AkshitPareek2004/jee-question-analyzer-data huggingface dataset:
Subject: Chemistry
Assertion
In acidic medium, \( Z n^{2+} \) is not
precipitated by \( S^{2-} \) ions.
Reason
Common ion effect reduces the
concentration of \( S^{2-} \) ions to the
minimum level.
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
In which direction from Saptarshi (or Ursa Major,or Great bear) shown in the figure do we search for the pole star?
\[
\begin{array}{c}
\delta \\
\star \\
\dot{\gamma}
\end{array}
\]
SAPTARSHI
\( \mathbf{A} \cdot \alpha \) to \( \beta \)
B. \( \gamma \) to \( \delta \)
\( c \cdot \beta \) to \( \alpha \)
\( \mathbf{D} \cdot \delta \) to \( \gamma \)
Subject: Physics
The number of turns in the coil of an \( A C \)
generator ar e100 and its cross-
sectional area is \( 2.5 m^{2} . \) The coil is
revolving in a uniform magnetic field of strength \( 0.3 T \) with the uniform angular velocity of 60 rad/s. The value of maximum value produced is \( \mathbf{k V} \)
A . 1.25
в. 4.50
c. 6.75
D. 2.25
Subject: Maths
\( \int \frac{2 x+3}{\sqrt{4 x+3}} d x= \)
A \( \cdot \frac{1}{12}(4 x-3)^{\frac{3}{2}}+\frac{1}{4} \sqrt{4 x+3}+c \)
B \( \frac{1}{12}(4 x+3)^{\frac{3}{2}}+\frac{3}{4} \sqrt{4 x+3}+c \)
C \( \frac{1}{12}(4 x+3)^{\frac{3}{2}}-\frac{3}{4} \sqrt{4 x-3}+c \)
D \( \quad \frac{1}{12}(4 x+3)^{\frac{3}{2}}-\frac{1}{4} \sqrt{4 x-3}+c \)
Subject: Maths
The Indian Navy flight fly in a formation
that can be viewed as two triangles with
common side. Prove that \( \triangle \boldsymbol{S} \boldsymbol{R} \boldsymbol{T} \cong \)
\( \triangle Q R T, \) if \( T \) is the midpoint of \( S Q \) and
\( \boldsymbol{S} \boldsymbol{R}=\boldsymbol{R} \boldsymbol{Q} \)
Subject: Physics
A metallic rod of length \( l \) is hinged at
the point \( M \) and is rotating about an axis perpendicular to the plane of paper
with a constant angular velocity \( \omega . A \) uniform magnetic field of intensity \( B \) is acting in the region (as shown in the figure) parallel to the plane of paper. The potential difference between the
points \( \boldsymbol{M} \) and \( \boldsymbol{N} \)
A. is always zero
B. varies between \( \frac{1}{2} B \omega l^{2} \) to 0
\( ^{\mathbf{C}} \cdot_{\text {is always }} \frac{1}{2} B \omega l^{2} \)
D. is always \( B \omega l^{2} \)
Subject: Physics
A ladder \( A B \) is supported by a smooth
vertical wall and rough horizontal floor
as shown. A boy starts moving from \( A \) to
\( B \) slowly. The ladder remains at rest, then pick the correct statement(s) from
the following:
This question has multiple correct options
A. Magnitude of normal reaction by wall on ladder at point B will increase
B. Magnitude of normal reaction by wall on ladder at point B will decrease
c. Magnitude of normal reaction by floor on ladder at point A will remain unchanged
D. Magnitude of friction force by floor on ladder at point A will increase
Subject: Physics
Assertion
In circular motion work done by all the
forces acting on the body is zero.
Reason

Centripetal force and velocity are
mutually perpendicular.
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: Maths
Assertion
STATEMENT-1: The minimum value of
the intercepts cut on tangent by a tangent to the ellipse \( \frac{x^{2}}{a^{2}}+\frac{y^{2}}{b^{2}}=1 \)
between the coordinate axes is \( a+b \)
Reason

STATEMENT-2: For each pair of two negative real numbers a and b, nequality \( \frac{\boldsymbol{a}+\boldsymbol{b}}{\mathbf{2}} \geq-\sqrt{\boldsymbol{a} \boldsymbol{b}} \) holds.
A. Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-
B. Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-
c. Statement- - is True, Statement-2 is False
D. Statement-1 is False, Statement-2 is True
Subject: Chemistry
Three elements \( X, Y \) and \( Z \) form a Dobereiner triad. The ratio of the atomic
weight of \( X \) to that of \( Z \) is 7: 25
If the sum of the atomic weights of \( x \) and \( Z \) is 160 , find the atomic weights of \( X, Y \) and \( Z \)
A \( . x \rightarrow 35, Y \rightarrow 80, Z \rightarrow 125 \)
в. \( x \rightarrow 125, Y \rightarrow 80, z \rightarrow 35 \)
c. \( x \rightarrow 80, Y \rightarrow 35, Z \rightarrow 125 \)
D. \( x \rightarrow 80, Y \rightarrow 125, z \rightarrow 35 \)
Subject: Chemistry
Which of the following is true regarding
an \( N e \) atom with a mass number of 20
and an \( O^{2-} \) ion with a mass number of
\( 16 ? \)
A. They contain the same number of protons.
B. They contain the same number of neutrons.
C. They contain the same number of protons plus neutrons.
D. They are isoelectronic.
Subject: Physics
What is a pressure on the smaller
piston if both the pistons are at same
horizontal level? (Take \( \left.g=10 m s^{-2}\right) \)
\( \mathbf{A} \cdot 3 P a \)
В. \( 4 \times 10^{3} P a \)
c. \( 6 \times 10^{5} P a \)
D. \( 1000 P a \)
Subject: Physics
A lead-acid battery of a car has an e.m.f. of \( 12 V . \) if the internal resistance of the
battery is 0.5 ohm, the maximum
current that can be drawn from the
battery will be
\( A .30 A \)
в. \( 20 A \)
\( c \cdot 6 A \)
D. \( 24 A \)
Subject: Physics
The order of coloured rings in a carbon resistor is red, yellow, blue and silver The resistance of the carbon resistor is :
A \( \cdot 24 \times 10^{6} \Omega \pm 5 \% \)
B . \( 24 \times 10^{6} \Omega \pm 10 \% \)
c. \( 34 \times 10^{4} \Omega \pm 10 \% \)
D . \( 26 \times 10^{4} \Omega \pm 5 \% \)
Subject: Chemistry
Be and Al show diagonal relationship
and thus:
This question has multiple correct options
A. their oxides are soluble in alkali solution forming \( \left[\operatorname{Be}(O H)_{4}\right]^{3-} \)
B. they form complex anion \( B e F_{4}^{2-} \) and \( A l F_{6}^{3-} \)
C \( \cdot B e C l_{2} \) and \( A l C l_{3} \) are Lewis acid
D. oxides are basic
Subject: Chemistry
Halides of alkaline earth metals from
hydrates such as, \( M g C l_{2} \cdot 6 H_{2} O, C a C l_{2} \)
\( 6 H_{2} O, B a C l_{2} \cdot 2 H_{2} O, \) and \( S r C l_{2} \)
\( 2 H_{2} O \)
This shows that halides of group II elements:
A. are hygroscopic in nature
B. act as dehydrating agents.
c. can absorbs moisture from air
D. cannot absorbs moisture from air
Subject: Chemistry
\( N a H C O_{3}+C H_{3} C O O H \longrightarrow \)
\( C H_{3} C O O N a+C O_{2}+H_{2} O \)
This reaction is used as a test of
carboxylic acid because :
A. gas is confirmed when it turns lime water black
B. gas is confirmed when it turns lime water milky
c. gas is confirmed when it turns lime water light green
D. gas is confirmed when it turns lime water brown
Subject: Chemistry
Statement 1: Oxidation and reduction
occur together Statement 2: In redox reactions,
electrons must be gained and lost.
A. Both Statement 1 and Statement 2 are correct and Statement 2 is the correct explanation of Statement 1
B. Both Statement 1 and Statement 2 are correct and Statement 2 is not the correct explanation of Statement 1.
c. statement 1 is correct but statement 2 is not correct
D. Statement 1 is not correct but Statement 2 is correct
E. Both the Statement 1 and Statement 2 are not correct
Subject: Chemistry
The three thermodynamic states \( P, Q \)
and \( R \) of a system are connected by the paths shown in the figure given on the right. The entropy change in the processes \( \boldsymbol{P} \rightarrow \boldsymbol{Q}, \boldsymbol{Q} \rightarrow \boldsymbol{R} \) and \( \boldsymbol{P} \rightarrow \boldsymbol{R} \)
along the paths indicated are
\( \triangle S_{P Q}, \triangle S_{Q R} \) and \( \triangle S_{P R} \) respectively. If the process \( P \rightarrow Q \) is adiabatic and
irreversible, while \( P \rightarrow R \) is adiabatic
and reversible, the correct statement is:
A. \( \triangle S_{Q R}>0 \)
В. \( \Delta S_{P R}>0 \)
c. \( \triangle S_{Q R}<0 \)
D. \( \triangle S_{P Q}>0 \)
Subject: Maths
If \( \boldsymbol{f}: \boldsymbol{A} \rightarrow \boldsymbol{A}, \) then range of \( \boldsymbol{f} \) where
\( \boldsymbol{A}=\{1,2,3,4\} \) and \( \boldsymbol{f}(\boldsymbol{x})=\boldsymbol{x}^{2}+\boldsymbol{x}+\boldsymbol{2} \)
Subject: Maths
A cylindrical container of radius \( 6 \mathrm{cm} \)
and height \( 15 \mathrm{cm} \) is filled with ice
cream. The whole ice cream has to be
distributed to 10 children in equal
cones with hemispherical tops. If the height of the conical portion is four times the radius of its base, find the
radius of the ice-cream cone.
Subject: Maths
Three cards are drawn from a bag
containing \( \mathrm{m} \) cards marked \( 1,2,3 \ldots . . n \) The probability that they form a
sequence is
A \( \cdot \frac{6}{n(n-1)} \)
B. \( \frac{3}{n(n-3)} \)
c. \( \frac{12}{n(n-2)} \)
D. \( \frac{3}{n(n-1)} \)
Subject: Physics
A bar magnet is \( 10 \mathrm{cm} \) long is kept with its north (N)-pole pointing north. A neutral point is formed at a distance of \( 15 \mathrm{cm} \) from each pole:Given the horizontal component of earth's field is 0.4 Gauss, the pole strength of the magnet is
\( A \cdot 9 A-m \)
B. 6.75 A-m
c. 27 A-m
D. 1.35 A-m
Subject: Maths
If \( 9.2 \mathrm{cm} \) is the diameter of the circle,
then its radius is
A \( .4 .1 \mathrm{cm} \)
B. \( 4.6 \mathrm{cm} \)
c. \( 4.8 \mathrm{cm} \)
D. \( 4.3 \mathrm{cm} \)
Subject: Biology
For how long and at what temperature an experiment is run to determine the value of \( B O D \) of a water body?
A \( \cdot 10^{\circ} \mathrm{C} \) for 10 days
B. \( 20^{\circ} \mathrm{C} \) for 5 days
c. \( 20^{\circ} \mathrm{C} \) for 2 days
D. \( 5^{\circ} \mathrm{C} \) for 20 days
Subject: Maths
A tent is of the shape of a right circular
cylinder upto height of 3 metres and then becomes a right circular cone with
maximum height of 13.5 metres above the ground. Calculate the cost of
painting the inner side of the tent at the
rate of Rs.2 per square metre, if the
radius of the base is 14 metres.
A . Rs. 2068
B. Rss.1988
c. Rs. 1268
D. Rs 2248
Subject: Physics
If the pressure of a gas contained in a closed vessel increases by \( \times \% \) when heated by \( 1^{0} C \), its initial temperature is
A \( \cdot \frac{100}{x} \) Kelvin
B. \( \frac{100}{x} \) Celsius
C. \( \frac{x+100}{x} \) Kelvin
D. \( \frac{100-x}{x} \) Celsius
Subject: Physics
Two circular conducting loops of radii
\( R_{1} \) and \( R_{2} \) are laying concentrically in
the same plane. If \( \boldsymbol{R}_{1}>\boldsymbol{R}_{2} \) then the
mutual inductance (M) between them
will be proportional to:
A \( \cdot \frac{R_{1}}{R_{2}} \)
в. \( \frac{R_{2}}{R_{1}} \)
c. \( \frac{R_{1}}{R_{2}^{2}} \)
D. \( \frac{R_{2}^{2}}{R_{1}} \)
Subject: Maths
\( \int \cos ^{-1}\left(\frac{1}{x}\right) d x \) equal to
A \( \cdot x \sec ^{-1} x+\cosh ^{-1} x+c \)
B \( \cdot x \sec ^{-1} x-\cosh ^{-1} x+c \)
c. \( x \sec ^{-1} x-\sin ^{-1} x+c \)
D. \( x \sec ^{-1} x+\sin ^{-1} x+c \)
Subject: Physics
The force required to double the length of a steel wire of area of cross-section
\( 5 \times 10^{-5} m^{2}(\text { in } N) \) is :
\( \left(Y=20 \times 10^{10} P a\right) \)
A . \( 10^{7} \)
B . \( 10^{6} \)
\( \mathrm{c} \cdot 10^{-7} \)
D. \( 10^{5} \)
Subject: Chemistry
Standard electrode potentials of
\( \boldsymbol{F} \boldsymbol{e}^{2+}+\boldsymbol{2} \boldsymbol{e}^{-} \rightarrow \boldsymbol{F} \boldsymbol{e} \) and \( \boldsymbol{F} \boldsymbol{e}^{\boldsymbol{3}+}+\boldsymbol{3} \boldsymbol{e}^{-} \rightarrow \)
\( F e \) are \( -0.440 V \) and \( -0.036 V \)
respectively. The standard electrode potential \( \left(\boldsymbol{E}^{o}\right) \) for \( \boldsymbol{F} \boldsymbol{e}^{\mathbf{3}+}+\boldsymbol{e}^{-} \rightarrow \boldsymbol{F} \boldsymbol{e}^{2+} \)
is:
\( \mathbf{A} \cdot-0.476 V \)
В. \( -0.404 V \)
c. \( +0.404 V \)
D. \( +0.772 V \)
Subject: Physics
Young's modulis of brass and steel are
\( \mathbf{1 0} \times \mathbf{1 0}^{\mathbf{1 0}} \mathbf{N} / \boldsymbol{m} \) and \( \mathbf{2} \times \mathbf{1 0}^{\mathbf{1 1}} \mathbf{N} / \boldsymbol{m}^{\mathbf{2}} \)
respectively. A brass wire and a steel wire of the same length are extended by
1 mm under the same force. The radii of
the brass and steel wires are \( \boldsymbol{R}_{\boldsymbol{B}} \) \$and
\( \mathrm{R}_{-}\{\mathrm{S}\} \$ \$, \) respectively. Then
A. \( R_{S}=\sqrt{2} R_{B} \)
в. \( R_{S}=\frac{R_{B}}{\sqrt{2}} \)
c. \( R_{s}=4 R_{B} \)
D. \( R_{S}=\frac{R_{B}}{4} \)
Subject: Physics
The ratio of momentum of an electron
and an alpha particle which are accelerated from rest by potential difference of \( 100 \mathrm{V} \) is:
A \( \cdot \sqrt{\frac{m_{\alpha}}{m_{e}}} \)
В. \( \sqrt{\frac{m_{e}}{m_{\alpha}}} \)
c. \( \frac{2 m_{e}}{m_{\alpha}} \)
D. \( \sqrt{\frac{m_{e}}{2 m_{\alpha}}} \)
Subject: Chemistry
The formal potential of \( \boldsymbol{F e}^{3+} / \boldsymbol{F e}^{2+} \) in a sulphuric acid and phosphoric acid
mixture \( \left(\boldsymbol{E}^{o}=+\mathbf{0 . 6 1} \boldsymbol{V}\right) \) is much lower
than the standard potential
\( \left(\boldsymbol{E}^{o}=+\mathbf{0 . 7 7} \boldsymbol{V}\right) . \) This is due to:
This question has multiple correct options
A \( \cdot \) formation of the species \( \left[F e H P O_{4}\right]^{+} \)
B. lowering of potential upon complexation
C . formation of the species \( \left[\mathrm{FeSO}_{4}\right]^{-} \)
D. high acidity of the medium
Subject: Physics
An alpha nucleus of energy \( \frac{1}{2} m v^{2} \) is bombarded onto a heavy nuclear target of charge \( Z e . \) Then the distance of
closest approach for the alpha nucleus will be proportional to
\( \mathbf{A} \cdot v^{2} \)
в. \( 1 / m \)
c. \( 1 / v^{4} \)
D. \( 1 / Z \)
Subject: Physics
A solenoid of length \( 0.4 m \) and having
500 turns of wire carries a current of
3 amp. Calculate the torque required to hold a coil (having radius \( 0.02 \mathrm{cm} \)
current \( 2 A \) and turns 50 ) in the middle
of the solenoid with its axis
perpendicular to the axis of the
solenoid. \( \left(\pi^{2}=10\right) \)
Subject: Physics
A particle hanging from a massless
spring stretches it by \( 2 c m \) at the eath's surface. How much will the same
particle stretch the spring at a height of \( 2624 K m \) from the surface of the earth?
(Radius of the earth \( =6400 K m) \)
\( A \cdot 1 c m \)
B. \( 2 c m \)
\( c .3 c m \)
D. \( 4 c m \)
Subject: Maths
Events \( \boldsymbol{A} \) and \( \boldsymbol{B} \) are such that \( \boldsymbol{P}(\boldsymbol{A})= \) \( \frac{1}{2}, P(B)=\frac{7}{12} \) and
\( P(\text { not } A \text { or } \operatorname{not} B)=\frac{1}{4} . \) State whether
\( A \) and \( B \) are independent?
A. True
B. False
Subject: Maths
If \( \boldsymbol{f}(\boldsymbol{x}+\boldsymbol{y}+\boldsymbol{z})=\boldsymbol{f}(\boldsymbol{x}) \cdot \boldsymbol{f}(\boldsymbol{y}) \cdot \boldsymbol{f}(\boldsymbol{z}) \) for all
\( \boldsymbol{x}, \boldsymbol{y}, \boldsymbol{z} \) and \( \boldsymbol{f}(\boldsymbol{2})=\boldsymbol{4}, \boldsymbol{f}^{\prime}(\boldsymbol{0})=\boldsymbol{3}, \) then
\( f^{\prime}(2) \) equals
A . 12
B. 9
c. 16
D. 6
Subject: Maths
Two coins are available, one fair and the
other two-headed. Choose a coin and
toss it once; assume that the unbiased coin is chosen with probability \( \frac{3}{4} . \) Given that the outcome is head the probability that the two-headed coin was chosen, is
A.
в. \( \frac{2}{5} \)
\( c \cdot \frac{1}{5} \)
D.
Subject: Physics
An object moves with constant acceleration. Which of the following
expression is also constant.
A \( \cdot \frac{d|\vec{v}|}{d t} \)
B. \( \mid \frac{d \vec{v}}{d t} \)
c. \( \frac{d\left(v^{2}\right)}{d t} \)
\( \frac{d\left(\frac{\vec{v}}{\sqrt{\mid 1}}\right)}{d t} \)
Subject: Maths
Let \( \vec{a} \) and \( \vec{b} \) be two unit vectors if the vectors \( \vec{c}=\vec{a}+2 \vec{b} \) and \( \vec{d}=2 \vec{a}- \)
\( 4 \vec{b} \) are perpendicular to each other Then the angle between \( \vec{a} \) and \( \vec{b} \) is:
A \( \cdot \frac{\pi}{6} \)
в. \( \frac{\pi}{2} \)
\( c \cdot \frac{\pi}{3} \)
D.
Subject: Biology
Select the option having correct
matching for different parts of male reproductive system of cockroach.
A . A-Phallic gland, B-Seminal vesicle, C-Vas deferens, DEjaculatory duct
B. A-Phallic gland, B-Seminal vesicle, C-Ejaculatory duct D-vas deferens
c. A-seminal vesicle, B-Phallic gland, C-Vas deferens, DEjaculatory duct
D. A-Phallic gland, B-Vas deferens, C-Seminal vesicle, DEjaculatory duct
Subject: Maths
The arithmetic mean the data
\( 0,1,2,, \dots, n \) with frequencies
\( 1,^{n} C_{1},^{n} C_{2}, \dots^{n} C_{n} \) is
\( A \)
в. \( \frac{2^{n}}{n} \)
c. \( n+1 \)
D.
Subject: Chemistry
Assertion
Helium has the highest value of ionisation energy among all the elements known.
Reason
Helium has the highest value of electron affinity among all the elements
known.
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: Maths
If \( A \) 's salary is \( 30 \% \) more than that of \( B \)
then how much percent is \( B \) 's salary less than that of \( A^{\prime} \) s?
A . \( 30 \% \)
B . 25\%
c. \( _{23} \frac{1}{3} \% \)
D. \( 33 \frac{1}{3} \% \)
Subject: Maths
Find the domain of the function \( f \)
defined by \( f(x)=s q r t\left(x^{2}+1\right)+2 \)
where sqrt is the square root
A \( . R-\{2\} \)
в. \( R \)
\( c \cdot 2 \)
D. \( R-\{1\} \)
Subject: Physics
toppr Loain Jolv Now
Q Type your question107 and a. which must
be invested
in reaction
to get it
started
a state in
which the
rate of
forward
baction is
exactly
equal to the
rate of the
reverse
reaction. a process
c.
or reaction
which
consumes
heat
a process
or reaction
that
releases
heat.
t. A
\( A \)
\( (a \rightarrow t) \)
\( (b \rightarrow q) \)
\( (c \rightarrow s) \)
\( (d \rightarrow r) \)
в. \( (a \rightarrow q) \)
\( (b \rightarrow p) \)
\( (c \rightarrow r) \)
\( (d \rightarrow s) \)
\( \mathbf{c} \cdot(a \rightarrow t) \)
\( (b \rightarrow p) \)
\( (c \rightarrow s) \)
\( (d \rightarrow r) \)
D. \( (a \rightarrow s) \)
\( (b \rightarrow r) \)
\( (c \rightarrow q) \)
\( (d \rightarrow p) \)
Subject: Physics
The relation between velocity of sound in gas \( (v) \) and \( r . m . s \) velocity of
molecules of gas \( v_{r . m . s} \) is
A \( \cdot v=v_{r, m \cdot s}(\gamma / 3)^{1 / 2} \)
B . \( v_{r . m . s}=v(2 / 3)^{1 / 2} \)
\( \mathbf{c} \cdot v=v_{r . m . s} \)
D . \( v=v_{r . m . s}(3 / \gamma)^{1 / 2} \)
Subject: Physics
The Kirchhoff's first \( \operatorname{law}\left(\sum i=0\right) \) and second law \( \left(\sum i R=\sum E\right), \) where the symbols have their usual meanings, are respectively based on
A. conservation of charge, conservation of energy
B. Conservation of charge, conservation of momentum
c. conservation of energy, conservation of charge
D. conservation of momentum, conservation of charge
Subject: Chemistry
A radioactive isotope \( \boldsymbol{X} \) with half life of \( 1.37 \times 10^{9} \) years decays to \( Y, \) which is
stable. A sample of rock from moon was found to contain both the elements \( \boldsymbol{X} \)
and \( Y \) in the ratio \( 1: 7 . \) What is the age
of the rock?
Subject: Chemistry
\( 298 \mathrm{K} \) is approximately what temperature in degrees Celsius?
A \( \cdot 25^{\circ} \mathrm{C} \)
B \( \cdot 24^{\circ} C \)
\( \mathbf{c} \cdot 29^{\circ} C \)
D. \( 27^{\circ} \mathrm{C} \)
Subject: Physics
An isolated hollow metal sphere is electrically neutral (no excess charge)
and supported on an insulating stand. A small amount of negative charge is suddenly placed at one point \( P \) on this
metal sphere. If we check on this excess negative charge a few seconds later we will find one of the following
possibilities:
A. All of the excess charge remains right around P.
B. The excess charge has distributed it self evenly over the outside surface of the sphere.
C. The excess charge is evenly distributed over the inside and outside surface
D. Most of the charge is still at point \( P \), but some will have spread over the sphere.
Subject: Maths
Given a reactangular ground is \( 90 m \) long and \( 32 m \) broad. In the middle of the
ground there is a circular thank of
radius 14 metres. Find the cost of
turfing the remaining portion at the
rate of \( R s .2 .50 \) per square meter.
A. \( R s .5660 \)
в. \( R s .4295 \)
c. \( R s .552 \)
D. \( R s .6250 \)
Subject: Chemistry
Assertion
Zone refining method is used to produce pure metals which are used as
semiconductors.
Reason
Semiconductors are used in highly pure
form.
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
Which of the following is a redox
reaction?
\( \mathbf{A} \cdot H_{2} S O_{4} \) with \( N a O H \)
B. In atmosphere, \( O_{3} \) from \( O_{2} \) by lightning
C. Nitrogen oxides form nitrogen and oxygen by lightning
D. Evaporation of \( H_{2} O \)
Subject: Physics
In the diagram shown, a light ray is incident on the lower medium boundary
at an angle if \( 45^{\circ} \) with the normal.
Which of the following statements is
are true?
'his question has multiple correct options
A \( \cdot \) If \( \mu_{2} / \sqrt{2} \), then angle of deviation is 45
B. If \( \mu_{2} / \sqrt{2} \), then angle of deviation is \( 90^{\circ} \)
\( \mathrm{C} \cdot \) If \( \mu_{2} / \sqrt{2}, \) then angle of deviation is \( 135^{\circ} \)
D. If \( \mu_{2} / \sqrt{2} \), then angle of deviation is 0
Subject: Physics
If \( Q_{1} \) and \( Q_{2} \) are the energies released in the fusion of hydrogen in Carbon nitrogen cycle and proton - proton cycle respectively, then
A \( \cdot Q_{1}>Q_{2} \)
в. \( Q_{1}=Q_{2} \)
c. \( Q_{1}<Q_{2} \)
D. \( Q_{1}=2 Q_{2} \)
Subject: Chemistry
Assertion
\( \mathbf{C}-\mathbf{C} \) bond length in zeise's salt is same
as ethylene.
Reason
Double bond is Ionger as compare to
single bond.
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 metallic sphere of mass M falls through glycerine with a terminal velocity v. If we drop a ball of mass \( 8 \mathrm{M} \) of same metal into a column of
glycerine, the terminal velocity of the ball will be
A \( .2 v \)
B. \( 4 v \)
\( c \cdot 8 v \)
D. \( 16 v \)
Subject: Chemistry
Which of the following compounds will
\( \operatorname{give} S_{N} 1 \) and \( S_{N} 2 \) reactions with
considerable rate?
।. \( \boldsymbol{C}_{\boldsymbol{6}} \boldsymbol{H}_{\boldsymbol{5}}-\boldsymbol{C} \boldsymbol{H}_{\boldsymbol{2}}-\boldsymbol{B} \boldsymbol{r} \)
II. \( \boldsymbol{C H}_{2}=\boldsymbol{C H}-\boldsymbol{C H}_{2}-\boldsymbol{B r} \)
III. \( \boldsymbol{C H}_{3}-\boldsymbol{C H}(\boldsymbol{B r}) \boldsymbol{C H}_{3} \)
Select the correct answer from the
codes below below.
A. \( I, \) II and II
в. \( I, \) II and \( I V \)
c. \( I I, \) III and \( I V \)
D. I, III and IV
Subject: Physics
A stone is dropped from a height of 1.25
\( \mathrm{m} . \) If \( \mathrm{g}=10 \mathrm{m} \mathrm{s}^{-2}, \) what is the ratio of the
distances traveled by it during the first and the last second of its motion?
A. cant say
B. 1: 9
\( c \cdot 1: 8 \)
\( D \cdot 2: 9 \)
Subject: Chemistry
Among \( L i C l, B e C l_{2}, B C l_{3} \) and \( C C l_{4} \)
the covalent charecter varies as:
A \( \cdot \operatorname{Li} C l<B e C l_{2}>B C l_{3}>C C l \)
в. \( L i C l>B e C l_{2}<B C l_{3}<C C l_{4} \)
c. \( L i C l<B e C l_{2}<B C l_{3}<C C l \)
D. \( L i C l>B e C l_{2}>B C l_{3}>C C l_{4} \)