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Recent questions tagged mock
Questions
Two balls of equal masses moving with $\;10 \;ms^{-1}\;$ towards each other collide after some time . Considering the collision to be inelastic & mass of each ball to be 1 kg , the thermal energy developed in the process is equal to what?
jeemain
physics
class11
cbse
thermodynamics
easy
mock
asked
Mar 12, 2014
by
yamini.v
1
answer
Given the polymers arrange them in the decreasing order of their inter molecular forces: A=Nylon 6,6 B = Buna-S and C=Polythene.
jeemain
aipmt
chemistry
cbse
unit5
class12
organic-chemistry-polymers
q58
medium
mock
asked
Mar 11, 2014
by
thanvigandhi_1
1
answer
In the figure below, $N_2$ and $H_2$ are sent into the metre pipe through the two ends. At what distance $x$ will Ammonia be formed.
jeemain
physics
kinetic-theory-of-gases
class11
ch13
medium
kinetic-theory-of-an-ideal-gas
mock
rate-of-diffusion
asked
Mar 11, 2014
by
balaji.thirumalai
1
answer
Match the following column-I and column-II
jeemain
chemistry
physical-chemistry
class11
unit4
chemical-bonding-and-molecular-structure
vsepr(valence-shell-electron-pair-repulsion)theory
q40
difficult
mock
asked
Mar 11, 2014
by
sreemathi.v
1
answer
The ratio of Boyle's temperature and critical temperature for a gas is
jeemain
chemistry
states-of-matter
unit5
class11
medium
q145
mock
asked
Mar 9, 2014
by
sharmaaparna1
1
answer
The arrangement of $(CH_3)_3C-,(cH_3)_2CH-,CH_3CH_2-$ when attached to benzene or an unsaturated group, in increasing order of inductive effect is
jeemain
chemistry
class11
organic-chemistry
q185
easy
mock
basic-organic-chemistry
ch12
asked
Mar 5, 2014
by
meena.p
1
answer
Diazo compounds,sometimes donot respond Lassaigne's test for nitrogen because
jeemain
chemistry
unit13
class12
organic-chemistry
nitrogen
diazonium-salts
q53
easy
mock
asked
Mar 4, 2014
by
sreemathi.v
1
answer
The following equation shows the conversion of limes stone to lime $CaCO_3(s)\longrightarrow CaO(s) + CO_2(g)$. The values of $\Delta H^\circ$ and $\Delta S^\circ$ are $+179.1\; kJ$ and $160.2\; J/K$ respectively at $298\; K$ and $1\; bar$. Assuming that $\Delta H^\circ$ and $\Delta S^\circ$ do not change with temperature, minimum temperature above which conversion of lime stone to lime will be spontaneous is
jeemain
chemistry
class11
unit6
chemical-thermodynamics
medium
mock
asked
Feb 28, 2014
by
mosymeow_1
1
answer
Which of the following have asymmetric carbon atom ?
jeemain
chemistry
class11
organic-chemistry
q45
medium
mock
basic-organic-chemistry
ch12
asked
Feb 22, 2014
by
meena.p
1
answer
An observer can see through a pin hole the top end of a thin rod of height h, placed as shown. The beaker height is 3 h and its radius is h. When the beaker is filled with a liquid up to a height 2h ,he can see the lower end of the rod. Then RI of liquid is .
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
refraction
difficult
mock
aims-12-physics
asked
Feb 19, 2014
by
meena.p
1
answer
$CuSO_4$ solution(250ml) was electrolysed using a platinum anode and a copper cathode.At constant current of 2mA was passed for 16 minutes.It was found that after electrolysis the absorbance of this solution was reduced to 50% of its original value.Then the concentration of copper sulphate in solution to begin with is
jeemain
chemistry
q67
medium
mock
physical-chemistry
class12
ch3
electrochemistry
asked
Feb 17, 2014
by
sreemathi.v
1
answer
For the following disproportion reaction $3Br_2+6OH^{-}\rightarrow 5Br^-+BrO_3^-+3H_2O$. Correct statement below is (Given $Br_2$ molecular mass is 160)
jeemain
chemistry
class12
unit2
q93
difficult
mock
asked
Feb 14, 2014
by
sreemathi.v
1
answer
Lets say you enter a Chess tournament. The probability of winning a game against half the players is 0.3, the probability of winning against one quarter of them is 0.4 and the probability of winning against the remaining one quarter is 0.5. Let's say you play against a randomly chosen opponent. What is your probability of winning?
jeemain
math
probability
cbse
easy
sec-a
class12
multiplication theorem
ch13
additionalproblem
mock
asked
Feb 12, 2014
by
balaji.thirumalai
1
answer
The hydrogen-like species $Li^{2+}$ is in a spherically symmetric state $S_1$ with one radial node. Upon absorbing light the ion undergoes transition to a state $S_2$ has one radial node and its energy is equal to the ground state energy of hydrogen atom. The orbital angular momentum quantum number of the state $S_2$ is
jeemain
chemistry
physical-chemistry
class11
unit2
atomic-structure
quantum-mechanical-model
easy
q200
mock
asked
Feb 10, 2014
by
sharmaaparna1
1
answer
If the line $y=mx+c$ touches the hyperbola $\large\frac{x^2}{a^2}+\frac{y^2}{b^2}$$=1$ then find the value of c .
jeemain
math
class11
coordinate-geometry-conic -sections
hyperbola
ch11
q111
medium
mock
asked
Feb 10, 2014
by
sreemathi.v
1
answer
Eliminate arbitrary constant and obtain differential equation $x^2-y^2= a(x^2+y^2)^2$
jeemain
math
class12
ch9
differential-equations
homogeneous-differential-equations
q91
medium
mock
asked
Feb 7, 2014
by
meena.p
1
answer
When chlorine water is added to an aqueous solution of potassium halide in the presence of chloroform, a violet colour is obtained. On adding more of chlorine water, the violet colour disappears, and a colourless solution is obtained. This test confirms the presence of the following in aqueous solution.
jeemain
chemistry
practical-chemistry
medium
mock
asked
Feb 1, 2014
by
mosymeow_1
1
answer
In the circuit given below the value of current is :
jeemain
physics
class12
ch14
q100
easy
mock
junction-diodes
semiconductor-electronics
asked
Jan 31, 2014
by
meena.p
1
answer
$2K_3Fe(CN)_6+2KOH\rightarrow x+y+z$,$H_2O_2+z\rightarrow y+w$. The $x$ is
jeemain
chemistry
class11
hydrogen
unit9
q91
difficult
mock
asked
Jan 24, 2014
by
sreemathi.v
1
answer
Sum of first $n$ terms of an $AP$ is $kn^2$, sum of their squares will be
jeemain
math
class11
ch9
sequences-and-series
medium
arithmetic-progression
q146
mock
asked
Jan 22, 2014
by
yamini.v
1
answer
The ratio of the coefficient of $x^{10}$ in $(1-x^2)^{10}$ and the term independent of $x$ in $(x-\large\frac{2}{x}$$)^{10}$ is ?
jeemain
math
class11
ch8
binomial-theorem
general-and-middle-terms
easy
mock
asked
Jan 21, 2014
by
rvidyagovindarajan_1
1
answer
$NO_2$ combines with atmospheric moisture to form mixture of $2NO_2+H_2O\rightarrow y + HNO_3$.The y is
jeemain
chemistry
class11
environmental-chemistry
unit14
q81
difficult
mock
asked
Jan 21, 2014
by
sreemathi.v
1
answer
Which statement is logically equivalent to "If Yoda cannot use a lightsaber, then he cannot help Luke win the battle."
jeemain
math
mathematical-reasoning
class11
ch14
easy
logical-operations-(and-or)
q7
mock
asked
Jan 18, 2014
by
thanvigandhi_1
1
answer
If $A(4,7,8),\:B(2,3,4),\:C(2,5,7)$ are vertices of a triangle then the length of internal bisector of angle $A$ is ?
jeemain
math
class11
ch12
3d-geometry
easy
distance-between-two-points
q98
mock
asked
Jan 12, 2014
by
rvidyagovindarajan_1
1
answer
The value of $f(0)$ so that $f(x)=\large\frac{(4^x-1)^3}{\sin\big(\Large\frac{x}{4}\big) \normalsize {\log}(1+\Large\frac{x^2}{3}\big)}$ is continuous everywhere is
jeemain
math
ch13
limits and derivatives
introduction to trigonometric functions
difficult
q185
mock
asked
Jan 6, 2014
by
sreemathi.v
1
answer
The length of median through $A$ of the $\Delta\:ABC$ where $\overrightarrow {AB}=3\hat i+4\hat k\:\:and\:\:\overrightarrow {AC}=5\hat i-2\hat j+4\hat k$ is ?
jeemain
math
class12
ch10
vector-algebra
easy
q102
addition-of-vectors
scalar -product
mock
asked
Dec 30, 2013
by
rvidyagovindarajan_1
1
answer
Evaluate: $\large \int \frac {1 + \tan^2 x} {\sqrt (1 - \tan^2 x)}\; $$dx$
integral-calculus
math
cbse
ch7
sec-a
class12
medium
additionalproblem
jeemain
mock
asked
Dec 22, 2013
by
balaji.thirumalai
1
answer
The volume of gases $H_2, \;CH_4, \;CO_2$ and $NH_3$ absorbed by 1 gm of activated charcoal at 298 K are in the order:
jeemain
aipmt
chemistry
surface-chemistry
class12
unit5
easy
mock
biology
asked
Dec 14, 2013
by
mosymeow_1
1
answer
When a damped spring mass system is forced into oscillations at different frequencies it resonates (amplitude increases and peaks when compared to input amplitude) at its damped natural frequency. For such systems the resonance of acceleration is more when
jeemain
physics
class11
unit10
oscillations-and-waves
difficult
mock
asked
Dec 10, 2013
by
meena.p
1
answer
A kid of mass M stands at the edge of a platform of radius r which can freely rotate about its axis. The moment of inertia of platform is I. The system is at rest when a friend throws a ball of mass m and the kid catches it. If the velocity of the ball is v horizontally along the tangent to the edge of the platform when it was caught by the kid, find the angular speed of the platform after the event.
jeemain
physics
class11
unit5
rotational-motion
angular-momentum-conservation
medium
mock
asked
Nov 28, 2013
by
meena.p
1
answer
The dissociation constant of certain weak acid HA is $1 \times 10^{-4}$. The equilibrium constant for its reaction with strong base BOH is
sat
chemistry
chemical-equilibrium
jeemain
aipmt
equilibrium
difficult
q60
mock
biology
asked
Nov 27, 2013
by
mosymeow_1
1
answer
If a square matrix A is such that $AA^T=I=A^TA$ then $\mid A\mid$ is equal to
jeemain
math
class12
ch3
matrices
q13
transpose-of-a-matrix
difficult
mock
asked
Nov 25, 2013
by
sreemathi.v
1
answer
In how many ways can a mixed doubles game in tennis can be arranged from 5 couples, if no husband and wife play in the same game?
jeemain
math
class11
ch7
permutations-and-combinations
combinations
medium
mock
asked
Nov 23, 2013
by
rvidyagovindarajan_1
1
answer
Solve for $x$: $\tan^{-1}x+2\cot^{-1}x=\large\frac{2\pi}{3}$.
jeemain
math
class12
ch2
inverse-trigonometric-functions
q95
inverse-trignometric-properties
easy
mock
asked
Nov 15, 2013
by
sreemathi.v
1
answer
A tank filled with water has a hole at a certain height from its bottom. The volume of water emerging out per second from the hole does not depend on
jeemain
physics
class11
unit7
properties-of-solids-and-fluids
q1
easy
mock
asked
Oct 2, 2013
by
meena.p
1
answer
An artificial satellite of mass m moves in an orbit whose radius is n times the radius of earth. Assuming the resistance to the motion is proportional to square of velocity ie $F= av^2$ where a is a constant. How long will the satellite take to fall to earth. M-mass of earth R- radius of earth
jeemain
physics
class11
unit6
gravitation
q84
difficult
mock
asked
Aug 26, 2013
by
meena.p
1
answer
A block of mass m is being pulled up a rough inclined by an agent delevering constant power P. The coefficient of friction between block and incline is $\mu$. The maximum speed of the block during the course of ascent is
jeemain
physics
class11
unit4
work-power-energy
q66
medium
mock
asked
Aug 6, 2013
by
meena.p
1
answer
If $z$ is a complex number having non zero imaginary part and $z^2+z+1=a$ where $a$ is real, then $a$ cannot take which of the following values?
jeemain
math
class11
ch5
complex-numbers-and-quadratic-equations
mock
quadratic-equations
difficult
asked
Aug 5, 2013
by
rvidyagovindarajan_1
1
answer
A block is placed on a rough inclined plane of inclination $\theta=30 ^{\circ}$ . If the force to drag it along the plane is to be smaller than to lift it, the coefficient of friction $\mu$ should be less than
jeemain
physics
class11
unit3
laws-of-motion
q53
medium
mock
asked
Jul 11, 2013
by
meena.p
1
answer
A ball is dropped from the roof of a tower of height h.The total distance covered by it in the last second of its motion is equal to the distance covered by it in first three seconds.The value of h is $(g=10 m/s^2)$
jeemain
physics
class11
unit2
kinematics
motion-in-a-straight-line
medium
kinematic-equation-for-accelerated-motion
mock
asked
Jul 1, 2013
by
meena.p
1
answer
Resistance of metal is given by $R=\large\frac{V}{I}$. $V$ is potential difference, $I$ is current. In a circuit $V=(8 \pm 0.5)v$ and current is $I=(2 \pm 0.2)A$. what is value of resistance with percentage error?
jeemain
physics
class11
ch2
units-and-measurement
q48
easy
mock
accuracy-precision-and-errors-in-measurement
asked
Jun 19, 2013
by
meena.p
1
answer
If a relation $R$ on the set $\{1,2,3\}$ is defined as $R=\{(1,2)\}$, then $R$ is
jeemain
math
class12
ch1
relations-and-functions
types
of
relations
easy
mock
asked
May 31, 2013
by
rvidyagovindarajan_1
1
answer
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