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Recent questions tagged q47
Questions
The valancy of impurity atom added to silicon to make it P type is
jeemain
physics
class12
unit19
ch14
q47
easy
semiconductor-electronics
concepts
asked
Jan 28, 2014
by
meena.p
1
answer
$Li,Na$ and $K$ burn is excess of air to form
jeemain
chemistry
class11
s-block-elements
unit10
q47
medium
asked
Jan 28, 2014
by
sreemathi.v
1
answer
The volume of oxygen liberated at STP when 100ml of 15 volume $H_2O_2$ decomposes
jeemain
chemistry
class11
hydrogen
unit9
q47
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
Green house gases radiate back the following radiations to the earth surface
jeemain
chemistry
class11
environmental-chemistry
unit14
q47
medium
asked
Jan 21, 2014
by
sreemathi.v
1
answer
Four dice are rolled. The number of possible outcomes in which at least one dice shown 2 is
jeemain
math
cbse
class12
probability
easy
q47
asked
Jan 15, 2014
by
thanvigandhi_1
1
answer
An ion with 18 electrons in the outermost shell is :
sat
atomic-structure
jeemain
chemistry
physical-chemistry
class11
unit2
quantum-mechanical-model
q47
easy
asked
Jan 13, 2014
by
sreemathi.v
1
answer
Number of $H^+$ ions in 100ml of 0.001M $H_2SO_4$ is
sat
chemistry
stoichiometry and the mole concept
jeemain
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
stoichiometry
q47
easy
asked
Jan 9, 2014
by
sreemathi.v
1
answer
Find the sum of n terms of the series 1.5+3.8+5.11+---------------n
jeemain
math
class11
ch9
sequences-and-series
easy
sum-of-n-terms-of-special-series
q47
asked
Jan 3, 2014
by
yamini.v
1
answer
The image of the point $P(1,3,4)$ in the plane $2x-y+z+3=0$ is ?
jeemain
math
class12
ch11
3d-geometry
intersection-of-lines-and-planes
medium
q47
asked
Jan 2, 2014
by
rvidyagovindarajan_1
1
answer
If $f(x)=(x+1)^{\cot x}$ is continuous at $x=0$ then $f(0)$ is
jeemain
math
clas12
continuity-and-differentiability
continuity
easy
q47
asked
Dec 24, 2013
by
sreemathi.v
2
answers
The voltage gain of an amplifier with 9% negative feedback is 10. The voltage gain without feedback will be :
aipmt
modelpaper
physics
2008
q47
asked
Dec 16, 2013
by
thanvigandhi_1
0
answers
Integrate: $\int \limits_{-1}^1 x |x| dx.$
jeemain
math
class12
unit7
integral-calculus
integration-using-partial-fractions
medium
q47
asked
Dec 16, 2013
by
meena.p
1
answer
$AgNO_3(aq)\;\overset{\overset{electrolysis}{\Large\rightarrow}}{in\;presence\;of\;pt\;electrode}$ then at end of electrolysis
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q47
difficult
asked
Dec 12, 2013
by
sreemathi.v
1
answer
The underground stem of this genus is a rhizome :
jeemain
eamcet
biology
2002
q47
asked
Dec 9, 2013
by
thanvigandhi_1
0
answers
Which of the following is a cultivated variety of red gram ?
jeemain
eamcet
biology
2001
q47
asked
Dec 2, 2013
by
thanvigandhi_1
0
answers
The element which can displace 3 other halogens from their compounds
jeemain
chemistry
unit15
p-block-elements
q47
medium
asked
Nov 28, 2013
by
sreemathi.v
1
answer
A solution is obtained by mixing two solutions of same electrolyte with pH = 5 and pH = 3 respectively. The resulting solution has pH
jeemain
aipmt
chemistry
equilibrium
medium
q47
biology
asked
Nov 27, 2013
by
mosymeow_1
1
answer
The ground tissue is undifferentiated in :
jeemain
eamcet
biology
2000
q47
asked
Nov 26, 2013
by
thanvigandhi_1
0
answers
Munch mass flow hypothesis mainly explain the long distance transport of the following
jeemain
eamcet
biology
1999
q47
asked
Nov 23, 2013
by
thanvigandhi_1
0
answers
If $a_1,a_2,a_3.......a_n$ are in G.P then the value of the determinant $\begin{vmatrix}\log a_n&\log a_{n+1}&\log a_{n+2}\\\log a_{n+3}&\log a_{n+4}&\log a_{n+5}\\\log a_{n+6}&\log a_{n+7}&\log a_{n+8}\end{vmatrix}$ is
jeemain
math
class12
ch4
determinants
q47
evaluate-determinants
easy
asked
Nov 21, 2013
by
sreemathi.v
1
answer
If $\overrightarrow u,\overrightarrow v,\overrightarrow w$ are three vectors such that $|\overrightarrow u|=1,\:|\overrightarrow v|=2,\:|\overrightarrow w|=3$ and if the projection of $\overrightarrow v$ along $\overrightarrow u$ is equal to that of $\overrightarrow w$ along $\overrightarrow u$ and also if $\overrightarrow u$ and $\overrightarrow v$ are $\perp$ to each other, then $ |\overrightarrow u-\overrightarrow v+\overrightarrow w|= ?$
jeemain
math
class12
ch10
vector-algebra
difficult
addition-of-vectors
q47
asked
Nov 18, 2013
by
rvidyagovindarajan_1
1
answer
Match the following :
jeemain
eamcet
biology
2010
q47
asked
Nov 13, 2013
by
thanvigandhi_1
0
answers
If PM is the perpendicular from $P(2,3)$ onto the line $x+y=3, then the co-ordinates of M are :
jeemain
eamcet
math
2005
q47
asked
Nov 12, 2013
by
meena.p
1
answer
Let O be the origin and A be a point on the curve $y^2=4x$. Then the locus of the mid point of OA is :
jeemain
eamcet
math
2006
q47
asked
Nov 6, 2013
by
meena.p
1
answer
Identify the correct combinations
jeemain
eamcet
biology
2011
q47
asked
Oct 27, 2013
by
thanvigandhi_1
1
answer
If $A(2,-1)$ and $B(6,5)$ are two points the ratio in which the foot of the perpendicular from (4,1) to AB divides it, is
jeemain
eamcet
math
2007
q47
asked
Oct 25, 2013
by
meena.p
1
answer
The mole fraction of water in 20% aqueous solution of $H_2O_2$ is :
jeemain
chemistry
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
mole-concept-and-molar-masses
q47
medium
asked
Oct 25, 2013
by
sreemathi.v
1
answer
If l,m,n are in arithmetic progression, then the straight line $lx+my+n=0$ will pass through the point
jeemain
eamcet
math
2008
q47
asked
Oct 17, 2013
by
meena.p
1
answer
Anematic flagellum is found in
jeemain
eamcet
biology
2012
q47
asked
Oct 17, 2013
by
thanvigandhi_1
1
answer
If $\pi < \theta < \large\frac{3\pi}{2}$ the expression $\sqrt{4\sin^4\theta+\sin^22\theta}+4\cos^2\big(\large\frac{\pi}{4}-\frac{\theta}{2}\big)$ is equal to
jeemain
math
class11
ch3
trigonometric-functions
q47
trignometric-equations
medium
asked
Oct 17, 2013
by
sreemathi.v
1
answer
The area (in square units) of the triangle formed by $x+y+1=0$ and the pair of straight lines $x^2-3xy+2y^2=0$ is :
jeemain
eamcet
math
2009
q47
asked
Oct 10, 2013
by
meena.p
1
answer
If $\tan x=\large\frac{b}{a}$ then the value of $a\cos 2x+b\sin 2x$ is
jeemain
math
class11
ch3
trigonometric-functions
q47
trignometric-identities
easy
asked
Oct 9, 2013
by
sreemathi.v
1
answer
To what depth, relative to the surface does mercury dip down in a capillary tube of radius $1.0 mm$ surface tension $T=0.5 N/m$ density of mercury $=13.6 \times 10^{3}\;kg/m^3$ $\;g=9.8 m/s^2$
jeemain
physics
class11
unit7
properties-of-solids-and-fluids
q47
easy
asked
Oct 8, 2013
by
meena.p
1
answer
Identify the correct combinations
jeemain
eamcet
biology
2013
q47
asked
Oct 5, 2013
by
thanvigandhi_1
1
answer
A pair of perpendicular lines passes through the origin and also through the points of intersection of the curve $x^2+y^2 =4$ with $x+y=a,$ where $a > 0$. Then $a=$
jeemain
eamcet
math
2010
q47
asked
Sep 27, 2013
by
meena.p
1
answer
In a triangle $ABC$ if $\large\frac{\cos A}{a}=\frac {\cos B}{b} =\frac{\cos C}{c}$, then $\Delta ABC$ is
jeemain
eamcet
math
2011
q47
asked
Sep 20, 2013
by
meena.p
1
answer
The equation $x^2-5xy+py^2+3x-8y+2=0$ represents a pair of straight lines. If $\theta$ is the angle between them, then $\sin \theta=$
jeemain
eamcet
math
2013
q47
asked
Sep 16, 2013
by
meena.p
1
answer
$0.1\;M\;HCL$ solution is diluted by $100\;times$. The pH of the solution so formed is .............. .
jeemain
eamcet
chemistry
1991
fitb
q47
asked
Sep 12, 2013
by
meena.p
0
answers
A satellite can be in a geostationary orbit around the earth at a distance r from the center. If the angular velocity of earth about its axis doubles, a satellite can now be in a geostationary orbit around earth if its distance from the center is
jeemain
physics
class11
unit6
gravitation
q47
medium
asked
Aug 22, 2013
by
meena.p
1
answer
A body of mass m at rest explodes into 3 partrs, having masses in ratio 1:1:3. If two parts having equal masses move at right angles to each other with 10 m/s each , the velocity of third will be
jeemain
physics
class11
unit4
work-power-energy
q47
medium
asked
Jul 22, 2013
by
meena.p
1
answer
A block is placed on a rough horizontal plane attached with an elastic spring as shown.
jeemain
physics
class11
unit3
laws-of-motion
q47
difficult
asked
Jul 11, 2013
by
meena.p
1
answer
The laser light beamed towards moon from earth takes $2.56s$ to return after reflection at moon's surface. How much is the radius of lunar orbit around earth?
jeemain
physics
class11
ch2
units-and-measurement
q47
easy
measurement-of-length-mass-time
asked
Jun 19, 2013
by
meena.p
1
answer
If $u=\large\frac{1}{\sqrt{x^{2}+y^{2}}},$ then $x\large\frac{\partial u}{\partial x}$$+y\large\frac{\partial u}{\partial y}$ is equal to
tnstate
class12
bookproblem
p233
objective
q47
modelpaper
mar-2008
jun-2009
asked
May 20, 2013
by
poojasapani_1
1
answer
The work done by the force $\overrightarrow {f}=\overrightarrow{i}+\overrightarrow{j}+\overrightarrow{k}$ acting on a particle, if the particle is displaced from $A(3 , 3 , 3 )$ to the point $B(4 , 4 , 4 ) $ is
tnstate
class12
bookproblem
p269
objective
q47
modelpaper
mar-2006
asked
May 11, 2013
by
poojasapani_1
1
answer
$ P(A)=1/2,P(B)=7/12\;and\;P(notA\;or\;norB)=1/4$ State whether A and B independent or not.
cbse
class12
additionalproblem
kvquestionbank2012
ch13
q47
p43
math
asked
Feb 5, 2013
by
meena.p
0
answers
Evaluate:\[\int \frac {dx}{(x+1)\sqrt {x^2+1}},x>-1\]
cbse
class12
additionalproblem
kvquestionbank2012
ch7
q47
p27
math
asked
Feb 3, 2013
by
meena.p
0
answers
Show that the volume of the greatest cylinder which can be inscribed in a cone of height h and semi vertical angle $ 30^\circ\;is\;\large\frac{4}{81}\pi h^3$
cbse
class12
additionalproblem
kvquestionbank2012
ch6
q47
p19
math
asked
Jan 29, 2013
by
meena.p
0
answers
It is given that for the function $ f(x)=x^3-6x^2+px+q\;on\;[1,3].$Rolles theorem holds with $ c=2+\large\frac{1}{\sqrt 3}.$Find the values of p and q.
cbse
class12
additionalproblem
kvquestionbank2012
ch5
q47
p15
easy
math
asked
Jan 28, 2013
by
meena.p
1
answer
If the points (2,0), (0,5) and (x,y) are collinear give a relation between x and y.
cbse
class12
additionalproblem
kvquestionbank2012
ch3
q47
p10
math
sec-a
asked
Jan 24, 2013
by
meena.p
0
answers
Integrating factor of the differential equation $(1-x^2)\Large \frac{dy}{dx}\normalsize -xy=1$ is \[(A)\;-x\quad(B)\;\frac{x}{1-x^2}\quad(C)\;\sqrt {1-x^2}\quad(D)\;\frac{1}{2}log(1-x^2)\]
cbse
class12
ch9
sec-a
q47
p197
objective
exemplar
difficult
math
asked
Jan 18, 2013
by
sreemathi.v
1
answer
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