

asked Jan 25, 2020 by balaji.thirumalai

1 answer

(chatquestion)...A semicircular wire of charge q is placed in a x-y plane of radius R as given in the figure. An infinitely long line charge of linear density 2 is placed along Z-axis. Force acting on semicircular wire is 9. +. (2) 2nE,R (1) E0 R TC (4) 2nE, R (3) 4πε, R

asked Jan 25, 2020 by balaji.thirumalai

1 answer

(chatquestion)...A curve with equation of the form y= ax* +bx' +cx+d has zero gradient at the point (0,1) and also touches the x-axis at the point (-1, 0) then the values of the x for which the curve has a negative gradient are : 4) -1<x<1 3) x<-1 2) x<1 1) x>-1

asked Jan 25, 2020 by balaji.thirumalai

0 answers

(chatquestion)...D, 3%010:16 pm Һтс Q.16 hlhich weill Show GD D 2-metyl-2-bulre 2-butene la ê 2-nehy propere propere lase Far Pa 2 tre an s (

asked Jan 25, 2020 by balaji.thirumalai

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(chatquestion)...Intensity of an unpolarised wave is 40 W/m². It is passed through polariser. Find magnitude of electric field of the transmitted wave? (AIIMS-2016) (b) 86 N/C (a) 50 N/C (c) 100 N/C (d) 37 N/C

asked Jan 25, 2020 by balaji.thirumalai

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(chatquestion)...If the chord joining the points where x = p, x = q on the curve y = ax2 + bx +c is parallel to the tangent drawn to the curve at(a,B) then a = p-9 p+q 3) 2 2) Vpg 4) 1) 2pq

asked Jan 25, 2020 by balaji.thirumalai

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(chatquestion)...The equation of the straight lines which are both tangent and normal to the curve 27x = 4y are 45. 2) x = +/3 (y - 2) 1) x = ±v2 (y- 2) 4) x = ±/3 (y – 3) 3) x = ±/2 (y – 3) 46

asked Jan 25, 2020 by balaji.thirumalai

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(chatquestion)...= 100, VCE =4 V. V 1 V 33 In a given circuit B The Re is 5 kQ Rg 20 V (1) 594 Q (2) 584 kQ (3) 594 kQ (4) 584 Q 2.

asked Jan 25, 2020 by balaji.thirumalai

1 answer

(chatquestion)...Test 1 (Code A) 36. A In the given circuit, if charges in capacitors are 30. It is C2 (1 same then (2 (3 14 37. TH 4Ω 2Ω C2 R 10 V 3. (2) (1) 1 (4) 3. (3) (1) (3) Each of three bulbs having a same resistance can 31

asked Jan 25, 2020 by balaji.thirumalai

1 answer

(chatquestion)...A curve with equation of the form y= ax +bx' +cx+d has zero gradient at the point (0,1) and also touches the x-axis at the point (-1, 0) then the values of the x for which the curve has a negative gradient are : 43. 1) x>-1 2) x <1 3) х <-1 4) -15xS1

asked Jan 25, 2020 by balaji.thirumalai

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