Recent questions tagged q2

Which of the following pair of transition metal ions, have the same calculated values of magnetic moment?

asked Oct 23, 2013 by meena.p

1 answer

A gas has a vapour density 11.2. The volume occupied by 1g of the gas at NTP is

asked Oct 22, 2013 by sreemathi.v

1 answer

Velocity and acceleration vectors of charged particle moving perpendicular to the direction of a magnetic field at a given instant of time are $\overrightarrow v=2 \hat i+c \hat j$ and $\overrightarrow a=3 \hat i+4 \hat j$ respectively. Then the value of c is

asked Oct 22, 2013 by meena.p

1 answer

The maximum number of molecules present in :

asked Oct 22, 2013 by sreemathi.v

1 answer

Given both $\theta$ and $\phi$ are acute angles and $\sin\theta=\large\frac{1}{2},$$\cos\phi=\large\frac{1}{3}$ then the value of $\theta+\phi$ belongs to

asked Oct 17, 2013 by sreemathi.v

1 answer

If $f: \Re \to \Re$ and $g: \Re \to \Re$ are defined by $f(x) - | x |$ and $g(x)=[x - 3]$ for $ x \in \Re$, then $\bigg \{ g(f(x)):-\large\frac{8}{5} $$ < x < \large\frac{8}{5} \bigg \} -$

asked Oct 16, 2013 by meena.p

1 answer

Identify the correct pair of statements from the following

asked Oct 15, 2013 by thanvigandhi_1

1 answer

The value of $\sin\large\frac{\pi}{14}$$\sin\large\frac{3\pi}{4}$$4\sin\large\frac{5\pi}{14}$$\sin\large\frac{7\pi}{14}$$\sin\large\frac{9\pi}{14}$$\sin\large\frac{11\pi}{14}$$\sin\large\frac{13\pi}{14}$ is equal to

asked Oct 11, 2013 by sreemathi.v

1 answer

$\bigg \{ x \in R :\large\frac{2x-1}{x^3+4x^2+3x} \in $$R \bigg \} =$

asked Oct 8, 2013 by meena.p

1 answer

The number of solution of $\tan x+\sec x=2\cos x$ in $[0,2\pi]$ is

asked Oct 4, 2013 by sreemathi.v

1 answer

Water rises to a height of 20 mm in a capillary . If the radius of the capillary is made $\large\frac{1}{3}$rd of its precious is made then what is the new value of the capillary rise?

asked Oct 2, 2013 by meena.p

1 answer

In a DNA fragment, there are 8 turns, with 40% of the bases are cytosine. What would be the total number of hydrogen bonds present in this DNA fragment?

asked Oct 1, 2013 by thanvigandhi_1

1 answer

Let R denotes the set of all real numbers and $R^{+}$ denote the set of all positive real numbers. For the subsets $A$ and $B$ of R define $f:A \to B$ by $f(x)=x^2$ for $x \in A$. Observe the two lists given below:

asked Sep 26, 2013 by meena.p

1 answer

If [x] denotes the greatest integer not exceeding x and if the function f defined by \[f(x) = \left\{ \begin{array}{l l} \frac{a+2 \cos x}{x^2} & \quad ( x < 0) \\ b\;\tan \frac{\pi}{[x+4]} & \quad (x \geq 0) \end{array} \right. \] is continuous at $x=0,$ then the ordered pair $(a,b)=$

asked Sep 20, 2013 by meena.p

1 answer

$\bigg\{x \in R \bigg | \log \bigg[(1.6)^{1-x^2}-(0.625)^{6(1+x)}\bigg] \in R\bigg\}$=

asked Sep 13, 2013 by meena.p

1 answer

When two dies are thrown. The probability of getting equal number is ................... .

asked Sep 13, 2013 by meena.p

0 answers

In how many ways can 5 red and 4 white balls be drawn from a bag containing 10 red and 8 white balls?

asked Sep 12, 2013 by meena.p

1 answer

An organic compound has an empirical formula $CH_2O$. Its vapour density is 45. The molecular formula of compound is :

asked Sep 11, 2013 by meena.p

1 answer

If surface tension of $H_2O$ is $7.3 \times 10^{-2}\; N/m$. The excess pressure inside spherical drop of radius 1 mm is ............. $N/m^2$.

asked Sep 10, 2013 by meena.p

0 answers

If '$\mathit{c}$' is velocity of light in free space, the time taken by the light to travel a distance '$\mathit{x}$' in a medium of refractive index '$\mu$' is given by :

asked Sep 10, 2013 by meena.p

1 answer

n-propyl bromide would give SN2 reaction under which of the following condition?

asked Sep 4, 2013 by sreemathi.v

1 answer

Refer to the below image : Assuming both the reactions are E1 the expected ratio between $K_H/K_D$ is

asked Aug 23, 2013 by sreemathi.v

1 answer

The reaction $R-Cl+R'ONa$---------->$ROR'+NaCl$.The reaction is catalysed by the addition of small amounts of $NaI$ because

asked Aug 21, 2013 by sreemathi.v

1 answer

Examine if Rolle’s theorem is applicable to any of the following functions. Can you say some thing about the converse of Rolle’s theorem from these example? $(iii)\;f (x) = x^2 - 1 \; for\; x \: \in [1,2] $

asked Aug 16, 2013 by sreemathi.v

1 answer

Examine if Rolle’s theorem is applicable to any of the following functions. Can you say some thing about the converse of Rolle’s theorem from these example? $ (ii)\;f (x) = [x] \; for\; x \: \in [-2,2]$

asked Aug 16, 2013 by sreemathi.v

1 answer

An iron ball and wooden ball of same radius are released from a height 'h' in vacuum. The time taken by both of them to reach ground is

asked Aug 9, 2013 by meena.p

1 answer

Find the maximum and minimum values, if any, of the following functions given by $ (v) \: h (x) =x+1,x\in (-1,1)$

asked Aug 6, 2013 by sreemathi.v

1 answer

Find the maximum and minimum values, if any, of the following functions given by $ (iv) \: f (x) =\mid\sin 4x+3\mid$

asked Aug 6, 2013 by sreemathi.v

1 answer

Find the maximum and minimum values, if any, of the following functions given by $ (iii) \: h(x) = \sin (2x)+5$

asked Aug 6, 2013 by sreemathi.v

1 answer

Find the maximum and minimum values, if any, of the following functions given by $ f (x) = -\mid x+1\mid+3$

asked Aug 6, 2013 by sreemathi.v

1 answer

For each of the exercises given below, verify that the given function (implicit or explicit) is a solution of the corresponding differential equation $( iv)\quad x^2=2y^2 \log y : \qquad (x^2+y^2)\large\frac{dy}{dx}$$-xy=0$

asked Jul 30, 2013 by sreemathi.v

1 answer

Verify that the given function (implicit or explicit) is a solution of the corresponding differential equation

asked Jul 30, 2013 by sreemathi.v

1 answer

Verify that the given function (implicit or explicit) is a solution of the corresponding differential equation

asked Jul 30, 2013 by sreemathi.v

1 answer

Show that $\begin{vmatrix}x+1 &x+2 &x+a\\x+2 &x+3 &x+b\\x+3 &x+4 &x+c\end{vmatrix}=0$ where $a,b,c$ are in A.P.

asked Jul 16, 2013 by sreemathi.v

1 answer

If $C$ is capacity and $V$ is the potential across the condenser, what will be the dimensional representation of $\large\frac{1}{2}$$CV^2$

asked Jun 15, 2013 by meena.p

1 answer

If $x=a+b$,$y=a\omega+b\omega^2,z=a\omega^2+b\omega$ show that (ii) $x^3+y^3+z^3=3(a^3+b^3)$ where $\omega$ is the complex cube root of unity.

asked Jun 12, 2013 by sreemathi.v

1 answer

If $x=a+b$,$y=a\omega+b\omega^2,z=a\omega^2+b\omega$ show that (i) $xyz=a^3+b^3$ where $\omega$ is the complex cube root of unity.

asked Jun 12, 2013 by sreemathi.v

1 answer