AkshitPareek2004/jee-question-analyzer-data huggingface dataset:
Subject: Chemistry
Assertion
The unshared pairs residing in pure
\( \sigma-o r-\pi \) -orbital do not contribute in
dipole moment.
Reason
The \( \sigma \) -orbital is spherically symetrical, hence it contributes nothing. Similarly,
the two lobes of a pure \( \pi \) -orbital are
projected in opposite directions to
cause no effect.
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
A solution is prepared by dissolving \( \left.0.6 g \text { of urea (molar mass }=60 g m o l^{-1}\right) \)
and \( 1.8 g \) of glucose (molar mass \( = \)
\( \left.180 g m o l^{-1}\right) \) in \( 100 m L \) of water at
\( 27^{0} C . \) The osmotic pressure of the solution is :
\( \left(R=0.08206 L a t m K^{-1} m o l^{-1}\right) \)
A. 4.92 atm
B. 1.64 atm
c. 2.46 atm
D. 8.2 atm
Subject: Physics
A mouse moving along a straight line moves forward \( 8 \mathrm{cm} \) and then backward
\( \mathbf{5} \mathrm{cm} . \) What are the magnitudes of the displacement and distance of the mouse's motion?
A. Displacement : \( 13 \mathrm{cm} ; \) Distance : \( 3 \mathrm{cm} \)
B. Displacement : 3 \( \mathrm{cm} ; \) Distance : \( 13 \mathrm{cm} \)
c. Displacement\( : 13 \mathrm{cm} ; \) Distance \( : 13 \mathrm{cm} \)
D. Displacement : 3 \( c m ; \) Distance : 3 \( c m \)
Subject: Maths
Express the following as a rational number i.e. in the form \( \frac{a}{b} ; \) where \( a, b \in I \) and \( \boldsymbol{b} \neq \mathbf{0} \)
\( \mathbf{0 . 4 2 5} \)
A \( \cdot \frac{12}{40} \)
в. \( \frac{19}{40} \)
c. \( \frac{41}{40} \)
D. \( \frac{17}{40} \)
Subject: Maths
In what ratio, the point of intersection of the common tangents to hyperbola \( \frac{x^{2}}{1}-\frac{y^{2}}{8}=1 \) and parabola \( y^{2}=12 x \)
divides the foci of the given hyperbola?
A . 3: 4
B. 3: 2
\( c .5: 4 \)
D. 5: 3
Subject: Chemistry
Complete the following reactions
\( (i) C r_{2} O_{7}^{2-}+3 S O_{2}+2 H^{+} \rightarrow \)
\( 2 C r^{3+}+_{---}-+H_{2} O \)
\( (i i) 2 M n O_{4}^{-}+5 S O_{3}^{2-}+6 H^{+} \rightarrow \)
\( 2 M N^{2+}+_{---}-3 H_{2} O \)
\( (i i i) C r_{2} O_{7}^{2-}+6 F e^{2+}+14 H^{+} \rightarrow \)
\( 2 C r^{3+}_{---}-7 H_{2} O \)
A \( \cdot 3 S O_{4}^{2-}, S O_{2}^{2-}, F e^{3+} \)
B \( \cdot 3 S O_{4}^{2-}, 5 S O_{4}^{2-}, 6 F e^{3+} \)
\( \mathrm{c} \cdot 3 \mathrm{SO}_{4}^{2-}, \mathrm{SO}_{2}, \mathrm{K}^{+} \)
D. \( S, S O_{2}, F e^{3+} \)
Subject: Physics
During the adiabatic change of ideal gas, The relation between the pressure and the density will be -
\( ^{A} \cdot \frac{p_{1}}{P_{2}}=\left(\frac{d_{2}}{d_{1}}\right)^{1 / \gamma} \)
B . \( p_{1} d_{1}^{\prime \prime}=p_{2} d_{2} \gamma \)
c. \( p_{1} d_{1}^{\gamma}=p_{2} d_{2}^{-} \)
D. \( \frac{p_{1}}{P_{2}}=\left(\frac{d_{2}}{d_{1}}\right)^{2} \)
Subject: Chemistry
For rusting of iron to take place, are required.
\( A \cdot H_{2} O \) and \( O_{2} \)
\( B \cdot C O_{2} \) and \( O_{2} \)
\( \mathbf{C} \cdot \mathrm{H}_{2} \) and \( \mathrm{H}_{2} \mathrm{O} \)
D. \( \mathrm{N}_{2} \) and \( \mathrm{H}_{2} \mathrm{O} \)
Subject: Maths
The price of an article was increased by \( P \% \). Later the new price was decreased
by \( P \% \). If the latest price was \( R S 1 \) then the original price was?
A. Rs.
B. \( R s \frac{1-p^{2}}{1000} \)
C . \( R s \frac{10.000}{10,000-p^{2}} \)
D. \( R s \sqrt{\frac{1-p^{2}}{100}} \)
Subject: Maths
If the mean deviation of number \( 1,1+ \) \( \boldsymbol{d}, \mathbf{1}+\mathbf{2} \boldsymbol{d}, \dots, \mathbf{1}+\mathbf{1 0 0} \boldsymbol{d} \) from their mean
is 255 then \( d \) is equal to
A . 10.0
B. 20.0
c. \( 10 . \)
D. 20.2
Subject: Maths
If two square matrices \( A \) and \( B \) are of same order and, \( \operatorname{Tr}(\boldsymbol{A})=\mathbf{3}, \boldsymbol{T} \boldsymbol{r}(\boldsymbol{B})=\mathbf{5} \)
\( \operatorname{then} \operatorname{Tr}(\boldsymbol{A}+\boldsymbol{B})= \)
A . 15
B. 8
\( c \cdot 3 / 5 \)
D. cannot be determined
Subject: Maths
\( \int \frac{x^{4}+1}{x^{6}+1} d x= \)
A \( \cdot \tan ^{-1} x-\tan ^{-1} x^{3}+c \)
B. \( \tan ^{-1} x-\frac{1}{3} \tan ^{-1}\left(x^{3}\right)+c \)
c. \( \tan ^{-1} x+\tan ^{-1}\left(x^{3}\right)+c \)
D. \( \tan ^{-1} x+\frac{1}{3} \tan ^{-1}\left(x^{3}\right)+c \)
Subject: Physics
At what temperature will the linear kinetic energy of a gas molecule be
equal to that of an electron accelerated through a potential difference of \( 10 \mathrm{V} ? \)
\( A \cdot \) 273 \( k \)
В . \( 19 \times 10^{3} K \)
c. \( 38.65 \times 10^{3} \)
D. \( 11.3 \times 10^{3} K \)
Subject: Chemistry
Which of the following reactions occur
at the cathode during the charging of
lead storage battery?
\( \mathbf{A} \cdot P b^{2+}+2 e^{-} \rightarrow P b \)
B \( \cdot P b^{2+}+S O_{4}^{2-} \rightarrow P b S O_{4} \)
\( \mathbf{c} \cdot P b \rightarrow P b^{2+}+2 e^{-} \)
D \( \cdot P b S O_{4}+2 H_{2} O \rightarrow P b O_{2}+4 H^{+}+S O_{4}^{2-}+2 e^{-} \)
Subject: Physics
Match list - I with List - II
List -

List - II
a) Thermistor
e) High positive \( \boldsymbol{\alpha} \)
b) Carbon
f) \( \alpha \) almost zero
c) Nichrome
g) either positive or negative \( \boldsymbol{\alpha} \)
d) Constantan
h) Negative \( \alpha \) manganin
A. a-g, b-h, c-e, d-f
B. a-h, b-g, c-e, d-f
c. a-e, b-f, c-g, d-h
D. a-e, b-g, c-h, d-f
Subject: Chemistry
The correct order of ionisation energy of
\( \boldsymbol{C}, \boldsymbol{N}, \boldsymbol{O} \& \boldsymbol{F} \) is:
A. \( F<N<C<O \)
в. \( C<N<O<F \)
c. \( C<O<N<F \)
D. \( F<O<N<C \)
Subject: Chemistry
If pressure of a gas contained in a closed vessel is increased by \( 0.4 \% \)
when heated by \( 1^{\circ} \mathrm{C} \) its initia
temperature must be:
\( \mathbf{A} \cdot 250 K \)
B . \( 250^{\circ} \mathrm{C} \)
c. \( 2500 K \)
D. \( 25^{\circ} \mathrm{C} \)
Subject: Physics
In YDSE, having slits of equal width, let
\( \beta \) be the fringe width and \( I_{0} \) be the
maximum intensity. At a distance \( x \) from the central bright fringe, the intensity will be
\( ^{\mathbf{A}} \cdot_{I_{0}} \cos \left(\frac{x}{\beta}\right) \)
B. \( _{I_{0} \cos ^{2}} \frac{2 \pi x}{\beta} \)
c. \( _{I_{0} \cos ^{2}} \frac{\pi x}{\beta} \)
D. \( \frac{I_{0}}{4} \cos ^{2} \frac{\pi x}{\beta} \)
Subject: Physics
The force of repulsion between two
parallel wires is \( \boldsymbol{F} \) when each one of
them carries a certain current I. If the
current in each is doubled, the force
between them would be
\( A \cdot 8 F \)
в. \( 4 F \)
\( c \cdot 2 F \)
D. \( F \)
Subject: Physics
A particle is revolving in a circular path
of radius \( 200 m \) at a speed of \( 20 m / s . \) lts speed is increasing at the rate of \( \sqrt{5} m / s^{2} . \) Its acceleration is
\( \mathbf{A} \cdot 2 m / s^{2} \)
В. \( \sqrt{7} m / s^{2} \)
c. \( 3 m / s^{2} \)
D. \( \sqrt{5} m / s^{2} \)
Subject: Chemistry
Excess of \( K I \) and dil. \( H_{2} S O_{4}, \) were
\( \operatorname{mixed} \operatorname{in} 50 \mathrm{ml} H_{2} O_{2} . \) The \( I_{2} \) liberated
required \( 20 \mathrm{ml} \) of \( 0.1 \mathrm{N} \mathrm{Na}_{2} \mathrm{S}_{2} \mathrm{O}_{3} \). Find
out the strength of \( \boldsymbol{H}_{2} \boldsymbol{O}_{2} \) in \( \boldsymbol{g} / \boldsymbol{l} \boldsymbol{i} \boldsymbol{t}^{-1} \) ?
A. \( 0.17 g / \)lit
B. \( 0.34 g / \)lit
c. \( 0.68 g / l i t \)
D. \( 1.36 g / l i t \)
Subject: Chemistry
\( F e^{3+} \) is reduced to \( F e^{2+} \) by using:
This question has multiple correct options
\( \mathbf{A} \cdot H_{2} O_{2} \) is presence of \( N a O H \)
B. \( N a_{2} O_{2} \) in water
\( \mathrm{C} \cdot \mathrm{H}_{2} \mathrm{O}_{2} \) in presence of \( \mathrm{H}_{2} \mathrm{SO}_{4} \)
D. \( N a_{2} O_{2} \) in presence of \( H_{2} S O_{4} \)
Subject: Physics
The path difference between two wavefronts emitted by coherent sources \( o \)
of wavelength \( 5460 A \) is 2.1 micron. The phase difference between the wavefronts at that point is
A. 7.962
в. 7.962 \( \pi \)
c. \( \frac{7.962}{\pi} \)
D. \( \frac{7.962}{3 \pi} \)
Subject: Physics
Two forces which are perpendicular to each other, act on a body. The resultant
force \( F_{1} \) makes an angle of \( 60^{\circ} \) with one force. The magnitude of the other force is?
A \( \cdot \sqrt{3} F / 2 \)
B . \( F / \sqrt{2} \)
c. \( F / 2 \)
D. \( 2 F \)
Subject: Physics
A velocity-time graph is shown below in figure (i) and (ii) find the acceleration
and displacement
A. \( 3.2 \mathrm{m} \mathrm{s}^{-2}, 40 \mathrm{m} ; 5 \mathrm{s} \mathrm{m} s^{-2}, 60 \mathrm{m} \)
B. \( 4.2 \mathrm{m} \mathrm{s}^{-2}, 40 \mathrm{m} ; 5 \mathrm{s} \mathrm{m} s^{-2}, 60 \mathrm{m} \)
c. \( 3.2 \mathrm{m} s^{-2}, 50 \mathrm{m} ; 5 \mathrm{m} s^{-2}, 60 \mathrm{m} \)
D. \( 3.2 \mathrm{m} \mathrm{s}^{-2}, 40 \mathrm{m} ; 6 \mathrm{m} s^{-2}, 60 \mathrm{m} \)
Subject: Physics
Assertion
It is desirable to slow down fast moving neutrons to sustain controlled chain
reactions.
Reason
Slow moving neutrons efficiently
collides with \( U^{235} \)
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
What is the nature of \( \boldsymbol{C} \boldsymbol{H}_{3}-\boldsymbol{C} \boldsymbol{H}_{2}-\boldsymbol{X} \)
bond towards nucleophilic substitution?
A. More reactive than halobenzene
B. Less reactive than halobenzene
c. Equal reactive as halobenzene.
D. Non-reactive towards nucleophilic substitution
Subject: Physics
Consider two equivalent, triangular hollow prisms \( A \) and \( B \) made of thin glass plates and arranged with negligible spacing as shown in the figure. A beam of white light is incident on prism A from the left. Given that the
refractive index of water is inversely
related to temperature, the beam to the right of prism B would NOT appear white if :
A . both prisms are filled with hot water \( \left(70^{\circ} \mathrm{C}\right) \)
B. both prisms are filled with cold water \( \left(7^{\circ} \mathrm{C}\right) \)
c. both prisms are empty
D. prism A is filled with hot water ( \( 70^{\circ} \mathrm{C} \) ) and prism with cold water \( \left(7^{\circ} \mathrm{C}\right) \)
Subject: Chemistry
Find the number of compounds from the list below that will be oxidised by
Tollens reagent (Ammonical silver nitrate solution)
\( \boldsymbol{H}_{3} \boldsymbol{C}-\boldsymbol{C H O} \quad \boldsymbol{H}_{3} \boldsymbol{C}-\stackrel{\stackrel{O}{\|}}{\boldsymbol{C}-} \)
\( \boldsymbol{C H}_{3} \quad \boldsymbol{H}_{3} \underset{_{O H}^{\boldsymbol{I}}}{\boldsymbol{C}-\boldsymbol{C}}-\boldsymbol{C H}_{3} \)
\( \boldsymbol{H}_{3} \boldsymbol{C}-\boldsymbol{C H}_{2} \boldsymbol{C} \equiv \)
\( \boldsymbol{C H} \quad \boldsymbol{H}_{3} \boldsymbol{C}-\boldsymbol{C} \equiv \boldsymbol{C}- \)
\( \boldsymbol{C H}_{3} \quad \) Fructose
Subject: Chemistry
Which of the following is a correct Irving-
Williams order (tendency of complex
formation)?
\( \mathbf{A} \cdot M n^{2+}<F e^{2+}<C o^{2+}<N i^{2+} \)
B. \( N i^{2+}<C o^{2+}<F e^{2+}<M n^{2+} \)
\( \mathbf{c} \cdot F e^{2+}<M n^{2+}<N i^{2+}<C o^{2+} \)
D \( \cdot C o^{2+}<M n^{2+}<F e^{2+}<N i^{2+} \)
Subject: Physics
In the Wheatstone's network given, \( \boldsymbol{P}= \)
\( \mathbf{1 0 \Omega}, \boldsymbol{Q}=\mathbf{2 0 \Omega}, \boldsymbol{R}=\mathbf{1 5 \Omega}, \boldsymbol{S}=\mathbf{3 0 \Omega}, \) the
current passing through the battery (of
negligible internal resistance) is :
A . \( 0.36 A \)
3. zero
c. \( 0.18 A \)
D. 0.72 A
Subject: Physics
A stone is dropped in a well of depth 500
\( \mathrm{m} \) and a sound is heard after \( 80 / 7 \)
seconds. Then speed of sound is: \( [\boldsymbol{g}= \)
\( \left.\mathbf{1 0 m} / \boldsymbol{s}^{\mathbf{2}}\right] \)
A. \( 300 \mathrm{m} / \mathrm{s} \)
B. \( 350 \mathrm{m} / \mathrm{s} \)
c. \( 400 \mathrm{m} / \mathrm{s} \)
D. \( 330 \mathrm{m} / \mathrm{s} \)
Subject: Maths
By the definition of the definite integral, the value of
\( \lim _{n \rightarrow \infty}\left(\frac{1^{4}}{1^{5}+n^{5}}+\frac{2^{4}}{2^{5}+n^{5}}+\frac{3^{4}}{3^{5}+n^{5}}+\right. \)
is
\( A \cdot \log 2 \)
B \cdot \( \frac{1}{5} \log 2 \)
c. \( \frac{1}{4} \log 2 \)
D. \( \frac{1}{3} \log 2 \)
Subject: Physics
A long rod of radius \( 1 \mathrm{cm} \) and length \( 2 \mathrm{m} \) which is fixed at one end is given a twist of 0.8 radian. The shear strain
developed will be :
A. 0.001 radians
B. 0.004 radians
c. 0.002 radians
D. 0.04 radians
Subject: Maths
Factorise the following expressions:
\( a x^{2} y+b x y^{2}+c x y z \)
A. \( x y(a x+b y+c z) \)
B. \( \operatorname{axy}(x+b y+c z) \)
\( c \cdot b x y(a x+y+c z) \)
D. \( x y(a x+b y-c z) \)
Subject: Maths
There are 3 boxes each having two drawers The first box contains a gold coin in each drawer. The second, a gold coin in one drawer and a silver coin in
the other. The third box contains a silver
coin in each drawer. A box is chosen at
random and a drawer is opened. If a gold coin is found in that drawer, then the probability that the other drawer also contains a gold coin is
A \( \cdot \frac{1}{3} \)
B. \( \frac{2}{5} \)
\( c \cdot \frac{2}{3} \)
\( D .3 \)
5
Subject: Maths
\( \boldsymbol{E} \) and \( \boldsymbol{F} \) are the points on the side \( \boldsymbol{P Q} \)
and \( P R \) respectively of \( \triangle P Q R \) For each
of the following cases, state that \( \boldsymbol{E} \boldsymbol{F} \| \)
\( Q R \) If True type 1 and for False type 0
\( \boldsymbol{P E}=\mathbf{4} \boldsymbol{c m}, \boldsymbol{Q} \boldsymbol{E}=\mathbf{4 . 5} \boldsymbol{c m}, \boldsymbol{P} \boldsymbol{F}= \)
\( 8 c m \) and \( R F=9 c m \)
Subject: Physics
A ball is projected from the ground at angle \( \theta \) with the horizontal. After \( 1 s, \) it
is moving at angle \( 45^{\circ} \) with the horizontal and after \( 2 s \) it is moving
horizontally. What is the velocity of projection of the ball?
A \( \cdot 10 \sqrt{3} m s^{-1} \)
B \( \cdot 20 \sqrt{3} m s^{-1} \)
D. \( 20 \sqrt{2} \mathrm{ms}^{-1} \)
Subject: Maths
If \( a, b, c \) are real, then \( f(x)= \) \( \left|\begin{array}{ccc}\boldsymbol{x}+\boldsymbol{a}^{2} & \boldsymbol{a} \boldsymbol{b} & \boldsymbol{a} \boldsymbol{c} \\ \boldsymbol{a} \boldsymbol{b} & \boldsymbol{x}+\boldsymbol{b}^{2} & \boldsymbol{b} \boldsymbol{c} \\ \boldsymbol{a} \boldsymbol{c} & \boldsymbol{b} \boldsymbol{c} & \boldsymbol{x}+\boldsymbol{c}^{2}\end{array}\right| \) is decreasing
in
A \( \cdot\left(-\frac{2}{3}\left(a^{2}+b^{2}+c^{2}\right), 0\right) \)
B. \( \left(0, \frac{2}{3}\left(a^{2}+b^{2}+c^{2}\right)\right) \)
\( \left(\frac{a^{2}+b^{2}+c^{2}}{3}, 0\right) \)
D. None of these
Subject: Biology
Followings are some of the characteristics of animals:
(i) Diets heavy on fruits,
(ii) White fur
(iii) Need to migrate
(iv) Loud voice (v)
Sticky pads on feet (vi) Layer of fat under skin (vii) Wide and large paws
(viii) Bright colors (ix) Strong tails \( (x) \) Long and large beak. For each characteristic indicate
whether it is adaptation for tropical
rainforests or polar regions. Do you think that some of these
characteristics can be adapted for both regions?
Subject: Physics
Assuming that about 20 MeV of energy is released per fusion reaction \( _{1} H^{2}+1 \)
\( \boldsymbol{H}^{2} \rightarrow_{2} \boldsymbol{H} \boldsymbol{e}^{4}+\boldsymbol{E}+ \) other particles, then
the mass of \( _{1} H^{2} \) consumed per day in a
fusion reactor of power 1 megawatt will approximately be
A . \( 0.001 \mathrm{g} \)
B. 18
c. \( 10.0 \mathrm{g} \)
D. 1000
Subject: Chemistry
Calculate the wavelength (in nanometer) associated with a proton moving at \( 1.0 \times 10^{3} m s^{-1} \)
(Mass of proton= \( 1.67 \times 10^{-27} k g \) and
\( \boldsymbol{h}=\mathbf{6 . 6 3} \times \mathbf{1 0}^{-\mathbf{3 4}} \boldsymbol{J} \boldsymbol{s} \)
A. \( 0.40 n m \)
в. \( 2.5 n m \)
\( \mathrm{c} .14 .0 \mathrm{nm} \)
D. \( 0.32 n m \)
Subject: Physics
The energy required to break a mercury drop of \( 1 c m \) radius into 1000 small
drops of equal size is \( \ldots \ldots J \) (given the
surface tension of mercury is
\( 0.4 N . m^{-1} \)
A. \( 144 \pi \times 10^{-2} \)
B. \( 1.44 \pi \)
c. \( 14.4 \pi \times 10^{-4} \)
D. 144
Subject: Biology
The total volume of air accommodated
in the lungs at the end of maximum forceful inspiration includes:-
(A) \( \boldsymbol{E} \boldsymbol{R} \boldsymbol{V}+\boldsymbol{R} \boldsymbol{V} \)
(B) \( \boldsymbol{T} \boldsymbol{R} \boldsymbol{V}+\boldsymbol{E} \boldsymbol{R} \boldsymbol{V} \)
(C) \( \boldsymbol{T} \boldsymbol{V}+\boldsymbol{I} \boldsymbol{R} \boldsymbol{V}+\boldsymbol{E} \boldsymbol{R} \boldsymbol{V}+\boldsymbol{R} \boldsymbol{V} \)
(D) \( \boldsymbol{V} \boldsymbol{C}+\boldsymbol{R} \boldsymbol{V} \)
A . A only
B. A \& B
c. conly
D. c and
Subject: Chemistry
At \( 21.5^{\circ} \mathrm{C} \) and a total pressure of
\( 0.0787 a t m, N_{2} O_{4} \) is \( 48.3 \% \) dissociated
into \( N O_{2} . \) At what total pressure will the percent dissociation be \( 10.0 \% ? \)
Subject: Physics
A body of mass 5 kg is raised vertically to a height of \( 10 \mathrm{m} \) by a force of \( 170 \mathrm{N} \) the velocity of the body at this height will be
\( \mathbf{A} \cdot 15 m / s \)
в. \( 37 m / s \)
c. \( 9.8 m / s \)
D. \( 21.9 \mathrm{m} / \mathrm{s} \)
Subject: Chemistry
\( X \) is an optically active alkane having lowest molecular mass. Predict the
structure of the major product obtained
on monochlorination of \( \boldsymbol{X} \)
A \( \cdot C H_{3}-C H_{2}-C H_{2}-C(C l)\left(C H_{3}\right)-C H_{2}-C H_{3} \)
B. \( C H_{3}-C H_{2}-C H_{2}-C H\left(C H_{3}\right)-C H(C l)-C H_{3} \)
c. \( C H_{3}-C H_{2}-C H_{2}-C H\left(C H_{3}\right)-C H_{2}-C H_{2}-C l \)
D. \( C l-C H_{2}-C H_{2}-C H_{2}-C H\left(C H_{3}\right)-C H_{2}-C H_{3} \)
Subject: Physics
A force produces an acceleration of \( 4 m / s^{2} \) in a body of mass \( m_{1} \) and the
same force produces an acceleration of
\( 6 m s^{-2} \) in another body of mass \( m_{2} . \) If
the same force is applied to \( \left(\boldsymbol{m}_{1}+\boldsymbol{m}_{2}\right. \)
, then the acceleration will be :
A \( \cdot 10 m / s^{2} \)
B \( \cdot 2 m / s^{2} \)
c. \( 2.4 m / s^{2} \)
D. \( 5.4 \mathrm{m} / \mathrm{s}^{2} \)
Subject: Chemistry
Select the correct statements:
This question has multiple correct options
A. s-block metal oxides are basic in nature, except \( B e O \) which is amphoteric
B. p-block metal oxides are acidic in nature, except \( N O \) \( N_{2} O, C O \)
C. d-block metal oxides are basic, acidic, and amphoteric in nature.
D. d-block metal oxides are only basic in nature.
Subject: Chemistry
Which change in the system will drive
equilibrium to the left in the following reaction?
\( N_{2} O_{5}(g)=N O_{2}(g)+N O_{3}(g) \)
A. Increase the volume
B. Increase the pressure
c. Decrease the amount of \( N O_{3} \)
D. Increase the amount of \( N_{2} O_{5} \)
Subject: Physics
A cube has a side of length \( 1.2 \times \)
\( 10^{-2} \) m. Calculate its volume?
A \( \cdot 1.7 \times 10^{-6} \mathrm{m}^{3} \)
В. \( 1.73 \times 10^{-6} \mathrm{m}^{3} \)
c. \( 1.70 \times 10^{-6} \mathrm{m}^{3} \)
D. \( 1.732 \times 10^{-6} \mathrm{m}^{3} \)
Subject: Chemistry
Equilibrium, \( \boldsymbol{X} \rightleftharpoons \mathbf{2} \boldsymbol{Y} \) and \( \boldsymbol{Z} \rightleftharpoons \boldsymbol{P}+\boldsymbol{Q} \)
are established with 1 mole of \( z \) and \( z \)
taken initially in separate vessels with
equilibrium pressures of 1 atm and 36 atm respectively. If the degree of
dissociations are same. Then \( \boldsymbol{K}_{\boldsymbol{P} \mathbf{2}}= \)
\( \boldsymbol{n} \boldsymbol{K}_{\boldsymbol{P} 1} . \) What is the value of \( n ? \)
Subject: Chemistry
The osmotic pressure of \( 400 \mathrm{ml} \) urea and \( 600 \mathrm{ml} \) glucose solutions are respectively 0.3 atm and 0.4 atm. The osmotic pressure of the solution obtained by mixing them will be?
A. 0.24 atm
B. 0.36 atm
c. 0.48 atm
D. 0.52 atm
Subject: Chemistry
Assertion
Sulphuric acid reacts with sodium chloride in the following way:
\( 2 \mathrm{NaCl}+\boldsymbol{H}_{2} \boldsymbol{S O}_{4} \rightarrow 2 \mathrm{HCl}+\boldsymbol{N} \boldsymbol{a}_{2} \boldsymbol{S O}_{4} \)
Reason
Sulphuric acid because of its low
volatility can be used to manufacture
more volatile acids from their
corresponding salts.
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 cell of the following will measure standard electrode potential of copper electrode?
A \( \cdot P t_{(s)}\left|H_{2}(g, 0.1 b a r)\right| H^{+}(a q, 1 M) \| C u^{2+}(a q, 1 M) \mid C u \)
B . \( P t_{(s)}\left|H_{2}(g, 1 b a r)\right| H^{+}(a q, 1 M)|| C u^{2+}(a q, 2 M) \mid C u \)
C \( \cdot P t_{(s)}\left|H_{2}(g, 1 b a r)\right| H^{+}(a q, 1 M)|| C u^{2+}(a q, 1 M) \mid C u \)
D. \( P t_{(s)}\left|H_{2}(g, 1 b a r)\right| H^{+}(a q, 0.1 M)|| C u^{2+}(a q, 1 M) \mid C u \)
Subject: Physics
A car driven round curved path of radius
\( 18 m \) without the danger of skidding. The coefficient of friction between the
tyres of the car and the surface of the
curved path is \( 0.5 . \) What is the maximum speed in kmph of the car for
safe driving nearly? \( \left(\boldsymbol{g}=\mathbf{1 0 m} \boldsymbol{s}^{-\mathbf{2}}\right) \)
A . 9.3
B. 34.48
c. 18.42
D. 20.15
Subject: Physics
Two sound waves travelling in the same
direction are represented by equations \( \boldsymbol{Y}_{1}=\boldsymbol{A}_{1} \operatorname{Sin} \mathbf{5 0 4} \boldsymbol{\pi} \boldsymbol{t} ; \boldsymbol{Y}_{2}= \)
\( A_{2} \) Sin \( 512 \pi t . \) These two sound waves
superpose to produce beats. The intensity of sound changes from minimum to maximum in a time of
A \( .1 / 2 s \)
B. 1/4s
c. \( 1 / 8 \) s
D. \( 1 / 16 \) s
Subject: Chemistry
Arrange the following in the decreasing order of boiling point:
¡) \( C_{2} H_{5} O H \)
ii) \( \left(\boldsymbol{C H}_{3}\right)_{2} \boldsymbol{N H} \)
iii) \( \boldsymbol{C}_{2} \boldsymbol{H}_{5} \boldsymbol{N} \boldsymbol{H}_{2} \)
A. i > ii > ii
B. ii>i>iii
\( c . \) iii \( >i>i \)
D. iii > ii > i
Subject: Physics
The order of size of an IC is:
\( \mathbf{A} \cdot 10^{-3}-10^{-1} m \)
B \( \cdot 10^{1}-10^{3} m \)
C \( \cdot 10^{-1}-10^{1} m \)
D. \( 10^{-9}-10^{-6} m \)
Subject: Chemistry
Predict the direction in which the
following equilibrium will shift backward
\( N_{2}+3 H_{2} \Leftrightarrow 2 N H_{3} \Delta H= \)
\( (g) \)
\( (g) \)
\( -100 J \) oule
A. increasing Temperature
B. increasing pressure
c. addition of catalyst
D. on addition of \( N H_{3} \)
Subject: Physics
The centre of mass of a system of
particles is at the origin. From this we
conclude that:
A. The numberof particles on positive x-axis is equal to the number of particles on negative x-axis
B. The total mass of the particles on positive x-axis is same as the total mass on negative x-axis
C. The number of particles on X-axis may be equal to the number of particles on Y-axis
D. If there is a particle on the positive \( X \) -axis, there must be at least one particle in the negative \( X \) -axis.:
Subject: Chemistry
How many mL of a solution of
concentration \( 100 \mathrm{mg} \) Co\( ^{2+} \) per mL is
needed to prepare \( 10 \mathrm{mL} \) of a solution of
concentration \( 20 \mathrm{mg} \mathrm{Co}^{2+} \) per \( \mathrm{mL} \) ?