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JKCET
List of top Questions asked in JKCET
If kinetic energy of a body is increased by
$300$
% then percentage change in momentum will be
JKCET - 2017
JKCET
Physics
work, energy and power
What are the hydrolysis products of sucrose?
JKCET - 2017
JKCET
Chemistry
Biomolecules
For
$ 'c' $
is the arbitrary constant, the solution of the differential equation
$ (x^2 + 2y^2)dx - xy\,dy= 0 $
is
JKCET - 2017
JKCET
Mathematics
Differential equations
What will be the boiling point of
$ 30 \,g $
benzene containing
$ 0.75\, g $
of benzoic acid which undergoes
$ 75\% $
dimerization? Boiling point of pure benzene
$ = 80.1^{\circ}C $
and
$ K_b = 2.53 \,K mol^{-1}\, kg $
JKCET - 2017
JKCET
Chemistry
Solutions
Under what condition, will
$ x/m $
value be equal to pressure of the gas on the surface of the absorbent?
JKCET - 2017
JKCET
Chemistry
Surface Chemistry
Let the energy of an
$ n^{th} $
orbit of
$ H $
atom be
$ -21.76 \times 10^{19}/n^2\, J $
. What will be the longest wavelength of energy required to remove an electron from the third orbit?
JKCET - 2017
JKCET
Chemistry
Structure of atom
Hoffmann's bromamide reaction is used to
JKCET - 2017
JKCET
Chemistry
Amines
The kinetic energy of electron and photon arc the same. The relation between their De - Broglie wavelengths
$ \lambda _e $
and
$ \lambda _p $
is
JKCET - 2017
JKCET
Physics
de broglie hypothesis
What should be possible
$ d $
-orbital energy levels of
$ Ni $
in
$ [Ni(CN)_4]^{2-} $
?
JKCET - 2017
JKCET
Chemistry
coordination compounds
A solid cylinder of mass
$ M $
and radius
$ R $
rolls on a flat surface. Find its moment of inertia about the line of contact.
JKCET - 2017
JKCET
Physics
System of Particles & Rotational Motion
Why is
$ F_2 $
the strongest oxidizing agent (among halogens) although electron affinity of
$ Cl_2 $
is higher than
$ F_2 $
?
JKCET - 2017
JKCET
Chemistry
p -Block Elements
What is the correct order of bond strength for
$ NO, NO^+ $
and
$ NO^- $
?
JKCET - 2017
JKCET
Chemistry
Chemical bonding and molecular structure
What will be the
$ pH $
at which precipitation of
$ Zn(OH)_2 $
will take place from a solution containing
$ 0.3 \,M \,Zn^{2+} $
ion?
$ K_{sp} $
of
$ Zn(OH)_2 = 1.2 \times 10^{-12} $
JKCET - 2017
JKCET
Chemistry
Equilibrium
There are four conformational isomers of
$ n $
-butane. Eclipsed, Fully eclipsed, Gauche, Staggered Arrange these isomers of
$ n $
-butane in increasing order of energy.
JKCET - 2017
JKCET
Chemistry
Isomerism in Coordination Compounds
An extrinsic semiconductor with electrons as majority carriers can be obtained by doping
$ Ge $
or
$ Si $
with
JKCET - 2017
JKCET
Physics
Semiconductor electronics: materials, devices and simple circuits
According to the expression
$ \Delta G^{\circ} = -nFE^{\circ} $
, the cell reaction is spontaneous when (Notations and symbols carry their usual meanings)
JKCET - 2017
JKCET
Chemistry
Electrochemistry
Compounds
$ A $
and
$ C $
in the following reaction are
$ CH_3CHO {->[(i) CH_3MgBr][(ii)H_2O]} (A) {->[H_2SO_4, \Delta ]} (B) $
$ {->[{\text{Hydroboration oxidation}}]} (C) $
JKCET - 2017
JKCET
Chemistry
Aldehydes, Ketones and Carboxylic Acids
A common observation seen in
$ Fe_3O_4 $
is that it is ferrimagnetic at room temperature but at
$ 850 \,K $
it becomes
JKCET - 2017
JKCET
Chemistry
The solid state
The difference between the maximum and minimum values of resistance of a resistor with the color scheme green-green-red-silver is
JKCET - 2017
JKCET
Physics
Resistance
Which of the following is the indirect way of generating
$ FM $
?
JKCET - 2017
JKCET
Physics
communication systems
A resistance of
$ 5 \Omega $
is connected in series with a capacitance of
$ 1\,mF $
. The combination is connected to
$ AC $
source of angular frequency
$ 200 \, rad\, s ^{-1} $
. Then
JKCET - 2017
JKCET
Physics
Alternating current
What is the probable free amino acid product formed when
$ R^1CH(NH_2)CONHCHR^2COOH $
reacts with
$ 1 $
-fluoro-
$ 2,4 $
-dinitrobenzene in presence of
$ NaHCO_3 $
followed by acid hydrolysis?
JKCET - 2017
JKCET
Chemistry
Biomolecules
$ Cu $
crystallizes as face centred cubic lattice with edge length of
$ 3.56 \, ? $
. What will be the nearest distance between
$ Cu $
atoms?
JKCET - 2017
JKCET
Chemistry
The solid state
A body
$ A $
thrown vertical upwards with a velocity v reaches a height of
$ 200\, m $
. Another body
$ B $
whose mass is twice that of
$ A $
is thrown with a velocity
$ 2v $
. Find the maximum height reached by
$ B $
.
JKCET - 2017
JKCET
Physics
physical world
Amplitude modulation is the process of
JKCET - 2017
JKCET
Physics
communication systems
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