AkshitPareek2004/jee-question-analyzer-data huggingface dataset:
Subject: Maths
Calculate the mean deviation about
mean for the data given here:
\( \begin{array}{lccc}\text { Class } & \mathbf{5} & \mathbf{1 5} & \mathbf{2 5} & \mathbf{3 5} \\ \text { interval } & & & \end{array} \)
Frequency \( \quad 5 \quad 3 \quad 9 \quad 12 \)
\( \mathbf{A} \cdot 10.2 \)
B. 10.4
c. 10.5
D. 11.4
Subject: Maths
\( \sqrt{1+\left(\frac{d^{2} y}{d x^{2}}\right)^{3}}=\left(2+\frac{d y}{d x}\right)^{1 / 3} \)
Find it's order and degree.
A .2,3
в. 2,9
\( c \cdot 2,6 \)
D. 2,2
Subject: Physics
Two balls of same mass are dropped
from the same height \( h, \) on to the floor
The first ball bounces to a height \( \boldsymbol{h} / \mathbf{4} \) after the collision and the second ball
into a height \( h / 16 . \) The impulse applied by the first and second ball on the floor
are \( I_{1} \) and \( I_{2} \) respectively. Then
A \( \cdot 5 I_{1}=6 I_{2} \)
B \( .6 I_{1}=5 I_{2} \)
\( \mathbf{c} \cdot I_{1}=2 I_{2} \)
D. \( 2 I_{1}=I_{2} \)
Subject: Maths
If in a triangles \( \mathrm{XYZ}, \mathrm{P}, \mathrm{Q} \) are points on XY, YZ respectively such that \( X P=2 P Y \) \( \mathrm{XQ}=2 \mathrm{QZ}, \) then the ratio, area of \( \Delta \boldsymbol{X P Q} \)
\( \operatorname{area~of} \Delta X Y Z, \) is
A .4: 9
B. 2:3
\( c \cdot 3: 2 \)
\( D \cdot 9: 4 \)
Subject: Chemistry
A mixture of ethane and ethene
occupies 40 litre at 1.00 atm and at 400
K.The mixture reacts completely with
\( 130 \mathrm{g} \) of \( \mathrm{O}_{2} \) to produce \( \mathrm{CO}_{2} \) and \( \boldsymbol{H}_{2} \boldsymbol{O} \)
Assuming ideal gas behaviour,
calculate the mole fractions of \( C_{2} H_{6} \)
and \( C_{2} H_{4} \) in the mixture.
Subject: Physics
The potential energy of a particle with displacement \( x \) is \( U(x) . \) The motion is simple harmonic. If k is a positive
constant then
A \( \cdot U=k x \)
B. \( U=k \)
c. \( U=-k x^{2} / 2 \)
\( \mathbf{D} \cdot U=k x^{2} \)
Subject: Maths
If \( \boldsymbol{p}=\cos \boldsymbol{x}-\sin \boldsymbol{x}, \boldsymbol{q}=\frac{1-\sin ^{3} \boldsymbol{x}}{1-\sin \boldsymbol{x}}, \boldsymbol{r}= \)
\( \frac{1+\cos ^{3} x}{1+\cos x} \)
What is the value of \( p+q+r ? \)
\( A \cdot O \)
B.
\( c \cdot 2 \)
D. 3
Subject: Maths
Consider \( \boldsymbol{f}(\boldsymbol{x})= \)
\( \left\{\begin{array}{ll}\boldsymbol{x}[\boldsymbol{x}]^{2} \log _{(1+x)} \boldsymbol{2} & \text { for }-1<\boldsymbol{x}<0 \\ \frac{\ln e^{x^{2}}+2 \sqrt{\{x\}}}{\tan \sqrt{x}} & \text { for } \mathbf{0}<\boldsymbol{x}<1\end{array}\right. \)
where \( \left[^{\star}\right] \&\left\{^{\star}\right\} \) are the greatest integer function \& fractional part function respectively, then -
A. \( f(0)=\ln 2 \Rightarrow f \) is continuous at \( x=0 \)
B. \( f(0)=2 \Rightarrow f \) is continuous at \( x=0 \)
C. \( f(0)=e^{2} \Rightarrow f \) is continuous at \( x=0 \)
D. f has an irremovable discontinuity at \( x=0 \)
Subject: Biology
In the diagram of T.S. of stele of a dicot
root, the different parts have been indicated by alphabets; choose the answer in which these alphabets correctly match with the parts
they indicate.
A. A- Endodermis, B-Conjunctive tissue, C- Metaxylem,
D- Protoxylem, E- Phloem, F- Pith
B. A- Endodermis, B- Pith, C- Protoxylem, D- Metaxylem,
E- Protoxylem, F- conjunctive tissue
C. A-Pericycle, B-Conjunctive tissue, C- Metaxylem, DProtoxylem, E- Phloem
D. A- Endodermis, B- conjunctive tissue, C- Protoxylem,
D- Metaxylem, E- Phloem, F- Pith
Subject: Physics
An electron moves at right angle to a
magnetic field of \( 1.5 \times 10^{-2} T \) with a
speed of \( 6 \times 10^{7} m / s . \) If the specific
charge on the electron is \( 1.7 \times \) \( 10^{11} C / k g, \) the radius of the circular
path will be
A . \( 2.9 \mathrm{cm} \)
B. 3.9 \( \mathrm{cm} \)
c. \( 2.35 \mathrm{cm} \)
D. \( 2 \mathrm{cm} \)
Subject: Chemistry
Which of the following has been arranged in order of increasing bond strength:
A \( \cdot Z n_{2}^{2+}<H g_{2}^{2+}<C d_{2}^{2} \)
B \( \cdot C d_{2}^{2+}<H g_{2}^{2+}<Z n_{2}^{2} \)
c. \( Z n_{2}^{2+}<C d_{2}^{2+}<H g_{2}^{2} \)
D. \( H g_{2}^{2+}<C d_{2}^{2+}<Z n_{2}^{2+} \)
Subject: Physics
A \( H e^{2+} \) ion travels at right angles to a magnetic field of \( 0.80 \mathrm{T} \) with a velocity of \( 10^{5} m / s . \) If \( \mathrm{M} \) is the magnitude of the
magnetic force on the ion, find \( x \) such that \( \boldsymbol{x}=\boldsymbol{M} \times \mathbf{1 0}^{\mathbf{1 6}} \)
Subject: Chemistry
The enthalpy of \( S-S \) bond from the
following data is:
\( (\text { i }) C_{2} H_{5}-S-C_{2} H_{5}(g) ; \Delta_{f} H^{o}= \)
\( -147.2 \mathrm{kJ} / \mathrm{mol} \)
\( (\text { ii }) C_{2} H_{5}-S-S- \)
\( \boldsymbol{C}_{2} \boldsymbol{H}_{5}(\boldsymbol{g}) ; \boldsymbol{\Delta}_{f} \boldsymbol{H}^{o}=-\mathbf{2 0 1 . 9} \mathrm{kJ} / \mathrm{mol} \)
\( (\text { iii }) S(g) ; \Delta_{f} H^{o}=-222.8 \mathrm{kJ} / \mathrm{mol} \)
A. \( 124.5 \mathrm{kJ} / \mathrm{mol} \)
B. 887.5 kJ / mol
c. 967.5 kJ / mol
D. 277.5 kJ / mol
Subject: Physics
Moment of inertia of thin uniform rod of
length \( l \) is equal to:
\( ^{A} \cdot \frac{m l^{2}}{6} \)
в. \( \frac{m l^{2}}{12} \)
c. \( \frac{m l^{2}}{4} \)
D. \( \frac{m l^{2}}{24} \)
Subject: Maths
Two unbiased dice are thrown. The
probability that the sum of the numbers appearing on the top face of two dice is
greater than 7 if 4 appear on the top face of the first dice is...
A \( \cdot \frac{1}{3} \)
B. \( \frac{1}{2} \)
c. \( \frac{1}{12} \)
D.
Subject: Physics
There are two concentric spherical
shells of radii r and 2r. Initially a charge
\( \mathrm{Q} \) is given to the inner shell.Now, switch
\( S_{1} \) is closed and opened then \( S_{2} \) is
closed and opened and the process is
repeated \( n \) times for both the keys
alternatively. Find the final potential
difference between the shells
Subject: Maths
Compute \( \boldsymbol{P}(\boldsymbol{A} \mid \boldsymbol{B}), \) if \( \boldsymbol{P}(\boldsymbol{B})=\mathbf{0 . 5} \) and
\( \boldsymbol{P}(\boldsymbol{A} \cap \boldsymbol{B})=\mathbf{0 . 3 2} \)
Subject: Maths
If the area of the triangle formed by \( (0,0),(a, 0) \) and \( \left(\frac{1}{2}, a\right) \) is equal to \( \frac{1}{2} s q \) unit, then the values of \( a \) are :
\( A \ldots \pm 2 \)
B. ±3
\( c .\pm 1 \)
D. ±4
\( \mathrm{E} \cdot \pm 5 \)
Subject: Maths
Say true or false:
For polynomials \( p(x) \) and any non-zero
polynomial \( g(x), \) there are polynomials \( \boldsymbol{q}(\boldsymbol{x}) \) and \( \boldsymbol{r}(\boldsymbol{x}) \) such that \( \boldsymbol{p}(\boldsymbol{x})= \)
\( \boldsymbol{g}(\boldsymbol{x}) \boldsymbol{q}(\boldsymbol{x})+\boldsymbol{r}(\boldsymbol{x}), \) where \( \boldsymbol{r}(\boldsymbol{x})=\mathbf{0} \) or
\( \operatorname{degree} r(x)<\operatorname{degree} g(x) . \) This
statement is correctly explains the remainder theorem.
A . True
B. False
Subject: Physics
Two south poles each of pole strength 16 A m are placed at corners \( P, R \) of a square PQRS. The pole that should
placed at 'Q' to make S as null point is :
A. South pole of pole strength 32 A m
B. South pole of pole strength \( 32 \sqrt{2} \) A \( m \)
c. North pole of pole strength 32 A m
D. North pole of pole strength \( 32 \sqrt{2} \) A \( m \)
Subject: Chemistry
Arrange the following in the decreasing order of their boiling points.
I.
II.
III.
IV.
\( A \cdot(1)>(11)>(11)>(111) \)
B. (I) > (II) > (III) > (III)
\( c \cdot(\| I)>(1)>(\|)>(I V) \)
D. (IV) > (III) > (II) > (I)
Subject: Maths
If value of \( x \) which satisfy equation \( \sin ^{-1} \frac{2 x}{1+x^{2}}=\tan ^{-1} \frac{2 x}{1-x^{2}}, \) is \( -a< \)
\( \boldsymbol{x}<\boldsymbol{b} \)
Find the value of \( a+b \)
A . -1
B.
c. 1
D.
Subject: Physics
A uniform metre rule of weight \( 10 g f \) is
pivoted at its 0 mark. How can it be
made horizontal by applying a least force?
A. By applying a force \( 10 g f \) downwards at the \( 100 \mathrm{cm} \) mark
c. By applying a force \( 5 g f \) upwards at the 100 cm mark.
D. By applying a force \( 5 g f \) downwards at the 100 cm mark.
Subject: Maths
The blood groups of 36 students of \( 1 x \)
class are recorded as follows.
\( \begin{array}{llll}\boldsymbol{A} & \boldsymbol{O} & \boldsymbol{A} & \boldsymbol{O}\end{array} \) \( \boldsymbol{B} \) \( A \)
В \( o \) \( o \)
\( \Omega \)
Represent the data in the form of a frequency distribution table. Which is the most common and which is the rarest blood group among these
students?
Subject: Physics
In a thermodynamic process, helium gas obeys the law, \( \boldsymbol{T} \boldsymbol{P}^{-2 / 5}= \) constant.
The heat is given to \( n \) moles of \( H e \) in
order to raise the temperature from \( \boldsymbol{T} \) to
\( \mathbf{2} T \) is :
\( A \cdot 8 R T \)
в. \( 4 R T \)
c. \( 16 R T \)
D. Zero
Subject: Physics
In Fig. the angle of inclination of the
inclined plane is \( 30^{0} . \) Find the horizonta
velocity \( V_{0} \) so that the particle hits the
inclined plane perpendicularly.
A \( \cdot V_{0}=\sqrt{\frac{2 g H}{5}} \)
B. \( V_{0}=\sqrt{\frac{2 g H}{7}} \)
\( \mathbf{c} \cdot_{V_{0}}=\sqrt{\frac{g H}{5}} \)
D \( \cdot V_{0}=\sqrt{\frac{g H}{7}} \)
Subject: Physics
If \( C= \) the velocity of light, which of the following is correct?
\( \mathbf{A} \cdot \mu_{0} \varepsilon_{0}=c \)
В. \( \mu_{0} \varepsilon_{0}=c^{2} \)
\( \mathbf{c} \)
D. \( _{\mu_{0} \varepsilon_{0}}=\frac{1}{c^{2}} \)
Subject: Chemistry
Account for the following:
(a) \( N i(C O)_{4} \) is tetrahedral
(b) \( \left[\boldsymbol{N} \boldsymbol{i}(\boldsymbol{C} \boldsymbol{N})_{4}\right]^{2-} \) is square planar
(c) \( \left[N i\left(N H_{3}\right)_{6}\right]^{2+} \) is octahedral
Subject: Chemistry
A resistance of \( 50 \Omega \) is registered when
two electrodes are suspended into a beaker containing a dilute solution of a
strong electrolyte such that exactly half of the them are submerged into solution. If the solution is diluted by
adding pure water (negligible conductivity) so as to just completely submerge the electrodes, the new resistance offered by the solution would
be:
A . \( 50 \Omega \)
B. \( 100 \Omega \)
\( c .25 \Omega \)
D. 200 \( \Omega \)
Subject: Maths
Which statement is true about the
figure formed by joining the midpoints
of the adjacent sides of a rectangle with
\( \operatorname{sides} 8 c m \) and \( 6 c m ? \)
A . It is a rectangle of area \( 24 \mathrm{cm}^{2} \)
B. It is a square of area \( 24 \mathrm{cm}^{2} \)
C. It is a trapezium of area \( 24 \mathrm{cm}^{2} \)
P. It is a rhombus of area \( 24 \mathrm{cm}^{2} \)
Subject: Physics
Two bodies \( \mathrm{M} \) and \( \mathrm{N} \) of equal mass are suspended from two separate massless
spring of force constant \( k_{1} \) and \( k_{2} \)
respectively. If the two bodies oscillate vertically such that their maximum velocities are equal, the ratio of the amplitude of vibration of \( \mathrm{M} \) to that of \( \mathrm{N} \) is?
\( \mathbf{A} \cdot \frac{k_{1}}{k_{2}} \)
В. \( \sqrt{\frac{k_{1}}{k_{2}}} \)
\( \mathbf{c} \cdot \frac{k_{2}}{k_{1}} \)
D. \( \sqrt{\frac{k_{2}}{k_{1}}} \)
Subject: Physics
toppr
Q Type your question
materıdı, then oy onens law, \( \overline{\sin \theta_{2}}= \)
\( \frac{n_{2}}{n}, \) it is understood that the refracted
\( \boldsymbol{n}_{\mathbf{1}} \)
ray bends towards the normal. But it
never emerges on the same side of the
normal as the incident ray. According to
electromagnetism, the refractive index
of the medium is given by the relation, \( \boldsymbol{n}=\left(\frac{\boldsymbol{c}}{\boldsymbol{v}}\right)=\pm \sqrt{\boldsymbol{\epsilon}_{\boldsymbol{r}} \boldsymbol{\mu}_{\boldsymbol{r}}}, \) where \( \boldsymbol{c} \) is the
speed of electromagnetic waves in
vacuum, \( \boldsymbol{v} \) its speed in the medium, \( \boldsymbol{\epsilon}_{\boldsymbol{r}} \)
and \( \mu_{r} \) are the relative permittivity and
permeability of the medium respectively. In normal materials, both
\( \epsilon_{r} \) and \( \mu_{r} \) are positive, implying positive
\( n \) for the medium. When both \( \epsilon_{r} \) and \( \mu_{r} \)
are negative, one must choose the
negative root of \( n . \) Such negative
refractive index materials can now be
artificially prepared and are called
meta-materials. They exhibit significantly different optical behavior, without violating any physical laws.
since \( n \) is negative, it results in a
change in the direction of propagation
of the refracted light. However, similar
to normal materials, the frequency of
light remains unchanged upon
refraction even in meta-materials.
Choose the correct statement.
A. The speed of light in the meta-material is \( v=c|n| \)
B. The speed of light in the meta-material is \( v=\frac{c}{|n|} \)
C. The speed of light in the meta-material is \( v=c \)
D. The wavelength of the light in the meta-material \( \left(\lambda_{m}\right) \) is given by \( \lambda_{m}=\lambda_{a i r}|n| \), where \( \lambda_{\text {air}} \) is the wavelength of
the light in air
Subject: Chemistry
Statement - I : The molecularity of the
reaction \( \boldsymbol{H}_{2}+\boldsymbol{B} \boldsymbol{r}_{2} \rightarrow 2 \mathrm{HBr} \) is 2
Statement - II: The order of this reaction
is \( 3 / 2 \)
A. Both statements are true Statement- - I is correct explanation of Statement- -
B. Both statements are true but statement- -II is not correct explanation of Statement- -
c. Statement-lis true but Statement- -II is false
D. Statement- - lis false but Statement - / l is true
Subject: Maths
Find the domain of the function defined
\( \operatorname{as} f(x)=\frac{x+1}{2 x+3} \)
A \( \cdot x_{\epsilon} \mathrm{R}-\left\{\frac{3}{2}\right\} \)
B. \( _{x \in \mathrm{R}-\left\{\frac{-3}{2}\right\}} \)
\( c . x \epsilon \) R
D. \( _{x \in \mathrm{R}-\left\{\frac{2}{3}\right\}} \)
Subject: Biology
Which one of the following class of phylum mollusca is correctly matched with its general characteristics? Gastropoda - larvae are bilaterally symmetrical; but in adult, the twisting
of viscera makes them lose this
symmetry. some, like land snail and slug (a shell-less form), live on land. Bivalvia - They are sedentary filter feeders.
Cephalopoda - They are at the apex of invertebrate evolution in terms of
learned behaviour they exhibit. The eyes
are image forming, same what similar
to ours.
Pelecypoda - They have sensory tentacles and their foot is reduced into
a tongue - shaped structure which helps them to burrow into sea floor.
Subject: Physics
A steel beam is 5 m long at a
temperature of \( 20^{\circ} \mathrm{C} . \) On a hot day, the
temperature rises to \( 40^{\circ} \mathrm{C} \). What is the
change in the length of the beam due to thermal expansion? Coefficient of linear expansion of stee \( \boldsymbol{\alpha}=\mathbf{1} \cdot \mathbf{2} \times \mathbf{1} \mathbf{0}^{-\mathbf{5}} \boldsymbol{o} \boldsymbol{C}^{-\mathbf{1}} \)
Subject: Physics
The current flowing through resistance
\( R \) if the rod \( M N \) moves toward left and
the rod \( M^{\prime} N^{\prime} \) moves toward the right is
\( A \)
\[
\frac{B l v}{R+(r / 2)}
\]
в. \( \frac{2 B l v}{R+r} \)
c. zero
\( D \)
\[
\frac{3 B l v}{2(R+r)}
\]
Subject: Chemistry
In a measurement of quantum
efficiency of photosynthesis in green plants, it was found that 10 quanta of red light of wavelength \( 6850 A \) were needed to release one molecule of \( \boldsymbol{O}_{2} \)
The average energy storage in this
process is 112 kcal per mol of \( O_{2} \) evolved. What is the energy conversion efficiency in this experiment?
Given: 1 cal \( =4.18 J ; N_{A}=6 \times \)
\( \mathbf{1 0}^{\mathbf{2 3}} ; \boldsymbol{h}=\mathbf{6 . 6 3} \times \mathbf{1 0}^{-\mathbf{3 4}} \boldsymbol{J} . \boldsymbol{s} \)
A . 23.5
B . 26.9
c. 66.34
D. \( 73 . \)
Subject: Physics
An object, moving with a speed of \( 6.25 m s^{-1}, \) is decelerated at a rate given by \( \frac{d v}{d t}=-2.5 \sqrt{v} \) where \( v \) is the instantaneous speed. The time taken by the object, to come to rest, would be
A . \( 1 s \)
B . 2 s
c. \( 4 s \)
D. 8
Subject: Chemistry
\( B C l_{3} \) does not exist as dimer but \( B H_{3} \)
exists as dimer \( \left(B_{2} H_{6}\right) \) because:
A. Chlorine is more electronegative than hydrogen
B. There is \( p_{\pi}-p_{\pi} \) back bonding in \( B C l_{3} \), but \( B H_{3} \) does not contain such multiple bonding
c. Large-sized chlorine atoms do not fit in between the small boron atoms whereas small-sized hydrogen atoms fit between boron atoms
D. None of these
Subject: Chemistry
For the equilibrium, the equilibrium concentration of \( S O_{3} \) will be affected by:
\( \mathbf{2} \boldsymbol{S} \boldsymbol{O}_{2}(\boldsymbol{g})+\boldsymbol{O}_{2}(\boldsymbol{g}) \rightleftharpoons \boldsymbol{2} \boldsymbol{S} \boldsymbol{O}_{3}(\boldsymbol{g}), \boldsymbol{\Delta} \boldsymbol{H}= \)
\( -198 k J \)
This question has multiple correct options
A. doubling the volume of the reaction vessel
B. increasing the temperature at constant volume
c. adding more oxygen to the reaction vessel
D. adding helium to the reaction vessel at constant volume
Subject: Chemistry
Given below are the half-cell reactions:
\( M n^{2+}+2 e^{-} \rightarrow M n ; E^{o}=-1.18 V \)
\( \mathbf{2}\left(\boldsymbol{M} \boldsymbol{n}^{+\mathbf{3}}+\boldsymbol{e}^{-} \rightarrow \boldsymbol{M} \boldsymbol{n}^{2+}\right) ; \boldsymbol{E}^{\boldsymbol{o}}= \)
\( +1.51 V \)
The \( \boldsymbol{E}^{o} \) for \( \boldsymbol{3} \boldsymbol{M} \boldsymbol{n}^{2+} \rightarrow \boldsymbol{M} \boldsymbol{n}+\boldsymbol{2} \boldsymbol{M} \boldsymbol{n}^{3+} \)
will be:
A. \( +0.33 V ; \) the reaction will occur
B. \( -2.69 V \); the reaction will not occur
c. \( +2.69 V ; \) the reaction will occur
D. \( -0.33 V \); the reaction will not occur
Subject: Chemistry
The \( E_{\text {cell}} \) for a given cell is 1.2346 and
\( 1.2340 V \) at \( 300 \mathrm{K} \) and \( 310 \mathrm{K} \)
respectively. Calculate the change in
entropy during the cell reaction if the redox change involves three electrons.
A. \( -17.37 \mathrm{JK}^{-1} \)
B. \( +17.37 J K^{-1} \)
c. \( 173.7 J K^{-1} \)
D. \( 5.79 J K^{-1} \)
Subject: Maths
\( \Delta A M T \sim \Delta A H E . \ln \Delta A M T, A M= \)
\( 6.3 \mathrm{cm}, \angle M A T=120^{\circ}, A T=4.9 \mathrm{cm} \)
and \( \frac{M A}{H A}=\frac{7}{5} . \) Construct both the
triangles.
Subject: Maths
If \( f(x)=\frac{x^{3}}{3}-\frac{5 x^{2}}{2}+6 x+7 \) increas
in the interval \( T \) and decreases in the
interval \( S \), then which one of the
following is correct?
A \( . T=(-\infty, 2) \cup(3 \infty) \) and \( S=(2,3) \)
в. \( T=\Phi \) and \( S=(-\infty, \infty) \)
c. \( T=(-\infty, \infty) \) and \( S=\Phi \)
D. \( T=(2,3) \) and \( S=(-\infty, 2) \cup(3, \infty) \)
Subject: Physics
connected across a \( 4 m \) long uniform
wire having resistance \( 4 \Omega / m . \) The cells
of small emfs \( \epsilon_{1}=2 V \) and \( \epsilon_{2}=4 V \)
having internal resistance \( 2 \Omega \) and \( 6 \Omega \)
respectively, are connected as shown in
the figure. If galvanometer shows no
deflection at the point \( N, \) the distance
of point \( N \) from the point \( A \) is equal to
\( A \cdot \underline{1}_{-} \)
\( B \cdot 1 \)
\( -n \)
c. \( 25 \mathrm{cm} \)
D. 50
Subject: Chemistry
Assertion
Pure water obtained from different
states of India always contains
hydrogen and oxygen in the ratio of 1: 8
by mass.
Reason
Total mass of reactants and products
during chemical change is always the
same.
A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
C. Assertion is correct but Reason is incorrect
D. Assertion is incorrect but Reason is correct
Subject: Physics
Assertion
In the human body the heart acts as the
pump that circulates blood through different parts of the body, transferring
heat by forced convection.
Reason
In forced convection,material is forced
to move by a pump or by some other
physical means.
A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
C. Assertion is correct but Reason is incorrect
D. Both Assertion and Reason are incorrect
Subject: Chemistry
Assertion \( P h N_{2} B r^{\ominus} \) is more acidic than
\( N H_{4} B r \)
Reason
\( P h N H_{3} \) (anilinium ion) is resonance
stabilised.
A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
c. Assertion is correct but Reason is incorrect
D. Both Assertion and Reason are incorrect
Subject: Physics
A soap bubble, having radius of \( 1 \mathrm{mm} \), is blown from a detergent solution having
a surface tension of \( 2.5 \times 10^{-2} N / m \)
The pressure inside the bubble equals at a point \( Z_{0} \) below the free surface of
water in a container. Taking \( \boldsymbol{g}= \)
\( 10 m / s^{2}, \) density of water \( =10^{3} k g / m^{3} \)
the value of \( Z_{0} \) is :
A . \( 100 \mathrm{cm} \)
B. \( 10 \mathrm{cm} \)
\( c \cdot 1 c m \)
D. \( 0.5 \mathrm{cm} \)
Subject: Maths
Write a rational function \( f \) that has
vertical asymptote at \( x=4, \) a
horizontal asymptote at \( y=5 \) and \( a \)
zero at \( x=-7 \)
A \( \quad f(x)=\frac{5(x-7)}{(x-4)} \)
B. \( f(x)=\frac{5(x+7)}{(x-4)} \)
c. \( f(x)=\frac{5(x-7)}{(x+4)} \)
D. \( f(x)=\frac{(x+7)}{(x+4)} \)
Subject: Chemistry
Two liquids \( X \) and \( Y \) form an ideal
solution at \( 300 K \), the vapour pressure
of the solution containing 1 mole of \( X \)
and 3 moles of \( Y \) is 550 mm Hg. At the
same temperature, if 1 mole of \( Y \) is further added to this solution, the
vapour pressure of the solution
increases by 10 mm \( H g . \) Vapour
pressure (in \( \mathrm{mm} \) Hg ) of \( \boldsymbol{X} \) and \( \boldsymbol{Y} \) in
their pure states will be respectively:
A . 200 and 300
B. 300 and 400
c. 400 and 600
D. 500 and 600
Subject: Chemistry
An electric current is passed through
silver voltameter connected to a water
voltameter. The cathode of the silver
voltameter weighed \( 0.108 g \) more at the end of the electrolysis. The volume of oxygen evolved at STP is:
\( \mathbf{A} \cdot 56 \mathrm{cm}^{3} \)
В. \( 550 \mathrm{cm}^{3} \)
\( c \cdot 5.6 \mathrm{cm}^{3} \)
D. \( 11.2 \mathrm{cm}^{3} \)
E . \( 22.4 \mathrm{cm}^{3} \)
Subject: Chemistry
The standard reduction potential at \( 25^{\circ} \)
\( \mathrm{C} \) for the reduction of water
\( 2 H_{2} O+2 e^{-} \rightleftharpoons H_{2}+2 O H^{-} \) is -0.8277
volt. Calculate the equlibrium constant for the reaction \( 2 H_{2} O \rightleftharpoons H_{3} O^{+}+ \)
\( O H^{-} \) at \( 25^{0} C \)
Subject: Physics
A bird flies with a speed of \( 10 \mathrm{km} / \mathrm{h} \)
and a car moves with a uniform speed
of \( 8 k m / h . \) Both start from \( B \) toward \( \boldsymbol{A}(\boldsymbol{B} \boldsymbol{A}=\mathbf{4 0} \boldsymbol{k} \boldsymbol{m}) \) at the same instant.
The bird having reached \( A \), flies back immediately to meet the approaching car. As soon as it reaches the car, it flies
back to \( A \). The bird repeats this till both
the car and the bird reach \( \boldsymbol{A} \)
simultaneously. Find the total distance flown by the bird.
Subject: Chemistry
1 g-atom of nitrogen represents:
A \( \cdot 6.02 \times 10^{23} \mathrm{N}_{2} \) molecules
B . \( 22.4 L \) of \( N_{2} \) at \( S . T . P \)
c. \( 11.2 L \) and \( N_{2} \) at \( S . T . P . \)
D. \( 28 g \) of nitrogen
Subject: Physics
A \( 4 \mathrm{m} \) long ladder weighing 25 kg rests with upper end against a smooth wall and lower end of rough ground. What should be the minimum coefficient of
friction between the ground and the ladder for it to be inclined at 60 with the
horizontal without slipping? (Take \( g=10 \)
\( \left.m s^{-2}\right) \)
A . 0.19
B. 0.29
\( c \cdot 0.39 \)
D. 0.49
Subject: Chemistry
Formation of \( N i(C O)_{4} \) and subsequently its decomposition into Ni and \( \mathrm{CO} \) (recycled) make the basis of Mond's process:
\( \mathbf{N i}+ \)
\( \mathbf{4} \boldsymbol{C O} \quad \boldsymbol{T}_{1} \quad \boldsymbol{N i}(\boldsymbol{C O})_{4} \quad \underline{\boldsymbol{T}}_{2} \quad \boldsymbol{N} \boldsymbol{i}+ \)
\( 4 C O \)
\( T_{1} \) and \( T_{2} \) are :
A \( \cdot 100^{\circ} \mathrm{C}, 50^{\circ} \mathrm{C} \)
B . \( 50^{\circ} \mathrm{C}, 100^{\circ} \mathrm{C} \)
c. \( 50^{\circ} \mathrm{C}, 230^{\circ} \mathrm{C} \)
D \( \cdot 230^{\circ} \mathrm{C}, 50^{\circ} \mathrm{C} \)