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Recent questions tagged q101
ASK
The hydrolysis product of lactose are
jeemain
aipmt
chemistry
biomolecules
organic-chemistry
cbse
class12
unit16
difficult
q101
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 ____________.
cl2460
cbse
class12
ch5
q101
p116
fitb
exemplar
sec-a
easy
math
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
jeemain
chemistry
physical-chemistry
class11
unit5
states-of-matter
ideal-gas-equation
medium
q101
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 $Z$?
jeemain
chemistry
unit11
unit12
class12
organic-chemistry
oxygen
carboxylic-acids
q101
difficult
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
jeemain
math
class11
coordinate-geometry-conic -sections
hyperbola
ch11
q101
easy
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 :
jeemain
math
class11
ch9
sequences-and-series
easy
arithmetic-progression
q101
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?
jeemain
chemistry
physical-chemistry
class11
unit2
atomic-structure
quantum-mechanical-model
q101
medium
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
jeemain
math
ch5
continuity-and-differentiability
differentiability
medium
q101
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 $(\alpha,\beta)=?$
jeemain
math
class12
ch10
vector-algebra
difficult
addition-of-vectors
q101
asked
Dec 29, 2013
by
rvidyagovindarajan_1
1
answer
Integrate : $\int \sin 4x \cos 4x\;dx$
jeemain
math
class12
ch7
integral-calculus
integrals-as-an-anti-derivative
easy
q101
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 :
aipmt
modelpaper
biology
2008
q101
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 ?
jeemain
eamcet
physics
2010
q101
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 :
jeemain
eamcet
physics
2011
q101
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
jeemain
eamcet
physics
2012
q101
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
jeemain
eamcet
physics
2008
q101
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 :
jeemain
eamcet
physics
2009
q101
asked
Oct 11, 2013
by
meena.p
1
answer
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)
jeemain
eamcet
physics
2013
q101
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):
jeemain
eamcet
physics
2010
q101
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 :
jeemain
eamcet
physics
2011
q101
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)
jeemain
eamcet
physics
2013
q101
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
tnstate
class12
bookproblem
p239
objective
q101
modelpaper
jun-2006
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
tnstate
class12
bookproblem
p275
objective
q101
modelpaper
mar-2006
oct-2009
asked
May 13, 2013
by
poojasapani_1
1
answer
True or False: If A and B are independent,then \[P(exactly\; one\; of \;A,B\; occurs)=P(A)P(B)+P(B)P(A)\]
cbse
class12
ch13
q101
p286
true-or-false
exemplar
sec-a
easy
math
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.
cbse
class12
ch3
q101
p64
true-or-false
exemplar
toolbox
concepts
sec-a
easy
math
asked
Dec 24, 2012
by
sreemathi.v
1
answer
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