AkshitPareek2004/jee-question-analyzer-data huggingface dataset:
Subject: Physics
The relative positions of the stars in the
night sky
A. are absolutely fixed and therefore we can name constellations with certainty.
B. change appreciably over about four thousand years, which is why the ancient. Egyptians named different constellations than those of today
C . are changing, but very slowly such that appreciable change cannot be observed even over several centuries or even several thousand years.
D. appear to change because the sun moves among them over the course of a year.
Subject: Physics
A metallic wire bent in form of a semi-
circle of radius \( 0.1 \mathrm{m} \) is moved in a
direction parallel to its plane, but perpendicular to a magnetic field \( \boldsymbol{B}= \)
\( 20 \mathrm{mT} \) with a velocity of \( 10 \mathrm{m} / \mathrm{s} \). What is
the induced e.m.f. in wire?
A \( \cdot 4 \times 10^{-3} \) volts
B. \( 4 \times 10^{-2} \) volts
\( \mathrm{c} \cdot 4 \times 10^{-1} \mathrm{v} \) olts
D. None of these
Subject: Physics
Find the angle between \( \vec{a}+\vec{b}+\vec{c} \) and \( \vec{a}+\vec{b}-\vec{c} \)
A \( \cdot \cos ^{-1}\left(\frac{8}{\sqrt{57}}\right) \)
B. \( \cos ^{-1}\left(\frac{9}{\sqrt{75}}\right) \)
\( ^{\mathbf{C}} \cdot \cos ^{-1}\left(\frac{1}{\sqrt{2}}\right) \)
D. \( \cos ^{-1}\left(\frac{-7}{\sqrt{85}}\right) \)
Subject: Chemistry
A \( 0.66 k g \) ball is moving with a speed of
\( 100 m / s . \) The associated wavelength
will be:
\( \left(h=6.6 \times 10^{-34} J s\right) \)
В. \( 6.6 \times 10^{-34} m \)
c. \( 1 \times 10^{-35} m \)
D. \( 1 \times 10^{-32} \)
Subject: Chemistry
A current of 0.965 ampere is passed through \( 500 \mathrm{ml} \) of \( 0.2 \mathrm{M} \) solution of
\( Z n S O_{4} \) for 10 minutes. The molarity of
\( Z n^{2+} \) after deposition of zinc is:
A. 0.1
B. 0.5 \( M \)
c. \( 0.8 \mathrm{M} \)
D. 0.194 M
Subject: Chemistry
Among the following, the false
statements is:
A. latex is a colloidal solution of rubber particles which are positively charged
B. tyndall effect can be used to distinguish between a colloidal solution and a true solution
C. it is possible to cause artificial rain by throwing electrified sand carrying charge opposite to the one on clouds from an aeroplane
D. Iyophilic sol can be coagulated by adding an electrolyte
Subject: Chemistry
Which of the following statement(s) is/are correct?
S1: Dialysis is the method of purification of colloidal solution from electrolytic \& non-electrolytic impurities. S2: Banana bonding occurs in
\( \boldsymbol{A l}_{2}\left(\boldsymbol{C H}_{3}\right)_{6}, \boldsymbol{G a}_{2}\left(\boldsymbol{C H}_{3}\right)_{6}, \boldsymbol{B e} \boldsymbol{H}_{2}(\boldsymbol{S}) \)
S3: There are two types of \( C r-O \) bond
length in \( \boldsymbol{C r} \boldsymbol{O}_{4}^{2-} \)
S4: Total number of stereoisomers in
\( \boldsymbol{K}_{4}\left[\boldsymbol{F} \boldsymbol{e}(\boldsymbol{C} \boldsymbol{N})_{6}\right] \) is 0
A. \( F T F T \)
в. \( T F T F \)
c. \( F F T T \)
D. \( T T F F \)
Subject: Chemistry
Match the following:
\( \begin{array}{ll}\text { Column I } & \text { Column II } \\ \text { A. Sphalerits } & \text { p. } F e C O_{3} \\ \text { B. Malachite } & \text { q. } Z n C O_{3} \\ \text { C. Calamine } & \text { r. } N a_{3} A l F_{8} \\ \text { D. Cryolite } & \text { s. } C u C O_{3} \cdot C u(O H)_{2} \\ \text { E. Siderite } & \text { t. } Z n S\end{array} \)
A. A-r B-p C-t D-q E-s
B. A-t B-s C-q D-p E-r
C. A-t B-r C-q D-p E-s
D. A-t B-s C-q D-r E-p
\( E \cdot A-r B-r C-p D-t E-s \)
Subject: Maths
The middle term in the expansion of
\( \left(\frac{2 x}{3}-\frac{3}{2 x^{2}}\right)^{2 n} \) is
A \( \cdot 2^{n} \mathrm{C}_{n} \)
B \cdot \( (-1)^{n}\left[(2 n !) /(n !)^{2}\right] \cdot x^{-n} \)
\( \mathrm{c} \cdot_{2 n} \mathrm{C}_{n} \cdot \frac{1}{x^{n}} \)
D. none of these
Subject: Physics
The mass of a spaceship is 1000 kg. It is to be launched from the earths
surface out into free space. The value of \( g \) and \( R(\text { radius of earth) are } 10 m / s \)
and \( 6400 \mathrm{km} \) respectively. The required energy for this work will be:
A \( \cdot 6.4 \times 10^{11} J \)
\( J \)
В. \( 6.4 \times 10^{8} J \)
c. \( 6.4 \times 10^{9} J \)
D. \( 6.4 \times 10^{10} J \)
Subject: Physics
Near the earth's surface time period of a satellite is 1.4 hrs. Find its time period
if it is at the distance \( ^{\prime} 4 R^{\prime} \) from the
centre of the earth.
A . 32 hrs
B. \( \left(\frac{1}{8 \sqrt{2}}\right) \) hrs
c. \( 8 \sqrt{2} \hbar r s \)
D. 16 hrs
Subject: Physics
n fig, there is a uniform conducting
structure in which each small square
has side \( a \). The structure is kept in a
uniform magnetic field \( B \). Then the
magnetic force on the structure will be:
\( A \cdot 2 \sqrt{2} i B a \)
B. \( \sqrt{2} i \) Ва \( a \)
\( c .2 i B a \)
D. \( i B a \)
Subject: Maths
Let \( A_{0}, A_{1}, A_{2}, A_{3}, A_{4}, A_{5} \) be a regular hexagon inscribed in a circle of unit radius. Then the product of the lengths
of the line segments \( A_{0} A_{1}, A_{0} A_{2} \) and
\( \boldsymbol{A}_{0} \boldsymbol{A}_{4} \) is:
A \( \cdot \frac{3}{4} \)
B. \( 3 \sqrt{3} \)
\( c \cdot 3 \)
D. \( \frac{3 \sqrt{3}}{2} \)
Subject: Physics
The masses in figure slide on a
frictionless table. \( m_{1} \) but not \( m_{2}, \) is
fastened to the spring. If now \( m_{1} \) and
\( m_{2} \) are pushed to the left, so that the
spring is compressed a distance \( \mathrm{d} \) what will be the amplitude of the
oscillation of \( m_{1} \) after the spring
system is released?
\( ^{\mathrm{A}} \cdot_{A}=(\sqrt{\frac{m_{1}}{m_{1}+m_{2}}}) \)
B. \( A=(\sqrt{\frac{m_{2}}{m_{1}+m_{2}}}) d \)
\( ^{\mathbf{c}} \cdot_{A}=(\sqrt{\frac{m_{1}}{m_{1}+m_{2}}}) d \)
D. None
Subject: Maths
If \( I=\int \frac{x^{2}}{(x-a)(x-b)} d x, \) then
equals
A \( \cdot x+\frac{1}{a-b} \log \left|\frac{x-a}{x-b}\right|+C \)
в. \( \quad x+\frac{1}{a-b} \log \left|\frac{x-a}{x-b}\right|^{a^{2}+b^{2}}+C \)
c. \( x+\frac{1}{a-b}\left\{a^{2} \log |x-a|-b^{2} \log |x-b|\right\}+C \)
D. none of these
Subject: Maths
\( \int \frac{1}{\sqrt{x}} \tan ^{4} \sqrt{x} \sec ^{2} \sqrt{x} d x= \)
A \( \cdot 2 \tan ^{5} \sqrt{x}+c \)
B. \( \frac{1}{5} \tan ^{5} \sqrt{x}+c \)
c. \( \frac{2}{5} \tan ^{5} \sqrt{x}+c \)
D. None of these
Subject: Maths
The surface area of the cuboid is
\( \mathbf{1 6 9} m^{2} . \) Its length is \( 3 \mathrm{m} \) and height is 9
m. Find its width.
A \( .4 .79 \mathrm{m} \)
B. \( 4.5 \mathrm{m} \)
c. \( 4 \mathrm{m} \)
D. \( 5 \mathrm{m} \)
Subject: Physics
A uniform steel rod of \( 5 m m^{2} \) cross
section is heated from \( 0^{\circ} C \) to \( 25^{\circ} C . \)
Calculate the force which must be
exerted to prevent it from expanding.
Also calculate strain.
(a for steel \( =12 \times 10^{-6} /^{\circ} \mathrm{C} \) and \( \gamma \) for
steel \( \left.=20 \times 10^{10} N / m^{2}\right) \)
Subject: Chemistry
\( \boldsymbol{H} \boldsymbol{P} \boldsymbol{O}_{4}^{2-}+\boldsymbol{H}_{2} \boldsymbol{O} \rightleftharpoons \boldsymbol{H}_{3} \boldsymbol{O}^{+}+\boldsymbol{P} \boldsymbol{O}_{4}^{3-} \)
In the equation above, which compounds are Bronsted bases?
\( \mathbf{A} \cdot H P O_{4}^{3-} \) and \( H_{2} O \)
B. \( H_{2} O \) and \( P O_{4}^{3-} \)
\( \mathrm{c} \cdot H_{3} O^{+} \) and \( H_{2} \mathrm{O} \)
D. \( H P O_{4}^{2-} \) and \( P O_{4}^{3-} \)
Subject: Chemistry
\( \mathbf{3} \boldsymbol{C u}+\mathbf{8} \boldsymbol{H} \boldsymbol{N} \boldsymbol{O}_{3} \rightarrow \boldsymbol{3} \boldsymbol{C u}\left(\boldsymbol{N} \boldsymbol{O}_{3}\right)_{2}+ \)
\( 4 H_{2} O+2 N O \)
The volume of nitric oxide collected at
the same time is :
\( [\mathrm{Cu}=64, \mathrm{H}=1,0=16, \mathrm{N}=14] \)
A . 5.6
B. \( 11.2 \mathrm{L} \)
c. 22.4
D. 44.8
Subject: Chemistry
A stream of electrons from a heated
filament was passed between two charged plates kept at a potential difference V esu. If e and m are charge and mass of an electron, respectively, then the value of \( h / \lambda \) (where \( \lambda \) is wavelength associated with electron wave) is given by :
\( \mathbf{A} \cdot 2 m e V \)
в. \( \sqrt{m e V} \)
c. \( \sqrt{2 m e V} \)
D. mev
Subject: Biology
Q Type your question_
statement regarding this -
A. When agricultural fields are sprayed with DDT, it is carried by runoff water into nearby aquatic bodies
B. River water may have a very low concentration of DDT,
but the concentration of DDT, which is still suitable for
consumption by human beings
C. Increased concentration of DDT in birds affects
calcium metabolism due to which egg shells become thin and break before maturity
D. None of these
Subject: Chemistry
Consider the reactions:
Identify \( \boldsymbol{A}, \boldsymbol{X}, \boldsymbol{Y} \) and \( \boldsymbol{Z} \)
Silver mirror observe
A \( . A- \) Ethanol, \( X \) - Acetaldehyde, \( Y \) - Butanone, \( Z \) Hydrazone
B. \( A- \) Methoxymethane, \( X \) - Ethanoic acid, \( Y \) -
Acetate ion, \( Z \) - hydrazine
C. \( A- \) Methoxymethane, \( X \) - Ethanol, \( Y \) Ethanoic acid, \( Z \) - Semicarbazide
D. \( A- \) Ethanal, \( X \) - Ethanol, \( Y-B u t-2- \) enal, \( Z \) -
Semicarbazone
Subject: Biology
Match column I with column II and
select the correct option from the codes
given below.

Column II Column I (Phytohormone) where it is synthesised
Tissues
\( \begin{array}{llll}\text { A. } & \text { IAA } & \text { (i) } & \text { undergoing }\end{array} \) senescence
B. Cytokinins \( \quad \) (ii) \( \quad \) Shoot apices
C. Ethylene \( \quad \) (iii) \( \quad \) Root apices
\( A \cdot A-(i i), B-(i i i), C-(i) \)
B. A-(iii), B-(ii), C-(i)
C \( . A \) -(i), B-(ii), C-(iii)
D. A-(ii), B-(i), C-(iii)
Subject: Chemistry
Hydrolysis constants of two salts \( \boldsymbol{K} \boldsymbol{A} \)
and \( K B \) of weak acids \( H A \) and \( H B \) are
\( 10^{-8} \) and \( 10^{-6} \) respectively. If the
dissociation constant of third acid \( H C \)
is \( 10^{-2} \), then the order of
acidic strengths of three acids is:
A. \( H A>H B>H C \)
в. \( H B>H A>H C \)
c. \( H C>H A>H B \)
D. \( H A=H B=H C \)
Subject: Maths
n the adjoining figure (not drawn to scale)
\( \boldsymbol{P S}=\mathbf{4} \boldsymbol{c m}, \boldsymbol{S R}=\mathbf{2} \boldsymbol{c m}, \boldsymbol{P T}=\mathbf{3} c \boldsymbol{m} \)
and \( Q T=5 c m \)
(i) Show that \( \triangle P Q R \sim \triangle P S T \).
(ii) Calculate \( S T, \) if \( Q R=5 \cdot 8 \mathrm{cm} \)
Subject: Chemistry
Which of the following statement is not \( c \)
Orrect?
\( \mathbf{A} \cdot L a(O H)_{3}, \) is less basic than \( L u(O H)_{3} \)
B. In lanthanide series, ionic radius of \( L n^{3}+ \) ions
decreases
C. \( L a \) is actually an element of transition series rather than lanthanide series
D. Atomic radii of \( Z r \) and \( H f \) are same because of lanthanide contraction
Subject: Chemistry
Statement 1: One mole of NaCl contains
2 moles of ions.
Statement 2: NaCl is a stable salt at
room temperature.
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: Maths
ABCD is a parallelogram, \( A E \perp D C \) and \( \boldsymbol{C F} \perp \boldsymbol{A D} . \) If \( \boldsymbol{A B}=\mathbf{1 6} \mathrm{cm}, \boldsymbol{A} \boldsymbol{E}=\mathbf{8} c \boldsymbol{m} \)
and \( \boldsymbol{C F}=\mathbf{1 0} \mathrm{cm}, \) find \( \boldsymbol{A} \boldsymbol{D} \)
Subject: Physics
A light ray is incident on a transparent sphere of index \( =\sqrt{2}, \) at an angle of
incidence \( =45 . \) What is the deviation of
a tiny fraction of the ray, which enters the sphere, undergoes two internal reflections and then refracts out into air
\( ? \)
A . 270
B. 240
\( c . \) 30
D. 180
Subject: Maths
Let \( \boldsymbol{f}: \boldsymbol{R} \rightarrow \boldsymbol{R}: \boldsymbol{f}(\boldsymbol{x})=\left(\boldsymbol{x}^{2}-\boldsymbol{3} \boldsymbol{x}+\boldsymbol{2}\right) \)
Find \( \boldsymbol{f} \boldsymbol{o} \boldsymbol{f}(\boldsymbol{x}) \)
Subject: Biology
Assertion
A rise in \( \mathrm{PCO}_{2}, \mathrm{H}+ \) ions and temperature
shifts the \( \mathrm{Hb} \mathrm{O}_{2} \) dissociation curve to
right.
Reason
A rise in \( \mathrm{PCO}_{2} \) or fall in pH decreases oxygen affinity for haemoglobin.
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
One liter of solution contains \( 10^{-5} \)
moles of \( \boldsymbol{H}^{+} \) ions at \( 25^{\circ} \) C.Percentage
ionisation of water in solution is:
A \( .1 .8 \times 10^{-7} \% \)
В. \( 1.8 \times 10^{-5} \% \)
c. \( 3.6 \times 10^{-9} \% \)
D. \( 1.8 \times 10^{-11} \% \)
Subject: Chemistry
The conductivity of \( 0.20 \mathrm{M} \) solution of
\( K C l \) at \( 298 \mathrm{K} \) is \( 0.0248 S c m^{-1} \)
Calculate its molar conductivity.
A \( \cdot 112 \operatorname{Scm}^{2} m o l^{-1} \)
B. \( 124 S c m^{2} m o l^{-1} \)
\( \mathbf{c} \cdot 136 S c m^{2} m o l^{-1} \)
D. 148 Scm \( ^{2} \) mol \( ^{-1} \)
Subject: Chemistry
\( 0.16 g \) of \( N_{2} H_{4} \) are dissolved in water
and the total volume made up to
500 \( m L \). Calculate the percentage of
\( N_{2} H_{4} \) that has reached with water at
this dilution. The \( K_{b} \) for \( N_{2} H_{4} \) is \( 4.0 \times \)
\( \mathbf{1 0}^{-6} \boldsymbol{M} \)
Subject: Chemistry
Identify the salt(s) of an oxyacid formed
from univalent metal \( (M) \)
This question has multiple correct options
A \( . M_{2} S O_{4} \)
B. \( M\left(N O_{3}\right)_{2} \)
\( \mathbf{c} \cdot M_{3} C l O_{3} \)
D. \( M H C O_{3} \)
Subject: Physics
In a current voltage plot of a \( \mathrm{p}-\mathrm{n} \)
junction, find out the correct statement
from the following?
A. A p-njunction is essentially nonconducting when it is forward biased and highly conducting when it is reverse biased
B. A p-njunction is highly conducting when it is forward biased and essentially nonconducting when it is reverse biased
C. A p-njunction is highly conducting when it is forward biased as well as when it is reverse biased
D. A p-njunction is essectially nonconducting when it is forward biased as well as when it is reverse biased
Subject: Maths
Solve \( \cos \left[\tan ^{-1}\left[\sin \left(\cot ^{-1} x\right)\right]\right] \)
A \( \cdot \sqrt{\frac{x^{2}+2}{x^{2}+3}} \)
B. \( \sqrt{\frac{x^{2}+2}{x^{2}+1}} \)
c. \( \sqrt{\frac{x^{2}+1}{x^{2}+2}} \)
D. None of these
Subject: Physics
An electrical charge of \( 2 \mu C \) is placed at the point \( (1,2,3) . \) At the point (2,3,4) the electric field and potential will be :
A \( \cdot 6 \times 10^{3} N C^{-1} \) and \( 6 \times 10^{3} J C^{-1} \)
B . \( 6000 N C^{-1} \) and \( 6000 \sqrt{3} J C^{-1} \)
c. \( 6 \times 10^{3} N C^{-1} \) and \( 3 \sqrt{3} J C^{-1} \)
D. none of the above
Subject: Physics
An inductor and resistor are connected
in series with an ac source. In this
circuit.
A. The current and the PD across the resistance lead the
PD across the inductance
B. The current and the PD across the resistance lag behind the PD across the inductance by an angle \( \pi / 2 \)
C. The current and the PD across the resistance lag behind the PD across the inductance by an angle \( \pi \)
D. The PD across the resistance lags behind the PD across the inductance by an angle \( \pi / 2 \) but the current in resistance leads the PD across the inductance by \( \pi / 2 \)
Subject: Physics
Two point masses \( m \) and \( 3 m \) are placed
at distance. The moment of inertia of the
system about an axis passing through the center of mass of system and perpendicular to the line joining the point masses is
A \( \cdot \frac{3}{5} m r^{2} \)
в. \( \frac{3}{4} m r^{2} \)
c. \( \frac{3}{2} m r^{2} \)
D. \( \frac{6}{7} m r^{2} \)
Subject: Biology
If the cell of an organism heterozygous for two pairs of genes represented by \( x x, z z \) undergoes meiosis, then the
possible genotypic combination of
gametes will be
A. \( x z ; x z ; x z ; x z \)
B. \( x z ; x z ; x z \)
c. \( x x ; Z z ; x z \)
D. Data incomplete
Subject: Chemistry
Substance \( X \) has three common
isotopes: \( X-48, X-49 \) and \( X-51 \)
If the relative abundances of these three
isotopes are \( 42 \%, 38 \% \) and \( 20 \% \)
respectively, what is the atomic mass of substance \( \boldsymbol{X} \) ?
A . 49.33 amu
B. 48.62 amu
c. 50.67 amu
D. 48.98 amu
E . 49.67 amu
Subject: Physics
The number of electric field lines
\( \operatorname{crossing} \) an area \( \Delta S \) is \( n_{1} \) when \( \Delta \vec{S} \| \vec{E}_{1} \)
while the number of field lines
crossing the same area is \( n_{2} \) when \( \Delta \overrightarrow{\boldsymbol{S}} \) makes an angle of \( 30^{\circ} \) with \( \vec{E} \). Then
A \( \cdot n_{1}=n_{2} \)
в. \( n_{1}>n_{2} \)
c. \( n_{1}<n_{2} \)
D. cannot say anything
Subject: Maths
When the circumference of a toy balloon
is increased from \( 20 \mathrm{cm} \) to \( 25 \mathrm{cm} \), the
radius is increased by
A \( .5 \mathrm{cm} \)
B. \( 2 \frac{1}{2} c m \)
c. \( 5 / \pi c m \)
D. \( 5 / 2 \pi c m \)
E . \( \pi / 5 \mathrm{cm} \)
Subject: Maths
Let \( A \) and \( B \) be two events such that
\( \boldsymbol{P}(\boldsymbol{A} \cup \boldsymbol{B})=\boldsymbol{P}(\boldsymbol{A} \cap \boldsymbol{B}) . \) Then
Statement \( 1: P(A \cap \bar{B})=P(\bar{A} \cap B)= \)
0
Statement 2: If \( \boldsymbol{P}(\boldsymbol{A})+\boldsymbol{P}(\boldsymbol{B})=\mathbf{1} \)
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: Chemistry
The equilibrium constant for the following reaction is:
\( 2 F e^{3+} 3 I^{\ominus} \rightleftharpoons 2 F e^{2+}+I_{3}^{\ominus} \)
The standard reduction potential in
acidic conditions is \( 0.78 V \) and \( 0.54 V \)
respectively, for \( \boldsymbol{F e}^{\mathbf{3}}+ \)
\( \left|\boldsymbol{F} \boldsymbol{e}^{2+} \boldsymbol{a} \boldsymbol{n} \boldsymbol{d} \boldsymbol{I}_{3}^{\ominus}\right| \boldsymbol{I}^{\ominus} \) couples
\( \mathbf{A} \cdot K_{e q}=10^{8} \)
В. \( K_{e q}=10^{7} \)
\( \mathbf{c} \cdot K_{e q}=10^{5} \)
D. None of these
Subject: Chemistry
Assertion: Enzymes have active sites that hold substrate molecule for a
chemical reaction
Reason : Drugs compete with natural substrate by attaching covalently to the active site of enzyme
A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B. Both Assertion and Reason are correct and Reason is NoT the correct explanation for Assertion
c. Both Assertion and Reason are incorrect
D. Assertion is correct but Reason is incorrect
E. Assertion is incorrect but Reason is correct
F. Answer reqiured
Subject: Physics
The change in the value of \( g \) at a height
\( h \) above the surface of the earth is the
same as at a depth d below the surface of the earth.When both \( h \) and \( d \) are
much smaller than the radius of
earth,then which one of the following is
true?
A \( . a=h / 2 \)
В. \( d=3 h / 2 \)
c. \( d=2 h \)
\( \mathbf{D} \cdot h=d \)
Subject: Chemistry
Correct balanced equation from the
following reactions is:
\( \mathbf{A} \cdot 2 B a C l_{2}+H_{2} S O_{4} \rightarrow B a S O_{4}+H C l \)
B \( \cdot B a C l_{2}+H_{2} S O_{4} \rightarrow B a S O_{4}+2 H C l \)
\( \mathbf{c} \cdot 3 B a C l_{2}+H_{2} S O_{4} \rightarrow 4 B a S O_{4}+2 H C l \)
D. \( B a C l_{2}+H_{2} S O_{4} \rightarrow B a S O_{4}+H C l \)
Subject: Chemistry
Assertion
Acetic acid is a colourless liquid that when undiluted is called glacial acetic
acid.
Reason
Acetic acid has a distinctive sour taste
and pungent smell
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
Two wires carrying current in opposite
directions are placed a distance \( a \)
apart Which of the following will cause the greatest increase in the magnitude of the force between the wires?
A. Doubling the current in one wire.
B. Doubling the current in both wires.
c. Doubling the distance between the wires to \( 2 a \)
D. Decreasing the distance between the wires to
E. Running the currents in the same direction
Subject: Maths
Resolve \( \frac{1}{\boldsymbol{x}^{4}+1} \) into partial fractions.
A \( \frac{(x+\sqrt{2})}{4 \sqrt{2}\left(x^{2}+x \sqrt{2}+1\right)}-\frac{(x-\sqrt{2})}{4 \sqrt{2}\left(x^{2}-x \sqrt{2}+1\right)} \)
B. \( \frac{(x+\sqrt{2})}{\sqrt{2}\left(x^{2}+x \sqrt{2}+1\right)}-\frac{(x-\sqrt{2})}{\sqrt{2}\left(x^{2}-x \sqrt{2}+1\right)} \)
\( ^{\mathbf{C}}-\frac{(x+\sqrt{2})}{2 \sqrt{2}\left(x^{2}+x \sqrt{2}+1\right)}+\frac{(x-\sqrt{2})}{2 \sqrt{2}\left(x^{2}-x \sqrt{2}+1\right)} \)
D. \( \frac{(x+\sqrt{2})}{2 \sqrt{2}\left(x^{2}+x \sqrt{2}+1\right)}-\frac{(x-\sqrt{2})}{2 \sqrt{2}\left(x^{2}-x \sqrt{2}+1\right)} \)
Subject: Chemistry
For a reaction, \( \boldsymbol{A}(s)+\mathbf{2} \boldsymbol{B}^{+} \leftrightharpoons \boldsymbol{A}^{2+}+ \)
\( 2 B, K_{c} \) has been found to be \( 10^{12} \). The
\( \boldsymbol{E}_{c e l l}^{o} \) is:
A . \( 0.354 V \)
в. \( 0.708 V \)
c. \( 0.0098 V \)
D. \( 1.36 V \)
Subject: Biology
Assertion
The zygote developed from sexual reproduction is diploid.
Reason
In sexual reproduction, haploid
gametes fuse and form zygote.
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
Assertion: Dipole oscillations produce electromagentic waves, Reason: Accelerated charge produces electromagnetic waves
A. If both assertion and reason are true but the reason is the correct explanation of assertion.
B. If both assertion and reason are true but the reason is not the correct explanation of assertion.
c. If assertion is true but reason is false
D. If both the assertion and reason are false
E. If reason is true but assertion is false
Subject: Physics
If the total binding energies of \( _{1}^{2} \boldsymbol{H},_{2}^{4} \boldsymbol{H} \boldsymbol{e} \)
\( _{26}^{56} F e \&_{92}^{235} U \) are 2.22,28.3,492 and
\( 1786 M e V \) respectively, identify the most stable nucleus of the following
\( \mathbf{A} \cdot_{26}^{56} F e \)
в. \( _{1}^{2} \mathrm{H} \)
\( \mathrm{C} \cdot \frac{235}{922} \mathrm{U} \)
\( \mathbf{D} \cdot_{4}^{2} H e \)
Subject: Physics
Under the action of a force \( \boldsymbol{F}=\boldsymbol{C x} \), the
position of a body changes from 0 to \( x \) The work done is :
\( ^{\mathbf{A}} \cdot \frac{1}{2} C x^{2} \)
в. \( C x^{2} \)
\( c \cdot C x \)
D. \( \frac{1}{2} C x \)
Subject: Physics
A superconductor has \( T_{c}(0)=100 K \)
When a magnetic field of 7.5 T is
applied, its \( T_{c} \) decreases to 75 K. For this
material one can definitely say that
when
A \( \cdot B=5 T, T_{c}(B)=80 K \)
В. \( B=5 T, 75 K<T_{c}(B)<100 K \)
C . \( B=10 T, 75 K<T_{c}(B)<100 K \)
D. \( B=10 T, T_{c}=70 K \)
Subject: Chemistry
\( C u(S)+2 A g^{+}(a q) \rightarrow C u^{2+}(a q)+2 A g(S) \)
In the given reaction, the reduction half
cell reaction is:
A \( \cdot \mathrm{Cu}^{2+}+2 \mathrm{e}^{-} \rightarrow \mathrm{cu} \)
B. \( \operatorname{cu} 2 e^{-} \rightarrow c u^{2} \)
\( \mathrm{c} \cdot \mathrm{Ag}^{+}+\mathrm{e}^{-} \rightarrow \mathrm{Ag} \)
D. \( A g e^{-} \rightarrow A g^{+} \)
Subject: Chemistry
Assertion: \( N a C l(a q) \) is an electrolyte. Reason: It forms ions in solution.
A. Both Assertion and Reason are true and Reason is the correct explanation of Assertion
B. Both Assertion and Reason are true but Reason is not the correct explanation of Assertion
c. Assertion is true but Reason is false
D. Assertion is false but Reason is true
E. Both Assertion and Reason are false