Recently Active Questions

A spherical ball of radius R, is floating in liquid with the half of its volume submerged in liquid. Now the ball is displaced vertically by small distance inside the liquid. Find the frequency of oscillation of ball. (A) π/ ...

1. Which of the following act as antiseptic ? a) Iodine b) Penicilline c) Morphine d) Bithional 2> Which of the following compounds are covalent a) CaCl2 b) CaO 3) HCl d) CO2 3. Which of the following are polyster a) Bakel ...

Q1 If length of major axis intercepted between tangent and normal at a point (acosθ ,bsinθ ) on the ellipse x2/a2 +y2/b2=1 is equal to semi major axis,prove that eccentricity is (secθ (secθ -1))1/2 i am unable to reach th ...

1. CH3 —CH—CONH2 | CH3 2. CH3 —CH2 —CH–CH2 —CH3 | COOH 3. Cl | CH3 —CH2 —C= CH–CH3 ...

*Image* ...

1.CH3CH2Br (catalyst -aq. NaOH) ----> [A] +(catalyst- K2Cr2O7 H2SO4) ---------> [B] 2. (CH3COO)2 Ca (heat)------>[A]+ (catalyst - Zn/ HCl) ----->[B] ...

1. Phenol to toluene 2. Benzene to aniline 3. Phenol to salicyldehyde ...

1)find the nth term of the sequence *Image* such that *Image* 2)Find the nth term of the sequence *Image* such that *Image* 3)Find the nth term of the sequence *Image* such that *Image* then Calculate *Image* 4)Find the n th ...

1....UNIFORM ROD OF LENGTH L AND MASS M..IT IS FREE TO ROTATE IN A HORIZONTAL PLANE ABOUT A VERTICAL AXIS THROUGH ITS ONE END..IN EQUILIBRIUM IT IS PARALLEL TO WALL.. (A)WHAT IS THE PERIOD OF SMALL OSCILLATION THAT RESULT WHE ...

SINGLE CHOICE 1. A conducting rod is rotated in uniform magnetic force field (B) with constant velocity (V). Thep.d. is developed between ends of rod when a) V||l b) V||B c) l||B d) None 2. Inbinary system 111 represents— ...

ETHENE ON OXIDATION WITH O2 (IN PRESENCE OG Ag2O )GIVES A.EPOXYMETHANE B.ETHYLENE OXIDE C.OXIRANE ...

3 inf. planes(A,B,C) have uniform surface charge distribution σ on its surface.All charges are fixed.On each of 3 inf. planes,parallel tp YZ plane placed at x=-1,x=0,x=a.Find potential diff b/w A and C ...

*Image* ...

0.1M Cr2O72- will be better oxidisng reagent for ? a)10 ml 1M CH3COOH +10 ml 1M NH4OH b)100 ml 0.1M NaOH +100ml 0.1M HCl c)50ml 0.1M HCl d)100ml 10-7M HCl do we have to use nernst eqn here ?? ...

In alkaline soln K2Cr2O7 with 30% H2O2 gives a red brown compound A(K3CrO8).Find oxidn state of Cr in it. ...

An ideal gas whose adiabatic exponent equals γ is expanded so that amount of heat transferred to gas equals derease in internal energy.Find eqn of process ...

*Image* ...

Q1 Keplers laws dont always hold true for sattelite motion .Why ? a)Interactions between planets and the sun are diff fro mthose b/w the planets and the satellites b)His laws were for elliptical orbits and satellite motion ma ...

*Image* Ques1) In the above figure, Compound A has two stereoisomers, but compounds B and C exist as single compounds. Explain. Ques2) *Image* The enantiomers of 1,2-dimethylaziridine can be separated even though one of the â ...

hello guys i am going to finish my portion very late......say march 20 .......abd i have yesy series of bt and fiitjee(corres) and wont have time to do all .....so shall i do only BT STS and some of f fiitjee aits ......as bt ...

Since no one reeds articles posted here.....so i thought its better to post in forum Venkatraman Ramakrishnan may have won a Nobel for Chemistry, but he was never good enough to crack the IIT-JEE. The scientist was perhaps on ...

MULTI ANSWER CORRECT *Image* ...

can anyone here give me their narayana aits papers(+solutions)?? I will pay . ...

Maybe this is pretty easy -- but I liked it a lot -- so here goes -- Find the remainder when 1003 x 1009 x 1017 is divided by 119. ...

why PH5 does not exist ...

find the area enclosed by |x|+|y|<1 ...

tan2 (pi/7) + tan2 (2pi/7) + tan2 (3pi/7) ...

\mathfrak{Evaluate-} \boldsymbol{\sum_{i=1}^{100}{\binom{100}{i}}\left ( 2^{i-1} \right )\left ( 1+3^{100-i} \right )} ...

Q1) Figure shows a weigh bridge, with a beaker P with water on one pan and a balancing weight R on the other. A solid ball Q is hanging with a thread outside water. It has volume 40cm3 and weighs 80gms. If this ball is to be ...

*Image* Compare the acidities of I and II ...