Recent questions tagged q52

If a gas expands at constant temperature, it indicates that,

asked Dec 16, 2013 by thanvigandhi_1

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If alpha cells in the pancreas of an adult rabbit are destroyed, the process affected is :

asked Dec 9, 2013 by thanvigandhi_1

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The reptillian character of prototherians is

asked Dec 2, 2013 by thanvigandhi_1

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With excess of $Cl_2$ ammonia forms

asked Nov 28, 2013 by sreemathi.v

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The dissociation constants of four monobasic acids HA, HX, HY and HD are respectively $6 \times 10^{-4}, 5 \times 10^{-5}, 3.6 \times 10^{-6}, 7 \times 10^{-10}$. The $pH$ values of their 0.1 M aqueous solutions is

asked Nov 27, 2013 by mosymeow_1

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The palpiger of cockroach bear's :

asked Nov 26, 2013 by thanvigandhi_1

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If $\overrightarrow a,\overrightarrow b,\overrightarrow c$ are non zero, non collinear vectors such that $\overrightarrow a\times\overrightarrow b=\overrightarrow b\times\overrightarrow c=\overrightarrow c\times\overrightarrow a$, then $\overrightarrow a+\overrightarrow b+\overrightarrow c=?$

asked Nov 19, 2013 by rvidyagovindarajan_1

1 answer

The number of values of $x$ in the interval $[0,3\pi]$ .Satisfying the equation $2\sin^2x+5\sin x-3=0$ is

asked Nov 18, 2013 by sreemathi.v

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In pheretima, the open type of nephridia are located in these segments :

asked Nov 13, 2013 by thanvigandhi_1

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The point collinear with $(1,-2,-3)$ and $(2,0,0)$ among the following is :

asked Nov 12, 2013 by meena.p

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The number of common tangent to the two circles $x^2+y^2-8x+2y=0$ and $x^2+y^2-2x-16y+25=0$ is :

asked Nov 6, 2013 by meena.p

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20ml of 0.1m $H_3BO_3$ solution on complete neutralization requires __________ml of 0.05m $NaOH$ solution

asked Oct 28, 2013 by sreemathi.v

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In rabbit the fungiform papillae that contain taste buds are distributed

asked Oct 27, 2013 by thanvigandhi_1

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The cosine of the angle A of the triangle with vertices $A(1,-1,2), B(6,11,2),C(1,2,6)$ is

asked Oct 25, 2013 by meena.p

1 answer

The angle between the lines whose direction cosines are $\bigg(\large\frac{\sqrt 3}{4},\frac{1}{4},\frac{\sqrt 3}{2}\bigg)$ and $ \bigg(\large\frac{\sqrt 3}{4},\frac{1}{4},\frac{-\sqrt 3}{2} \bigg)$ is

asked Oct 17, 2013 by meena.p

1 answer

Pick the wrong statement from the following with reference to evolution

asked Oct 17, 2013 by thanvigandhi_1

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The points (3,-4) lies on both the cirlces $x^2+y^2-2x+8y+13=0$ and $x^2+y^2-4x+6y+11=0.$ Then the angle between the circles is :

asked Oct 10, 2013 by meena.p

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In a $\Delta ABC$ the value of the expression $cosec A(\sin B\cos C+\cos B\sin C)$ is

asked Oct 9, 2013 by sreemathi.v

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Unloading of oxygen from haemoglobin is enhanced under the following conditions

asked Oct 5, 2013 by thanvigandhi_1

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If the circle $x^2+y^2+2x+3y+1=0$ cuts another circle $x^2+y^2+4x+3y+2=0$ in A and B, then the equation of the circle with AB as a diameter is :

asked Sep 27, 2013 by meena.p

1 answer

If the vectors $\bar {AB}=-3 \bar {i}+ 4 \bar {k}$ and $\bar {AC}=5 \bar {i}-2 \bar j+4 \bar {k} $ are the sides of a triangle ABC, then the length of the medium through A is

asked Sep 23, 2013 by meena.p

1 answer

$(a,0)$ and $(b,0)$ are center of two circles belonging to a co-axial system of which y-axis is the radical axis. If radius of one of the circles is 'r', then the radius of the other circle is

asked Sep 16, 2013 by meena.p

1 answer

The mean radius of earth is R, its angular velocity on its own axis is 'w' and acceleration due to gravity is g. What will be the radius of orbit of a geostationary satellite ?

asked Aug 22, 2013 by meena.p

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A hole is drilled from the surface of earth to its center. A particle is dropped from rest at the surface of earth . The speed of the particle when it reaches the center of the earth in terms of escape velocity of the surface of earth $v_e$ is

asked Aug 5, 2013 by meena.p

1 answer

The coefficient of friction between the block A of mass m and block B of mass 2 m is $\mu$. There is no friction between block B and the inclined plane. If the system of blocks A and B is released from rest and there is no slipping between A and B then

asked Jul 10, 2013 by meena.p

1 answer

The percentage error in the $11^{th}$ root of the number is approximately ______ times the percentage error in $28$.

asked May 21, 2013 by poojasapani_1

1 answer

The shortest distance between the parallel lines $ \large\frac{x-3}{4}=\frac{y-1}{2}=\frac{z-5}{-3} $ and $\large\frac{x-1}{4}=\frac{y-2}{2}=\frac{z-3}{3}$ is

asked May 11, 2013 by poojasapani_1

1 answer

Evaluate:\[\int S \sqrt {\tan \theta} d\theta\]

asked Feb 3, 2013 by meena.p

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Show that the semi vertical angle of the cone of maximum volume and of given slant height is $ \tan ^{-1} \sqrt 2$

asked Jan 29, 2013 by meena.p

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The solution of $\Large \frac{dy}{dx}\normalsize +y=e^{-x},y(0)=0$ is:\begin{array}{1 1}(A)\;y=e^x(x-1) & (B)\;y=xe^{-x}\\(C)\;y=xe^{-x}+1 & (D)\;y=(x+1)e^{-x}\end{array}

asked Jan 18, 2013 by sreemathi.v

1 answer

$\Large \int\frac{x^9}{(4x^2+1)^6}\normalsize dx $ is equal to\begin{array}{1 1}(A)\;\frac{1}{5x}\bigg(4+\frac{1}{x^2}\bigg)^{-5}+C & (B)\;\frac{1}{5}\bigg(4+\frac{1}{x^2}\bigg)^{-5}+C\\(C)\;\frac{1}{10x}(1+4)^{-5}+C & (D)\;\frac{1}{10}\bigg(\frac{1}{x^2}+4\bigg)^{-5}+C\end{array}

asked Jan 15, 2013 by sreemathi.v

1 answer

If x is real,the minimum value of $x^2-8x+17$ is

asked Jan 11, 2013 by sreemathi.v

1 answer

A bag contains (2n+1) coins.It is known that n of these coins have a head on both sides where as the rest of the coins are fair.A coin is picked up at random from the bag and is tossed.If the probability that the toss results in a head is $\Large \frac{31}{42}$,determine the value of n.

asked Jan 9, 2013 by sreemathi.v

1 answer

Differentiate $\large \frac{x}{\sin x}\;\normalsize w.r.t\;\sin x.$

asked Dec 31, 2012 by sreemathi.v

1 answer

True or False: If the value of a third order determinant is 12,then the value of the determinant formed by replacing each element by its co-factor will be 144.

asked Dec 28, 2012 by sreemathi.v

1 answer

Express the matrix $\begin{bmatrix}2 & 3 & 1\\1 & -1 & 2\\4 & 1 & 2\end{bmatrix}\;$as the sum of symmetric and skew symmetric matrices P&Q.

asked Dec 23, 2012 by sreemathi.v

1 answer

True or False: The least numerical value, either positive or negative of angle $\theta$ is called principal value of the inverse trigonometric function.

asked Dec 21, 2012 by sreemathi.v

1 answer

If $f(x)=(4-(x-7)^3\},then\;f^{-1}(x)$=____________.

asked Dec 20, 2012 by sreemathi.v

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