Recent questions tagged q65

A changed partice would continue to move with a constant velocity in a region where in ,

asked Jul 30, 2015 by meena.p

1 answer

How does the magnetic moment of each part of the bar magnet . change if it is cut into two equal pieces along its length ?

asked Jul 20, 2015 by meena.p

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In a potentiometer arrangement, a cell of emt $1.25\;V$ gives a balance point at $35. 0\;cm$ length of the wire. If the cell is replaced by another cell and the balance point shifts $63.0\;cm$, What is the emf of the second cell ?

asked Jul 1, 2015 by meena.p

1 answer

A point charge $+10 \mu c$ is at a distance $5\;cm$ directly above the center of a square of side $10\;cm$ , as shown in fig. What is the magnitude of the electric flux through the square . (Hint : Think of the square as one face of a cube with edge 10 cm)

asked Apr 27, 2015 by meena.p

1 answer

$3(\sin x-\cos x)^4+6(\sin x+\cos x)^2+4(\sin ^6x+\cos ^6x)$=_______

asked May 20, 2014 by sreemathi.v

1 answer

CsCl crystallises in body centred cubic lattice. If 'a' is its edge length then which of the following expressions is correct ?

asked Apr 7, 2014 by sreemathi.v

1 answer

The nucleic acid base having two possible binding sites is

asked Mar 29, 2014 by thanvigandhi_1

1 answer

The enthalpy changes for the following processes are listed below \[\] $Cl_2(g) = 2Cl(g),\: \: \: \: \: 242.3\: kJ/mol$ \[\] $I_2(g) = 2I(g), \: \: \: \: \: 151\: kJ/mol$ \[\] $ ICl(g) = I(g) + Cl(g),\: \: \: 211.3 \: kJ/mol$ \[\] $ I_2(s) = I_2(g),\: \: \: \: 62.76\: kJ/mol$ \[\] Given that the standard states for iodine and chlorine are $I_2(g)\: and \: Cl_2(g)$, the standard enthalpy of formation of $ICl(g)$ is

asked Mar 18, 2014 by thanvigandhi_1

1 answer

When the sample of copper with zinc impurity is to be purified by electrolysis, the appropriate electrodes are?

asked Mar 18, 2014 by meena.p

2 answers

The monomer of polystyrene is

asked Mar 12, 2014 by thanvigandhi_1

1 answer

The hybridisation of I in $IF_7$ molecule is

asked Mar 6, 2014 by sreemathi.v

1 answer

In the following reaction the structure of the major product D is

asked Mar 4, 2014 by sreemathi.v

1 answer

The average energy flux of sunlight is $1\: kW/m^2$. This energy is falling normally on the plate surface of area $10\: cm^2$ which completely absorbs the energy. How much force is exerted on the plate if it is exposed to sunlight for 20 minutes?

asked Mar 1, 2014 by thanvigandhi_1

1 answer

The correct statement(s) concerning the structures $E, F$ and $G$ is (are) (i) E,F and G are resonance structures (ii) E,F and E,G are tautomers (iii) F and G are geometrical isomers. (iv) F and G are diastereomers.

asked Feb 25, 2014 by meena.p

1 answer

In the below reaction :

asked Feb 24, 2014 by sreemathi.v

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Two glass bulbs with equal volume are connected by a narrow tube and filled with a gas at $0^{\large\circ}C$ and pressure of $76\;cm\; Hg$ . One of the bulb is then placed in a water bath maintained at $62^{\large\circ}C$. What is the new value of the pressure inside the bulbs? The volume of the connecting tube is negligible.

asked Feb 20, 2014 by sharmaaparna1

1 answer

A zinc rod is placed in $0.1\;M$ solution of $ZnSO_4$ at $25^{\large\circ}$C.Assuming that the salt is dissociated to the extent of $95\%$ at this dilusion ,then the potential of electrode at this temperature.Given that $E^0_{Zn^{2+}/Zn}=0.76Volts$.

asked Feb 17, 2014 by sreemathi.v

1 answer

Find the solution : $-x dy +(y+\sqrt {xy})dx=0$

asked Feb 6, 2014 by meena.p

1 answer

Find the vertex,lactus rectum,axis and the directix of the parabola $(y-2)^2=4(x-1)$?

asked Feb 6, 2014 by sreemathi.v

1 answer

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

asked Feb 3, 2014 by sreemathi.v

1 answer

Which statement is true about the transitional elements

asked Jan 30, 2014 by sreemathi.v

1 answer

The following figure has two NOT gates and a NOR. What does it represent?

asked Jan 29, 2014 by meena.p

1 answer

Which does not form peroxides?

asked Jan 28, 2014 by sreemathi.v

1 answer

Geometric mean of $ 1, 2, 2^2, 2^3.....2^n$ is

asked Jan 25, 2014 by thanvigandhi_1

1 answer

$H_2O_2$ reacts with acidified $K_2Cr_2O_7$ the product formed is

asked Jan 24, 2014 by sreemathi.v

1 answer

Which of the reason is cause to premature delivery

asked Jan 21, 2014 by sreemathi.v

1 answer

The "spin-only" magnetic moment [in units of Bohr magneton,$(\mu_B)$] of $Ni^{2+}$ in aqueous solution would be (Atomic no Ni=28)

asked Jan 13, 2014 by sreemathi.v

1 answer

Find the value of $n$ such that the $n^{th}$ term of the sequences 27,24,21------- and 2,4,6----- are equal.

asked Jan 5, 2014 by yamini.v

1 answer

The line joining the points $6\overrightarrow a-4\overrightarrow b-5\overrightarrow c$ and $-4\overrightarrow c$ and the line joining the points $-\overrightarrow a-2\overrightarrow b-3\overrightarrow c$ and $\overrightarrow a+2\overrightarrow b-5\overrightarrow c$ Intersects at the point ?

asked Jan 5, 2014 by rvidyagovindarajan_1

1 answer

$\lim\limits_{x\to \infty}\big(\large\frac{x+a}{x+b}\big)^{x+b}$=

asked Dec 24, 2013 by sreemathi.v

1 answer

Integrate : $\int \limits _0^{\frac{\pi}{4}} \large\frac{\sec x cosec x}{\log (\tan x)}$$dx$

asked Dec 17, 2013 by meena.p

1 answer

For the gas phase reaction, $PCI_5(g) \leftrightharpoons PCI_3(g) +CI_2 (g)$ which of the following conditions are correct ?

asked Dec 16, 2013 by thanvigandhi_1

0 answers

A fresh water fish :

asked Dec 9, 2013 by thanvigandhi_1

0 answers

Based on the experiments conducted by Bridges on Drosophila, the female *** of the Drosophila is determined by the genes located on which chromosomes ?

asked Dec 5, 2013 by thanvigandhi_1

0 answers

If $\overrightarrow a,\:\overrightarrow b\:and\:\overrightarrow c$ are non coplanar vectors and if $\overrightarrow a'=\large\frac{\overrightarrow b\times \overrightarrow c}{[\overrightarrow a\:\overrightarrow b\:\overrightarrow c]},\:\overrightarrow b'=\large\frac{\overrightarrow c\times \overrightarrow a}{[\overrightarrow a\:\overrightarrow b\:\overrightarrow c]},\:and \:\overrightarrow c'=\large\frac{\overrightarrow a\times \overrightarrow b}{[\overrightarrow a\:\overrightarrow b\:\overrightarrow c]},$ then $\overrightarrow a.\overrightarrow a'+\overrightarrow b.\overrightarrow b'+\overrightarrow c.\overrightarrow c'=?$

asked Nov 29, 2013 by rvidyagovindarajan_1

1 answer

The colour of cobalt metaborate is

asked Nov 28, 2013 by sreemathi.v

1 answer

$pK_b$ of $NH_3$ is 4.74. The $pH$ when 100 mL of 0.01 M $NH_3$ solution is 50% neutralised by 0.01 M HCl is,

asked Nov 27, 2013 by mosymeow_1

1 answer

The reptile which lacks ***** belonging in

asked Nov 26, 2013 by thanvigandhi_1

0 answers

Mitral valve is :

asked Nov 14, 2013 by thanvigandhi_1

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If $f(x) =10 \cos x +(13+2x) \sin x$ then $f''(x)+f(x)$ is equal to :

asked Nov 13, 2013 by meena.p

1 answer

If $l_1=\lim \limits _{x \to 2^{+}} (x+[x]). l_2 \lim \limits_{x \to 2^{-}} (2x-[x])$ and $l_3=\lim \limits_{x \to x/2} \large\frac{\cos x}{(x-\pi/2)}$ then :

asked Nov 6, 2013 by meena.p

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