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questions
List of practice Questions
Which of the following is an example of homogeneous equilibrium?
Chemistry
Equilibrium
Which of the following has maximum pH ?
Chemistry
Equilibrium
Which of the following has highest pH ?
Chemistry
Equilibrium
1 mole of
$N_2$
and 2 moles of
$H_2$
are allowed to react in a 1
$dm^3$
vessel. At equilibrium 0.8 mole of
$NH_3$
is formed. The concentration of
$H_2$
in the vessel is
Chemistry
Equilibrium
When
$H_2$
and
$I_2$
are mixed and equilibrium is attained, then
Chemistry
Equilibrium
Formaldehyde polymerizes to form glucose according to the reaction
$ 6HCHO\rightleftharpoons {{C}_{6}}{{H}_{12}}{{O}_{6}} $
The theoretically computed equilibrium constant for this reaction is found to be
$ 6\times {{10}^{22}} $
If
$1\, M$
solution of glucose dissociates according to the above equilibrium, the concentration of formaldehyde in the solution will be
Chemistry
Equilibrium
A reversible chemical reaction having two reactants in equilibrium. If the concentrations of the reactants are doubled, then the equilibrium constant will
Chemistry
Equilibrium
If acetic acid is mixed with sodium acetate then
$H^{+}$
ion concentration will be
Chemistry
Equilibrium
A weak acid
$HX$
has the dissociation constant
$ 1\times 10^{-5}M $
. It forms a salt
$NaX$
on reaction with alkali. The degree of hydrolysis of
$0.1\, M$
solution of
$ NaX $
is
Chemistry
Equilibrium
A solution of
$MgCl_2$
in water has pH
Chemistry
Equilibrium
What is equilibrium expression for the reaction,
$ {2NO_{(g)} + Cl_{2(g)} <=> 2NOCl_{(g)} }$
?
Chemistry
Equilibrium
Given that, the solubility product $K_{sp}$ of $AgCl$ is $1.8 \times 10^{-10}$, the concentration of $Cl^-$ ions that must be exceeded before $AgCl$ will precipitate from a solution containing $4 \times 10^{-3}\, M \,Ag^+$ ions is
Chemistry
Equilibrium
Degree of dissociation of $0.1 \,N \,CH_{3}COOH$ is $(K_{\text{acid}}=1\times10^{-5})$
Chemistry
Equilibrium
A particle moves through angular displacement
$ \theta $
on a circular path of radius
$r$
. The linear displacement will be :
BHU UET
Physics
Uniform Circular Motion
A wheel has a speed of 1200 revolutions per minute and is made to slow down at a rate of
$4radians/s^2$
The number of revolutions it makes before coming to rest is
Physics
Uniform Circular Motion
Radius of curved road on a highway is
$R$
. Width of road is
$6$
. The outer edge of road is raised by
$h$
w.r.t. inner edge so that a car with velocity
$\upsilon$
can pass safe over it. The value of
$h$
is
Physics
Uniform Circular Motion
From the top of a building a ball is dropped while another is thrown horizontally at the same time. Which ball will strike the ground first?
BHU UET
Physics
Projectile motion
The vertical component of velocity of a projectile at its maximum height (
$u =$
velocity of projection,
$\theta =$
angle of projection) is
KEAM
Physics
Projectile motion
What is the relationship between time of flight
$T$
and horizontal range
$R$
? (where
$\theta$
is angle of projection with the horizontal)
Physics
Projectile motion
A ball is thrown from a point with a speed
$v_0$
at an angle of projection
$\theta$
. From the same point and at the same instant, a person starts running with a constant speed
$\frac{v_0}{2}$
to catch the ball. Will the person be able to catch the ball? If yes, what should be the angle of projection?
Physics
Projectile motion
Parabolic path of a projectile as seen by another similar projectile is.
Physics
Projectile motion
The ceiling of a hall is
$40\,m$
high. For maximum horizontal distance, the angle at which the ball may be thrown with a speed of
$56\,ms^{-1}$
without hitting the ceiling of the hall is
Physics
Projectile motion
The equations of motion of a projectile are given by
$x = 36t\, m$
and
$2y = 96t - 9.8t^2\,m$
. The angle of projection is
Physics
Projectile motion
The time taken by a vertically projected body before reaching the ground is
Physics
Projectile motion
Two bodies are thrown from the same point with the same velocity of
$50ms^{-1}$
if their angles of projection are complimentary to each other and the difference of maximum height are
$(g=10\, m/s^2)$
.
Physics
Projectile motion
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