Email
Chat with tutors
Login
Ask Questions, Get Answers
Menu
X
home
ask
tuition
questions
practice
papers
mobile
tutors
pricing
X
Recent questions tagged 35
Questions
For the cell reaction $2Fe^{3+}(aq)+2I^{-}(aq)\rightarrow2Fe^{2+}(aq)+I_2(aq)$ $E^{\ominus}_{cell}$ cell E 0.24V at 298 K. The standard Gibbs energy $(\triangle^{\circ}_{r}G^{\ominus})$of the cell reaction is : [Given that Faraday constant $F = 96500 C \;mol^{-1}$
neet
chemistry
past papers
2019
35
asked
Jul 8, 2019
by
pady_1
0
answers
The charges $+ 5 \; \mu C$ and $+ 10 \; \mu C$ are placed $20\; cm$ apart. The electric field at the mid point between the two charges is :
jeemain
physics
past papers
1998
35
asked
Dec 19, 2018
by
pady_1
0
answers
In a spectrometer experiment three prisms $A,\;B$ and $C$ with same angle of prism but of different materials of refractive indices $\mu_A = 1.33, \; \mu_B = 1.55, \; \mu_C = 1.44$ are used. The corresponding angles of minimum deviation $D_A,\;D_B,\;D_C$ measured will be such that :
jeemain
physics
past papers
1999
35
asked
Dec 19, 2018
by
pady_1
1
answer
The height of the point vertically above the earth's surface at which acceleration due to gravity becomes 1% of its value at the surface is : (Radius of the earth = R)
jeemain
physics
past papers
2000
35
asked
Dec 19, 2018
by
pady_1
0
answers
An object is projeced with a velocity of $20\;m/s$ making an angle of $45^{\circ}$ with horizontal. The equation for the trajectory is $"h = Ax - Bx^2"$ where $'h'$ is height, $'x'$ is horizontal distance A and B are constats. The ratio $A : B$ is : $(g = 10\;m/s^2)$
jeemain
physics
past papers
2001
35
asked
Dec 11, 2018
by
pady_1
0
answers
Which of the following is more close to a black body ?
jeemain
physics
past papers
2002
35
asked
Dec 11, 2018
by
pady_1
0
answers
A mass M is suspended from a spring of negligible mass. The spring is pulled a little and then released so that the mass executes SHM of time period T. If the mass is increased by $m$, the time period becomes $5T/3$, then the ratio of $\frac{m}{M}$ is :
jeemain
physics
past papers
2003
35
asked
Dec 11, 2018
by
pady_1
0
answers
If the curves $y^2 = 6x, \; 9x^2 + by^2=16$ intersect each other at right angles, then the value of $b$ is :
jeemain
math
past papers
2018
35
asked
Dec 11, 2018
by
pady_1
1
answer
A slender uniform rod of mass M and length l is pivoted at one end so that it can rotate in a vertical plane (see figure). There is negligible friction at the pivot. The free end is held vertically above the pivot and then released. the angular acceleration of the rod when it makes an angle $\theta$ with the vertical is <br>
jeemain
physics
past papers
2017
35
asked
Dec 11, 2018
by
pady_1
0
answers
The heats of combustion of carbon and carbon monoxide are $−393.5$ and $−283.5\; kJ \;mol^{−1}$ , respectively. The heat of formation (in kJ) of carbon monoxide per mole is :
jeemain
chemistry
past papers
2016
35
asked
Dec 11, 2018
by
pady_1
0
answers
The heat of atomization of methane and ethane are $360\; kJ/mol$ and $620\; kJ/mol$, respectively. The longest wavelength of light capable of breaking the $C - C$ bond is (Avogadro number =$ 6.02 \times 10^{23} ,\; h =6.62 \times 10^{-34}\; J s$) :
jeemain
chemistry
past papers
2015
35
asked
Dec 11, 2018
by
pady_1
0
answers
The variance of first 50 even natural numbers is
jeemain
math
past papers
2014
35
asked
Dec 11, 2018
by
pady_1
1
answer
All the students of a class performed poorly in Mathematics. The teacher decided to give grace marks of 10 to each of the students. Which of the following statistical measures will not change even after the grace marks were given ?
jeemain
math
past papers
2013
35
asked
Dec 11, 2018
by
pady_1
1
answer
If a simple pendulum has significant amplitude (up to a factor of 1/e of original) only in the period between $t = Os$ to $ t = \tau s$, then $\tau$ may be called the average life of the pendulum. When the spherical bob of the pendulum suffers a retardation (due to viscous drag) proportional to its velocity, with 'b' as the constant of proportionality, the average life time of the pendulum is ( assuming damping is small ) in seconds :
jeemain
physics
past papers
2012
35
asked
Dec 11, 2018
by
pady_1
0
answers
Statement-1: The number of ways of distributing 10 identical balls in 4 distinct boxes such that no box is empty is $^9C_3$ <br> Statement-2 : The number of ways of choosing any 3 places from 9 different places is $^9C_3$.
jeemain
math
past papers
2011
35
asked
Dec 11, 2018
by
pady_1
0
answers
A ball is made of a material of density $\rho$ where $\rho_{oil} < \rho < \rho_{water}$ with $\rho_{oil}$ and $\rho_{water}$ representing the densities of oil and water, respectively. The oil and water are immiscible. If the above ball is in equilibrium in a mixture of this oil and water, which of the following pictures represents its equilibrium position ?
jeemain
physics
past papers
2010
35
asked
Dec 11, 2018
by
pady_1
0
answers
In which of the following arrangements, the sequence is not strictly according to the property written against it ?
jeemain
chemistry
past papers
2009
35
asked
Nov 29, 2018
by
pady_1
0
answers
The quadratic equations $x^2 – 6x + a = 0$ and $x^2 – cx + 6 = 0$ have one root in common. The other roots of the first and second equations are integers in the ratio 4 : 3. Then the common root is
jeemain
math
past papers
2008
35
asked
Nov 29, 2018
by
pady_1
0
answers
Let $f: R\to R$ be a function defined by $f(x) = min \{ x + 1, |x| + 1\}$. Then which of the following is true ?
jeemain
math
past papers
2007
35
asked
Nov 29, 2018
by
pady_1
0
answers
The flux linked with a coil at any instant 't' is given by : <br> $\phi = 10t^2 - 50 t + 250$ <br> The induced emf at $t =3s$ is :
jeemain
physics
past papers
2006
35
asked
Nov 13, 2018
by
pady_1
0
answers
If $x \frac{dy}{dx} = y (\log y - \log x + 1)$, then the solution of the equation is :
jeemain
math
past papers
2005
35
asked
Nov 5, 2018
by
pady_1
0
answers
A system goes from A to B via two process I and II as shown in figure. If $\Delta U_1$ and $\Delta U_2$ are the changes in internal energies in the process I and II respectively, then : <br>
jeemain
physics
past papers
2005
35
asked
Nov 5, 2018
by
pady_1
0
answers
$\begin{align*} \displaystyle \lim_{n \to \infty} \displaystyle\sum_{r=1}^{n} \frac{1}{n} e^{^{\frac{r}{n}}} \end{align*}$ is
jeemain
math
past papers
2004
35
asked
Nov 5, 2018
by
pady_1
0
answers
Three objects, A : (a solid sphere), B : (a thin circular disk) and C : (a circular ring), each have the same mass M and radius R. They all spin with the same angular speed $\omega$ about their own symmetry axes. The amounts of work (W) required to bring them to rest, would satisfy the relation
neet
physics
past papers
2018
35
asked
Aug 21, 2018
by
pady_1
1
answer
The correct statement regarding electrophile is :
neet
chemistry
past papers
2017
35
asked
Aug 21, 2018
by
pady_1
1
answer
Consider the nitration of benzene using mixed conc. $H_2SO_4$ and $HNO_3$. If a large amount of $KHSO_4$ is added to the mixture, the rate of nitration will be :
neet
chemistry
past papers
2016
35
asked
Aug 21, 2018
by
pady_1
1
answer
The rate constant of the reaction $A \to B$ is $0.6 \times 10^{-3} $mole per second. If the concentration of A is 5 M, then cencentration of B after 20 minutes is -
neet
chemistry
past papers
2015
35
asked
Aug 21, 2018
by
pady_1
0
answers
A beam of light of $\lambda$ = 600 nm from a distant source falls on a single slit 1 mm wide and the resulting diffraction pattern is observed on a screen 2m away. The distance between first dark fringes on either side of the central bright fringe is :
neet
physics
past papers
2014
35
asked
Aug 20, 2018
by
pady_1
1
answer
The half-life of a radioactive isotope ‘X’ is 20 years. It decays to another element ‘Y’ which is stable. The two elements ‘X’ and ‘Y’ were found to be in the ratio 1 : 7 in a sample of a given rock. The age of the rock is estimated to be -
neet
physics
past papers
2013
35
asked
Aug 20, 2018
by
pady_1
1
answer
The magnifying power of a teloscope is 9. When it is adjusted for parallel rays the distance between the objective and eyepiece is 20 cm. The focal length of lenses are
neet
physics
past papers
2012
35
asked
Aug 20, 2018
by
pady_1
1
answer
The decreasing order of wavelength of infrared, microwave, ultraviolet and gamma rays is :
neet
physics
past papers
2011
35
asked
Aug 16, 2018
by
pady_1
1
answer
A lens having focal length f and aperture of diameter d forms an image of intensity I. Aperture of diameter $\frac{d}{2}$ in central region of lens is covered by a black paper. Focal length of lens and intensity of image now will be respectively –
neet
physics
past papers
2010
35
asked
Jul 26, 2018
by
pady_1
1
answer
Three concentric spherical shells have radii a, b, and c(a < b < c) and have surface charge densities $\sigma$,$-\sigma$ and $\sigma$ respectively. If $V_A,V_B,V_C$ denote the potentials of the three shells, then, for c = a + b, we have :
neet
physics
past papers
2009
35
asked
Jul 26, 2018
by
pady_1
1
answer
The ground state energy of hydrogen atom is –13.6 eV. When its electron is in the first excited state, its excitation energy is -
neet
physics
past papers
2008
35
asked
Jul 26, 2018
by
pady_1
1
answer
The primary and secondary coils of a transformer have 50 and 1500 turns respectively. If the magnetic flux $\phi$ linked with the primary coil is given by $\phi = \phi_0 + 4t$, where $\phi$ is in webers, t is time in seconds and $\phi_0$ is a constant, the output voltage across the secondary coil is :
neet
physics
past papers
2007
35
asked
Jul 26, 2018
by
pady_1
1
answer
Two sound waves with wavelength 5.0 m and 5.5 m respectively, each propagate in a gas with velocity 330 m/s. We expect the following number of beats per second:-
neet
physics
past papers
2006
35
asked
Jul 25, 2018
by
pady_1
1
answer
Choose the only false statement from the following-
neet
physics
past papers
2005
35
asked
Jul 24, 2018
by
pady_1
1
answer
Three particles, each of mass m gram, are situated at the vertices of an equilateral triangle ABC of side l cm. (as shown in the figure). The moment of inertia of the system about a line AX perpendicular to AB and in the plane of ABC, in gram$\; cm ^2$ units will be :- <br>
neet
physics
past papers
2004
35
asked
Jul 24, 2018
by
pady_1
1
answer
The volume occupied by an atom is greater than the volume of the nucleus by a factor of about
neet
physics
past papers
2003
35
asked
Jul 24, 2018
by
pady_1
1
answer
The given truth table is for which logic gate : -
neet
physics
past papers
2002
35
asked
Jul 23, 2018
by
pady_1
1
answer
For a coil having $L=2$ mh, current flow through it is $I = t^2 e^{-t}$ then the time at which emf become zero :-
neet
physics
past papers
2001
35
asked
Jul 20, 2018
by
pady_1
1
answer
For the adjoining diagram, a triangular lamina is shown the correct relation between $I_1$, $I_2$ & $I_3$ is (I – moment of inertia)
neet
physics
past papers
2000
35
asked
Jul 20, 2018
by
pady_1
1
answer
A standing wave having 3 nodes and 2 antinodes is formed between 1.21 Å distance then the wavelength is :
neet
physics
past papers
1998
35
asked
Jun 15, 2018
by
pady_1
1
answer
Find the rule for pattern shown below, 800 850 900 950 1000
class5
math
olympiad
logical
analytical
reasoning
35
asked
Dec 31, 2015
by
pady_1
1
answer
Which of the following letters does not have any line of symmetry?
class5
math
olympiad
data handling
35
asked
Dec 31, 2015
by
pady_1
1
answer
Divide 63.924 g by 20 g.
class5
math
olympiad
measurements
35
asked
Dec 31, 2015
by
pady_1
0
answers
Write the fraction $\large\frac{9}{36}$ in simplest/lowest form.
class5
math
olympiad
fractions
decimals
35
asked
Dec 31, 2015
by
pady_1
0
answers
What % is 30 of 150?
class5
math
olympiad
computation
35
asked
Dec 31, 2015
by
pady_1
0
answers
To see more, click for the
full list of questions
or
popular tags
.
Home
Ask
Tuition
Questions
Practice
Your payment for
is successful.
Continue
...