AkshitPareek2004/jee-question-analyzer-data huggingface dataset:
Subject: Chemistry
Consider the chemical reaction:
\( N_{2}(g)+3 H_{2}(g) \rightarrow 2 N H_{3}(g) \)
The rate of this reaction can be
expressed; in terms of time and of
concentration of \( N_{2}(g), H_{2}(g) N H_{3}(g) \)
Identify the correct relationship
amongst the rate expressions.
A \( \cdot \operatorname{Rate}=-\frac{d\left[N_{2}\right]}{d t}=-\frac{1}{3} \frac{d\left[H_{2}\right]}{d t}=+\frac{1}{2} \frac{d\left[N H_{3}\right]}{d t} \)
B. \( \operatorname{Rate}=-\frac{d\left[N_{2}\right]}{d t}=-\frac{3 d\left[H_{2}\right]}{d t}=\frac{2 d\left[N H_{3}\right]}{d t} \)
c. \( \operatorname{Rate}=-\frac{d\left[N_{2}\right]}{d t}=-\frac{1}{3} \frac{d\left[H_{2}\right]}{d t}=\frac{d\left[N H_{3}\right]}{d t} \)
D. \( \operatorname{Rate}=-\frac{d\left[N_{2}\right]}{d t}=\frac{d\left[H_{2}\right]}{d t}=\frac{d\left[N H_{3}\right]}{d t} \)
Subject: Maths
Divide the given polynomial by the given monomial:
\( \left(\frac{2}{3} a^{2} b^{2} c^{2}+\frac{4}{3} a b^{2} c^{2}\right) \div \frac{1}{2} a b c \)
A \( \cdot \frac{4}{3}(a b c+b c) \)
в. \( \frac{2}{3}(a b c+2 b c) \)
c. \( \frac{4}{3}(a b c+2 b c) \)
D. None
Subject: Chemistry
The solubility product of a saturated
solution of \( A g_{2} C r O_{4} \) in water at \( 298 \mathrm{K} \) will
be................, if the EMF of the cell:
\( \boldsymbol{A} \boldsymbol{g} \mid \boldsymbol{A} \boldsymbol{g}^{\oplus}\left(\boldsymbol{s} \boldsymbol{a} \boldsymbol{t} \boldsymbol{A} \boldsymbol{g}_{2} \boldsymbol{C r} \boldsymbol{O}_{4} \boldsymbol{s o l}\right) \| \boldsymbol{A} \boldsymbol{g}(\boldsymbol{0} . \boldsymbol{1} \boldsymbol{M} \)
is \( 0.164 V \) at \( 298 \mathrm{K} \)
A. \( 2.287 \times 10^{-12} M^{3} \)
B . \( 2.659 \times 10^{-12} M^{3} \)
c. \( 1.965 \times 10^{-12} M^{3} \)
D. None of these
Subject: Chemistry
Boiling point of alkyl iodide, bromide, chloride and methane are in which of
the following order?
A . Iodide \( > \) Bromide \( > \) Chloride \( >C H_{4} \)
B. \( C H_{4}> \) Chloride \( > \) Bromide\( > \) Iodide
c. \( C H_{4}> \) Iodide \( > \) Bromide \( > \) Chloride
D. Chloride \( > \) Bromide \( > \) Iodide \( >C H_{4} \)
Subject: Chemistry
Assertion
A sample of lead (II) bromide, \( P b B r_{2} \)
was placed in a crucible. The ends of two carbon electrodes were put in the
solid and connected to a lamp and
power pack. At first the lamp did not
light, but when the bromide was heated and began to melt, the lamp began to glow. Explain these observations.
Reason
The glowing of lamp tells us that the compound conducts when in molten state in which there are ions which are
free to move. This also suggests that
\( P b B r_{2} \) is ionic.
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
Area of the quadrilateral formed by the
ends of major axis and minor axis of an ellipse is \( 8 \sqrt{3} \). The distance between the foci is \( 4 \sqrt{2}, \) then the eccentricity of the ellipse is:
A \( \cdot \frac{1}{\sqrt{3}} \)
B. \( \frac{1}{3} \)
c. \( \sqrt{\frac{2}{3}} \)
D. 4
Subject: Maths
Let \( X \) be the set consisting of the first 2018 terms of the arithmetic
progression \( 1,6,11,_{-} \) \( -, \) and \( Y b e \)
the set consisting of the first 2018 terms of the arithmetic progression
\( \mathbf{9}, \mathbf{1 6}, \mathbf{2 3} \)
. Then, the
number of elements in the set XUY is
\( ? \)
Subject: Chemistry
Which of the following is the correct arrangement of ligands in terms of field
strength?
A \( \cdot C l^{-}<F^{-}<N C S^{-}<N H_{3}<C N^{-} \)
B. \( N H_{3}<F^{-}<C l^{-}<N C S^{-}<C N^{-} \)
c. \( C l^{-}<F^{-}<N C S^{-}<C N^{-}<N H_{3} \)
D. \( N H_{3}<C N^{-}<N C S^{-}<C l^{-}<F^{-} \)
Subject: Physics
A rope brake is fitted to a flywheel of
diameter \( =1 \mathrm{m} . \) The flywheel runs at 220
r.p.m. It is required to absorp \( 5.25 \mathrm{kW} \) of
brake power. Difference in the two pulls \( (T-S) \) is :
\( \mathbf{A} \cdot 456 N \)
B. \( 654 N \)
\( c .564 N \)
D. \( 465 N \)
Subject: Physics
Two vessels \( A \) and \( B \) of different shapes
have the same base area and are filled
with water up to the same height h (see figure). The force exerted by water on
the base is \( F_{A} \) for vessel \( A \) and \( F_{B} \) for
vessel B. The respective weights of the
water filled in vessels are \( W_{A} \) and \( W_{B} \)
Then:
\( \mathbf{A} \cdot F_{A}>F_{B} ; W_{A}>W_{B} \)
B \( \cdot F_{A}=F_{B} ; W_{A}>W_{B} \)
\( \mathbf{c} \cdot F_{A}=F_{B} ; W_{A}<W_{B} \)
D. \( F_{A}>F_{B} ; W_{A}=W_{B} \)
Subject: Maths
If \( \frac{\mathbf{x}^{2}}{\left(\mathbf{x}^{2}+\mathbf{1}\right)\left(\mathbf{x}^{2}+\mathbf{2}\right)}=\frac{\mathbf{A} \mathbf{x}+\mathbf{B}}{\mathbf{x}^{2}+\mathbf{1}}+ \)
\( \frac{\mathbf{C x}+\mathbf{D}}{\mathbf{x}^{2}+\mathbf{2}} \operatorname{then}(\boldsymbol{A}, \boldsymbol{C})= \)
A. (1,-1)
в. (1,1)
D. (1,2)
Subject: Physics
Calculate the de Broglie wavelength associated with a helium atom in a
helium gas sample at \( 27^{\circ} \mathrm{C} \) and 1 at \( \mathrm{m} \)
pressure.
\( \mathbf{A} \cdot 7.3 \times 10^{-11} \) metre.
B . \( 3.6 \times 10^{-10} \) metre.
c. \( 7.3 \times 10^{-10} \) metre.
D. \( 3.6 \times 10^{-11} \) metre.
Subject: Physics
A spring \( \left(k=100 N m^{-1}\right) \) is suspended
in vertical position having one end fixed at top \( \& \) other end joined with a \( 2 \mathrm{kg} \) block. When the spring is in non deformed shape, the block is given initial velocity \( 2 \mathrm{m} / \mathrm{s} \) in downward direction. The maximum elongation of the spring is \( \left(\frac{\sqrt{3}+1}{n}\right) \) meter. Find \( n \)
Subject: Biology
Which is the sequence of four whorls of
flower from outside to inside?
A. Calyx \( \rightarrow \) Corolla \( \rightarrow \) Androceium \( \rightarrow \) Gynoceium
B. Gynoceium \( \rightarrow \) Androceium \( \rightarrow \) Corolla \( \rightarrow \) Calyx
C . Calyx \( \rightarrow \) Androceium \( \rightarrow \) Corolla \( \rightarrow \) Gynoceium
D. Gynoceium \( \rightarrow \) Corolla \( \rightarrow \) Androceium \( \rightarrow \) Calyx
Subject: Maths
Resolve into partial fraction \( \frac{x^{3}-3 x-2}{\left(x^{2}+x+1\right)(x+1)^{2}} \)
A \( \cdot \frac{3 x-1}{x^{2}-x+1}+\frac{1}{(x+1)^{2}}-\frac{3}{(x+1)} \)
B. \( \frac{3 x-1}{x^{2}-x+1}+\frac{2}{(x+1)^{2}}-\frac{3}{(x+1)} \)
c. \( \frac{3 x-1}{x^{2}+x+1}+\frac{2}{(x+1)^{2}}-\frac{3}{(x+1)} \)
D. \( \frac{3 x-1}{x^{2}+x+1}+\frac{2}{(x+1)^{2}}+\frac{3}{(x+1)} \)
Subject: Physics
Three right angled prisms of refractive
indices \( n_{1}, n_{2} \) and \( n_{3} \) are fixed together
using an optical glue as shown in figure. If a ray passes through the prisms without suffering any deviation,
then
A \( . n_{1}=n_{2}=n_{3} \)
B . \( n_{1}=n_{2} \neq n_{3} \)
c. \( 1+n_{1}=n_{2}+n_{3} \)
D. \( 1+n_{2}^{2}=n_{1}^{2}+n_{3}^{2} \)
Subject: Physics
A certain region of a soap bubble reflects red light of vacuum wavelength \( \lambda=650 n m . \) What is the minimum
thickness that this region of the soap bubble could have? Take the index of
reflection of the soap film to be 1.41
A. \( 1.2 \times 10^{-7} \mathrm{m} \)
B. \( 650 \times 10^{-9} \mathrm{m} \)
c. \( 120 \times 10^{7} m \)
D. \( 650 \times 10^{5} \mathrm{m} \)
Subject: Physics
A ball is released from the top of a tower
of height h metres. It takes T seconds to reach the ground. What is the position
of the ball in \( T / 3 \) seconds?
A. \( h / 9 \) metres from the ground
B. \( 7 h / 9 m \) from the ground
c. \( 8 h / 9 \) metres from the ground
D. \( 17 h / 18 m \) from the ground
Subject: Physics
Q Type your question
paluic invitg in a suaigil line is shown in given figure. During the nterval \( O A, A B, B C \) and \( C D, \) the
acceleration of the particle is
CD \( \mathrm{BC} \) \( \begin{array}{cc}\mathrm{OA} & \mathrm{AB} \\ + & 0\end{array} \) \( + \) \( t \)
B \( \mathrm{CD} \) \( \begin{array}{ccc}\text { OA } & \text { AB } & \text { BC } \\ - & 0 & +\end{array} \) 0
\( \begin{array}{cccc}\text { OA } & \text { AB } & \text { BC } & \text { CD } \\ + & 0 & - & +\end{array} \)
D \( \begin{array}{cccc}\mathrm{OA} & \mathrm{AB} & \mathrm{BC} & \mathrm{CD} \\ - & 0 & - & 0\end{array} \)
Subject: Physics
A ball is dropped from height hon the ground. If the coefficient of restitution is e, the height to which the ball goes up after it rebounds for the nth time is :
A \( \cdot \frac{h}{e^{2 n}} \)
B. \( \frac{e^{2 n}}{h} \)
\( c \cdot h e^{2 n} \)
D. \( h e^{n} \)
Subject: Chemistry
Which of the following molecule/molecules will be have zero
dipole moment?
\( \boldsymbol{H}_{2} \boldsymbol{O}, \boldsymbol{C} \boldsymbol{O}_{2}, \boldsymbol{C} \boldsymbol{C l}_{4}, \boldsymbol{C H} \boldsymbol{C l}_{3}, \boldsymbol{N} \boldsymbol{H}_{3}, \boldsymbol{B} \boldsymbol{F}_{3}, \boldsymbol{B} \)
Subject: Physics
The voltage in the primary and the
secondary coils of a step up transformer are \( 200 \mathrm{V} \) and \( 4 \mathrm{KV} \) respectively. If the
current in the primary is 1 ampere then the current in the secondary coil will be
\( A \cdot 50 \mathrm{m} \) A
B. 500 \( \mathrm{m} \) A
\( c \cdot 5 A \)
\( D \cdot 5 m A \)
Subject: Biology
Amount of \( \mathrm{CO}_{2} \) fixed annually is about
A \( \cdot 70 \times 10^{11} \) kg
B . \( 70 \times 10^{11} \mathrm{kg} \)
c. \( 70 \times 10^{13} \mathrm{kg} \)
D. \( 70 \times 10^{13} \mathrm{g} \)
Subject: Maths
Statement-1: the two vectors \( a=1 i+ \)
\( \boldsymbol{P j}+\mathbf{2 k} \) and \( \boldsymbol{b}=\boldsymbol{3} \boldsymbol{i}+\boldsymbol{3} \boldsymbol{j}+\boldsymbol{Q} \boldsymbol{k} \) are
parallel only if \( \boldsymbol{P}=\mathbf{1} \) and \( \boldsymbol{Q}+\boldsymbol{6} \)
Statement-2: if two vectors \( \boldsymbol{a}=\boldsymbol{a}_{1} \boldsymbol{i}+ \)
\( a_{2} j+a_{3} k \) and \( b=b_{1} i+b_{2} j+b_{3} k \) are
parallel then \( \frac{\boldsymbol{a}_{1}}{\boldsymbol{a}_{2}}=\frac{\boldsymbol{b}_{1}}{\boldsymbol{b}_{2}} \)
A. Both statements are true and Statement-2 is correct explanation of Statement- -
B. Both statements are true and Statement-2 is not correct explanation of Statement-
c. statement-2 is false but other is true
D. Statement-1 is false but other is true
Subject: Chemistry
Which of the following solutions is the product of the neutralization reaction between \( 10 \mathrm{ml} 0.2 M K O H \) and \( 10 m l \)
\( \mathbf{0 . 2} M \mathbf{H I} \)
A. \( 0.1 M \) KI\( _{3} \).
B. \( 0.1 M K I \)
c. \( 0.2 M K I \)
D. \( 0.4 M K I \)
ह. \( 0.4 M \) НОН
Subject: Biology
What will happen if the secretion of parietal cells of gastric glands is
blocked with an inhibitor?
A. In the absence of HCI secretion, inactive pepsinogen is not converted into the active enzyme pepsin.
B. Enterokinase will not be released from the duodena mucosa and so trypsinogen is not converted to trypsin.
c. Gastric juice will be deficient in chymosin
D. Gastric juice will be deficient In pepsinogen
Subject: Maths
The area bounded by the curves \( y= \)
\( -\sqrt{-x} \) and \( x=-\sqrt{-y} \) were \( x, y \leq 0 \)
This question has multiple correct options
A. Can not be determined
B. is \( 1 / 3 \)
\( c \cdot \) is \( 2 / 3 \)
D. is same as that of the figure by the curves \( y= \) \( \sqrt{-x} ; x \leq 0 \) and \( x=\sqrt{-y} ; y \leq 0 \)
Subject: Physics
The transition from the state \( n=4 \) to
\( \boldsymbol{n}=\mathbf{3} \) in a hydrogen like atom results in
ultraviolet radiation. Infrared radiation
will be obtained in the transition from
\( \mathbf{A} \cdot 2 \rightarrow 1 \)
B . \( 3 \rightarrow 2 \)
c. \( 4 \rightarrow 2 \)
D. \( 5 \rightarrow 4 \)
Subject: Chemistry
\( \frac{N}{10} \) acetic acid was titrated with \( \frac{N}{10} \) NaOH.When \( 25 \%, 50 \% \) and \( 75 \% \) of
titration is over then the pH of the
solution will be : \( \left[\mathbf{K}_{\boldsymbol{a}}=\mathbf{1 0}^{-\mathbf{5}}\right] \)
A \( .5+\log 1 / 3,5,5+\log 3 \)
B. \( 5+\log 3,4,5+\log 1 / 3 \)
c. \( 5-\log 1 / 3,5,5-\log 3 \)
D. \( 5-\log 1 / 3,4,5+\log 1 / 3 \)
Subject: Maths
\( f(x)=\frac{[x]+1}{\{x\}+1} \) for \( f:\left[0, \frac{5}{2}\right) \rightarrow \)
\( \left[\frac{1}{2}, 3\right), \) where [.] represent the integer
function and \( \{.\} \) represent the fraction
part of \( x \). then which of the following is
true?
A. \( f(x) \) is injective discontinuous function
B. \( f(x) \) is surjective non-differntiable function
\( \mathrm{c} \cdot \min \left(\lim _{x \rightarrow 1^{-}} f(x), \lim _{x \rightarrow 1^{+}} f(x)\right) \)
D. \( \max (x \text { values of point of discontinuity })=f(1) \)
Subject: Maths
Find the cost price / Selling price
\begin{tabular}{llll} 
cost price & Selling price & Profit & Loss \\
\hline (i) 7,282 & & 208 & \\
(ii) & 572 & 72 & \\
(iii) 9,684 & & & 684 \\
(iv) & 1,973 & 273 & \\
(v) & & & \\
6,76,000 & & & 18,500 \\
& & &
\end{tabular}
Subject: Maths
\( \sum_{r=1}^{50}\left[\frac{1}{49+r}-\frac{1}{2 r(2 r-1)}\right]= \)
A \( \cdot \frac{1}{50} \)
в. \( \frac{1}{99} \)
c. \( \frac{1}{100} \)
D. \( \frac{1}{101} \)
Subject: Chemistry
Which one of the following does not
contains electrons in \( 4 s \) subshells?
Given that : Atomic numbers: \( \boldsymbol{T} \boldsymbol{i}= \)
\( \mathbf{2 2}, \boldsymbol{V}=\mathbf{2 3}, \boldsymbol{C r}=\mathbf{2 4}, \boldsymbol{M} \boldsymbol{n}=\mathbf{2 5} \)
A \( \cdot T i \)
B. \( V^{\text {t }} \)
\( c \cdot C r^{+} \)
D. \( M n^{+} \)
Subject: Maths
A shopkeeper buys an article for Rs.
1,500 and spends \( 20 \% \) of the cost on its packing, transportation, etc. Then he marks the article at a certain price. If he sells the article for Rs. 2,452.50 including \( 9 \% \) Sales Tax on the price marked, find his profit as per cent.
A . \( 13 \% \)
B. \( 18 \% \)
\( c .25 \% \)
D. \( 30 \% \)
Subject: Maths
If \( \tan \theta=\frac{1}{2} \) and \( \tan \phi=\frac{1}{3}, \) then the
value of \( \boldsymbol{\theta}+\boldsymbol{\phi} \) is
A \( \cdot \frac{\pi}{6} \)
в. \( \pi \)
c. \( \frac{\pi}{4} \)
D.
Subject: Chemistry
Calculate the \( \% \) s-character in the lone
pair electron of \( N H_{3}, \) where the
percentage s-character of bond pair is \( 22 \% \) in each \( N-H \) bond
A . \( 60 \% \)
B. 25\%
c. \( 44 \% \)
D. \( 34 \% \)
Subject: Chemistry
The conductivity of N/10 KCl solution at
\( 20^{\circ} \mathrm{C} \) is \( 0.0212 \mathrm{Scm}^{-1} \) and the
resistance of cell containing this
solution at \( 20^{\circ} C \) is 55 ohm. The cell
constant is:
A \( .2 .173 \mathrm{cm}^{-1} \)
B. \( 1.166 \mathrm{cm}^{-1} \)
c. \( 4.616 \mathrm{cm}^{-1} \)
D. \( 3.324 c m^{-1} \)
Subject: Physics
Assertion
Pascal's law is the working principle of
hydraulic lift.
Reason
Pressure \( =\frac{\text { Thrust }}{\text { Area }} \)
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
Calculate the molar solubility of zinc tetrathiocyanato-N-mercurate (II) if its \( \boldsymbol{K}_{\boldsymbol{S P}}=\boldsymbol{2} \cdot \boldsymbol{2} \times 10^{-7} \)
A. 0.00380
B. 0.000469
c. 0.0095
D. 0.0183
Subject: Maths
If \( I=\int \frac{(x+1)^{2}}{\sqrt{x^{2}+1}} d x, \) then 2 l equals
A \( \cdot(x+4) \sqrt{x^{2}+1}+\log (x+\sqrt{x^{2}+1})+C \)
B. \( x \sqrt{x^{2}+1}+2 \log (x+\sqrt{x^{2}+1})+C \)
c. \( x \sqrt{x^{2}+1}+\log (x+\sqrt{x^{2}+1})+C \)
D. \( (x-3) \sqrt{x^{2}+1}+\log (x+\sqrt{x^{2}+1})+C \)
Subject: Chemistry
Assertion
Two electrons in Helium are placed in only one shell while three electrons in
Lithium occupy two shells.
Reason
An orbit can have maximum \( 2 n^{2} \) of
electron so first orbital can have two
electron only.
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
II the ngurt, and
\( \operatorname{masses} m_{1} \) and \( m_{2}\left(m_{1}>m_{2}\right) . m_{1} \) has
a downward acceleration \( a \). The pulley \( P \)
has a radius \( r, \) and some mass. The
string does not slip on the pulley. Then which of the following statement(s) is/are true?
This question has multiple correct options
A. The two sections of the string have unequal tensions.
B. The two blocks have accelerations of equal magnitude.
C . The angular acceleration of P is \( \frac{a}{r} \)
D. \( a<\left(\frac{m_{1}-m_{2}}{m_{1}+m_{2}}\right) g \)
Subject: Maths
\( \mathbf{f} \boldsymbol{A}=\left[\begin{array}{lll}\boldsymbol{i} & \boldsymbol{0} & \boldsymbol{0} \\ \boldsymbol{0} & \boldsymbol{i} & \boldsymbol{0} \\ \boldsymbol{0} & \boldsymbol{0} & \boldsymbol{i}\end{array}\right] \) then \( \boldsymbol{n} \in \boldsymbol{N}, \boldsymbol{A}^{4 n+1}= \)
Subject: Chemistry
Which of the following reactions correctly represent(s) the preparation of
\( M g C O_{3} ? \)
This question has multiple correct options
\( \mathbf{A} \cdot M g\left(H C O_{3}\right)_{2} \stackrel{\text {heat}}{\rightarrow} M g C O_{3}+H_{2} O+C O_{2} \)
B. \( M g\left(H C O_{3}\right)_{2}+M g O \rightarrow 2 M g C O_{3}+H_{2} O \)
\( \mathbf{c} \cdot M g S O_{4}+2 N a H C O_{3} \rightarrow M g C O_{3}+N a_{2} S O_{4}+ \)
\( H_{2} O+C O_{2} \)
D. None of these
Subject: Chemistry
In a buffer solution containing an
equal concentration of \( \mathrm{B}^{-} \) and \( \mathrm{HB} \), the \( \mathrm{K} \)
\( b \) for \( \mathrm{B}^{-} \) is \( 10^{-10} . \) The \( \mathrm{pH} \) of the buffer
solution is:
A . 10
B. 7
\( c \cdot 6 \)
D. 4
Subject: Maths
If \( f(x) \) is continuous in [0,1] and \( f\left(\frac{1}{3}\right)=1 \) then \( \lim _{n \rightarrow \infty} f\left(\frac{n}{\sqrt{9 n^{2}+1}}\right) \) is
\( \mathbf{A} \cdot \mathbf{1} \)
B.
c. \( \frac{1}{3} \)
D. none of these
Subject: Physics
The horizontal component of the earth's magnetic field at a place is \( 3 \times 10^{-4} T \)
and the dip is \( \theta=\tan ^{-1}(4 / 3) . \) A metal
rod of length \( 0.25 \mathrm{m} \) placed in the north south position is moved at a constant speed of \( 10 \mathrm{cm} / \mathrm{s} \) towards the east. The
e.m.f induced in the rod will be:
A. zero
B. \( 1 \mathrm{mV} \)
\( c \cdot 5 m v \)
D. 10 mv
Subject: Chemistry
There are following extraction process
of silver but not:
A. as a side product in electrolytic refining of copper
B. Parkes process in which \( Z n \) is used to extract silver by solvent extraction from molten lead
C. by reaction of silver sulphide with \( K C N \) and then the reaction of a soluble complex with \( Z n \)
D. by heating \( N a\left[A g(C N)_{2}\right] \)
Subject: Physics
Assertion
Basic difference between an electric
line and magnetic line of force is that former is discontinuous and the later is
continuous or endless.
Reason
No electric lines of force exist inside a
charged body but magnetic lines do
exist inside a magnet.
A. Both Assertion and Reason are correct and Reason is the correct explanation of Assertion
B. Both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion
C. Assertion is correct but Reason is incorrect.
D. Assertion is incorrect but Reason is correct.
Subject: Maths
Which of the following form the three angles of a triangle.
\( \boldsymbol{a})\left\{\boldsymbol{9} \boldsymbol{0}^{\boldsymbol{o}}, \boldsymbol{3} \boldsymbol{0}^{\boldsymbol{o}}, \boldsymbol{5} \boldsymbol{0}^{\boldsymbol{o}}\right\} \)
\( b)\left\{40^{\circ}, 40^{\circ}, 100^{\circ}\right\} \)
(5)\( \left\{50^{\circ}, 60^{\circ}, 70^{\circ}\right\} \)
\( \boldsymbol{d})\left\{20^{\circ}, 30^{\circ}, 40^{\circ}\right\} \)
A \( . d \) and \( c \)
B. \( b \) and \( c \)
c. \( a \) and \( c \)
D. \( a \) and \( d \)
Subject: Physics
Assertion
When a person walks on a rough surface, the frictional force exerted by surface on the person is opposite to the
direction of his motion.
Reason
It is the force exerted by the road on the
person that causes the motion.
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
Two protons move parallel to each other,
keeping distance r between them, both moving with same velocity \( \overrightarrow{\mathrm{v}} \). Then the ratio of the electric and magnetic force of interaction between them is:
(c - Velocity of light)
A \( \cdot \mathrm{c}^{2} / \mathrm{v}^{2} \)
B \( \cdot 2 c^{2} / v^{2} \)
c. \( c^{2} / 2 v^{2} \)
D. none
Subject: Chemistry
Which of the following options is correct regarding spontaneity of a process occurring on a system in which only pressure-volume? work is involved and S, \( G, C I, H, V, \) and \( P \) have usual meaning as in thermodynamics?
A \( \cdot(d G)_{U, V}<0,(d S)_{T, V}>0 \)
B . \( (d H) s, v<0,(d G)_{T, P}<0 \)
c. \( (d U)_{s, V}<0,(d G)_{T, V}<0 \)
D \( \cdot(d S)_{H, P}>0,(d G)_{T, P}<0 \)
Subject: Physics
A circuit operating at \( \frac{360}{2 \pi} \mathrm{Hz} \Omega \) contains a \( 1 \mathrm{F} \mu \) capacitor and a 20 resistor. The inductor must be added in
series to make the phase angle for the circuit zero is
A . 7.7
B. 10
c. \( 3.5 \mathrm{H} \)
D. 15 H
Subject: Chemistry
If \( F e^{3+}+y^{4-} \rightleftharpoons F e Y^{\ominus} ; K_{f}=1.3 \times \)
\( 10^{25} \)
\( F e^{3+}+Y^{4-} \rightleftharpoons F e Y^{2-} ; K_{f}=2.1 \times 10^{14} \)
And \( F e^{3+}+e^{-} \rightleftharpoons F e^{2+} ; E^{\ominus}=+0.77 V \)
\( \boldsymbol{E}^{\ominus} \) for \( \boldsymbol{F} \boldsymbol{e} \boldsymbol{Y}^{\ominus}+\boldsymbol{e}^{-} \rightarrow \boldsymbol{F} \boldsymbol{e} \boldsymbol{Y}^{2-} \)
A . 0.13 v
B. \( 0.26 \mathrm{v} \)
c. \( 1.2 v \)
D. 1.6
Subject: Physics
Two kg of a monoatomic gas is at a pressure of \( 4 \times 10^{4} N / m^{2} . \) The density
of the gas is \( 8 k g / m^{3} . \) What is the order
of energy of the gas due to its thermal motion?
A \( \cdot 10^{3} J \)
\( J \)
В. \( 10^{5} J \)
\( c \cdot 10^{6} J \)
D. \( 10^{4} J \)
Subject: Chemistry
Which of the following equations indicates the oxidizing property of
\( \boldsymbol{H}_{2} \boldsymbol{S} \boldsymbol{O}_{4} ? \)
A. \( H_{2} S O_{4} \rightarrow S O_{3}+H_{2} O \)
B. \( H_{2} S O_{4} \rightarrow H_{2} S O_{3}+H_{2} O \)
c. \( H_{2} S O_{4} \rightarrow S O_{2}+H_{2} O+[O] \)
D. \( H_{2} S O_{4} \rightarrow S O_{3}+2[H] \)
Subject: Chemistry
Which product will obtained in the
following reaction?
Reaction: \( \boldsymbol{P}_{4_{(a)}}+\mathbf{3} \boldsymbol{N a O H}_{(a q)}+ \)
\( \mathbf{3} \boldsymbol{H}_{2} \boldsymbol{O}_{(l)} \longrightarrow \)
\( \mathbf{A} \cdot P H_{3_{(a)}}+3 N a_{2} H P O_{2_{(a)}} \)
B. \( P H_{3_{(a)}}+3 N a H_{2} P O_{2_{l a q}} \)
C. \( 2 P H_{3_{(l)}}+3 N a_{2} H P O_{2_{l a}} \)
D. \( 2 P H_{3_{(l)}}+3 N a H_{2} P O_{2_{l a}} \)
Subject: Chemistry
For the reaction \( N_{2}(g)+3 H_{2}(g) \rightarrow \)
\( 2 N H_{3}(g), \) under certain conditions of
temperature and partial pressure of the
reactants, the rate of formation of \( \boldsymbol{N} \boldsymbol{H}_{3} \)
is \( 1.0 \times 10^{-4} \) mollit \( ^{-1} h^{-1} \). The rate of
conversion of \( \boldsymbol{H}_{2} \) under the same
conditions is:
A \( \cdot 6.7 \times 10^{-4} \) mollit \( ^{-1} h^{-1} \)
B. \( 3.3 \times 10^{-3} \) mollit \( ^{-1} h^{-1} \)
c. \( 1.5 \times 10^{-4} \) mollit \( ^{-1} h^{-1} \)
D. \( 0.5 \times 10^{-4} \) mollit \( ^{-1} h^{-1} \)
Subject: Physics
An inductor \( 10 \Omega / 60^{\circ} \) is connected to a
\( 5 \Omega \) resistance in series. Find net
impedance.
A . \( 15 \Omega \)
B. \( 12 \Omega \)
c. \( 13.2 \Omega \)
D. \( 18 \Omega \)
Subject: Physics
Assertion
Critical angle of light passing from glass to air is minimum for violet color.
Reason

The wavelength of blue light is greatest to the light of other colors.
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