Recently Active Questions

If the angle between a, b is twice the angle between a, c & b, c, then find the value of [a, b, c]. Here a, b, c represents unit vectors..... ...

HOW MUCH BIOMOLECULES & POLYMERS ARE USEFUL IN JEE PREPARATIONS??? WHAT ARE MOST IMPORTANT TOPICS IN JEE ORGANIC???? PLZ REPLY ...

1 mole N2H4 loses 10 moles of electrons to form a new compound Y . assuming that all nitrogen appear in the new compound, what is the oxidation state of nitrogen ? ( there is no change in ON of hyogen )..... a) -1 b) -3 c) +3 ...

Why does bond angle decrease from from NH3 to PH3? ...

if *Image* and 2 *Image* then the sum of digits of least integer n is a)13 b)10 c)8 d)17 ...

This is easy, but looks more in the JEE league: Its known that a2005+b2005 can be expressed as a homogenous polynomial in (a+b) and ab. What is the sum of these coefficients? ...

Question. A uniform solid cylinder made of steel is compressed along the axis. Which of the following statements are correct?? (A) Decrease in volume of the cylinder is independent of its area of cross-section but directly pr ...

Find the number of positive integral solutions to the equation *Image* ...

At high pressure eqn is P(V-nb)=nRT naa ??? At low presure eqn is (P+n2a/V2)V=nRT ?? what is eqn when force(attraction) is neglible ??? ...

Sir I am facing problems in solving the problems of NewtonsLaw especially those of pulleys.Please help. ...

sir please give steps on calculating the period of a function, ...

Q1 Is HF dibasic acid ? Q2 Arrange Cl2,Br2,F2,I2 in dec. oxidising power Q3 Oxalic acid +conc.H2SO4 → ?? ...

F- has has greater size than Ne True/false I think its true but my book says Ne Verify my answer. ...

1)For an LR circuit at t=0 , rate at which magnetic energy gets stored in the inductor (A)Decreases continuously (B)Increases continuously (C) First increases and then decreases (D)First decreases & then increases ...

so how was it?????? ...

a parabloa y^2=4x is given.also family of lines 2ax+by+2c=0 is given where a,b,c are in AP Q1 waht is combined eqn of members of family of lines where tangents are to a give parabola Q2 if secants are drawn to above parabola ...

I came across a question wich was as follows : *Image* Now the product given in the ans is *Image* I agree that there is no problem in this answer BUTTTTTTTTTTTTT wats wrong in the product that i m putting forward???? It has ...

in a center test there are p questions in the test. 2^\left(p-r \right) students give wrong answers to atleast r questions ( 1\leq r\leq p ) if total number of wrong answers given is 2047,find the value of p. ...

find the value of [(3- 5 )100+(3- 6 )100+(3- 7 )100+(3- 8 )100] where [.] stands for greatest integer function.... I gave a variant of this one in an exam thinking that this would be easily cracked.. but no one seems to have ...

What is the exact relationship between equivalent conductivity(Λ) and concentration? Is the relation Λ= κ/C valid at infinite dilution.... but then κ∞=CΛ∞=0xΛ∞=0... And another thing what will be the graph of Λ v ...

A chain of mass M and length l is suspended vertically with its lowest end touching a scale. The chain is released and falls onto the scale. What is the reading of the scale when a length of chain, x, has fallen? (Neglect the ...

prove that [ (8+3√7)20 ] is odd [] is gif ...

A particle is projected at an angle of 60° with speed 10√3 from teh point A as shown in teh fig......at the same time the wedge is made to move with speed 10√3 towards rigth as shon in the fig.....then time after which p ...

Let g be a continuous function and attains only rational values. If g(0) = 5, then the roots of the equation (g(2009))x2 + (g(2008))x + (g(2010)) = 0 are 1. Real and equal 2. Real and unequal 3. Rational 4. Imaginary ...

1.The total no. of all proper factors of 75600 is (ans- 118) 2. If nC4,nC5,nC6 are in AP, then the value of n is (ans- 7 & 14) 3. Let the exponent of 7 in 100C50 is t. Then t will be (a) divisible by 7 (b) div by 100 (c) div ...

Question. A uniform power pole of mass m and lenght L is hoisted into a vrtical position with its lower end supported by a fixed pivot at 0. The wires supporting the wires are accidently released, and the pole falls to the gr ...

Question. previously u had told the way to find generative function. But I am unable to find the generative function of ax-1 + ax+1 = √2ax. I got stuck after this step, f(x)= a1x+(a2-√2a1)x2/(x-1/√2)2+1/2 How to find an ...

If the no. of ways of selecting n cards out of unlimited no. of cards bearing the nos. 0,9,3 so that they cannot be used to write the no. 903 is 93, then n is : A. 3 B. 4 C. 5 D. 6 ...

Consider the following compound A (below) : - *Image* Select the correct statement(s) : (a) It is more acidic than CH3 OH (b) It is more acidic than CH3 COOH (c) It reacts fastest with Lucas reagent (d)It is a dibasic acid ...

1)Structure of H2S205 plzz? Does it have S-S bomd ...