Recent questions tagged other

(chatquestion)...Date Page sin(xta). COsn %3D

asked Mar 25, 2020 by balaji.thirumalai

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(chatquestion)...Three resistors of 4 2, 6 N and 12 2 are connected in parallel and the combination is connected in series with a 1.5 V battery of 1 N internal resistance. The rate of Joule heating in the 4 SN resistor is (Online May 12, 2012| (a) 0.55 W (b) 0.33 W (c) 0.25 W (d) 0.86 W

asked Mar 25, 2020 by balaji.thirumalai

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(chatquestion)...Date Page. -Cosan

asked Mar 25, 2020 by balaji.thirumalai

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(chatquestion)...= 3 Cosee.tam %3D 7 seen. cot1

asked Mar 25, 2020 by balaji.thirumalai

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(chatquestion)...G.1 46 18:56 86.9 Vo), 4Ga 24% KB/s LTÉ2 8) 1 point TIC4 P (major product) (CH)4-N-NEN Here the major product P is a. HN b. C. HN d.

asked Mar 25, 2020 by balaji.thirumalai

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(chatquestion)...Vo) 4Ga 24% LTÉ2 0.10 l 18:57 13) 1 point N3 Here the major product P will be b. C. d. 0= bo

asked Mar 25, 2020 by balaji.thirumalai

1 answer

(chatquestion)...G1 46 18:56 0.00 Vo), 4Ga 24% KB/s LTÉ2 10) 1 point Ph Me PPH3 P (Major product) `NO2 Here the major product P is. a. Me -Ph b. Ph Ph -Me d. Ph

asked Mar 25, 2020 by balaji.thirumalai

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(chatquestion)...x2 - 5x+ 4 <1 Solve : .2 x - 4 8. (1) (2) 0,- OC (3) (4) None of these 0,

asked Mar 25, 2020 by balaji.thirumalai

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(chatquestion)...x² -|x|-12 Solution set of 2 2x is X-3 (1) (-a,c) 12) (-, 3) (3) (3, c) (4) None of these

asked Mar 25, 2020 by balaji.thirumalai

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(chatquestion)...1 1 Solve: (x-2) (x+2) X. 2. VI

asked Mar 25, 2020 by balaji.thirumalai

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(chatquestion)...DA particle of mass m carrying a positive charge q moves simple harmonically along the x-axis under the action of a varying electric field E directed along the x-axis. The motion of the particle is confined between x = 0 and x = 21. The angular frequency of the motion is o. Then which of the following is correct? (1) Electric field right of x =l is towards left and to the left of x = l is towards right. (2) Electric field right of x=1 is towards right and to the left of x = l is towards left. 42 |3| %3D (3) Electric field to the right of origin is directed along the positive x-axis for all values of x. (4) Electric field to the right of origin is directed along the negative x-axis for all values of x.

asked Mar 25, 2020 by balaji.thirumalai

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(chatquestion)...1.46 Electrostatics and Current Electricity 28. Two pith balls each with mass m are 32. Three identical point q, hang from three st q in terms of m, L, an suspended from insulating threads. When the pith balls are given equal positive charge Q, they hang in equilibrium as shown. We now increase the charge on the left pith ball from Q to 2Q while leaving its mass essentially unchanged. 0 Which of the following diagrams best represents the new equilibrium configuration? (1) (2) +9 ゆ>0 (1) q=(16/5)TE 20 (2) q= J(16/15)t- 20 (4) (3) q = (15/16) (3) の>0 (4) none of these 33. A and B are two bisector, respectiv away from the d 20 fields at A and B 20 O ore placed (1) E, = E,

asked Mar 25, 2020 by balaji.thirumalai

1 answer

(chatquestion)...rganic compounds 27. Which of the following is not incorrect ? (a) BOD is similar in function to COD in that both measure the amount of organic compounds in water (b) COD involves oxidation of few organic compounds (c) BOD involves oxidation of almost all organic laesf compounds (d) All of the above

asked Mar 25, 2020 by balaji.thirumalai

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(chatquestion)...23. Dipole-induced dipole interactions are present in which of the following pairs (a) HCl and He atoms (b) SiF, and He atoms (c) H,O and alcohol (d) Cl, and CCl, (NEET 2013)...(Solution plz)

asked Mar 25, 2020 by balaji.thirumalai

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(chatquestion)...D-2. For following graphs of y = ax + bx + c with a, b, c e R, comment on the sign of: (i) a (ii) b (iii) c (iv) D (v) a + B (vi) aß Y4 У4 (1) (2) (3) х

asked Mar 25, 2020 by balaji.thirumalai

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(chatquestion)...27 Identify the correct order of solubility in aqueous medium [NEET-2013] (1) ZnS > Na,S > CuS (2) Na,S > CuS > ZnS (3) Na,S > ZnS > CuS (4) CuS > ZnS > Na,S

asked Mar 25, 2020 by balaji.thirumalai

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(chatquestion)...Consider f (x) =x² + bx + c. (aFind c if x = 0 is a root of f (x) = 0. C-8. (b) Find c if a, are roots of f (x) = 0. (c) Comment on sign of b & c, if a <0<B & IBI>|al, where a, B are roots of f (x)= 0.

asked Mar 25, 2020 by balaji.thirumalai

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(chatquestion)...61. Which of the following orders of ionic radii is correctly represented ? (1) H¯ > H* > H (2) Na* > F> 0²- (3) F> O2 > Na* (4) Alšt > Mg ²+ > N°-

asked Mar 25, 2020 by balaji.thirumalai

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(chatquestion)...THERMAL PHYSICS PHYSICS PARI -1V The process AB is shown in the diagram. As the gas is taken from A to B, its temperature (a) initially increases then decreases (b) initially decreases then increases (c) variation depends on type 2P remains constant (d) of gas 8. A barometer tube, containing mercury, is lowered in a vessel containing mercury until only 50 cm of the tube is above the level of mercury in the vessel. If the atmospheric pressure is 75 cm of mercury, what is the pressure at the top of the tube? (a) 33.3 kPa (b) 66.7 kPa (c) 3.33 MPa (c) 6.67 MPa One mole of a gas expands obeying the relation as shown in the P/V diagram. The maximum temperature in this process is equal to (Vo,Po) (2Vo.Po/2) P. V. ЗР. Vo 9P,Vo of these...(8th)

asked Mar 25, 2020 by balaji.thirumalai

1 answer

(chatquestion)...(c) TC (d) 192 96 TC 44. cos 6x cos° x dx %3D TC (a) 8. (b) 16 (c) 32 TC (d) 64 7C...(Solution plzzzzz)

asked Mar 25, 2020 by balaji.thirumalai

1 answer

(chatquestion)...v10 2/3+ v2 v3 - 2 /4+ 29+ 3{3. 10

asked Mar 25, 2020 by balaji.thirumalai

1 answer

(chatquestion)...PART - A The Perovskite structure has the formula A"B"03. The A cations form a primitive cubic close packing with the oxide ions occupying the centres of the faces and B cations at the body centre. The total number of ions of A, B and O in the unit cell are, respectively, 1. (A) 1, 1 and 3 (B) 2, 2 and 6 (C) 2, 1 and 3 (D) 1, 2 and 3...(Help pls)

asked Mar 25, 2020 by balaji.thirumalai

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(chatquestion)...-. 70(4-7) -so

asked Mar 25, 2020 by balaji.thirumalai

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(chatquestion)...males. 135. How many of the following are found in a Graafian follicle? Primordial germ cell, Oogonia, Primary oocyte, Zona pellucida, Corona radiata, Primordial follicle, Theca externa, tunica albuginea (a) One (b) Two (c) Three (d) Four

asked Mar 25, 2020 by balaji.thirumalai

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(chatquestion)...Remove the isralionality in the dinominatori 213-V2 To+3

asked Mar 25, 2020 by balaji.thirumalai

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(chatquestion)...8. 1 gas A barometer tube, containing mercury, is lowered in a vessel containing mercury until only 50 cm of the tube is above the level of mercury in the vessel. If the atmospheric pressure is 75 cm of mercury, what is the pressure at the top of the tube? (a) 33.3 kPa (b) 66.7 kPa (c) 3.33 MPa (c) 9. 6.67 MPa One mole of a gas expands obeying the relation as shown in the P/V diagram. The maximum temperature in this process is equal to (Vo.Po) (2Vo.Po/2) Po Vo (a) ЗРО Vo (b) 9P,Vo (c) (d) None of these R. 8R A vessel with open mouth contains air at 60°C. When the vessel is heated upto temperature T, one fourth of the air goes out. The value of T is 10. (a) 80°C (b) 171°C (c) 333°C (d) 444°C of N2 gas is contained in a flask at a pressure of 10 atm and at a temperature of 57°. It is 11. 28 gm found that due to leakage in the flask, the pressure is reduced to half and the temperature reduced to 27°C. The quantity of N, gas that leaked out is 11/20 gm (b) 20/11 gm (c) 5/63 gm (d) 63/5 gm (a) vessel at...(9th)

asked Mar 25, 2020 by balaji.thirumalai

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(chatquestion)...During complete oxidation of two molecules of pyruvic acid, how many protons are released into perimitochondrial space during terminal oxidation - (1) 56 (2) 92 (3) 80 (4) 88

asked Mar 25, 2020 by balaji.thirumalai

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(chatquestion)...12. The first three terms of a progression are 3, -1, -1. The next term is -5 (a) 2 (b) 3 (c) 27 --

asked Mar 24, 2020 by balaji.thirumalai

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(chatquestion)...of Molar mass M is contained in a vertical tube of height H, closed at both ends. The tube is accelerating vertically upwards with acceleration g. Then, the ratio of pressure at fhe 18. An ideal gas bottom and the mid point of the tube will be (a) exp[2MgH/RT] (b) exp[-2MGH/RT] (c) exp[MgH/RT] (d) MgH/RT letional kinatic onory to rotational kinotic onorgy ofa diatomicmoloculo

asked Mar 24, 2020 by balaji.thirumalai

1 answer

(chatquestion)...CH 1. NANH (2eq.) 2 CH,CH,-I 3. CH-I 4. H2/Pd-BaSO4 85. Product (X) is : ОН CH,CH2 CH3CH2 (a) (b) OCH3 CH2-0-CH3 CH3 CH3. (d) (c) 0-CH,CH3 CH OCH,CH3 ANSWERS - LEVEL 1

asked Mar 24, 2020 by balaji.thirumalai

1 answer

(chatquestion)...A metallic element exists as cubic lattice. Each edge of the unit cell is 2.88 A. The density of the metal is 7.20 g cm-3. How many unit cell will be present in 100 g of the metal - (A) 6. 85 × 102 (B) 5. 82 × 1023 (C) 4. 37 x 10° (D) 2. 12 x 106

asked Mar 24, 2020 by balaji.thirumalai

1 answer

(chatquestion)...Three stars each of mass M and radius R are initially at rest and the distance between centres of any two stars is d and they form an equilateral triangle. They start moving towards the centroid due to mutual force of attraction. What are the velocities of the stars just before the collision? Radius of each star is R.

asked Mar 24, 2020 by balaji.thirumalai

1 answer

(chatquestion)...(a) -1 (b) 1 5 f z, #0 and z, are two complex numbers such that 2 is 2z, + 3Z2 is equal to a purely imaginary number, then 2z, -3z2

asked Mar 24, 2020 by balaji.thirumalai

1 answer

(chatquestion)...(28) A pendulum having a bob of mass m is hanging in aN ship sailing along the equator from east to west. When the ship is stationary with respect to water the tension in the string is T. (a) Find the speed of the ship due to rotation of the earth about its axis. (b) Find the difference between T, and the earth's attraction on the bob. (c) If the ship sails at speed v, what is the tension

asked Mar 24, 2020 by balaji.thirumalai

1 answer

(chatquestion)...The sum of series 2" --2 2" - 2" 218 218 +3 217 217 .... +(19) 2+ 219 +. + 20 is: 221 -4+ 219 (A) 221 -16+ 218 (B) 221 -24 - (C) 219 (D) Nor

asked Mar 24, 2020 by balaji.thirumalai

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(chatquestion)...(c) {z:z#1} 2:2 (p) 1+z Let a = Im 45. where z is any non-zero complex 2iz number. The set A = fa:lzl = 1and z ±1} is eqpint JEE (Matni %3D %3D (a) (-1, 1) (c) [0, 1) (b) -1, 11 (d) (-1,01

asked Mar 24, 2020 by balaji.thirumalai

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(chatquestion)...(a) (b) 3 (c) 0. 3 (d) Circle represents most basic atoms in these molecule. Which of the following is correct representation ? 19. H. (a) N) (b) H2N CN (c) (d) All of these H2N NH2 0. Circle represent most acidic hydrogens in these molecules. Which of the following is con...(Goc class 11)

asked Mar 24, 2020 by balaji.thirumalai

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(chatquestion)...18. An ideal tube is accelerating vertically upwards with acceleration g. Then, the ratio of pressure at the bottom and the mid point of the tube will be (a) exp[2MGH/RT] gas of Molar mass M is contained in a vertical tube of height H, closed at both ends. The (b) exp[-2MgH/RT] (d) MgH/RT (c) exp[MgH/RT]

asked Mar 24, 2020 by balaji.thirumalai

0 answers

(chatquestion)...h= 101 an a =?

asked Mar 24, 2020 by balaji.thirumalai

1 answer

(chatquestion)...12,3,4

asked Mar 24, 2020 by balaji.thirumalai

1 answer

(chatquestion)...6. A ball is tied with a string and left from some height as shown in the figure. A second ball is placed on the floor just below the pivoted point O. The first ball hit the second ball and the collision is inelastic with the coefficient of restitution 3/5. The height raised by the first ball after the collision is |= 2 m 60° First ball Second ball m = 0 (a) 1.2 m (c) 1.38 m (b) 1.52 m (d) 1.6 m...(??)

asked Mar 24, 2020 by balaji.thirumalai

1 answer

(chatquestion)...=1635 dast brem a= 98 of

asked Mar 24, 2020 by balaji.thirumalai

1 answer

(chatquestion)...OAP ア 22119t16 4 n=? d= 22- 25==3 /15 Xニ

asked Mar 24, 2020 by balaji.thirumalai

1 answer

(chatquestion)...-7r:+15x-9 -5¢ +27x=-27 Lim

asked Mar 24, 2020 by balaji.thirumalai

1 answer

(chatquestion)...The length of a rectangular park is 'x' m, while the breadth of the park is 12 m less than the length of the park. A path having area 348 m and width 'y' m has been made around outside the park. If the cost of fencing around the entire boundary of the path (i.e. on both sides) is Rs. 1856 at the rate of Rs. 8 per m then find the value of 'x'.

asked Mar 24, 2020 by balaji.thirumalai

1 answer

(chatquestion)...24t what volume and 0.1 molar Ę ca(NO,) o that should we mix 0.2 molar von the Q: In. ratio 08.00 con. anien ü 50% gueater that of catiovma ter than greatir 09.00

asked Mar 24, 2020 by balaji.thirumalai

1 answer

(chatquestion)...5) Find the co-efficient of x11 in (x3 -)“. (x²

asked Mar 24, 2020 by balaji.thirumalai

1 answer

(chatquestion)...30) A potato gun fires a potato horizontally down a half- open cylinder of cross-sectional area A. When the gun is fired, the potato slug is at rest, the volume between the end of the cylinder and the potato is Vo, and the pressure of the gas in this volume is 128P). The atmospheric pressure is Po. The gas in the cylinder is diatomic; this means that C, = 5R/2 and C, = 7R/2. The potato moves down the cylinder quickly enough that no heat is transferred to the gas. Friction between the potato and the barrel is negligible and no gas leaks around the potato. The parameters Po, Vo, and A are fixed, but the overall length L of the barrel may be varied. The maximum kinetic energy Emax with which the potato can exit the barrel is open Clased Potato A) 301 P,Vo B) 100 PVo C) 402 PoVo D) 209 PVo

asked Mar 24, 2020 by balaji.thirumalai

1 answer

(chatquestion)...cosa +o) 15. sinß cosß cos(B+8)= 0 siny cosy cos(y+8) sin a Cosa %3D

asked Mar 24, 2020 by balaji.thirumalai

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(chatquestion)...anometer the value of AC would :- B. (2) x/2 (3) 2x 40. Find final charge on capacitor:- (4) None し s 2R 21 + nt3 2R 1=56 7R (1) CE (4) 2CE 3 Achiever (MAZC, MAZD,MA SPACE F 25022020/English R. 10...(???)

asked Mar 24, 2020 by balaji.thirumalai

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