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EAMCET
EAMCET
Physics
Chemistry
Mathematics
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The relative lowering of vapour pressure is equal to:
jeemain
eamcet
chemistry
1991
q11
asked
Sep 11, 2013
by
meena.p
1
answer
Three faradays of electricity was passed through an aqueous solution of iron (II) bromide. The weight of iron metal (at. wt.= 56) deposited at the cathode is (in grams):
jeemain
eamcet
chemistry
1991
q10
asked
Sep 11, 2013
by
meena.p
1
answer
The rms velocity of an ideal gas at $27^{\circ}C$ is $0.3\;m/s$. Its rms velocity at $927^{\circ}C$(in m/s.) is :
jeemain
eamcet
chemistry
1991
q9
asked
Sep 11, 2013
by
meena.p
1
answer
The energy of the electron in the hydrogen atom is given by the expression:
jeemain
eamcet
chemistry
1991
q8
asked
Sep 11, 2013
by
meena.p
1
answer
A gaseous mixture contains $56\;g$ of $N_2,44\;g $ of $\; CO_2$ and $16\; g$ of $CH_4$. The total pressure of the mixture is $720 \;mm$ Hg. The partial pressure of $CH_4$ is :
jeemain
eamcet
chemistry
1991
q7
asked
Sep 11, 2013
by
meena.p
1
answer
Aniline is treated with $NaNO_2$ and $HCl$ at $0^{\circ} C$, the product formed is
jeemain
eamcet
chemistry
1991
q6
asked
Sep 11, 2013
by
meena.p
1
answer
Which one of the following series of lines is found in the UV region of atomic spectrum of hydrogen?
jeemain
eamcet
chemistry
1991
q5
asked
Sep 11, 2013
by
meena.p
1
answer
A ratio isotope has a half life 10 days. If today there is 125 g of it left, what was its weight 40 days earlier?
jeemain
eamcet
chemistry
1991
q4
asked
Sep 11, 2013
by
meena.p
1
answer
When $4p$ orbital in any atom is filled completely, the next electron goes in
jeemain
eamcet
chemistry
1991
q3
asked
Sep 11, 2013
by
meena.p
1
answer
An organic compound has an empirical formula $CH_2O$. Its vapour density is 45. The molecular formula of compound is :
jeemain
eamcet
chemistry
1991
q2
asked
Sep 11, 2013
by
meena.p
1
answer
Which of the gases contain the same number of molecules as that of $16\; g$ oxygen ?
jeemain
eamcet
chemistry
1991
q1
asked
Sep 11, 2013
by
meena.p
1
answer
Material getting magnetized by orientation of atomic magnetic moment in external magnetic fields are ............. .
jeemain
eamcet
physics
1991
fitb
q30
asked
Sep 11, 2013
by
meena.p
0
answers
A boat is moving with a velocity $3 \hat {i}+4 \hat {j};$ with respect to ground the water in the river is moving with a velocity $-3 \hat {i}- 4 \hat {j}$ w.r.t. ground The relative velocity of boat w.r.t. water is ................ .
jeemain
eamcet
physics
1991
fitb
q29
asked
Sep 11, 2013
by
meena.p
0
answers
The ratio of magnetic moments of two short magnets which give deflection in $\tan B$ position when placed at $12\;cm$ and $18\;cm$ from center of a deflection magnetometer is ................... .
jeemain
eamcet
physics
1991
fitb
q28
asked
Sep 11, 2013
by
meena.p
1
answer
The acceleration due to gravity at a height (take $g=10 \;m/s^2$ on earth surface) above earth's surface is $9\;m/s^2$. It value at a point, at an equal distance below the surface of the earth is ................... $m/s^2$
jeemain
eamcet
physics
1991
fitb
q27
asked
Sep 11, 2013
by
meena.p
0
answers
When boron is added as impurity to silicon, the resulting material is ................. semiconductor.
jeemain
eamcet
physics
1991
fitb
q26
asked
Sep 11, 2013
by
meena.p
1
answer
Siemen is the SI unit for ............... .
jeemain
eamcet
physics
1991
fitb
q25
asked
Sep 11, 2013
by
meena.p
0
answers
The distance between the eye lense and cross wire in a Ramsden eye piece, which has a field lens of focal length 1.2 cm is ................. cm.
jeemain
eamcet
physics
1991
fitb
q24
asked
Sep 11, 2013
by
meena.p
0
answers
The method of connecting the negative pole of battery to $\mathit{p}\;$- material and positive pole to $\mathit{n}\;$-material of a $\mathit{p-n}\;$ junction is called .................... connection.
jeemain
eamcet
physics
1991
fitb
q23
asked
Sep 11, 2013
by
meena.p
0
answers
A particle of mass $4 \;m $ which is at rest explodes into three fragments. Two of the frangements each of mass $\mathit{m}\;$ are found to move with a speed of $\mathit{v}\;$ each in mutually perpendicular direction. The total energy released in the process is ................ .
jeemain
eamcet
physics
1991
fitb
q22
asked
Sep 11, 2013
by
meena.p
0
answers
If $ 4 \times 10^{20}$ eV of energy is required to move a charge of $6.25 \;C$ between two points, the PD between them is ............ volts.
jeemain
eamcet
physics
1991
fitb
q21
asked
Sep 11, 2013
by
meena.p
0
answers
A simple harmonic oscillation is represented by the equation $\gamma =0.40 \sin \bigg[\large\frac{40\;t}{7}$$+0.61\bigg]$ where $\gamma$ and $\mathit{t}\;$ are in meters and seconds respectively. The value of time period is ........... sec.
jeemain
eamcet
physics
1991
fitb
q20
asked
Sep 11, 2013
by
meena.p
0
answers
To minimize spherical aberration two lenses of focal length $\mathit{f_1}\;$ and $\mathit{f_2}\;$ are placed with a distance of separation equal to .................. .
jeemain
eamcet
physics
1991
fitb
q19
asked
Sep 11, 2013
by
meena.p
0
answers
A body of mass $\mathit{m}\;$ thrown horizontally with velocity $\mathit{v}\;$, from the top of tower of height $\mathit{h}\;$, touches the level of ground at a distance of 250 m from the foot of the tower. A body of mass $2\mathit{m}\;$, thrown horizontally with velocity $\mathit{v/}\;2$, from the top of a tower of height $4\mathit{\;h}\;$ will touch the level ground at a distance .................. meters from the foot of the tower.
jeemain
eamcet
physics
1991
fitb
q18
asked
Sep 11, 2013
by
meena.p
0
answers
When the radius of a circular current carrying coil is doubled, and current in it is halved, the magnetic dipole moment of coil originally 4 units become ............... units.
jeemain
eamcet
physics
1991
fitb
q17
asked
Sep 11, 2013
by
meena.p
0
answers
If the escape velocity on earth is 11.2 km/sec, its value for a planet having double the radius and 8 times the mass of earth is .............. m/s.
jeemain
eamcet
physics
1991
fitb
q16
asked
Sep 11, 2013
by
meena.p
1
answer
Five equal capacitors connected in series have a resultant capacitance of $4 \mu F$. The total energy stored in these when these are connected in parallel and charged to $400\; V$, is ................ joules.
jeemain
eamcet
physics
1991
fitb
q15
asked
Sep 11, 2013
by
meena.p
0
answers
A body freely falling from rest has a velocity $\mathit{v}\;$ after it falls through a distance $\mathit{h}\;$. The distance it has to fall down further, for its velocity to become double, is .................. times $\mathit{h}\;$.
jeemain
eamcet
physics
1991
fitb
q14
asked
Sep 11, 2013
by
meena.p
0
answers
In deriving Newton's formula for velocity of sound, the changes in volume of air are assumed to be ................. .
jeemain
eamcet
physics
1991
fitb
q13
asked
Sep 11, 2013
by
meena.p
0
answers
A railway truck of mass $\mathit{m}\;= 2 \times 10 ^4\;kg$ travelling at $0.5\; m/s$ collides with another of half of its mass moving in opposite direction with a velocity $0.4\; m/s $. If they collide each other the combined velocity is ................... m/s.
jeemain
eamcet
physics
1991
fitb
q12
asked
Sep 11, 2013
by
meena.p
0
answers
A double convex lens of $\mathit{f}\;=6$ cm is made of glass of refractive index $1.5$. The radius of curvature of the surface which is doubled that of other surface will be ................... cm.
jeemain
eamcet
physics
1991
fitb
q11
asked
Sep 11, 2013
by
meena.p
0
answers
In photoelectric effect the slope of straight line graph between stopping potential and frequency of incident radiation gives the ratio of Planck constant to ................ .
jeemain
eamcet
physics
1991
fitb
q10
asked
Sep 11, 2013
by
meena.p
2
answers
A ball of 1 g released down an inclined plane describes a circle of radius 10 cm in the vertical plane on reaching the bottom. The minimum height of the inclined plane is ................ cm.
jeemain
eamcet
physics
1991
fitb
q9
asked
Sep 11, 2013
by
meena.p
1
answer
The resistance to be used to convert a $50\; \Omega$ resistance galvanometer of 10 mA into 500 V range voltmeter is ................. .
jeemain
eamcet
physics
1991
fitb
q8
asked
Sep 11, 2013
by
meena.p
0
answers
Ice contracts on melting when subjected to pressure and the pressure is increased the melting point .................... .
jeemain
eamcet
physics
1991
fitb
q7
asked
Sep 11, 2013
by
meena.p
0
answers
A body vibrating with a certain frequency sends waves of wavelength 15 cm in a medium $\mathit{A}\;$ and 20 cm in medium $\mathit{B}\;$. If $\mathit{v}\;$ of waves in $\mathit{A}\;$ is 120 m/s. That in $\mathit{B}\;$ will be ................ m/s.
jeemain
eamcet
physics
1991
fitb
q6
asked
Sep 11, 2013
by
meena.p
0
answers
A car tyre has air at 1.5 atm at 300 K. If $\mathit{P}\;$ increases to 1.75 atm with $\mathit{V}\;$ same. The temperature will be ............... .
jeemain
eamcet
physics
1991
fitb
q5
asked
Sep 11, 2013
by
meena.p
0
answers
From Bohr's theory when electrons jump from higher energy orbits to second orbit spectral lines that occur belongs to ................ series.
jeemain
eamcet
physics
1991
fitb
q4
asked
Sep 10, 2013
by
meena.p
1
answer
The energy level stationed at the center of forbidden energy gap of an intrinsic semiconductor is .............. .
jeemain
eamcet
physics
1991
fitb
q3
asked
Sep 10, 2013
by
meena.p
0
answers
If surface tension of $H_2O$ is $7.3 \times 10^{-2}\; N/m$. The excess pressure inside spherical drop of radius 1 mm is ............. $N/m^2$.
jeemain
eamcet
physics
1991
fitb
q2
asked
Sep 10, 2013
by
meena.p
0
answers
A radioactive source has a half- life of 3 hours. A freshly prepared sample of the same exhibits radioactivity 16 times the permissible safe value. The minimum time after which it would be possible to work safely with the source is ............ hours.
jeemain
eamcet
physics
1991
fitb
q1
asked
Sep 10, 2013
by
meena.p
1
answer
If $\overrightarrow {A}, \overrightarrow {B}$ are perpendicular vectors $ \overrightarrow {A}=5 \hat {i}+7 \hat {j}-3 \hat {k}.\quad \overrightarrow {B}=2 \hat {i}+2 \hat {j}-c \hat {k}$. The value of $\mathit{c}\;$ is:
jeemain
eamcet
physics
1991
q20
asked
Sep 10, 2013
by
meena.p
1
answer
When a material is placed in magnetic field B but opposite in direction is reduced. The material is:
jeemain
eamcet
physics
1991
q19
asked
Sep 10, 2013
by
meena.p
1
answer
A piece of aluminium and germanium each are cooled from $T_1\;K $ to $T_2\;K$. The resistance of:
jeemain
eamcet
physics
1991
q18
asked
Sep 10, 2013
by
meena.p
1
answer
A charge $\mathit{q}\;$ is placed at the center of line joining two equal charges Q. The system of 3 charges will be in equilibrium if $\mathit{q}\;$ is equal to:
jeemain
eamcet
physics
1991
q17
asked
Sep 10, 2013
by
meena.p
1
answer
$\phi$ of vibration of any particle in a standing wave produced along a stretched string depends on:
jeemain
eamcet
physics
1991
q16
asked
Sep 10, 2013
by
meena.p
1
answer
Light of frequency 1.5 times the threshold frequency, incident on a photo sensitive material. If the frequency of incident light is halved and the intensity is doubled the photo current becomes:
jeemain
eamcet
physics
1991
q15
asked
Sep 10, 2013
by
meena.p
1
answer
The work done to get n smaller equal size spherical drops from a bigger size spherical drop of water is proportional to :
jeemain
eamcet
physics
1991
q14
asked
Sep 10, 2013
by
meena.p
1
answer
The average force that is necessary to stop a hammer with $25 $ N/s momentum in 0.05 $s$ is:
jeemain
eamcet
physics
1991
q13
asked
Sep 10, 2013
by
meena.p
1
answer
A parallel plate capacitor is charged and the charging battery is then disconnected. If the plates of the capacitor are moved further apart by means of insulting handles:
jeemain
eamcet
physics
1991
q12
asked
Sep 10, 2013
by
meena.p
1
answer
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