Recent questions tagged q60

A circular loop of magnetic moment M is in an arbitrary orientation in an external magnetic field $\overrightarrow{B}$ . The work done to rotate the loop by $30^{\circ}$about an axis perpendicular to its plane is

asked Jul 29, 2015 by meena.p

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What is the value of the horizontal component of the earth 's magnetic field at magnetic poles?

asked Jul 20, 2015 by meena.p

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If the length of the wire be doubled, What will be effect on the position of zero deflection in a potentio meter ? Explain

asked Jul 1, 2015 by meena.p

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An electric dipole with dipole moment $4 \times 10^{-9} \;cm$ is aligned at $30^{\circ}$ with the direction of a uniform electric field of magnitude $5 \times 10^4 N/C$ on the torque acting on the dipole .

asked Apr 27, 2015 by meena.p

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Which of the following statement is correct ?

asked Jul 27, 2014 by thanvigandhi_1

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The value of $\large\frac{\sin 50^{\large\circ}}{\sin 130^{\large\circ}}$ is ________

asked Apr 22, 2014 by sreemathi.v

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If $x=-1$ and $x = 2$ extreme points of $f(x)= \alpha \log |x| +\beta x^2+x$ then

asked Apr 7, 2014 by meena.p

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A hormone which helps in conversion of glucose to glycogen is

asked Mar 29, 2014 by thanvigandhi_1

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Assuming that water vapor is an ideal gas, the internal energy change ($ \Delta U$) when 1 mole of water is vaporized at 1 bar pressure and $100^{\circ}C$ (molar enthalpy of vaporization of water at 1 bar and 373 K = 41 kJ/mol and R = 8.314 J/Kmol) will be

asked Mar 18, 2014 by thanvigandhi_1

1 answer

Match correct answer using the codes given below :

asked Mar 18, 2014 by meena.p

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Buna-N is a copolymer of

asked Mar 11, 2014 by thanvigandhi_1

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Which of the following statement is correct?

asked Mar 6, 2014 by sreemathi.v

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Which of the following molecule has the highest dipole moment

asked Mar 6, 2014 by sreemathi.v

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What would be the major product in the following reaction

asked Mar 4, 2014 by sreemathi.v

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A laser emits a beam of light of $2mm$ diameter. If the power of beam is $10mW$, the intensity of the beam of light is

asked Feb 28, 2014 by thanvigandhi_1

1 answer

Dipole moment is shown by (i) 1,4 dichlorobenzene (ii) cis-1,2-dichloroethane. (iii) trans -1,2- dichleroethene (iv) trans-1,2- dichloro-2-pentene.

asked Feb 25, 2014 by meena.p

1 answer

Which is a product of Y of the following reaction:

asked Feb 24, 2014 by sreemathi.v

1 answer

The EMF of cell $Ag/AgCl(K_{sp})(saturated\; sol)\parallel Cl^-(C_1)/AgCl(K_{sp}/Ag)$ is given by

asked Feb 17, 2014 by sreemathi.v

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Find all curves in x-y plane such that tangent at each point (x,y) of curves intersects the x-axis at $(x-1,0)$

asked Feb 6, 2014 by meena.p

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Find all curves in x-y plane such that tangent at each point (x,y) of curves intersects the x-axis at $(x-1,0)$

asked Feb 6, 2014 by meena.p

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Find the equation of parabola whose vertex is (4,2) and focus is (6,2)?

asked Feb 6, 2014 by sreemathi.v

1 answer

(Valance Bond Theory) Magnetic measurements indicate that $ [Co(OH_2)_6]^{2+}$ has 3 unpaired electrons. Therefore, the hybridization of the metal's orbitals in $[Co(OH_2)_6]^{2+}$ is :

asked Feb 3, 2014 by sreemathi.v

1 answer

For a given transistor, the value of the forward transfer ratio $\beta =50$. Calculatethe ratio of change in collector current to the change in emitter current.

asked Jan 28, 2014 by meena.p

1 answer

The polorising power of $Mg^{2+}$ is nearly same as that of

asked Jan 28, 2014 by sreemathi.v

1 answer

A car owner buys petrol at Rs. 7.50 Rs. 8.00 and Rs. 8.50 per litre for the 3 successive years. If he spends Rs. 4000 each year, then the average cost per litre of petrol is

asked Jan 25, 2014 by thanvigandhi_1

1 answer

$PbS+H_2O_2\rightarrow H_2O$+________

asked Jan 23, 2014 by sreemathi.v

1 answer

The smog is essentially caused by presence of

asked Jan 21, 2014 by sreemathi.v

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The wavelength of the radiations emitted,when in a hydrogen atom electron falls from infinity to stationary state is ($R_H=1.097\times 10^7m^{-1})$

asked Jan 13, 2014 by sreemathi.v

1 answer

The equation of the plane through the point $(1,2,-1)$ and $\perp$ to the line of intersection of the planes $\overrightarrow r.(3\hat i-\hat j+\hat k)=1$ and $\overrightarrow r.(\hat i+4\hat j-2\hat k)=2$ is?

asked Jan 4, 2014 by rvidyagovindarajan_1

1 answer

If n arithmetic means are interested between $0$ and $32$ such that the $2^{nd}$ mean is one-seventh of the $(n-1)^{th}$ mean, find the value of $n$.

asked Jan 3, 2014 by yamini.v

1 answer

The number of points at which the function $f(x)=\large\frac{1}{\log|x|}$ is discontinuous is

asked Dec 24, 2013 by sreemathi.v

1 answer

Integrate: $\int \limits_0^{\rho} \large\frac{y.dy}{\sqrt {y+\rho}}$

asked Dec 17, 2013 by meena.p

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Integrate: $\int \limits_0^{\rho} \large\frac{y.dy}{\sqrt {y+\rho}}$

asked Dec 17, 2013 by meena.p

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Bond dissociation enthalpy of $H_2,CI_2\: and \: HCI$ are 434, 242 and 431 $kJmol^{-1}$ respectively. Enthalpy of formation of HCI is :

asked Dec 16, 2013 by thanvigandhi_1

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Darwinian fitness is lowered from minimum to zero, to check the undue accumulation of deleterious mutations

asked Dec 9, 2013 by thanvigandhi_1

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Ions essential for muscle contraction

asked Dec 2, 2013 by thanvigandhi_1

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$HBr$ is weaker acid than HI due to

asked Nov 28, 2013 by sreemathi.v

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