Recent questions tagged q85

Five long wires $A,B,C,D$ and $E$ each carrying current I are arranged to form edges of a pentagonal prism as shown in figure. Each carries current out of the plane of paper . What if current in one of the wires (say) A is reversed ?

asked Aug 3, 2015 by meena.p

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The declination at a place is $20^{\circ}$ west. In what direction should a ship be stressed so that it reaches geographic north east ?

asked Jul 21, 2015 by meena.p

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Given the resistance of $1\Omega,2 \Omega$ and $3 \Omega$ how will be combine them to get an equivalent resistance of $\large\frac{11}{5}$$\Omega$

asked Jul 6, 2015 by meena.p

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An arbitrary surface enclosed a dipole . what is the electric flux through this surface ?

asked Apr 29, 2015 by meena.p

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An arbitrary surface enclosed a dipole . what is the electric flux through this surface ?

asked Apr 29, 2015 by meena.p

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Given below are the half - cell reactions\begin{array}{1 1}Mn^{2+}+2e^-\rightarrow Mn;E^{\large\circ}=-1.18V\\2(MN^{3+}+e^-\rightarrow Mn^{2+});E^{\large\circ}=-1.18V\end{array}The $E^{\large\circ}$ for $3Mn^{2+}\rightarrow Mn+2Mn^{3+}$ will be

asked Apr 7, 2014 by sreemathi.v

1 answer

The secondary structure of protein refers to

asked Mar 30, 2014 by thanvigandhi_1

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Find the value of logKP for the reaction \[\] $N_2(g) + 3H_2(g) \leftrightharpoons 2NH_3(g) $ \[\] The standard enthalpy of formation of $ NH_3 \: is \: -46\: kJ$. The standard entropies of $N_2(g),\: H_2(g)\: and\: NH_3(g) \: are\: 191, 130\: and\: 192\: J/Kmol$ respectively. $(R = 8.3 \: J/Kmol)$

asked Mar 20, 2014 by thanvigandhi_1

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Zone Refining is based on process of

asked Mar 20, 2014 by meena.p

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Which is not a polymer?

asked Mar 12, 2014 by thanvigandhi_1

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Argenite is a ore of

asked Mar 12, 2014 by meena.p

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In a non polar $AX_2$, the bond moment of $AX$ is 0.56D then the bond angle of $AX_2$ is

asked Mar 7, 2014 by sreemathi.v

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If two compounds have same empirical formula but different molecular formulae, they must have,

asked Feb 26, 2014 by meena.p

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Which of the following is expected to have the lowest boiling point?

asked Feb 25, 2014 by sreemathi.v

1 answer

Calculate the minimum weight of NaOH required to be added in R.H.S to consume all the $H^+$ present in R.H.S of cell of emf to .701V at $25^{\large\circ}C$.Given: $Zn/Zn^{+2}(0.1M)\parallel HCl$(1litre)$/H_2/$(1atm)/P:-$E^0_{Zn/Zn^{+2}}=0.7602$

asked Feb 18, 2014 by sreemathi.v

1 answer

Mole fraction of the component 'A' in vapour phase is X and mol fraction of component 'A' in liquid mixture is Y $(P_A^0$=vapour pressure of pure A,$P_A^0$=vapour pressure of pure B) then total vapour of the liquid mixture is

asked Feb 14, 2014 by sreemathi.v

1 answer

The ecentricity of an ellipse $\large\frac{x^2}{a^2}+\frac{y^2}{b^2}$$=1$ whose latus rectum is half to its major axis is e.Find the value of e?

asked Feb 7, 2014 by sreemathi.v

1 answer

Which of following satisfy the differential equation $y'+2xy=0?$

asked Feb 7, 2014 by meena.p

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If the variance 1,2,3,4,5....10 is $ \large\frac{99}{12}$ then the standard deviation of 3,6,9,12....30 is

asked Jan 31, 2014 by thanvigandhi_1

1 answer

In half wave rectifier if the D.C component at output is $\large\frac{10}{\pi} $$V$ What is the peak value of sinusoidal input signal.

asked Jan 31, 2014 by meena.p

1 answer

Non metals present in borax are

asked Jan 28, 2014 by sreemathi.v

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Polyphosphates are used as water softening agents because they

asked Jan 24, 2014 by sreemathi.v

1 answer

$xNO_2+yH_2O+O_2\rightarrow 4z$.The $y$ is

asked Jan 22, 2014 by sreemathi.v

1 answer

The $n^{th}$ term of series is $\frac{1}{1}$, $\frac{(1+2)}{2}$, $\frac{(1+2+3)}{3}$......is

asked Jan 17, 2014 by yamini.v

1 answer

Calculate the energy required to excite one litre of hydrogen gas at 1atm and 298K to the first excited state of atomic hydrogen.The energy for the dissociation of H-H bond is $463KJmol^{-1}$

asked Jan 15, 2014 by sreemathi.v

1 answer

The angle between the line formed by $3x-7y-5z=1$ and $8x-11y+2z=0$ and the line formed by $5x-13y+3z+2=0$ and $8x-11y+2z=0$

asked Jan 9, 2014 by rvidyagovindarajan_1

1 answer

$\lim\limits_{x\to\large\frac{-\pi}{4}}\large\frac{1+\tan x}{\cos 2x}$=

asked Dec 30, 2013 by sreemathi.v

1 answer

Integrate : $\int \large\frac{\cos 2x}{\cos ^2 x \sin ^2 x }$$dx$

asked Dec 18, 2013 by meena.p

1 answer

In the hydrocarbon

asked Dec 17, 2013 by thanvigandhi_1

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The association between Spherospora polymorpha and Nosema notabilis is :

asked Dec 10, 2013 by thanvigandhi_1

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The number of vectors $\overrightarrow b$ of unit length which are $\perp$ to $\overrightarrow a=\hat i+2\hat j\:\:and\:\:\overrightarrow c=\hat j+2\hat k$ is?

asked Dec 7, 2013 by rvidyagovindarajan_1

1 answer

Loa loa causes the disease

asked Dec 5, 2013 by thanvigandhi_1

0 answers

Which of the following in oxide mineral

asked Nov 29, 2013 by sreemathi.v

1 answer

If equilibrium constant of the reaction of weak acid $HA$ with $NaOH$ is $10^9$, then $pH$ of $0.1\; M\; NaA$ is

asked Nov 27, 2013 by mosymeow_1

1 answer

In benign tertian fever, the erythrocytic schizogony begins with the ~mtry of :

asked Nov 27, 2013 by thanvigandhi_1

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The kinetic energy energy K of a particle of mass 'm' moving along a circle of radius 'R' depends on distance covered 'S' as $K =AS^2$. Then the acceleration of particle is given by :

asked Nov 16, 2013 by thanvigandhi_1

1 answer

A water film is formed on a glass-block. A light ray is incident on water film from air at an angle $60^{\circ}$ with the normal. The angle of incidence on glass slabs is $ \bigg[ \: given\: \mu_g = 1.5,\: \mu_W = \large\frac{4}{3} \bigg] $ :

asked Nov 1, 2013 by thanvigandhi_1

1 answer

In the reaction $2Al(s)+6HCl(aq)\rightarrow 2Al^{3+}(aq)+6Cl^{-1}(aq)+3H_2(g)$

asked Oct 30, 2013 by sreemathi.v

1 answer

Displacement of a body is $( 5 \overrightarrow i+3\overrightarrow j-4\overrightarrow k)m$ when a force $( 6\overrightarrow i+6\overrightarrow j+4\overrightarrow k)N$ acts for 5 sec. The power in watt is

asked Oct 19, 2013 by thanvigandhi_1

1 answer

A river of salty water is flowing with a velocity 2 m/sec. If the density of the water is $1.2\;gm/c.c$, then the kinetic energy of each cubic metre of water is

asked Oct 18, 2013 by meena.p

1 answer

A solution of $\sin^{-1}(1)-\sin^{-1}\big(\large\frac{\sqrt 3}{x^2}\big)$$-\large\frac{\pi}{6}$$=0$ is

asked Oct 11, 2013 by sreemathi.v

1 answer

A body of mass 5 kg makes an elastic collision with another body at rest and continues to move in the original direction after collision direction after collision with a velocity equal to $\large\frac{1}{10}$th of its original velocity. Then the mass of the second body is :

asked Oct 11, 2013 by meena.p

1 answer

Light of wavelength $ \lambda$ from a point source falls on a small circular obstacle of diameter 'd' . dark and bright circular rings around the central bright spot are formed on a screen beyound the obstacle. The distance between the screen and obstacle is D. Then, the condition for the formation of rings is

asked Oct 8, 2013 by thanvigandhi_1

1 answer

A bomb moving with velocity $ (40 \hat i+50 \hat j -25 \hat k)$m/sec explode into two pieces of mass ratio 1:4. After explosion the small piece moves away with velocity $(200 \hat i+70 \hat j+15 \hat k)$ m/sec. The velocity of larger piece after explosion is :

asked Sep 30, 2013 by meena.p

1 answer

The dimensional formula of $\large\frac{1}{2}$$\mu_0H^2(\mu_0$- Permeability of free space and H-magnetic field intensity ) is :

asked Sep 23, 2013 by meena.p

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