Recently Active Questions

Find all roots of the polynomial 4x^6 - 6x^2+2\sqrt 2 = 0 ...

two point charges q1 and q2 are fixed & placed distance s apart.Now slab(dielectric) of thickness t and relative permittivity E is inserted. Find force of b/w q1 and q2 ...

How many steps are required to convert 1‐butanol to N‐ethylethanamine efficiently INTEGER ANS TYPE ...

plz give reason *Image* ...

*Image* Please explain these graphs fully. ...

STATE WITH REASONS : T/F : 1) Degree of dissociation of weak acid decreases on dilution. 2) The smaller the value of Ka of a weak acid, greater is the hydrolysis constant of the conjugate base. ...

A 150 mL of solution of iodine is divided into two unequal parts, First part reacts with hypo solution in acidic medium. 15 mL of 0.4 hypo solution was consumed. 2nd part was added to 100 mL of 0.3 M NaOH solution. Residual b ...

here's a simple one prove that a number with 3^m equal digits is divisible by 3^m ...

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If x,y,z are positive reals satisfying x+y+z=1 , find the maximum value of (1-x)(2-y)(3-z) . ...

starting 2010 with chem :) *Image* ...

Solve this one Guys!!!!! The height of a parabolic arch is 18m.The span of the arch is 24m.Find the height of the arch 8m on each side from its central position? ...

The new coordinates of point (3,4) when it is rotated through an angle of \Pi /4 about the origin in anticlockwise direction Ans(-1/√2 , 7/√2) ...

*Image* The given arrangement has to be arranged in increasing order of water solubility. Why is the answer 4>3>2>1? In 1, chillation occurs. and i have some idea about 4 being a the top.But still, can someone please ...

(1) Find the root mean square current of one cycle in an A.C. circuit in which instantaneous current is given by equation 1= 31 + 6 sin wt - 8 cos (wt ). ...

*Image* wavelength=λ ...

Find the number of roots of the equation z^7+4z^2+11=0 satisfying 1<|z|<2 ...

can droppers give IIST entrance exam ?? ...

Statement 1: In a conductor of non- uniform cross-section, the current is same, though the drift velocity is different. Statement 2: In series current is same and for same current drift velocity is inversely proportional to c ...

This is not for JEE I am interested in quantum physics. Can anyone give me names of some books from where I can study it.I need to get the feel of it...so any good book is welcome. ...

if (1+x+3x^2)^{30}=a_0+a_1x+a_2x^2............a_{60}x^{60} then find the value of a_{5}+a_{7}+a_{9}+.........a_{59} ...

\frac{4}{19}+\frac{44}{19^2}+\frac{444}{19^3}..........\infty ...

(1) 1.5g of a monobasic acid when dissolved in 150g of water lowers the freezing point by 0.165°C. 0.5g of the same acid when titrated,after dissolution in water,requires 37.5ml of N/10 alkali. Calculate the degree of dissoc ...

(1) Sea water is found to contain 5.85% NaCl and 9.50% MgCl2 by weight of solution. Calculate its normal boiling point assuming 80% ionisation for NaCl and 50% ionisation of MgCl2[Kb(H2O) = 0.51kgmol-1K]. ...

Matrix match type. Two infinitely long line charges L1 & L2 are placed symmetric to x-axis as shown. Match the foll. for directions of electric field at point P on the x-axis. *Image* Column-1 A)Both L1 & L2 are +ve. B)Both L ...

(1) A complex is represented as CoCl3 . x NH3 . It's 0.1 molal solution in aq.solution shows ΔTf = 0.558°C. Kf for H2O is 1.86 K mol-1kg. Assuming 100% ionisation of complex and coordination no. of Co is six, calculate form ...

IISER ( Indian Institude of Science Education and Research ) I have got addmission in IISER , Mohali . They provide 5-year integrated MS programme. Now i want to know its status and ranking in Indian Institutions/Universities ...

i need the best and shortest methods to solve these in exma hall... Q1 Let P(x)=x^5+x^2+1 have roots x_1,x_2,x_3,x_4,x_5 and g(x)=x^2-2 then find value of g(x_1)g(x_2)g(x_3)g(x_4)g(x_5)-30g(x_1x_2x_3x_4x_5) Q2 Let \alpha =e^{ ...

find the average of numbers ksin(k) wer (k=2,4,6......180) ...

ABC is a right angled isosceles triangle, right angled at A(2,1).If the equation of side BC is 2x+y=3, then find the combined equation of lines AB and AC. Ans-- 3x2-3y2-8xy-4x+22y-7=0 ...