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(chatquestion)...The ligand which have maximum probability to show HM Mn 2. macrocyclic effect? (1) (2) CH,-NH, (1) °O- (3 (4 7. (2) 8. HO N-0° (3) Н.С —С — С-СH, (4) 9. totrobedral...(Hlp)

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(chatquestion)...The force between two point charges in vacuum 27. is 15N, if a brass plate is introduced between. the two charges, then force between then will- (a) Becomes zero (b) Remains the same Becomes 60 N A small circular ring has a uniform charge distribution. On a far-off axial point distance x (c) 28. Becomes 30N (d) from the centre of the ring, the electric field is proportional to - (а) х (с) х 9. (b) х2 (d) х54 A uniform electric field having a magnitude EO and direction along positive x-axis exists. If the electric potential(V) is zero at x 0 then its value ALDI 2020/2/4 00:19 %3D...(Question 28...confused becoz I tick 2 but answer is showing 1....plzz guys hlp me to clear itt)

asked Feb 3, 2020 by balaji.thirumalai

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(chatquestion)...Determine the bond order & formal charge on each oxygen atom in HCO, respectively? (1) 1.5, –0.5 (2) 2, –0.5 (3) 1.33, –1.5 (4) 1.5, –1.33

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(chatquestion)...Equal volumes of a perfect gas are compressed 10 to half of their initial volumes. The first of brought about by isothermal process and the second by adiabatic process then - (1) Both temperature and pressure will increase in the isothermal process. (2) In the isothermal process, the temperature will decrease and pressure will increase. (3) Both temperature and pressure will increase in adiabatic process. (4) In the adiabatic process, the temperature will diminish and pressure will increase. [AIPMT 90] 11

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(chatquestion)...Show that for two traveling waves each with amplitude A have the same crergy as in a (4 marks) standing wave with amplitude A.

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(chatquestion)...What mass of non volatile solute urea needs to be dissolved in 100g of water in order to decrease the vapour pressure of water by 25%? What will be the molarity of the solution?

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(chatquestion)...BIOLOGY 246 Cell Division Death SENESCENCE Plasmatic growth Differentiation MERISTEMATIC CELL MATURE CELL Maturation Expansion (Elongation) Figure 15.8 Sequence of the developmental process in a plant cell Plants follow different pathways in response to environment or phases of life to form different kinds of structures. This ability is called plasticity. es. heterophylly in cotton, coriander and larkspur. In such plants, the leaves of the juvenile plant are different in shape from those in mature plants, On the other hand, difference in shapes of leaves produced in air...(What type of question can be arise from this figure??? Please .....anyone tell me.)

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(chatquestion)...78. Which is not correct? (1) White vitriol and epsom salt are isomorphous (2) Thermal stability → BECO, < MGCO, < CaCO, < SrCO, (3) Solubility 3. → NAHCO, <KHCO, <RÜHCO, < CSHCO, (4) Melting point →Al,O, < MgF, 3. Which molecule does not exist? (1) MnF, (2) SH, (3) (BCI,), (4) 2 & 3 both

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(chatquestion)...(b) Give Poiseuille's formula. Describe Poiseuille's method to determine the coefficient of viscosity of water. e with constant terminal...(Can you send this answer)

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(chatquestion)...(4) „(4) 50. Consider the given reaction sequence 54 Ni NO2 yi Conc. HNO,/H,SO, (NH,),S 80-100°C (1) CH,COCI B- (ii) Pyridine The product C is NHCOCH3 NH2 (2) NH (1) Сосн, NH2 NHCH, NHCOCH, (4) (3) NO2 NON,

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(chatquestion)...14 A barometer with an imperfect vacuum above mercury reads 757 mm and747 mm when the correct pressures are 772 mm and 757 mm respectively. What is the true value of the pressure when the faulty barometer reads 737 mm? (Ans. 744.5 mm)

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(chatquestion)...not a state pressure constant volume (3) w at adiabatic (AY w at isothermal AIPMT 2014 For the reaction : X,O4(0) 2X09) AU - 2.1 k cal, AS- 20 cal K-1 at 300 K 37. ndard Hence AG is :- (1) 2.7 k cal (3) 9.3 k cal e and eases afe 2- 2.7 k cal (4) 9.3 k cal AIIMS 2014 38.)7ASTotal 40 kJ / mol x K 2000 kJ / mol AH "sys 400 K %3D Find out value of AS system ? - 35 kJ/mol x K (3) - 40 kJ/mol x K (2) – 5 kJ/mol x K (4) - 5 kJ/mol xK Heat of sublimation of Na = x J Ionization energy of Na= y J Bond dissociation energy of Cl, = a J %3! e gain enthalpy of Cl = - b J Enthalpy of formation of NaCl = - c J Then what will be lattice energy of NaCl (***) a (1) b + 46 = -T0S sys (2) b - x+y+ c A4 =on-7 sya -+x+y+c (3Y b - a (4) c -X+y+c 59...(39)

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(chatquestion)...phol (2) Acetamide (3) Ethyl amine (4) Acetaldehyde 82. Which among the following pairs cannot be distinguished by iodoform test? (1) CH,CHO and CgH,CH,CHO (2) CH,OH and C,H,OH (3) CH;CHO and C,H;OH CHO and CH,CHO (4) CHs CHCOHSpace f or

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(chatquestion)...ice cubes, the entropy of water oes not change (2) Increases (3) Decreases (4) May either increase or decrease depending on the process used For a, phase change H,0(4) oC Ibar H,O(5) 0°C 1 (2) AS = 0 X (4) AU = 0X WAG = 0 (3) AH = 0 13 %3D For a spontaneous process the correct statement Oune Totel 7. EMLENG\SET 02\09-THERMODYNAMICS\02-EXERCISE R

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(chatquestion)...kp Cequa li brium Constant) find Quer /2 02

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(chatquestion)...Which of the following molecule/species are iso-structural with N, ion? (2) I, (1) I (4) HCO, (3) NH,

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(chatquestion)...kp Cequa li brium Constant) find Quer /2 02

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(chatquestion)...Br KBr + MnO2 + H2SO4 (conc.)-→ KHSO4 + MNSO4 + H2O + [X] (unbalanced equation) AJ X turns starch paper orange red (B) X with AgNO3 solution gives a pale yellow ppt which is completely soluble in dilute ammonium hydroxide. (C) X produces violet colour in organic layer in KI solution (D) X is liberated when a 5.a of KBr

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(chatquestion)...A balloon rises from rest with a constant acceleration g/8. A stone is released from it when it has risen to height h. The time taken by the stone to reach the ground is (b) 2 (a) 4 2h (c) (d)

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(chatquestion)...21. A block of mass m is in contact with the cart C as shown in the figure. The coefficient of static friction between the block and the cart is u. The acceleration a of the cart that will prevent the block from falling satisfies: [AIPMT (Prelims)-2010] mg (1) α> (2) a > um (4) a < (3 ) α

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(chatquestion)...[HS'17] | 24. 25% of the scored in a distribution is less than | the score 10 and 25% is more than the score 40. Find out the quartile deviation of the distribu- [HS '18] | B. Short Type Questions: Marks: 2/3/4 1. What do you mean by Quartile Deviation?

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(chatquestion)...A mixture of H,0 vapour, CO, and N, was trapped in a glass apparatus with a voume of 0.731 mL. The pressure of the total mixture was 1.74 atm at 27° C. The sample was transferred to a bulb in contact with dry ice (-75°C) so that the H,O vapour was frozen out. When the sample was returned to the measured volume, the pressure was 1.32 atm. The sample was then transferred to a bulb in contact with liquid nitrogen (-95° C) to freeze out the CO,. In the measured volume, the pressure was 0.53 atm. How many moles of each constituent are in the mixture ? Two flasks of equal volume conected bt a narrow tube Q11. (of negligible volume ) are 27° C and contain o One of the flask is then immersed into a bath kept at 127° C,

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(chatquestion)...(D) F and P (C) G and F MATCH LIST TYPE This question contains two matching lists. Choices for the correct combination of elements from Lista e List-ll are given as option (A), (B), (C) and (D) out of which one is correct. Two identical speakers emit sound waves of frequency 680 Hz uniformly in all directions with a total output of 1mW each. The speed of sound in air is 340 m/s. A point P is at a distance 2m from one speaker and 3m from the other. Match the following. List - II List - I The intensity due to a speaker at point P which is 2 m (P) 5.6 x 10 W/m? (1) from the source If the speakers are driven coherently and in phase, the (Q) intensity at point P will be due to both speakers 2.2x 106 W/m2 (2) If they are driven coherently but out of phase by 180°, (R) the intensity at point P will be due to both speakers 2.9 x 10 W/m? (3) If the speakers are incoherent, the intensity at point P (S) will be due to both speakers 2 x 105 w/m2 (4) Codes: 4 3 (A) (B) 4. 4. 3. St231 P234 2

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(chatquestion)...= cot"(3x+ 2) + cot"(6x+2) + cot" (10x + )+ S. upto n terms ニ where, x>o. If Lim S, = 1; then x = (A) TT (B) 1 (C) tan 1 (D) cot 1

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(chatquestion)...uny Tole III CaiciuI balance in the human body? (a) Vitamin D (c) Thyrocalcitonin (b) Parathyroid hormone Jd Thymosin 14. Which of the following organs in mammals does not consist of a central 'medullary' region surrounded by a cortical region? (a) Ovary (0iver 15. Which of the following conditions is not linked to deficiency of thyroid hormone? JA Cretinism AoK Adrenal (d) Kidney (b) Goitre

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(chatquestion)...Find the vector and cartesian equations of the line through the point (1, 2, – 4) and perpendicular to the two lines 7=(8i - 19j+10k) + 2 (3i – 16j + 7k) and bas %3D T = (15i + 29j+ 5À) + µ (3î + 8j – 5Â).

asked Feb 2, 2020 by balaji.thirumalai

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(chatquestion)...x+2 dx. +2x+3 x²

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(chatquestion)...log|1+ x| dx. 1+ x2

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(chatquestion)...Explain Dow's process for the preparation of Phenol.

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(chatquestion)...30 (r+ 2) (r- 3) is equal to : The value of 24. r=16 t tem (3) 7785 (2) 7780 (1) 7770

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(chatquestion)...Compare bond length between w,x,y,z. Also provide explanation please. Answer Pending Feb 1, 2020, 1:20:49 PM en Compare bond lengbh C-0 R-CCH

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(chatquestion)...Questiom 27. Prove by vector method that the altitudes of a triangle are concurrent. Or

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(chatquestion)...(b) The wavelength of visible light ranges from 2, = 770 nm down to 22 = 380 nm. What colors do the wavelength 2, and 2; corespond to, respectively? Why is that particular cange.of wavelengths visible? (c) The double -slit arrangement is illuminated with light from a mercury vapor lamp filte 30 that only the strong green line (=546 nm) is visible. The slits are 0.12 mm apart, an the screen on which the interference pattern appears is 55 cm away. (1) What is the angular position of the first minimum? (i)What is the distance on the screen between the adjacent maxima? %3!

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(chatquestion)...76. (76. In the following chemical reactions: B,0, + C + Cl, → A + B |Н.О -Но AHot C+D Which of the following option is incorrect :- (1) Bond order of 'B' is 3 (2) A, B & C compound are acidic in nature (3) A, C & D are acidic in nature (4) B & C shows back bonding 77. 77. When copper ore is mixed with silica in a

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(chatquestion)...d. (1,2) c. (-3,2) 30. The equation of the st. line passing through (1,1) and parallel to x- 5xy+4y'+x+2y-2 =0 is a. x²-5xy+4y+3x-3y=o b. x2+5xy+3y'+7x+2y=0 c. 4x²-3xy+7y'=0 d. x²+2xy+3y²+7x+4y=0 31. The product of

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(chatquestion)...ONE OPTION CORRECT TYPE An examination paper contains 8 questions of which 8. 1. 4 has 3 possible answers, 3 have 2 possible an- swers each and the remaining one question has 4 possible answers. The total number of possible an- swers to all the question is 9. (2) 78 (1) 2880 (4) 2592 (3) 94 10 A nolygon has 44 diagonals. The number of its

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(chatquestion)...d an and NA (c) sin (d) sin the 22. L. cide. own 14, An oil flowing on water seems coloured due to interference own For observing this effect, the approximate thickness of the ol nt is 010] film should be [JIPMER 1997; RPMT 2002, 04) (b) 10000 Å (a) 100 Å (d) 1 cm (c) 1 mm 12

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(chatquestion)...78) A coil of inductance L = 50HH and resistance = 0.5N is %3D %3D connected to a battery of emf = 5 V. A resistance of 10 2 is connected parallel to the coil. Now, at same instant the connection of the battery is switched off. Then, the amount of heat generated in the coil after switching off the battery is (a) 1.25 mJ %3D (d) 0.12 mJ (c) 0.65 mJ (b) 2.5 mJ 79, In the circuit shown, the coil has inductance and d to Y, the time constant is

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(chatquestion)...F, (3) d 12. Two e R. to ea and (1) F3-F,+ F2 symr Whe (2) F-F,-F2 (3) V(F, -FY +F} be z (4) V(F,-F.Y -F? Charge q is uniformly spread on a thin ring of radius R. The ring rotates about its axis with a uniform frequency fHz. The magnitude of magnetic induction at the center of the ring is 8. (1) (3) Hogf (2) 2nR (1) 2TFR 13. A cu dia Hogf s al inemom of 2R 2fR C (1 The magnetic field of given length of wire for single turn coil at its centre is B then its value for two 9. (2 turns coil for the same wire is (- is 14. L (1) ht 4 (4) 2B re. (3) 4B 10. A very long straight wire carries a current /. At the instant when a charge +Q at point P has velocity v, as shown, the force on the charge is P. the of Onnosite to Oy

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(chatquestion)...he he (4) 90 m (3) 80 m 18. A projectile is projected with a speed 30 m/s at an angle 30° with the vertical. The speed of the projectile when its direction of motion makes an angle 30° with the horizontal is (1) 10 m/s (2) 20 m/s (3) 10/3 m/s (4) 20/3 m/s on 19. The position-time (x-t) graph for a particle moving ual along x-axis is as shown in the graph. Average nis

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(chatquestion)...1,% 48= -8/%+-8 (-0.2) 3.

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(chatquestion)...0. 9. Given a uniformly charged plane/sheet of surface charge density o = 2 × 1017 C/cm?. (1) Find the electric field intensity at a point A, 5 mm from the sheet on the left side. away (ii) Given a straight line with three points X, Y and Z placed 50 cm away from the charged sheet on the right side. At which of these points, the field due to the sheet remains the same as that of point A and why ? A&E [CBSE SQP 2016] 10 cm Y--. 50 cm 10 cm

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(chatquestion)...=1 dylde tylda

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(chatquestion)...New Doc 2020-01-... 10/1/20 IUTORTAL NO-1 8 Find order_aud degree 0ydt-zby yoa'szdy yeady i Oxrdese = s,Degree =1. dy 28.tyt! (1) -४2 i oxder = 1 3D1 dy ye iyht=( Doguse =sit' dy yuady - Qudex= 1, Degree = nod. due to sit ...

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(chatquestion)...CH3 + H20 CH30

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(chatquestion)...Two particles A and B perform SHM along the same straight line with the same amplitude 'a', same frequency 'f' and same equilibrium position 'O'. The greatest distance between them is found to be 3a/2. At some instant of time they have the same displacement from mean position. What is this displacement? (b) avī 14 (a) a/2 V3a (c) (d) 3a/4

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(chatquestion)...4a) TIRI F, individual of the cross AAbb x aaBB was test crossed. If both non-allelic genes are 24 map units apart then calculate the percentage of aaBb: (b) 1TRR (a) 24% |Seedless fruits can be produced by increase ploidy level Which of the followina ploidy will be better for producin (b) 12% (c) 76% (d) 38%

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(chatquestion)...The enone (X = C,H,O) which show(s) geometrical isomerism is/are : ईनोन (X = C,H,O) जो ज्यामितीय समावयवता प्रदर्शित करता है/हैं : .Н (IV) (II) (III (B) || and IV (B) II तथा IV (D) || only (D) केवल ॥ (A) I and IV (A)। तथा IV (C) III and IV (C)III तथा IV

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(chatquestion)...A physical quantity of the dimensions of length 2. e2 is [c is Απεο that can be formed out of c, G and velocity of light, G is the universal constant of gravitation and e is charge] 1/2 1/2 e? e? c2 G- (b) (a) G 4πε0 4 тE O 1/2 e2 -G (c) (d) cf 4περ 4πε (NEET 2017) 3. Planck's constant (h), speed of light in vacuum (c) and Newton's gravitational constant (G) are three fundamental constants. Which of the following combinations of these has the dimension of length ? ThG (a) C3/2 NhG (b) hc (c) VG Gc (d) 1.3/2 (NEET-II 2016)

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