Recent questions tagged other

(chatquestion)...(b) Cofactor (a) Regulator Which of the following is true, if in a DNA adenine is represented by a, guanine by b, cytosine by c and thymine by d? (c) Repressor (a) Promoter a)a+c=d + b In a DNA molecule adenine wi!l be equal to (b) a + d = b + d (e) a + c = c + d (d) a +c = b + c KThumine (d) Cytosine

asked Feb 22, 2020 by balaji.thirumalai

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(chatquestion)...Dato: \8ane for matim 8e permetting Taeneformant ina vectoo heepin seleti Antibotic Rei gene r s competent ceee taonefos med cece secombirant ceee nonef aboue

asked Feb 22, 2020 by balaji.thirumalai

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(chatquestion)...2. Two Carnot engines A and B are operated in series. Engine A receives heat from a reservoir at 600 K and rejects heat to a reservoir at temperature T. Engine B receives heat rejected by engine A and in turn rejects it to a reservoir at 100 K. If the efficiencies of the two engines A and B are represented by n, and np, respectively, then what is the value of nn¿? Ng/M4? 12 12 (c) 5 (a) 12 (b) 12 (d) 5...(Solve this...)

asked Feb 22, 2020 by balaji.thirumalai

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(chatquestion)...A 2 kg block starts from rest on the positive x axis 3m from the origin and thereafter has an accelera- tion given by ā =(4 i + 3ĵ) m/s². At the end of 2 %3D s, its angular momentum in kg m²/s about the ori- gin is (1) O (2) 36k АЗ) 13) 48k (4) 96k

asked Feb 22, 2020 by balaji.thirumalai

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(chatquestion)...4.13 smooth A rod of mass M and length L is hung from the massless string as shown and kept stationary on a frictionless horizontal surface. The ratio of tension in the string to the force exerted by horizontal sur- face on the rod is (1) 1 (2) 2 tan 0 (3) cot 0 (4) 2

asked Feb 22, 2020 by balaji.thirumalai

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(chatquestion)...16. Pick ou (3) K,SO, (4) MNSO, (1) K 8. Colourless solution of the following four salts are placed separately in four different test tubes and a strip of copper is dipped in each one of these. Which solution will turn blue? su (2) Irc (3) Pe (1) KNO, (3) Zn(NO,), (2) AGNO, (4) ZNSO, (4) Ir Cu+ conc. HNO,(hot): of nitrogen); then X is: (1) N,O 9. Cu(NO), +X (oxide T. CrO, 3. is :- (2) NO2 (4) N,O3 (1) A (3) NO (3) A 18...(8 and 9 both?)

asked Feb 22, 2020 by balaji.thirumalai

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(chatquestion)...A rocket is launched with velocity 10 km/s. If radius of earth is R, then maximum height attained by it will be [RPET 1997] 8. (a) 2R (b) 3R (c) 4R (d) 5R...(Solution of this mcq)

asked Feb 22, 2020 by balaji.thirumalai

1 answer

(chatquestion)...When an atomic gas or vapour is excited at low pressure, by passingan electriccurrent through itthen (a) emission spectrum is observed (b) absorption spectrum is observed (c) band spectrum is observed (d) both (b) and (c) strum of hydrogen,

asked Feb 21, 2020 by balaji.thirumalai

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(chatquestion)...OPPO A9 2020 - ©nagin Level gen can be prepared by the action of dil, H,50, on ddeo many neutrons are present in tritium nocleus? (AIIMS 2007) ua (9) (d) mercury pe () (RPMT 2007) h one of the following is correct order 7(P, Protium H) T>D P (order of BP) (MP PMT 2007) IT D, P, (order of B NT<D, P, (order of reactivity with Cl) III pue 10 II pue (d) II, Il and V Al pur 'u'1 (9 Radioactive isotope of hydrogen is: (RPMT 2007) (b) deuterium ) None of these LILI mg of CaCl, and 12 mg of MgSO, are present in 21. of water, what is its hardness (in unjuem unnn ()) pram CACO/ppm)? (KAMCET 2008) (c) 15 ot (4) Which one of the following processes will produce hard water? W Saturated of water with CaCO, ( Saturated of water with CaCo, Which of the following is not correct regarding the electrolytie preparation of H0, (RPMT 2008) (b) Saturated of water with MgCO, (d) Addition of Na S0, to water (AIIMS 2008) ()Lead is used as cathode id Hydrogen is liberated at anode Manch the following columns: (d) Sulphuric acid undergoes oxidation pam os H o os (9) (UP CPMT 2008) Column I Column I 10 vol of H0 Perbydrol 3. 100 vol of H02 The correct match is TEZI (4) LETP (P) ch one of the following statements in incorrect with regard to ortho and para dihydrogen? (Kerala CEE 2009) They are nuclear spin isomers he ortho isomer has zero nuclear spin whereas the para isomer has one nuclear spin...(5th question)

asked Feb 21, 2020 by balaji.thirumalai

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(chatquestion)...%23 The reaistance of of 02 molex Solusion electratyfu u Conductivity af the solus" 14. the The resistance Same electroliytel s ' of 05 molae sclus" of 200 2.find the 0'5 molar solus". Mokn Conductivity of...(Answer--5×10^-4)

asked Feb 21, 2020 by balaji.thirumalai

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(chatquestion)...Find total energy stored in capacitors given in the circuit 2µF 1µF 6V 1µF 2µF 2µF 21

asked Feb 21, 2020 by balaji.thirumalai

1 answer

(chatquestion)...1+ cos 2x 22. (x+1)² Va? 24. +1 log (x +1)-2 log x als in Exercises 25 to 33. sin x cosx...(Integral (miscellaneous exercise))

asked Feb 21, 2020 by balaji.thirumalai

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asked Feb 21, 2020 by balaji.thirumalai

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(chatquestion)...Find the M.D. from median of the following distribution: 3, 9, 2, 8, 7, 1, 7, 7, 3. Find the M.D. from median, mean and from mode of the following frequency distribution: 2. 3. Marrks 10 11 12 13 14 15 16 17 18 19 20 No.of students 8. 10 16 10 9. 4. 1.

asked Feb 21, 2020 by balaji.thirumalai

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(chatquestion)...10 Find the M.D from A.M. of the following distribution : 50 59 30-39 90-99 40-49 Class 70-79 80-89 60-69 No.of Students 11 7. 32 25 3. 20 Find the M.D from median of the following frequency distribution 4 3. 19 9. 16 c.f Find the mean deviation about mean of first 2n +1 natural numbers from mean. 23

asked Feb 21, 2020 by balaji.thirumalai

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(chatquestion)...Find the M.D from mean of the following data: 4. a) Class-interval 8-10 2-4 4 -6 6-8 Frequency Find the M.D. from median of the following data 3 4 1 b) 0-10 10-20 20-30 30-40 40 50 Marks Frequency 4. 8. 10

asked Feb 21, 2020 by balaji.thirumalai

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(chatquestion)...vaSECtomy (d) Sterilisation method 309. Following statements reflect the drawbacks of IUCDS except (a) Risk of perforation of uterus (b) They can cause excess menstrual bleeding and pain (c) Prevention of risk of infection and fertilization (d) Promotes ectopic pregnancy 310.Pills are very effectivve with lassa...(

asked Feb 21, 2020 by balaji.thirumalai

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(chatquestion)...(1) Write the structures of A, B and C in the following reactions: (a) CgH;NO, NANO2 + HCI >A• Sn +HCl, >B но 273 K Н.ОА HNO2 LIAIH, →B KCN (b) CH,Cl 273 K

asked Feb 21, 2020 by balaji.thirumalai

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(chatquestion)...5.22 Two insects of mass 'M’ each are at points P and o of a massless semicircular wire. Two more insects A and B of same mass are sitting at the bottom o the wire. The wire is given an angular velocity ». about a vertical axis through its centre. If A and R crawl to meet P and Q, final angular velocity at- tained by the wire will be Pr AB (1) Wo Wo (2) 4 13) (4) 2@0

asked Feb 21, 2020 by balaji.thirumalai

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