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Recent questions tagged q43
Questions
$PCl_5$ in solid state splits into :
jeemain
chemistry
physical-chemistry
class11
unit4
chemical-bonding-and-molecular-structure
ionic-or-electrovalent-bond
q43
easy
asked
Mar 5, 2014
by
sreemathi.v
1
answer
What could be the product for the following reaction?
jeemain
chemistry
unit13
class12
organic-chemistry
nitrogen
amines
q43
difficult
asked
Mar 3, 2014
by
sreemathi.v
1
answer
The compound which is not isomeric with diethyl ether is
jeemain
chemistry
class11
organic-chemistry
q43
difficult
basic-organic-chemistry
ch12
asked
Feb 22, 2014
by
meena.p
1
answer
What is the most likely result of the reaction conditions shown?
jeemain
chemistry
unit11
unit12
class12
organic-chemistry
oxygen
aldehyde-and-ketones
q43
medium
asked
Feb 20, 2014
by
sreemathi.v
1
answer
5.6 litre of an unknown gas at NTP requires 12.5 calorie to raise its temperature by $10^{\large\circ}C$ at constant volume. Calculate the $C_v$ of the gas.
jeemain
chemistry
physical-chemistry
class11
unit5
states-of-matter
ideal-gas-equation
easy
q43
asked
Feb 16, 2014
by
sharmaaparna1
1
answer
Find the tangent at the parametric coordinate of parabola $y^2=4ax$?
jeemain
math
class11
coordinate-geometry-conic-sections
parabola
ch11
q43
easy
asked
Feb 5, 2014
by
sreemathi.v
1
answer
General solution of differential equation $\large\frac{dy}{dx}=\frac{x}{2a}$
jeemain
math
class12
ch9
differential-equations
ordinary-differential-equations
q43
difficult
asked
Feb 5, 2014
by
meena.p
1
answer
Which of the following pairs represents linkage isomers :
jeemain
chemistry
class12
coordination-compounds
unit9
q43
medium
asked
Feb 3, 2014
by
sreemathi.v
1
answer
If $b_{yx} = \large\frac{1}{2}$ and $b_{xy} = \large\frac{2}{3}$ and $ \theta$ is the acute angle between the two regression lines then $ \tan \theta$ =
jeemain
math
cbse
class11
statistics
analysis-of-frequency-distributions
difficult
q43
asked
Feb 1, 2014
by
thanvigandhi_1
1
answer
The two lines of regression are $ x+2y-5=0$ and $ x+3y-8=0$. The coefficient of correlation between $x$ and $y$ is
jeemain
math
cbse
class11
statistics
medium
variance-and-standard-deviation
q43
asked
Jan 28, 2014
by
thanvigandhi_1
1
answer
A transistor in common emitted mode the load resistance is $2k \Omega$ and the current gain $\beta =50,$ What is the power if input resistance is $500 \Omega$
jeemain
physics
class12
unit19
ch14
q43
medium
transistors
semiconductor-electronics
asked
Jan 28, 2014
by
meena.p
1
answer
Alkali metals are
jeemain
chemistry
class11
s-block-elements
unit10
q43
medium
asked
Jan 27, 2014
by
sreemathi.v
1
answer
The weight of one mole of heavy water is
jeemain
chemistry
class11
hydrogen
unit9
q43
medium
asked
Jan 23, 2014
by
sreemathi.v
1
answer
Which of the following can be removed by ion exchange method
jeemain
chemistry
class11
environmental-chemistry
unit14
q43
medium
asked
Jan 21, 2014
by
sreemathi.v
1
answer
The probability for a razor blade to be defective is 0.002. The blades are in packet of 10. The number of packets containing no defective blades in a stock of 10,000 packet is
jeemain
math
cbse
class12
probability
poisson's-distribution
easy
q43
asked
Jan 15, 2014
by
thanvigandhi_1
1
answer
In which electronic level,the H atom can absorb the photon but cannot emit a photon?
jeemain
chemistry
physical-chemistry
class11
unit2
atomic-structure
quantum-mechanical-model
q43
easy
asked
Jan 10, 2014
by
sreemathi.v
1
answer
25ml of 3.0M $HNO_3$ are mixed with 75ml of 4.0M $HNO_3$.If the volumes are additive,the molarity of the final mixture would be :
jeemain
chemistry
physical-chemistr
class11
unit1
some-basic-concepts-in-chemistry
stoichiometry
q43
easy
asked
Jan 8, 2014
by
sreemathi.v
1
answer
Find 3 Geometric means between $\large\frac{1}{3}$ and 432.
jeemain
math
class11
ch9
sequences-and-series
easy
geometric-progression
q43
asked
Jan 3, 2014
by
yamini.v
1
answer
If from the point $P(a,b,c)$ perpendiculars $PA$ and $PB$ are drawn to $yz$ and $zx$ planes respectively then the vector equation of the plane $OAB$ is ?
jeemain
math
class12
ch11
3d-geometry
equations-of-planes
easy
q43
asked
Jan 2, 2014
by
rvidyagovindarajan_1
1
answer
The function $f(x)=\sin^{-1}(\cos x)$ is
jeemain
math
class12
ch5
continuity-and-differentiability
continuity
easy
q43
asked
Dec 23, 2013
by
sreemathi.v
1
answer
The ground state energy of hydrogen atom is -13.6eV. When its electron is in the first excited state, its excitation energy is :
aipmt
modelpaper
physics
2008
q43
asked
Dec 16, 2013
by
thanvigandhi_1
1
answer
Integrate $I= \int \limits_0^1 e^{x^2} dx$
jeemain
math
class12
ch7
integral-calculus
definite-integrals-as-limit-of-sum
difficult
q43
asked
Dec 16, 2013
by
meena.p
1
answer
$E_{cell}$ for reduction $NO_3^-\rightarrow NO$ by $Ag(s)$?
jeemain
chemistry
unit8
redox-reactions-and-electrochemistry
q43
difficult
asked
Dec 12, 2013
by
sreemathi.v
1
answer
In Bentham and Hooker's classification the way of arrangement of the three series of polypetalae reflects this gradual evolution of flower from :
jeemain
eamcet
biology
2002
q43
asked
Dec 9, 2013
by
thanvigandhi_1
0
answers
Which one of the following is an advanced floral feature ?
jeemain
eamcet
biology
2001
q43
asked
Dec 2, 2013
by
thanvigandhi_1
0
answers
Which one of the following element has highest first ionization potential?
jeemain
chemistry
unit15
p-block-elements
q43
medium
asked
Nov 27, 2013
by
sreemathi.v
1
answer
The organelles, which play an important role in the formation of the cell plate are :
jeemain
eamcet
biology
2000
q43
asked
Nov 26, 2013
by
thanvigandhi_1
1
answer
If the solubility of $Ag_2CrO_4$ is S mole/litre. Its solubility product is
sat
chemistry
chemical-equilibrium
jeemain
aipmt
equilibrium
easy
q43
biology
asked
Nov 23, 2013
by
mosymeow_1
2
answers
The number of oxidations involving NADH in Krebs cycle is
jeemain
eamcet
biology
1999
q43
asked
Nov 23, 2013
by
thanvigandhi_1
0
answers
If $A$ and $B$ are square matrices of size $n\times n$ such that $A^2-B^2=(A-B)(A+B)$ then which of the following will be always true?
jeemain
math
class12
ch3
matrices
q43
invertible-matrices
easy
asked
Nov 21, 2013
by
sreemathi.v
1
answer
If $\overrightarrow a,\overrightarrow b\:\overrightarrow c$ are three vectors of equal magnitude and angle between $\overrightarrow a\:and\:\overrightarrow b$ is $\alpha$, that between $\overrightarrow b\:\overrightarrow c$ is $\beta$, and that between $\overrightarrow a\:and\:\overrightarrow c$ is $\gamma$ then the minimum value of $cos\alpha+cos\beta+cos\gamma$ is ?
jeemain
math
class12
ch10
vector-algebra
difficult
vector-product
q43
asked
Nov 15, 2013
by
rvidyagovindarajan_1
1
answer
If the range of a random variable X is $\{0,1,2,3,4.......\}$ with $P(X =k)= \large\frac{(k+1)a}{3^k}$ for $ k \leq 0,$ then a is equal to :
jeemain
eamcet
math
2005
q43
asked
Nov 12, 2013
by
meena.p
1
answer
Choose the animal which exhibits the following characteristics
jeemain
eamcet
biology
2010
q43
asked
Nov 12, 2013
by
thanvigandhi_1
0
answers
In a book of 500 pages, it is found that there are 250 typing errors. Assume that Poisson law holds for the number of errors per page. Then, the probability that a random sample of 2 pages will contain no error, is :
jeemain
eamcet
math
2006
q43
asked
Nov 6, 2013
by
meena.p
1
answer
One of the following Hepatitis is not transmitted parenterally :
jeemain
eamcet
biology
2011
q43
asked
Oct 27, 2013
by
thanvigandhi_1
1
answer
The mean and standard deviation of a binomial variate x are 4 and $\sqrt 3$ respectively. Then $P( X \geq 1)$ is equal to
jeemain
eamcet
math
2007
q43
asked
Oct 25, 2013
by
meena.p
1
answer
$Al_2(SO_4)_3.XH_2O$ has 8.1% aluminum by mass.The value of $X$ is
jeemain
chemistry
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
percentage-composition
q43
medium
asked
Oct 25, 2013
by
sreemathi.v
1
answer
The distribution of a random variable X is given below:
jeemain
eamcet
math
2008
q43
asked
Oct 17, 2013
by
meena.p
1
answer
Evaluate : $\tan\big[\large\frac{1}{2}$$\cos^{-1}\large\frac{\sqrt 5}{3}\big]$
jeemain
math
class12
ch2
inverse-trigonometric-functions
q43
inverse-trignometric-properties
medium
asked
Oct 17, 2013
by
sreemathi.v
1
answer
Study the following and choose the correct one
jeemain
eamcet
biology
2012
q43
asked
Oct 16, 2013
by
thanvigandhi_1
1
answer
The area (in square units) of the circle which touches the lines $4x+3y=15$ and $4x+3y=5$ is :
jeemain
eamcet
math
2009
q43
asked
Oct 10, 2013
by
meena.p
1
answer
The value of $\cos y\cos\big(\large\frac{\pi}{2}$$-x)$$-\cos(\large\frac{\pi}{2}$$-y\big)\cos x+\sin y\cos\big(\large\frac{\pi}{2}-x\big)$$+\cos x.\sin\big(\large\frac{\pi}{2}$$-y\big)$ is zero.If
jeemain
math
class11
ch3
trigonometric-functions
q43
trignometric-equations
easy
asked
Oct 9, 2013
by
sreemathi.v
1
answer
A hydraulic press has a load F placed on the larger piston which is balanced by a smaller piston where a load of $20\;kg$ is kept. (neglecting mass of position) The larger piston has a diameter of $0.35\;m$ and the smaller piston has diameter of $0.1\;m$ The press is filled with oil of density $750\;kg/m^3$ and the larger position is at a height $1.5\;m$ relative to smaller piston. Find F.
jeemain
physics
class11
unit7
properties-of-solids-and-fluids
q43
medium
asked
Oct 8, 2013
by
meena.p
1
answer
Match the following with reference to Taenia Solium
jeemain
eamcet
biology
2013
q43
asked
Oct 5, 2013
by
thanvigandhi_1
1
answer
The image of point $(4,-13) $ with respect to the line $5x+y+6=0$ is :
jeemain
eamcet
math
2010
q43
asked
Sep 27, 2013
by
meena.p
1
answer
The most general value of $\theta$ which satisfies both the equations $\tan \theta=-1$ and $\cos \theta=\large\frac{1}{\sqrt 2}$ is :
jeemain
eamcet
math
2011
q43
asked
Sep 20, 2013
by
meena.p
1
answer
If $p$ and $q$ are the perpendicular distance from the origin to the straight lines $x\; \sec \theta-y \;cosec \theta=a$ and $x \cos \theta+ y \sin \theta= a \cos 2 \theta,$ then
jeemain
eamcet
math
2013
q43
asked
Sep 16, 2013
by
meena.p
1
answer
The half life of a radioactive substance is $100$ sec. It's disintegration constant is ..................... .
jeemain
eamcet
chemistry
1991
fitb
q43
asked
Sep 12, 2013
by
meena.p
0
answers
A geostationary satellite is at a height h above the surface of the earth If R is radius of earth 1) The mimimum coaltitude on earth upto which the satellite can be used for communication is $\sin ^{-1} \bigg(\large\frac{R}{R+a}\bigg)$ 2) The maximum coaltitude on earth upto which the satellite can be used for communication is $\sin ^{-1} \bigg(\large\frac{R}{R+h}\bigg)$ 3) Area of earth escaped from this satellite is given by $ (2 \pi R^2(1+\sin \theta)$ 4) Area of earth escaped from this satellite is given by $ (2 \pi R^2(1+\cos \theta)$
jeemain
physics
class11
unit6
gravitation
q43
difficult
asked
Aug 21, 2013
by
meena.p
1
answer
When a body is thrown vertically upwards with a velocity 50 m/s, the percentage of its initial kinetic energy converted to potential energy after 4s is $(g=10\;m/s^2)$
jeemain
physics
class11
unit4
work-power-energy
q43
medium
asked
Jul 22, 2013
by
meena.p
1
answer
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