Recent questions tagged q69

what will the motion of a charged particle in a cyclotron if the frequency of the radio frequency field is doubled ?

asked Jul 30, 2015 by meena.p

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What is the $SI$ unit of pole strength ?

asked Jul 20, 2015 by meena.p

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Six lead acid type of secondary cells each of emf $2.0V$ and internal resistance $0.015\Omega$ are joined in series to provide a supply to a resistance of $8.5 \Omega$ What are the current drawn from the supply and its terminal voltage ?

asked Jul 1, 2015 by meena.p

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A uniformly charged conducting sphere of $2.4\;m$ diameter has a surface charge density of $80.0 \mu c/m^2$ a) find the charge on the sphere b) what is the total electric flux leaving the surface of the sphere ?

asked Apr 28, 2015 by meena.p

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True-or-False :The equality $\sin A+\sin 2A+\sin 3A=3$ holds for some real value of A

asked May 20, 2014 by sreemathi.v

1 answer

The octahedral complex of a metal ion $M^{3+}$ with four monodentate ligands $L_1, L_2 , L_3$ and $L_4$ absorb wavelengths in the region of red, green, yellow and blue, respectively. The increasing order of ligand strength of the four ligands are

asked Apr 7, 2014 by sreemathi.v

1 answer

The two farms of D-glycopyranose are called

asked Mar 30, 2014 by thanvigandhi_1

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A reaction is non-spontaneous at the freezing point of water but is spontaneous at the boiling point of water, then

asked Mar 18, 2014 by thanvigandhi_1

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In extraction of iron the changes taking place in the blast furnace is

asked Mar 18, 2014 by meena.p

1 answer

Step growth polymeristion is otherwise called

asked Mar 12, 2014 by thanvigandhi_1

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Among the following molecule with the highest dipolemoment is

asked Mar 7, 2014 by sreemathi.v

1 answer

A plane electromagnetic wave in the visible region is moving along the $z$ direction. The frequency of the wave is $0.5 \times 10^{15}Hz$ and the electric field at any point is varying sinusoidally with time with amplitude of $1\: V/m$. Calculate the average values of densities of the magnetic field.

asked Mar 1, 2014 by thanvigandhi_1

1 answer

The compound which gives the most stable carbonium ion on dehydration is

asked Feb 25, 2014 by meena.p

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The major product of the following reaction is

asked Feb 24, 2014 by sreemathi.v

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A vertical hollow cylinder of height 1.52m is fitted with a movable piston of negligible mass and thickness. The lower half of the cylinder contains an ideal gas and the upper half is filled with mercury. The cylinder is initially at 300K. When the temperature is raised half of the mercury comes out of the cylinder . Find the temperature assuming the thermal expansion of mercury to be negligible.

asked Feb 21, 2014 by sharmaaparna1

1 answer

In an electrolysis experiment electric current was passed for 5hr through two cells connected in series.The first cell contains gold salt and second contains $CuSO_4$ solution.9.83g of gold was deposited in first cell.If the oxidation number of Au is +3,find the amount of copper deposited in second cell

asked Feb 17, 2014 by sreemathi.v

1 answer

Match the column-I and column-II

asked Feb 14, 2014 by sreemathi.v

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Calculate the charge on the $5\mu F$ capacitor long time after assembling the circuit

asked Feb 10, 2014 by thanvigandhi_1

1 answer

$y=e^{(t+2)x}$ is a solution of equation $\large\frac{d^2y}{dx^2}-\frac{4dy}{dx}$$+4y=0$ then t equals

asked Feb 6, 2014 by meena.p

1 answer

Name the axes are their in the ellipse

asked Feb 6, 2014 by sreemathi.v

1 answer

(Crystal Field Theory) Consider the violet-colored compound, $[Cr(OH_2)_6]Cl_3$ and the yellow compound, $[Cr(NH_3)_6]Cl_3$. Which of the following statements is false?

asked Feb 3, 2014 by sreemathi.v

1 answer

Least reactive metal is

asked Jan 30, 2014 by sreemathi.v

1 answer

In the circuit shown below two inputs A and B and output C is given. The circuit represents

asked Jan 30, 2014 by meena.p

1 answer

Oxides of alkaline earth metals are stable due to

asked Jan 28, 2014 by sreemathi.v

1 answer

The gas liberated when alkaline formaldehyde solution is reacted with hydrogen peroxide in the presence of pyragahol is

asked Jan 24, 2014 by sreemathi.v

1 answer

Poisonous gas present in the exhaust fumes of an automobile is

asked Jan 21, 2014 by sreemathi.v

1 answer

Calculate the wavelength (in nanometer) associated with a proton moving $1.0\times 10^3ms^{-1}$ (mass of proton=$1.67\times 10^{-27}$kg and $h=6.63\times 10^{-34}Js)$

asked Jan 13, 2014 by sreemathi.v

1 answer

How many 3 digit numbers leave a remainder of 2 when divided by 7 ?

asked Jan 5, 2014 by yamini.v

1 answer

The vectors $\overrightarrow a,\overrightarrow b,\overrightarrow c\:\overrightarrow d$ be are such that $(\overrightarrow a\times\overrightarrow b)\times (\overrightarrow c\times\overrightarrow d)=0$ and $P_1,\:P_2$ are two planes containing the pair of vectors $\overrightarrow a,\overrightarrow b$ and $\overrightarrow c,\overrightarrow d$ respectively, then the angle between the planes is ?

asked Jan 5, 2014 by rvidyagovindarajan_1

1 answer

If $f(5)=15,f'(5)=3$ then $\lim\limits_{x\to 5}\large\frac{xf(5)-5f'(x)}{x-5}$ is

asked Dec 24, 2013 by sreemathi.v

1 answer

Integrate :$\int \large\frac{1}{1+\cos x}$$dx$

asked Dec 17, 2013 by meena.p

1 answer

The sequence of ionic mobility in aqueous solution is :

asked Dec 17, 2013 by thanvigandhi_1

0 answers

The female fish which keeps the fertilized eggs guarded in its mouth ( parental care )

asked Dec 9, 2013 by thanvigandhi_1

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In birds the B- lymphocytes mature in

asked Dec 5, 2013 by thanvigandhi_1

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If $\overrightarrow a,\:\overrightarrow b,\:\overrightarrow c$ are three vectors of magnitude $3,4,5$ respectively. If each vector is $\perp$ to sum of the other two vectors then $|\overrightarrow a+\overrightarrow b+\overrightarrow c|=?$

asked Nov 30, 2013 by rvidyagovindarajan_1

1 answer

When $B_2H_6$ reacts with $H_2O$ or alkalies and produces $x+y$ is liberated.The $y$ liberated is

asked Nov 28, 2013 by sreemathi.v

1 answer

$pH$ of the solution containing 50.0 mL of 0.3 M HCl and 50.0 mL of 0.4 M $NH_3$ is

asked Nov 27, 2013 by mosymeow_1

1 answer

Gynacomastism is characteristic feature of :

asked Nov 26, 2013 by thanvigandhi_1

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Which event of the ' action potential ' is indicated by the letter (A) in the diagram ?

asked Nov 14, 2013 by thanvigandhi_1

1 answer

Observe the following statements :A : $f(x)=2x^3-9x^2+12x-3$ is increasing outside the interval $(1,2)$ R : f'(x) < 0 for $x \in (1,2)$ Then which of the following is true ?

asked Nov 13, 2013 by meena.p

1 answer

The perimeter of a sector is a constant. If its area is to be maximum, the sectorial angle is :

asked Nov 6, 2013 by meena.p

1 answer

Identify the correct combinations with reference to their larval forms

asked Oct 30, 2013 by thanvigandhi_1

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