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Recent questions tagged q42
Questions
Which of the following compounds will exhibit cis-trans (geometrical ) isomerism ?
jeemain
chemistry
class11
organic-chemistry
q42
difficult
basic-organic-chemistry
ch12
asked
Feb 22, 2014
by
meena.p
1
answer
Complete the following reaction by filling in the necessary reagents.
jeemain
chemistry
unit11
unit12
class12
organic-chemistry
oxygen
aldehyde-and-ketones
q42
medium
asked
Feb 20, 2014
by
sreemathi.v
1
answer
1 litre capacity flask containing $HN_3$ at 1 atm and $25^{\large\circ}C$. A spark is passed through untill all the $HN_3$ is decomposed into $N_2$ and $H_2$. Calculate the pressure of gases left at $25^{\large\circ}$
jeemain
chemistry
physical-chemistry
class11
unit5
states-of-matter
gas-laws
easy
q42
asked
Feb 16, 2014
by
sharmaaparna1
1
answer
Which of the following aqueous solutions posses zero as Van't Hoff coefficient?
jeemain
chemistry
class12
unit2
solutions
q42
medium
asked
Feb 13, 2014
by
sreemathi.v
1
answer
Find the vertex of parabola $x^2+4x+4-y=0$
jeemain
math
class11
coordinate-geometry-conic-sections
parabola
ch11
q42
easy
asked
Feb 5, 2014
by
sreemathi.v
1
answer
The general solution of the given below differential equation is a family of curve where $4a$ is length of the latus rectum which looks $y \large\frac{dy}{dx}$$=2a$
jeemain
math
class12
ch9
differential-equations
ordinary-differential-equations
q42
difficult
asked
Feb 5, 2014
by
meena.p
1
answer
Which of the following has an optical isomer
jeemain
chemistry
class12
coordination-compounds
unit9
q42
medium
asked
Feb 3, 2014
by
sreemathi.v
1
answer
If $ \sigma_x= \sigma_y$ and $x,y$ are related by $u=x+y\: v=x-y$ then $cov (u,v)$ is
jeemain
math
cbse
class11
statistics
analysis-of-frequency-distributions-(correlation-coefficient)
difficult
q42
asked
Jan 31, 2014
by
thanvigandhi_1
1
answer
The coefficient of correlation between $x$ and $y$ is $0.5$ and their covariance is $16$ and SD of $x$ is $4$ then SD of $y$ is
jeemain
math
cbse
class11
statistics
medium
variance-and-standard-deviation
q42
asked
Jan 28, 2014
by
thanvigandhi_1
1
answer
When negative voltage feedback is applied to an amplifier of gain 150, the overall gain falls to 15. Find the fraction of the output that is feedback to the input.
jeemain
physics
class12
unit19
ch14
q42
medium
transistors
semiconductor-electronics
asked
Jan 28, 2014
by
meena.p
1
answer
Which of the following does not give metal oxide on heating
jeemain
chemistry
class11
s-block-elements
unit10
q42
medium
asked
Jan 27, 2014
by
sreemathi.v
1
answer
A sample of hard water contains 68ppm of $CaSO_4$,then the hardness of the same sample of water is
jeemain
chemistry
class11
hydrogen
unit9
q42
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
If BOD of river is high
jeemain
chemistry
class11
environmental-chemistry
unit14
q42
medium
asked
Jan 20, 2014
by
sreemathi.v
1
answer
For normal distribution the third moment about the mean is
jeemain
math
cbse
class12
probability
easy
q42
asked
Jan 15, 2014
by
thanvigandhi_1
1
answer
In potassium atom,electronic energylevel is in the order:
sat
atomic-structure
jeemain
chemistry
physical-chemistry
class11
unit2
quantum-mechanical-model
q42
easy
asked
Jan 10, 2014
by
sreemathi.v
1
answer
Amount of oxygen required for complete combustion of 27g Al is
sat
chemistry
stoichiometry and the mole concept
jeemain
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
laws-of-chemical-combinations
q42
easy
asked
Jan 8, 2014
by
sreemathi.v
1
answer
Insert two geometric means between 4 and 256 .
jeemain
math
class11
ch9
sequences-and-series
easy
geometric-progression
q42
asked
Jan 3, 2014
by
yamini.v
1
answer
The equation of the plane whose foot of $\perp$ drawn from origin is $(1,2,1)$. is?
jeemain
math
class12
ch11
3d-geometry
equations-of-planes
medium
q42
asked
Jan 1, 2014
by
rvidyagovindarajan_1
1
answer
$\lim\limits_{x\to 1}\large\frac{x^3+x^2-2}{\sin(x-1)}$ is
jeemain
math
class11
ch13
limits-and-derivatives
introduction to limits
easy
q42
asked
Dec 23, 2013
by
sreemathi.v
1
answer
A particle of mass 1 mg has the same wavelength as an electron moving with a velocity of $ 3 \times 10^6\: ms^{-1}$. The velocity of particle is :
aipmt
modelpaper
physics
2008
q42
asked
Dec 16, 2013
by
thanvigandhi_1
0
answers
$I_1 = \int \limits _1^2 |x| dx ; I_2=\int \limits_1^2 \large\frac{1}{\sqrt {1+x^2}}$$ dx $
jeemain
math
class12
ch7
integral-calculus
properties-of-definite-integrals
medium
q42
asked
Dec 16, 2013
by
meena.p
1
answer
For the reaction $A\rightarrow B$ the rate law expression $-\large\frac{d[A]}{dt}$$=k[A]^{1/2}$.Select the correct statement:
jeemain
chemistry
unit9
chemical-kinetics
q42
medium
asked
Dec 16, 2013
by
sreemathi.v
1
answer
If $X$ is specific resistance of electrolyte solution $Na_7SO_4$ and $y(N)$ is concentration of solution then $\Delta m$ is given by
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q42
easy
asked
Dec 12, 2013
by
sreemathi.v
1
answer
In pulses the proteins are stored in :
jeemain
eamcet
biology
2002
q42
asked
Dec 9, 2013
by
thanvigandhi_1
0
answers
Which of the following taxons is known for the absence of fruit ?
jeemain
eamcet
biology
2001
q42
asked
Dec 2, 2013
by
thanvigandhi_1
1
answer
Which one of the following compounds in aqueous solution gives a white precipitate acid?
jeemain
chemistry
unit15
p-block-elements
q42
medium
sec-a
asked
Nov 27, 2013
by
sreemathi.v
1
answer
The nucleolus is concerned with the synthesis of :
jeemain
eamcet
biology
2000
q42
asked
Nov 26, 2013
by
thanvigandhi_1
0
answers
For the percipitation of cations of group four in the qualitative analysis, the medium is made alkaline before passing $H_2S$ gas. The purpose of alkaline Solution is
jeemain
aipmt
chemistry
equilibrium
medium
q42
biology
asked
Nov 23, 2013
by
mosymeow_1
1
answer
In a plant physiology experiment a green plant kept in light was found releasing more units of $^{18}O_2$. Which of the following compounds would have been supplied to that plant ?
jeemain
eamcet
biology
1999
q42
asked
Nov 23, 2013
by
thanvigandhi_1
1
answer
If $A^2-A+I=0$ then the inverse of A is
jeemain
math
class12
ch4
determinants
q42
adjoint-and-inverse
easy
asked
Nov 21, 2013
by
sreemathi.v
1
answer
If $\overrightarrow {OA}=\hat i+3\hat j-2\hat k\:\:and\:\:\overrightarrow {OB}=3\hat i+\hat j-2\hat k$ and $\overrightarrow {OC} $ is angular bisector of angle $AOB$ with $C$ being the point on the line $AB$, then $\overrightarrow {OC}=?$
jeemain
math
class12
ch10
vector-algebra
medium
addition-of-vectors
q42
asked
Nov 13, 2013
by
rvidyagovindarajan_1
1
answer
Box A contains 2 black and 3 red balls, white Box contains 3 black and 4 red balls. Out of these two boxes one is selected at random ; and the probability of choosing Box A is double that of Box B. If a red ball is drawn from the selected box, then the probability that it has come from Box B, is :
jeemain
eamcet
math
2005
q42
asked
Nov 12, 2013
by
meena.p
2
answers
Which of the following statements are correct with regards to Deuterostomes ?
jeemain
eamcet
biology
2010
q42
asked
Nov 12, 2013
by
thanvigandhi_1
0
answers
Seven balls are drawn simultaneously from a bag containing 5 white and 6 green balls. The probability of drawing 3 white and 4 green balls is :
jeemain
eamcet
math
2006
q42
asked
Nov 6, 2013
by
meena.p
1
answer
Match the following
jeemain
eamcet
biology
2011
q42
asked
Oct 27, 2013
by
thanvigandhi_1
1
answer
A bag contains 6 white and 4 black balls. Two balls are drawn at random. The probability that they are of the same colour, is
jeemain
eamcet
math
2007
q42
asked
Oct 25, 2013
by
meena.p
1
answer
The hydrated salt,$Na_2SO_4.nH_2O$ undergoes 55.9% loss in weight on heating and becomes anhydrous.The value of n will be
jeemain
chemistry
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
percentage-composition
q42
medium
asked
Oct 25, 2013
by
sreemathi.v
1
answer
For $k= 1,2,3$ the box $B_k$ contains k red balls and $(k+1)$ white balls. Let $P(B_1)-\large\frac{1}{2}$$ , P(B_2)-\large\frac{1}{3}$ and $P(B_3)=\large\frac{1}{6}$. A box is selected at random and a ball is drawn from it . If a red ball is drawn, then the probability that it has come from box $B_2$ is
jeemain
eamcet
math
2008
q42
asked
Oct 17, 2013
by
meena.p
0
answers
In Pheretima removal of these ganglia results in the loss of motor control
jeemain
eamcet
biology
2012
q42
asked
Oct 16, 2013
by
thanvigandhi_1
1
answer
Simplify :$\large\frac{\sin 7x-\sin 3x-\sin 5x+\sin x}{\cos 7x+\cos 3x-\cos 5x-\cos x}$
jeemain
math
class11
ch3
trigonometric-functions
q42
trignometric-equations
medium
asked
Oct 16, 2013
by
sreemathi.v
1
answer
The transformed equation of $x^2+y^2=r^2$ when the axes are rotated through an angle $36^{\circ}$ is :
jeemain
eamcet
math
2009
q42
asked
Oct 10, 2013
by
meena.p
0
answers
If $\tan\alpha=\large\frac{1}{7}$ and $\sin\beta=\large\frac{1}{\sqrt {10}}$ where $0\;<\alpha,\beta\;<\;\large\frac{\pi}{2}$ then $2\beta$ is equal to:
jeemain
math
class11
ch3
trigonometric-functions
q42
basic-trigonometric-functions
easy
asked
Oct 8, 2013
by
sreemathi.v
1
answer
Two wires of different materials are used to hang a rod horizontally tied from two ends of the rod of length $2m$. At what distance should a weight be hung on the rod from Wire-1 so that equal stresses are produced on both the wires. Wire 1: cross -sectional area $= 10^{-3}m^{2}$. Young's modulus $= 2 \times 10^{11} N/m^2$ Wire 2 : cross -sectional area $= 2 \times 10^{-3} m^{2}$. Young's modulus $= 1 \times 10^{11} N/m^2$
jeemain
physics
class11
unit7
properties-of-solids-and-fluids
q42
medium
asked
Oct 7, 2013
by
meena.p
1
answer
Which one of the branches of cranial nerves is not related to vagus?
jeemain
eamcet
biology
2013
q42
asked
Oct 5, 2013
by
thanvigandhi_1
1
answer
If a straight line L is perpendicular to the line $4x-2y=1$ and forms a triangle of area 4 square units with the coordinate axes, then an equation of the line L is :
jeemain
eamcet
math
2010
q42
asked
Sep 27, 2013
by
meena.p
1
answer
If $f(x)=\sin ^6 x+ \cos ^6x$ for $x \in IR,$ then $f(x)$ lies in the interval
jeemain
eamcet
math
2011
q42
asked
Sep 20, 2013
by
meena.p
1
answer
The origin is translated to (1,2). The point $(7,5)$ in the old system undergoes the following transformations successively. (i) Moves to the new point under the given translation of origin. (ii) Translated through 2 units along the negative direction of the new X-axis. (iii) Rotated through an angle $\large\frac{\pi}{4}$ about the origin of new system in the clockwise direction. The final position of the point (7,5) is
jeemain
eamcet
math
2013
q42
asked
Sep 16, 2013
by
meena.p
1
answer
In the reaction $^{19}_8 O+_1H^2 \to ^{18}_8O+X,X$ is ................... .
jeemain
eamcet
chemistry
1991
fitb
q42
asked
Sep 12, 2013
by
meena.p
0
answers
Four similar particles of mass M are orbiting in a circle of radius r in the same angular direction because of their mutual gravitational attraction, velocity of particle is
jeemain
physics
class11
unit6
gravitation
q42
difficult
asked
Aug 21, 2013
by
meena.p
1
answer
Due to the application of a force body of mass 1.5 kg is moving up vertically with an acceleration of $1.2 m/s^2$ for $10 \;s$, starting from rest, What is power of the agent doing work?
jeemain
physics
class11
unit4
work-power-energy
q42
medium
asked
Jul 22, 2013
by
meena.p
1
answer
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