Recent questions tagged q58

An electron is projected with uniform velocity at the axis of a current carrying long solenoid. Which of the following is true ?

asked Jul 29, 2015 by meena.p

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Consider the plane S formed by the dipole axis and the axis of earth . Let P be point of intersection of the geographical and magnetic equators. Obtain the declination and dip angles at P and Q.

asked Jul 16, 2015 by meena.p

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How does the fuse wire save the electrical installation?

asked Jun 30, 2015 by meena.p

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When a glass red is rubbed with a silk cloth, charge appear on both. A similar phenomenou is observed many other pairs of bodies. Explain how this phenomenon is consistent with the land of conservation charges.

asked Apr 27, 2015 by meena.p

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The distance between the foci of a hyperbola is $16$ and its eccentricity is $\sqrt 2$.Its equation is

asked Oct 17, 2014 by sreemathi.v

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Which of the following precipitate of silver is not yellow ?

asked Jul 31, 2014 by thanvigandhi_1

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Which of the following statement is incorrect ?

asked Jul 27, 2014 by thanvigandhi_1

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Match the question given under Column $C_1$ with their appropriate answer given under the Column $C_2$ for the following : The value of the $ \lambda$, if the lines $(2x + 3y + 4) +\lambda (6x – y + 12) = 0 $ are

asked Jul 9, 2014 by thanvigandhi_1

1 answer

True-or-False:A candidate is required to answer 7 questions out of 12 questions which are divided into two groups,each containing 6 questions. He is not permitted to attempt more than 5 questions from either group. He can choose the seven questions in 650 ways.

asked May 16, 2014 by sreemathi.v

1 answer

If $\tan \theta=\large\frac{a}{b}$,then $b\cos 2\theta+a\sin 2\theta$ is equal to

asked Apr 21, 2014 by sreemathi.v

1 answer

The angle between the lines whose direction cosines satisfy the equations $1+m+n=0$ and $1^2=m^2+n^2$ is

asked Apr 7, 2014 by meena.p

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Which base is present in RNA but not in DNA?

asked Mar 29, 2014 by thanvigandhi_1

1 answer

Mac Arthur process is used for

asked Mar 18, 2014 by meena.p

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On the basis of the following thermo chemical data $ [ \Delta G_f^{\circ} (H^+ )(aq) = 0] $ \[\] $H_2O(l) \rightarrow H^+ (aq) + OH^-(aq);\: \: \: \: \: \Delta H = 57.32\: kJ $ \[\] $H_2(g) + \large\frac{1}{2} (g) \rightarrow H_2O(l); \: \: \: \: \: \: \Delta H = -286\: kJ$ \[\] The value of enthalpy of formation of $OH^-\: ion $ at $25^{\circ}C$ is

asked Mar 17, 2014 by thanvigandhi_1

1 answer

Given the polymers arrange them in the decreasing order of their inter molecular forces: A=Nylon 6,6 B = Buna-S and C=Polythene.

asked Mar 11, 2014 by thanvigandhi_1

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The number of lone pairs are located in equatorial position of $ClF_3$

asked Mar 6, 2014 by sreemathi.v

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The maximum $'S'$ character is in

asked Mar 5, 2014 by sreemathi.v

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In the below reaction X and Y are respectively

asked Mar 4, 2014 by sreemathi.v

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Resonance structure of a molecule should (i) Identical arrangements of atoms. (ii) nearly the same energy content. (iii) the same number of paired electrons. (iv) identical bonding

asked Feb 24, 2014 by meena.p

1 answer

Predict the product in the following reaction:

asked Feb 21, 2014 by sreemathi.v

1 answer

The $E_{cell}$ in which the reaction :$MnO_4^-+Fe^{+2}+H^+\rightarrow Mn^{+2}+Fe^{+3}+H_2O$ occurs is 0.59V at $25^{\large\circ}C$.The equilibrium constant for the reaction is

asked Feb 17, 2014 by sreemathi.v

1 answer

A ratio active substance dis integrals at a rate proportional to amount of substance present. $50 \%$ of amount disintegrates in $1000$ years. Approximately what $\%$ of substance will disintegrate in $50$ years ?

asked Feb 6, 2014 by meena.p

1 answer

Find the area of triangle by tangents at the point $P(at_1^2,2at_1)$ & $Q(at_2^2,2at_2)$ for the parabola $y^2=4ax$ .

asked Feb 6, 2014 by sreemathi.v

1 answer

Which name-formula combination is NOT correct?

asked Feb 3, 2014 by sreemathi.v

1 answer

Variable valency is shown by

asked Jan 30, 2014 by sreemathi.v

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The emitter current in a transistor is $ 1mA$ If $\alpha =0.95$ value of base current is :

asked Jan 28, 2014 by meena.p

1 answer

Hardening of plaster of paris is because of

asked Jan 28, 2014 by sreemathi.v

1 answer

The A.M of $ nC_0, \: nC_1, nC_2.......nC_n$ is

asked Jan 25, 2014 by thanvigandhi_1

1 answer

Decomposition of $H_2O_2$ is prevented by adding

asked Jan 23, 2014 by sreemathi.v

1 answer

Increase in concentration of pollutant by the process of food chains is called

asked Jan 21, 2014 by sreemathi.v

1 answer

Which set is correct for an electron in $4f-$orbital?

asked Jan 13, 2014 by sreemathi.v

1 answer

The equation of the plane through origin and the line of intersection of the planes $\overrightarrow r.\overrightarrow a=\lambda\:\:and\:\:\overrightarrow r.\overrightarrow b=\mu$ is ?

asked Jan 3, 2014 by rvidyagovindarajan_1

1 answer

In the series 2,10,50 ------ the number of terms required to make a sum of 7812 is

asked Jan 3, 2014 by yamini.v

1 answer

The value of $f(0)$ so that the function $f(x)=\large\frac{2x-\sin^{-1}x}{2x+\tan^{-1}x}$ is continuous at each point on its domain is

asked Dec 24, 2013 by sreemathi.v

1 answer

Integrate: $ \int\limits _0^{\pi} e^x \sin x dx$

asked Dec 17, 2013 by meena.p

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