Recent questions tagged class12

If the lines $\large\frac{2x-1} {-3} = \frac{y-2}{2k} = \frac{z-3}{2}$ and $\large\frac{x-1}{3k} = \frac{1-2y}{1} = \frac{z-6}{-5}$ are perpendicular, find the value of k.

asked Feb 3, 2014 by rvidyagovindarajan_1

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General solution of following differential $\in a ^n$ differential equations of a family of circles passing through the origin and having centre on the x axis

asked Feb 3, 2014 by meena.p

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As the temperature of the conductor increases, the ratio of resistivity to conductivity

asked Feb 3, 2014 by thanvigandhi_1

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Which of the following quantity associated with the resistor, does not change with temperature

asked Feb 3, 2014 by thanvigandhi_1

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Different equation of all parabola with x axis as the axis and $(a,0)$ as the focus

asked Feb 3, 2014 by meena.p

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The net resistance of a voltmeter should be large to ensure that

asked Feb 3, 2014 by thanvigandhi_1

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Find $|\overrightarrow x|$, if for a unit vector $\overrightarrow a,\:(\overrightarrow x-\overrightarrow a).(\overrightarrow x+\overrightarrow a)=15$

asked Feb 3, 2014 by rvidyagovindarajan_1

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The net resistance of an ammeter should be small to ensure that

asked Feb 3, 2014 by thanvigandhi_1

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Consider the charging of a capacitor. Let $Q_1$ be the charge given to it in first t seconds and $Q_2$ be the charge given to it in the next t seconds. Also, let $t_1$ be the time required to deposit a charge Q (less than half the maximum charge) and $t_2$ be the time required to deposit an additional charge of Q, then:

asked Feb 3, 2014 by thanvigandhi_1

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Differential equation of all parabola with x axis as the axis and 4a as latus rectum .

asked Feb 3, 2014 by meena.p

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The differential equation of the following equation $y=ae^{2x} +be^{-3 x} +ce^{x}$

asked Feb 3, 2014 by meena.p

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In an electric circuit containing a battery, the charge (positive by convention) inside the battery

asked Feb 3, 2014 by thanvigandhi_1

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(Crystal Field Theory) Strong field ligands such as $CN^-$:

asked Feb 3, 2014 by sreemathi.v

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Solution of the general equation : $\large\frac{dy}{dx}$$=\cos (x+y) - \sin (x+y) $

asked Feb 3, 2014 by meena.p

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(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

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Find the degree of the following differential equation $\bigg(\large\frac{d^2 y}{dx^2}\bigg)^{1/2} =\bigg( \large\frac{dy}{dx}+3\bigg)^{1/3}$

asked Feb 3, 2014 by meena.p

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The work done in placing a charge of $\;8\times10^{-18}\;$ coulomb on a condenser of capacity 100 micro-farad is

asked Feb 3, 2014 by yamini.v

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$\large\frac{dy}{dx} =\large\frac{y+x+1}{y+x +5}$

asked Feb 3, 2014 by meena.p

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Four dipols each of magnitudes of charges $\;\pm q\;$ are placed inside a sphere . The total flux of $\overrightarrow{E}\;$ coming out of the sphere is

asked Feb 3, 2014 by yamini.v

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(Crystal Field Theory) Consider the complex ion $[Mn(OH_2)_6]^{2+}$ with 5 unpaired electrons. Which response includes all the following statements that are true, and no false statements?

asked Feb 3, 2014 by sreemathi.v

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If the sum of two unit vector is a unit vector, then what is the angle between them?

asked Feb 3, 2014 by rvidyagovindarajan_1

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(Crystal Field Theory) How many unpaired electrons are there in a strong field iron(II) octahedral complex?

asked Feb 3, 2014 by sreemathi.v

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Find the solution of differential equation : $\large\frac{dy}{dx}=\frac{x^2+y^2}{xy}$

asked Feb 3, 2014 by meena.p

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(Crystal Field Theory) When the valence d orbitals of the central metal ion are split in energy in an octahedral ligand field, which orbitals are raised least in energy?

asked Feb 3, 2014 by sreemathi.v

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(Crystal Field Theory) Which one of the following statements is FALSE?

asked Feb 3, 2014 by sreemathi.v

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The coordination complex, $[Cu(OH_2)_6]^{2+}$ has one unpaired electron. Which of the following statements are true?

asked Feb 3, 2014 by sreemathi.v

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Two isolated charged conducting spheres of radii a and b produce the same electric field near their surfaces . The ratio of electric potential on their surfaces is

asked Feb 3, 2014 by yamini.v

1 answer

Let $g(n) $ is a continuous differential function which takes positive value for $ x \leq 0$ and satisfy $\int \limits_0^2 g(t) dt = x \sqrt {g(x)} $ with $f(1) =V_2$. find the value of $f(\sqrt 2 +1)$

asked Feb 3, 2014 by meena.p

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In which one of the following species does the transition metal ion have $d^3$ electronic configuration?

asked Feb 3, 2014 by sreemathi.v

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A molecule that cannot be superimposed on its mirror image is said to exhibit which of the following?

asked Feb 3, 2014 by sreemathi.v

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Given $y(0) =2000$ and $\large\frac{dy}{dx} =3200-20y^2$ then find the value of $\displaystyle\lim _{x \to \infty} y(n)$

asked Feb 3, 2014 by meena.p

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Three concentric conducting spherical shells carry charges +4Q on the inner shell , -2Q on the middle shell and +6Q on the outer shell . The charge on the inner surface of outer shell is

asked Feb 3, 2014 by yamini.v

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General solution of differential equation : $ (1-x^2)(1-y)dx -xy (1+y) dy=0$

asked Feb 3, 2014 by meena.p

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Which one of the following complexes can exhibit geometrical isomerism?

asked Feb 3, 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

Solve: $xe^y dy -e^y dx=0$

asked Feb 3, 2014 by meena.p

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General solution of differential equation : $x^2e^y dy - (x-1) e^x dx=0$

asked Feb 3, 2014 by meena.p

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What is the oxidation number of the central metal atom in the coordination compound $[Pt(NH_3)_3Cl]Cl?$

asked Feb 3, 2014 by sreemathi.v

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Which name-formula combination is NOT correct?

asked Feb 3, 2014 by sreemathi.v

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General solution of differential equation $x dy -y dx=0$

asked Feb 3, 2014 by meena.p

1 answer

Select the correct IUPAC name for: $[Co(NH_3)_6]^{2+}$

asked Feb 3, 2014 by sreemathi.v

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The electric field in a region is given by $\;\overrightarrow{E}=\alpha \hat{i}+\beta \hat{j}\;.$ Here $\;\alpha\; and \; \beta\;$ are constants . The net flux through a square are of side l parallel to y - z plane

asked Feb 3, 2014 by yamini.v

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General solution of differential equation : $x dy +y dx=0$

asked Feb 3, 2014 by meena.p

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Select the correct IUPAC name for: $[FeF_4(OH_2)_2]^-$

asked Feb 3, 2014 by sreemathi.v

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Given the list of ligands and their corresponding names, choose the pair that disagree.

asked Feb 3, 2014 by sreemathi.v

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Consider the coordination compound,$K_2[Cu(CN)_4]$.A coordinate covalent bond exists between

asked Feb 3, 2014 by sreemathi.v

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ABC is an equilateral triangle of each side 5 cm . Two charges of $\;\pm\large\frac{50}{3}\times10^{-3}\;\mu C\;$ are placed at B and A respectively . Find the magnitude of resultant field at C .

asked Feb 3, 2014 by yamini.v

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Consider the coordination compound,$Na_2[Pt(CN)_4]$.The Lewis acid is

asked Feb 3, 2014 by sreemathi.v

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In coordination chemistry, the donor atom of a ligand is

asked Feb 3, 2014 by sreemathi.v

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The ________ sphere is enclosed in brackets in formulas for complex species, and it includes the central metal ion plus the coordinated groups.

asked Feb 3, 2014 by sreemathi.v

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