Recent questions tagged q60

The dissociation constant of certain weak acid HA is $1 \times 10^{-4}$. The equilibrium constant for its reaction with strong base BOH is

asked Nov 27, 2013 by mosymeow_1

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Sodium tauroglycholate aids in

asked Nov 26, 2013 by thanvigandhi_1

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If $\overrightarrow u,\overrightarrow v,\overrightarrow w$ are non coplanar vectors and $p,q$ are real numbers so that $[3\overrightarrow u\:p\overrightarrow v\:p\overrightarrow w]-[p\overrightarrow v\:p\overrightarrow w\:q\overrightarrow u]-[2\overrightarrow w\:q\overrightarrow v\:q\overrightarrow u]=0$ then number of values of $p,q$ is

asked Nov 22, 2013 by rvidyagovindarajan_1

1 answer

Find the maximum and minimum value of $\sin^6x+\cos^6x$

asked Nov 18, 2013 by sreemathi.v

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Ductus Botalli connects :

asked Nov 13, 2013 by thanvigandhi_1

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$\lim \limits_{x \to 0} x^2 \sin \large\frac{\pi}{x}$ is equal to :

asked Nov 12, 2013 by meena.p

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If $x^y=y^x$. then $x(x-y \log x) \large\frac{dy}{dx}$ is equal to :

asked Nov 6, 2013 by meena.p

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Tassar silk is secreted by :

asked Oct 30, 2013 by thanvigandhi_1

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To neutralize completely 20ml of 0.1m aqueous solution of phosphorus $(H_3PO_3)$ acid the volume of 0.1m aqueous KOH solution required is

asked Oct 28, 2013 by sreemathi.v

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$\lim \limits_{x \to 2} \large\frac{e^x-e^{\sin x}}{2(x- \sin x)}$

asked Oct 26, 2013 by meena.p

1 answer

Match the following

asked Oct 17, 2013 by thanvigandhi_1

1 answer

$\lim \limits_{x \to 0} \large\frac{(1-e^x) \sin x}{x^2+x^3}=$

asked Oct 17, 2013 by meena.p

1 answer

If a line in the space makes angles $\alpha, \beta$ and $\gamma$ with the coordinate axes, then $ \cos 2 \alpha+ \cos 2 \beta+\cos 2 \gamma +\sin ^2 \alpha +\sin ^2 \beta+\sin ^2 \gamma=$

asked Oct 10, 2013 by meena.p

1 answer

$\large\frac{1-\tan^2(45^{\large\circ}-A)}{1+\tan^2(45^{\large\circ}-A)}$ is equal to

asked Oct 9, 2013 by sreemathi.v

1 answer

Match the correct pairs in List-I and List-II with reference to Pheretima

asked Oct 6, 2013 by thanvigandhi_1

1 answer

If $\alpha, \beta,\gamma$ are the roots of the equation $x^3-6x^2+11x-6=0$ and if $a= \alpha ^2+\beta^2+\gamma^2, \;b= \alpha \beta + \beta \gamma+ \gamma \alpha$ and $ c= (\alpha+\beta)(\beta+\gamma)(\gamma+\alpha),$ then the correct inequality among the following is :

asked Sep 27, 2013 by meena.p

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The locus of a point such that the sum of its distance from the points $(0,2)$ and $(0,-2)$ is $6,$ is

asked Sep 23, 2013 by meena.p

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The direction ratio's of two lines $AB,AC$ are $1,-1,-1$ and $2,-1,1.$ The direction ratios of the normal to the plane $ABC$ are

asked Sep 16, 2013 by meena.p

1 answer

What is the acceleration due to gravity at surface of mass if its diameter is $6760\;km$ and mass is one tenth that of earth. The diameter of earth is $12742\;km$ acceleration due to gravity on earth $=9.8 m/s^2$

asked Aug 23, 2013 by meena.p

1 answer

A car is moving with a constant speed of $20 ms^{-1}$ against a resistive force of $100 \;N$. The power exerted by the car is

asked Aug 6, 2013 by meena.p

1 answer

A car of mass m is driven with an acceleration 'a' along a straight level road. against a constant external resistive force R. The velocity of the car is V, the rate at which the engine of the car is doing work is

asked Jul 11, 2013 by meena.p

1 answer

The value of $\int\limits_{0}^{\pi/2}\large\frac{\cos^{5/3}x}{\cos^{5/3}x+\sin^{5/3}x}$$dx$ is

asked May 21, 2013 by poojasapani_1

1 answer

If $A+iB=(a_{1}+ib_{1})(a_{2}+ib_{2})(a_{3}+ib_{3}) $ then $A^{2}+B^{2}$is

asked May 11, 2013 by poojasapani_1

1 answer

Evaluate:\[\int \frac {dx}{x(x^7+1)}\]

asked Feb 3, 2013 by meena.p

0 answers

A balloon which always remains spherical is being inflated by pumping in gas at the rate of $900\; cm^3$/sec. Find the rate at which the radius of the balloon is increasing when the radius of the balloon is 15 cm

asked Jan 29, 2013 by meena.p

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Family $Y=Ax+A^3$ of curves will correspond to a differential equation of order \[(A)\;3\quad(B)\;2\quad(C)\;1\;(D)\;not\;defined\]

asked Jan 19, 2013 by sreemathi.v

1 answer

$\int\Large{\frac{x+3}{(x+4)^2}}\normalsize e^xdx$=___________.

asked Jan 15, 2013 by sreemathi.v

1 answer

The curves $y=4x^2+2x-8$ and $y=x^3-x+13$ touch each other at the point_________.

asked Jan 12, 2013 by sreemathi.v

1 answer

If A and B are two events such that $P(A)=\Large\frac{1}{2},\normalsize P(B)=\Large\frac{1}{3},\normalsize P(A/B)=\Large \frac{1}{4},$then $P(A'\cap B')$ equals

asked Jan 10, 2013 by sreemathi.v

1 answer

If $y^{\large x}=e^{\large y-x},prove\;that\;\large {\frac{dy}{dx}=\frac{(1+logy)^2}{log y}}$

asked Jan 2, 2013 by sreemathi.v

1 answer

The matrix $\begin{bmatrix}1 & 0 & 0\\0 & 2 & 0\\0 & 0 & 4\end{bmatrix}$ is a

asked Dec 23, 2012 by sreemathi.v

1 answer

True or False: The composition of functions is associative

asked Dec 20, 2012 by sreemathi.v

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