Recent questions tagged q101

The hydrolysis product of lactose are

asked Mar 31, 2014 by thanvigandhi_1

1 answer

For the curve $\sqrt x + \sqrt y=1,\large \frac{dy}{dx}$ at $\bigg(\large\frac{1}{4},\frac{1}{4}\bigg)$ is ____________.

asked Mar 26, 2014 by balaji.thirumalai

1 answer

A gas in an open container is heated from $27^{\large\circ}C$ to $127^{\large\circ}C$. The fraction of the original amount of gas remaining in the container will be

asked Feb 28, 2014 by sharmaaparna1

1 answer

An organic acid ($X$) has molecular formula $C_8H_{16}O_2$ $X$ on heating with $NH_3$ forms $Y$ which on treatment with alkaline $Br_2$ forms $Z$.$Z$ on treatment with $HNO_2$ followed by heating with $H_2SO_4$ gives $2$,$4$-dimethyl-$2$-pentene.What are the structures of $X$ and $Z$?

asked Feb 26, 2014 by sreemathi.v

1 answer

The hyperbola whose transverse and conjugate axes respectively the conjugate and transverse axes of given hyperbola is called

asked Feb 10, 2014 by sreemathi.v

1 answer

If in an AP , $\;m^{th}$ term is $\;\frac{1}{n}$ and $\;n^{th}\;term\;is\frac{1}{m}$ , then $\;mn^{th}$ term is :

asked Jan 20, 2014 by yamini.v

1 answer

An electron moves in an electric field with a kinetic energy of 2.5eV.What is the associated De-Broglie wavelength?

asked Jan 16, 2014 by sreemathi.v

1 answer

For a real number y, let [y] denotes the greatest integer less than or equal to y. Then the function $f(x)=\large\frac{\tan(\pi[x-\pi])}{1+[x]^2}$ is

asked Dec 31, 2013 by sreemathi.v

1 answer

The vector $\overrightarrow a=\alpha\hat i+2\hat j+\beta\hat k$ lies in the plane of the vectors $\overrightarrow b=\hat i+\hat j$ and $\overrightarrow c=\hat j+\hat k$ and bisects the angle between $\overrightarrow b\:\:and\:\:\overrightarrow c$, then $(\alpha,\beta)=?$

asked Dec 29, 2013 by rvidyagovindarajan_1

1 answer

Integrate : $\int \sin 4x \cos 4x\;dx$

asked Dec 19, 2013 by meena.p

1 answer

Select one of the following pairs of important features distinguishing Gnetum from cycas and pinus and showing affinities with angiosperms :

asked Dec 18, 2013 by thanvigandhi_1

0 answers

A source of sound producing wavelength of 50 cm is moving away from stationary observer with $ \large\frac{1}{5}th $ speed of sound. Then, what is the wavelength of sound heard by observer ?

asked Nov 17, 2013 by thanvigandhi_1

1 answer

The time period of a simple harmonic motion is 8s. At t=0 , it is at its equilibrium position. The ratio of distances traversed by it in the first and second seconds is :

asked Nov 2, 2013 by thanvigandhi_1

1 answer

Equal masses of three liquids, A, B and C have temperatures $ 10^{\circ}C, 25^{\circ}C \: and \: 40^{\circ}C$ respectively. If A and B are mixed, the mixtures has a temperature of $15^{\circ}C$. If B and C are mixed, the mixtures has a temperature of $30^{\circ}C$. If A and C are mixed, the temperature of the mixture is

asked Oct 20, 2013 by thanvigandhi_1

1 answer

When a sound wave of wavelength $'\lambda'$ is propagating in a medium, the maximum velocity of the particle is equal to the wave velocity. The amplitude of wave is

asked Oct 18, 2013 by meena.p

1 answer

In Young's double slit experiment, the 10th maximum. When the wavelength $\lambda _1$ is at a distance of $y_1$ from the central maximum. When the wavelength of the source is changed to $\lambda_2,5$ th maximum is at a distance of $y_2$ from its central maximum. The ratio $\bigg(\large\frac{y_1}{y_2}\bigg)$is :

asked Oct 11, 2013 by meena.p

3 answers

If earth were to rotate on its own axis such that the weight of a person at the equator becomes half the weight at the poles, then its time period of rotation is (g = acceleration due to gravity near the poles and R is the radius of earth) ( Ignore equatorial bulge)

asked Oct 10, 2013 by thanvigandhi_1

1 answer

An organ pipe $P_1$, closed at one end and containing a gas of density $\rho _1 $ is vibrating in its first harmonic. Another organ pipe $P_2$, open at both ends and containing a gas of density $\rho_2$ is vibrating in its third harmonic . Both the pipes are in resonance with a given tuning fork. If the compressibility of gases is equal in both pipes, the ratio of the lengths of $P_1$ and $P_2$ is (assume the given gases to be monoatomic):

asked Sep 30, 2013 by meena.p

1 answer

An insulated cylindrical vessel filled with an insulated piston of negligible weight and negligible thickness at the mid point of the vessel. The cylinder contains a gas at $0^{\circ}C$. When the gas is heated to $100^{\circ}$, the piston moves through a length of $5 \;cm$. Length of the cylindrical vessel is cm is :

asked Sep 24, 2013 by meena.p

1 answer

An air column in a tube $32\; cm$ long, closed at one end, is in resonance with a tuning fork. The air column in another tube, open at both ends, of length 66 cm is in resonance with another tuning fork. When these two tuning fork.The air column in another tube, open at both ends, of length 66 cm is in resonance with another tuning fork. When these two tuning forks are sounded together, they produce $8$ beats per seconds. Then the frequencies of the two tuning forks are , (Consider fundamental frequencies only)

asked Sep 17, 2013 by meena.p

0 answers

On putting $y=vx,$ the homogeneous differential equation $x^{2}dy+y(x+y)dx=0$ becomes

asked May 24, 2013 by poojasapani_1

1 answer

The sum of the distance of any point on the ellipse $ 4x^{2}+9y^{2}=36 $ from $(\sqrt{5},0) and (-\sqrt{5} ,0) $ is

asked May 13, 2013 by poojasapani_1

1 answer

True or False: If A and B are independent,then \[P(exactly\; one\; of \;A,B\; occurs)=P(A)P(B)+P(B)P(A)\]

asked Jan 10, 2013 by sreemathi.v

1 answer

True or False: $(AB)^{-1}=A^{-1}B^{-1},$ where A and B are invertible matrices satisfying commutative property with respect to multiplication.

asked Dec 24, 2012 by sreemathi.v

1 answer

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