Recent questions tagged q57

Each carbon in diamond is __________ hybridization

asked Nov 28, 2013 by sreemathi.v

1 answer

The $pH$ of a solution is 5.00. To this solution, sufficient acid is added to lower the $pH$ to 2.00. The corresponding increase in $H_3O^+$ ion concentration is

asked Nov 27, 2013 by mosymeow_1

1 answer

The frog vertebra with centrum convex on its anterior surface is :

asked Nov 26, 2013 by thanvigandhi_1

0 answers

If $\overrightarrow a,\overrightarrow b,\overrightarrow c$ are three non coplanar vectors, then $[\overrightarrow a+\overrightarrow b+\overrightarrow c\:\overrightarrow a-\overrightarrow c\:\overrightarrow a-\overrightarrow b]=?$

asked Nov 21, 2013 by rvidyagovindarajan_1

1 answer

$ABC$ is a triangle with $\angle A=30^{\large\circ}$ $BC=10$cm.The area of the circumcircle of the $\Delta$le is?

asked Nov 18, 2013 by sreemathi.v

1 answer

The line among the following which touches the parabola $y^2=4ax,$ is :

asked Nov 12, 2013 by meena.p

1 answer

The sides of the rectangle of greatest area that can be inscribed in the ellipse $x^2+4y^2=64$ are:

asked Nov 6, 2013 by meena.p

1 answer

The type of association exhibited by Hydroactinia and pagurus is

asked Oct 28, 2013 by thanvigandhi_1

1 answer

What volume of hydrogen gas at 273K and 1atm pressure will be consumed in obtaining 21.6g of element boron (at.mass=0.8) from the reduction of boron trichloride with hydrogen ?

asked Oct 28, 2013 by sreemathi.v

1 answer

The value of k , if (1,2),(k,1) are conjugate points with respect to the ellipse $2x^2+3y^2=6$ is

asked Oct 25, 2013 by meena.p

1 answer

For an ellipse with eccentricity $\large\frac{1}{2}$ the center is at the orgin. If one directrix is $x=4$, then the equation of the ellipse is

asked Oct 17, 2013 by meena.p

1 answer

This structural gene synthesizes the mRNA that translates the permease protein

asked Oct 17, 2013 by thanvigandhi_1

1 answer

The mid point of the chord $4x-3y=5$ of the hyperbola $2x^2-3y^2=12$ is :

asked Oct 10, 2013 by meena.p

1 answer

Find $\cos 55^{\large\circ}+\cos 65^{\large \circ}+\cos 175^{\large\circ}$

asked Oct 9, 2013 by sreemathi.v

2 answers

Statement (S) : In gastropods, due to torsion mantle cavity is placed anteriorly behind and above the head. Reason (R) : During larval stage, visceral mass, shell and mantle cavity are twisted upto $180^{\circ}$ counter clockwise with respect to the head and foot.

asked Oct 6, 2013 by thanvigandhi_1

1 answer

If the lines $2x+3y+12=0,x-y+k=0$ are conjugate with respect to the parabola $y^2=8x,$ then $k=$

asked Sep 27, 2013 by meena.p

1 answer

Let $A$ and $B$ be events in a sample spaces $S$ such that $P(A)=0.5, P(B)=0.4$ and $P(A \cup B)=0.6$. observe the following lists:

asked Sep 23, 2013 by meena.p

1 answer

If $x=9$ is a chord of contact of the hyperbola $x^2-y^2=9,$ then the equation of the tangent at one of the points of contact is

asked Sep 16, 2013 by meena.p

1 answer

A planet moves in an elliptical orbit with sun at one of its focii <br> 1) In path QRP work done by gravity is positive . <br> 2) In path PSQ work done by gravity is negative . <br> 3) Linear velocity of rotation from Q to P via R decreases. <br> 4) Gravitational potential energy increases in going from P to Q via R

asked Aug 22, 2013 by meena.p

1 answer

Velocity - time graph of a particle moving in a straight line is shown. Mass of particle is 2 kg. What is work done by all the forces on the particle in time interval between $t=0$ to $t=10s$ if velocity goes from $10 ms^{-1}$ to $-20 ms^{-1}$ ?

asked Aug 6, 2013 by meena.p

1 answer

A nozzle is discharging water at a rate of 200 litre per second with a speed of 10 m per second. If the water strikes a wall at right angles and does not bounce of the wall, find the force F newton exerted by the wall on water. mass of 1 litre of the water is 1kg

asked Jul 11, 2013 by meena.p

1 answer

If $u=f\large\left(\frac {y}{x} \right) $ then $x\large\frac{\partial u}{\partial x}$+$y\large\frac{\partial u}{\partial y}$ is equal to

asked May 21, 2013 by poojasapani_1

1 answer

If $(m-5)+i(n+4)$ is the complex conjugate of $(2m+3)+i(3n-2)$ then $(n ,m )$are

asked May 11, 2013 by poojasapani_1

1 answer

Evaluate:\[\int \frac {\sqrt {\cos 2x}}{\sin x}dx\]

asked Feb 3, 2013 by meena.p

0 answers

Sand is pouring from a pipe at the rate of 12cm3/sec. The falling sand forms a cone on the ground in such a way that the height of the cone is always one-sixth of the radius of the base. How fast is the height of the sand cone in increasing when the height is 4 cm?

asked Jan 29, 2013 by meena.p

0 answers

The solution of the differential equation $\cos x\sin y\;dx+\sin x\cos y\;dy=0$ is:

asked Jan 19, 2013 by sreemathi.v

1 answer

$\Large \int\limits_\frac{-\pi}{4}^\frac{\pi}{4}\frac{dx}{1+\cos2x}$ is equal to $(A)\;1\quad(B)\;2\quad(C)\;3\quad(D)\;4$

asked Jan 15, 2013 by sreemathi.v

1 answer

Maximum slope of the curve $y=x^3+3x^2+9x-27$ is

asked Jan 12, 2013 by sreemathi.v

1 answer

If $P(A\cap B)=\Large\frac{7}{10}$,and $P( B)=\Large\frac{17}{20}$,then P(A|B) is equals

asked Jan 10, 2013 by sreemathi.v

1 answer

Find $\large \frac{dy}{dx}$ when x and y are connected by the relation $(x^2+y^2)^2=xy$

asked Jan 2, 2013 by sreemathi.v

1 answer

True or False: Let $\begin{vmatrix}a & p & x\\b & q & y\\c & r & z\end{vmatrix}$ = 16, then $\Delta_1=\begin{vmatrix}p+x & a+x & a+p\\q+y & b+y & b+q\\r+z & c+z & c+r\end{vmatrix}$ = 32

asked Dec 28, 2012 by sreemathi.v

1 answer

If A and B are two matrices of the order $3\times m\;and\;3\times n,$respectively,and m=n,then the order of matrix(5A-2B) is

asked Dec 23, 2012 by sreemathi.v

1 answer

True or False: Let A={0,1} and N be the set of natural numbers.Then the mapping $f:N \rightarrow A$ defined by f(2n-1)=0,f(2n)=1,$\quad n\in N$,is onto.

asked Dec 20, 2012 by sreemathi.v

1 answer

Ask Questions, Get Answers