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(chatquestion)...The solubility product constant of AgCN is 2.5 10 14. The acid dissociation constant of HCN is 6.2 x 10-". Now solid ABCN is dissolved in a buffer solution of pH 3. Answer the following questions : The concentration ratio of HCN to CN in the solution is (a) 6.25 x 10 (b)16 - 10 (e) 1.6 10 (d) 6.2 - 10...(Photo from TV)

asked Jul 13, 2020 by 959363914

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(chatquestion)...In Amplitudo modulotion, sin usoidel earoier fauguency Gsed is donetp by le Rnd tue frequency i's denoted Dn The båndwid th CAwh) of Hee rignal th in such Hiat som<coe which of

asked Jul 13, 2020 by 1185198745

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(chatquestion)...An electron beam is accelerated by a potential difference V to hit a metallic target to produce X-ray. It produces continuous as well as characteristic X-rays. If 2min is the smallest possible wavelength of X-ray in the spectrum, the variation of log Amin with log V is correctly represented in - Q.21 log Amin log Amin (1) (2) log V log V Activate Windows Go to Settings to activate Windows.

asked Jul 13, 2020 by 1116882826

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(chatquestion)...Some energy levels of a molecule are shown in the figure. The ratio of the wavelength r= M, is given by - Q.25 - E 3 - 2 E - 3 E 4 (1) r = 3 (2) r= 3 3 (3) r= 4 1 (4) r= 3

asked Jul 13, 2020 by 1240774944

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(chatquestion)...A radioactive nucleus A with a half life T, decays into a nucleus B. At t = 0, there is no nucleus B. At sometime t, the ratio of the number of B to that of A is 0.3. Then, t is given by - T log2 2 log1.3 Q.26 (1)t= (2) t D T. log1.3 (3) t= T log (1.3) (4) t = log 2 log(1.3)

asked Jul 13, 2020 by 1116882826

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(chatquestion)...Q.2 A body is thrown vertically upwards. Which one of the following graphs correctly represent the velocity vs time? (1) (2) (3) (4)

asked Jul 12, 2020 by 1146354659

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(chatquestion)...Q.6 SINGLE CHOICE Which of the following option is correct regarding the structure of borax? A Two triangular and two tetrahedral units Correct Answer Three triangular and one tetrahedral units C All tetrahedral units Your Answer D All triangular units

asked Jul 12, 2020 by 836377003

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(chatquestion)...Q.25 SINGLE CHOICE CH3OCH2CH2CH,OCH,CH3 is A Ethylmethylpropyl diether Your Answer Ethylmethoxypropyl ether C 3-Ethoxy-1-methoxypropane D 1-Ethoxy-3-methoxypropane Correct Answer EXPLANATION

asked Jul 12, 2020 by 836377003

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(chatquestion)...An ellipse, with foci at (0, 2) and (0, -2) and minor axis of length 4, passes through which of the following points ? Q.18 (1) (2, 2) (2) (2, 2/2 ) (3) ( 2, 2) (4) (1, 2/2 )

asked Jul 12, 2020 by 1116882826

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(chatquestion)...2z -n Q.25 Let z e C with Im(z) = 10 and it satisfies = 2i – 1 for some natural number n. Then: 2z +n (1) n= 20 and Re(z) =-10 (3) n=40 and Re(z) =-10 (2) n = 40 and Re(z) = 10 (4) n 20 and Re(z) = 10

asked Jul 12, 2020 by 1240774944

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(chatquestion)...Let f(x) 5 - x - 2| and g(x) (х- 1(х? - 5х + 6) Q.26 = |x + 1, x e R. If f(x) attains minimum value at B, then lim x-aß is equal to : x* - бх +8 (1) 1 (2) 2 (3) (4) 2 2 2

asked Jul 12, 2020 by 1185198745

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(chatquestion)...Q.17 A group of students comprises of 5 boys and n girls. If the number of ways, in which a team of 3 students can randomly be selected from this group such that there is at least one boy and at least one girl in each team, is 1750, then n is equal to : (1) 24 (2) 25 (3) 27 (4) 28

asked Jul 12, 2020 by 1116882826

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(chatquestion)...Q.19 For an initial screening of an admission test, a candidate is given fifty problems to solve. If the probability that the candidate solve any problem is 4 then the probability that he is unable to solve less than two problems is : 48 48 164 (1 (1) 316 4 49 49 25(5 201 1 (3) 54 (4) 5 5 25 5

asked Jul 12, 2020 by 1240774944

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(chatquestion)...At 30 m from a line source the loudness of sound is 50 dB. At 15 m from the source, the loudness level is (1) 56 dB (2) 53 dB (3) 50 dB (4) 47 dB

asked Jul 11, 2020 by 1029628805

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(chatquestion)...(O Figure below shows various stages, A - F in meiosis. В E F () Arrage the stages of meiosis, A -F shown in figure above according to the correct sequence. (1 mar

asked Jul 11, 2020 by 796279193

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(chatquestion)...A charge Q is distributed over three concentric spherical shells of radii a, b, c (a <b< c) such that their surface charge densities are equal to one another. The total potential ot a point at distance r from their common centre, where r < a, would be Q ab+bc+ca (a) 4tE,(a+b+c) (b) 12TEO abc Q(a² +b² +c) Qla +b+c) (c) 4TE (a²+b²+c²) (January 2019)

asked Jul 11, 2020 by 736563939

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(chatquestion)...' If A= -4 -3 then adj (342 + 124) is equal to 51 63 (a) 51 84 84 72 (b) 63 72 72 -63 (d) 72 -63 (c) -84 51 -84 51

asked Jul 11, 2020 by 736563939

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(chatquestion)...8. Two electric dipoles, A, B with respective dipole moments d=-4qai and d =-2qai are placed on the x-axis with a separation R, as shown in the figure R+ B A The distance from A at which both of them produce the same potential is R R (a) 2-1 (b) 2+1 V2R (c) 2+1 VZR (d) 2-1 (January 2019)

asked Jul 11, 2020 by 736563939

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(chatquestion)...If the system of linear equations :x+ay +z 3,x+2y+2z 6, x+Sy+3z =b has no solution, then (b) a-1, b-9 (d) a=-1,b#9 (Online 2018) (a) a -1, b= 9 (c) a 1, b# 9

asked Jul 11, 2020 by 736563939

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(chatquestion)...(b) Starting with a fertilised egg (zygote), a series of five cell divisions would produce an early embryo with how many cells? (1 mark)

asked Jul 11, 2020 by 796279193

1 answer

(chatquestion)...to the line 2r +3y- 40 = 0, (b) the perpendicular distance of A from the line 2r + 3y - 40 = 0. (2i -j) = 0. 4. Find the reflection of the point A(3, 1) in the line L with equationr. (i-j)- 2=0. Use your answer to find the reflection in L of the line r. 5. Find the ratio in which the join of the points A(12,-5) and B(3,4) is cut by the line r (3i 1lj) externally in the same ratio is perpendicular to the line r- (3i - 11j) = 0. 0. Show that the line joining the origin to the point dividing AB...(Can someone help me with question 4)

asked Jul 10, 2020 by 788893523

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(chatquestion)...2. 125 water droplets, each of radius r, coalesce to form a single drop. The energy released raises the temperature of the drop. If o represents surface tension, p represents density, S represents specific heat and J represents mechanical equivalent of heat, then the rise in temperature of the drop is: 120 120 (B) 7JRS 20p (C) Spr (D) zero (A) 5JrpS...(someone help me with this)

asked Jul 10, 2020 by 951396224

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(chatquestion)...If a, b and c are three mutually perpendicular unit vectors and d is a unit vector which makes equal angles with a, b and c, then find the value of Ia +b+c+d P.

asked Jul 10, 2020 by 736563939

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(chatquestion)...Three capacitors each of capacitance C = 2 µF are connected with a battery of emf 30 V as shown in the figure. When the switch S is closed, the heat generated in the circuit will be S C 30 V...(Ans-0.3mJ)

asked Jul 9, 2020 by 917681912

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(chatquestion)...9:04 O H+ 40 KB/s Your Doubt Na/THF/CH,OH (1) Ph-C C-Ph -60°C The major products are (a) Ph (b) Ph Ph Ph (c) Ph-CH2-CH2-Ph (d) Ph. Ph Ph Ph

asked Jul 9, 2020 by 570476669

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(chatquestion)...QUESTION 6 • 2006 Figure shows several stages of cell division in an organism. A C (a) Classify the stages above based on the stage of cell division. (2 marks)...(Help)

asked Jul 9, 2020 by 796279193

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(chatquestion)...Let A, B and C be sets such that o ABCC. Then which of the following statements is not true ? (1) If (A- B) C, then ACC. (3) (CUA) (CU B) = C (2) BOC ± ¢ (4) If (A - C)C B, then ACB

asked Jul 9, 2020 by 1116882826

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(chatquestion)...Q.9 If a, B and y are three consecutive terms of a non-constant G.P. such that the equations ax+ 2Bx +y=0 and %3D x² + x - 1 = 0 have a common root, then oa(B+Y) is equal to : (1) αγ (2) 0 (3) aß (4) BY

asked Jul 9, 2020 by 1240774944

1 answer

(chatquestion)...The length of the perpendicular drawn from the point (2, 1, 4) to the plane containing the lines T =(i+}) + a(i+2j-k) and r =(i+j)+µ(-i+j-2k ) is : %3D (1) 1 (2) (3) 3 (4) V3

asked Jul 9, 2020 by 1185198745

1 answer

(chatquestion)...13. 10. Configurations of the two centres in the following molecule are : ÇOOH 9/34 H- -Br -CN (1) (2R, 3S) (3) (2S, 3S) (2) (2R, 3R) (4) (2S, 3R)

asked Jul 8, 2020 by 1029628805

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(chatquestion)...A ball is projected with speed 20/2 ms -1 at an angle of 45° above the horizontal. The angular velocity of the ball, when it is at its highest point of journey, about point of projection is 0.4 rad/s A 0.3 rad/s Correct Answer 0.2 rad/s C 0.1 rad/s D

asked Jul 7, 2020 by 708764819

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(chatquestion)...A transparent solid cylindrical rod has a refractive index of 2/V3. It is surrounded by air. A light ray is incident at the midpoint of one end of the rod as shown in the figure. The incident angle 0 for which the light ray grazes along the wall of the rod is : 1 sin-1 (1/2) 2 sin-1 (v2/2) 3 sin-1 (2/v3) 4 sin-1 (1/v3)

asked Jul 6, 2020 by 708764819

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(chatquestion)...27. A train starts from a station and stops at another in 4 minutes. The maximum velocity attainedais 72 kmph. The distance travelled with uniform velocity, assuming accelera- Cs tion, reterdation of the frain to be numerically equal, is . 1) 4-8 km 4) 3-6 km 2) 4-2 km 3) 4.0 km

asked Jul 6, 2020 by 1051790812

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(chatquestion)...30. The engine of a train moving with uniform.acceleration passes an electric pole with a velocity u and the last compartment with à velocity V, the length of train that has V+u passed the pole when the velocity is if the total length of the train is I 2. CSKECanned 3 4 with CamScanng I(V + u) 4) 2) : 4(V – u) 4(V + u)

asked Jul 6, 2020 by 1051790812

1 answer

(chatquestion)...O HD 4G4 0 8:59 Your Doubt The major product of the following reaction is Br NaBH MeOH, 25°C OH Br (1) OMe OMe (4) (3)

asked Jul 5, 2020 by 570476669

1 answer

(chatquestion)...By aerobic respiration of 1 molecules of PGAL how many ATP get synthesized considering glycerol phosphate shuttle? (1) 8 ATP (2) 2 ATP (3) 19 ATP (4) 36 ATP

asked Jul 5, 2020 by 845909505

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(chatquestion)...The half life of a seadioactHuo nucleus" is 50 intervals days. Ae time 15. (to-1) beto een the timo 止 has deeojed when of and the time t when 1 of it ha oft ha decoyed is

asked Jul 5, 2020 by 1116882826

1 answer

(chatquestion)...The moment ofnoutia of a uniform cireulevi dlise is manimen exepst awis peupendi'alar and possing thaOyh about an to the cusc B

asked Jul 5, 2020 by 1240774944

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(chatquestion)...Two metallic spheres of radii 1 cm and 3 cm are given charges of-1 × 10 C and 5 × 10 C, respectively. If these are connected by a conducting wire, the final charge on the bigger sphere is - (1) 3 x 102 C (3) 1 × 10² C (2) 4 x 10- C (4) 2 x 10C

asked Jul 5, 2020 by 1185198745

1 answer

(chatquestion)...3. Area bounded by the curve y = | x-2 and y =1-|x-1| is equal to (a) 4 sq. units (b) 6 sq. units (c) 2 sq. units (d) 8 sq. units 4. Area bounded by y tan lx, y = cotx and y-axis is equal to (a) In 2 units (b) In 4 (d) In 2 sq. units sq. sq. units (c) In 8 sq. units...(somebody pls solve these two questions)

asked Jul 5, 2020 by 951396224

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(chatquestion)...Illustration 2.5 Two sources S and S, emitting light of wavelength 600 nm are placed a distance 1.0x 10 cm apart. A detector can be moved on the line S,P which is perpendicular to S,S2 a. What would be the minimum and maximum path difference at the detector as it moves along the line S,P? b. Locate the position of the farthest minima detected.

asked Jul 3, 2020 by 736563939

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(chatquestion)...-2 In the reaction, P2H4– → PH3 + P4H2 the equivalent mass of P2H4 may be given as - 12m (4) 13 3m (1) 4. 5m (2) 6. 3m (3)...(Photo from Sumit Debnath

asked Jul 3, 2020 by 619669533

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(chatquestion)...+3 Fe$2 + O2 Fe2O3+ SO2 (If M is mol.wt of FeS2). Equivalent weight of Je Fe 2 FeS2 will be - (1) M/9 (2) M/7 (4) M/11 (3) M/10...(Photo from Sumit Debnath

asked Jul 2, 2020 by 619669533

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(chatquestion)...welders wear Specil goggles with face.masks to protect their eye from electnigonetie. radiatta Name the radiation cand casite ther glass window the sange of frequenyye

asked Jul 2, 2020 by 1185198745

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(chatquestion)...Data Paga. achbily of ladidackiue fubstance faginem usite Define the ts SII units.

asked Jul 2, 2020 by 1240774944

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(chatquestion)...mutual înductan How does the of a pair of coil chouge When D dlistounce of furn in the coit olecreasede is -Ce Luren

asked Jul 2, 2020 by 1116882826

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(chatquestion)...ding Chemistry 101. The empirical formula of a non-electrolyte is CH,0. A solution containing 3 g of the compound exerts the same osmotic pressure as that of 0.05 M glucose solution. The molecular formula of the compound is Sol Bour 109.1 g of a mass 25 the free 5.12 k lower (a) CH,O (c) CHO (b) C,H,O, (d) C,H,O, of (a) (Karnataka CET) 10 The...(Ye question koi explain kardo please

asked Jul 2, 2020 by 829580964

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(chatquestion)...Fralmake: [ eæ cos2x+25in

asked Jul 1, 2020 by 1116882826

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(chatquestion)...Date. Paga. Ifis the Angle blo two veator sin .

asked Jul 1, 2020 by 1240774944

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(chatquestion)...Find the in tervals in which the function fcre) = xt 33-5x2 f ce) e4_33=520e bef 7242+12 is . strictly inéreesing O stoictty deese

asked Jul 1, 2020 by 1185198745

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