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questions
List of practice Questions
The solubility product of AgI at 25ºC is 1.0×10
–16
mol
2
L
–2
. The solubility of AgI in 10
–4
N solution of KI at 25ºC is approximately (in mol L
–1
):
NEET (UG) - 2003
NEET (UG)
Chemistry
Equilibrium
The mass number of a nucleus is
NEET (UG) - 2003
NEET (UG)
Physics
Nuclear physics
The angular speed of the electric in the nth orbit of Bohr hydrogen atom is
JKCET - 2003
JKCET
Physics
Atoms
A particle originally at rest at the highest point of a smooth circle in a vertical plane, is gently pushed and starts sliding/along the circle. It will leave the circle at
$a'$
vertical distance
$h$
. below the highest point such that
JKCET - 2003
JKCET
Physics
Motion in a plane
Which of the following is not an amino acid?
JKCET - 2003
JKCET
Chemistry
Biomolecules
In the reaction
$2 A+B \rightarrow A_{2} B$
, if the concentration of
$A$
is doubled and that of
$B$
is halved, then the rate of reaction will
JKCET - 2003
JKCET
Chemistry
Rate of a Chemical Reaction
A ball hangs from a string inside a train moving along a horizontal straight track. The string is observed to incline towards the rear of the train making a constant small angle with the vertical. It shows that the train is:
KEAM - 2003
KEAM
Physics
Acceleration
A plate has a length
$ 5\pm 0.1\text{ }cm $
and breadth
$ 2\pm 0.01\text{ }cm $
. Then the area of the plate is:
KEAM - 2003
KEAM
Physics
Units and measurement
The Arrhenius equation expressing the effect of temperature on the rate constant of a reaction is
JKCET - 2003
JKCET
Chemistry
Rate of a Chemical Reaction
For which of the following reactions,
$K_{p}=K_{c} ?$
JKCET - 2003
JKCET
Chemistry
Law Of Chemical Equilibrium And Equilibrium Constant
The reading of voltmeter in the circuit shown is
Rajasthan PMT - 2003
Rajasthan PMT
Physics
Current electricity
Ostwald dilution law is applicable to
JKCET - 2003
JKCET
Chemistry
Law Of Chemical Equilibrium And Equilibrium Constant
If the half-time for a particular reaction is found to be constant and independent of the initial concentration of the reactants, then the reaction is of
JKCET - 2003
JKCET
Chemistry
Rate of a Chemical Reaction
Which of the following is a non-colligative property?
JKCET - 2003
JKCET
Chemistry
Colligative Properties
Two vectors are given by
$\vec{A}=\left(3\hat{i} +\hat{j}+3\hat{k}\right)$
and
$ \vec{B}=\left(3\hat{i} +5\hat{j}-2\hat{k}\right)$
. Find the third vector
$\vec{C}$
if
$\vec{A}+3\vec{B}-\vec{C}=0.$
JKCET - 2003
JKCET
Physics
Motion in a plane
Two projectiles are fired at different angles with the same magnitude of velocity, such that they have the same range. At what angles they might have been projected?
JKCET - 2003
JKCET
Physics
Projectile motion
How will increase of pressure affect the equation?
$C(s)+H_{2} O(g) C O(g)+H_{2}(g)$
JKCET - 2003
JKCET
Chemistry
Ionic Equilibrium In Solution
Normality of
$2 MH _{2} SO _{4}$
is
JKCET - 2003
JKCET
Chemistry
Mole concept and Molar Masses
The current gain a of a transistor is $0.9.$ The transistor is connected to common base configuration. What would be the change in collector current when base current changes by $ 4\,mA $ ?
JKCET - 2003
JKCET
Physics
Alternating current
In a full wave rectifier circuit operating from $ 50\,Hz $ main frequency, the fundamental frequency in the ripple would be
JKCET - 2003
JKCET
Physics
Alternating current
Consider the following statements A and B. Identify the correct answers. A. A zener diode is always connected in reverse bias. B. The potential barrier of a p-n junction lies between 0.1 to 0.3 V, approximately.
EAMCET - 2003
EAMCET
Physics
Semiconductor electronics: materials, devices and simple circuits
In acidic medium, dichromate ion oxidises ferrous ion to ferric ion. If the gram molecular weight of potassium dichromate is 294 g, its gram equivalent weight is ...... g.
EAMCET - 2003
EAMCET
Chemistry
d block elements
Which one of the following compounds forms a red coloured solution on treatment with neutral $ \text{FeC}{{\text{l}}_{\text{3}}} $ solution ?
EAMCET - 2003
EAMCET
Chemistry
Chemical Reactions
2 kg of ice at -20
$^{\circ}$
C is mixed with 5 kg of water at 20
$^{\circ}$
C in an insulating vessel having a negligible heat capacity. Calculate the final mass of water remaining in the container. It is given that the specific heats of water and ice are 1 kcal/kg /
$^{\circ}$
C and 0.5 kcal/kg /
$^{\circ}$
C while the latent heat of fusion of ice is 80 kcal/kg
JEE Advanced - 2003
JEE Advanced
Physics
Thermodynamics
During prolonged fastings, in what sequence are the following organic compounds used up by the body ?
NEET (UG) - 2003
NEET (UG)
Biology
Digestion and absorption
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