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True multicellularity occurs only in
A. Animals
B. Eukaryotes
c. Plants and animals
D. Plants, animals and protists
E. Plants, animals and fungi | 0 | Biology |
Which of the following are true for the first order reaction?
This question has multiple correct options
A \( \cdot t_{3 / 4}=2 t_{1 / 2} \)
B . \( t_{15 / 16}=4 t_{1 / 2} \)
C \( \cdot t_{15 / 16}=3 t_{3 / 4} \)
D. \( t_{7 / 8}=2 t_{3 / 4} \) | 1 | Chemistry |
Any heavenly body having light of its own is called a
A. nebulae
B. star
c. comet
D. meteorite | 3 | Physics |
On passing one faraday of electricity through a dilute solution of an acid, the
volume of hydrogen obtained at NTP
is
A. \( 22400 m L \)
B. \( 1120 m L \)
c. \( 2240 m L \)
D. \( 11200 m L \) | 1 | Chemistry |
Sea water contains
oxygen which is utilized by plants and animals for respiration.
A . pure
B. dissolved
c. unutilized
D. free | 1 | Chemistry |
Two angles of triangle \( A B C \) are \( 85^{\circ} \) and
\( 65^{\circ} \) while the two angles of another
triangle DEF are \( 30^{\circ} \) and \( 65^{\circ} . \) Which of the statements is correct?
A. \( \triangle \) ABC is similar to \( \triangle \) DEF
B. \( \triangle \) ABC is congurent to \( \triangle \) DEF
c. \( \triangle \) ABC is equal to \( \triangle \) DEF
D. None of these | 2 | Maths |
Bubble gum contains
A. thiokol rubber
B. styrene - butadiene rubber
C. isobutylen - isoprene rubber
D. acrylonitrile - butadiene rubber | 1 | Chemistry |
In each of the following two polynomials
find the value of \( a, \) if \( x+a \) is a factor.
\( x^{4}-a^{2} x^{2}+3 x-a \) | 2 | Maths |
For the equilibrium, \( \boldsymbol{H}_{2}+\boldsymbol{I}_{2} \leftrightharpoons \mathbf{2 H} \boldsymbol{I} \)
which of the following will effect the equilibrium constant?
A. Pressure change
B. Concentration change
c. catalyst
D. Temperature change | 1 | Chemistry |
Find the value of \( k \) so that the line \( 2 x- \)
\( k y-7=0 \) may be parallel to \( 3 x+ \)
\( 4 y+7=0 \) | 2 | Maths |
Robin wants to shove rubber pipe up a plastic tap. The problem is that the pipe's diameter is smaller than that
required to secure a tight fit. So Robin switches on a half-dryer on and pointed it towards the pipe. He found that now the pipe fitted in easily. Why is this so?
A. The pipe expanded due to the hot air, and then contracted back again
B. the tap got deformed because of the hot air
c. The hot air caused adhesion between rubber and plastic.
D. none of the above | 3 | Physics |
The ratio of the peak current through the capacitor and supply is known-as:
A. Resonance current
B. Dynamic resistance
c. Q-factor
D. None of the above | 3 | Physics |
Starch is stored in
A. Chromoplasts
B. Amyloplasts
c. chloroplasts
D. Both B and C | 0 | Biology |
Subtract the following with the help of
numberline:
\( (-2)-7 \) | 2 | Maths |
Which of the following undergoes hydrolysis very easily?
A \( \cdot \mathrm{NCl}_{3} \)
в. PCls
c. \( \mathrm{AsCl}_{3} \)
D. BiCla | 1 | Chemistry |
Which is multiplied by temperature in the equation which calculates free
energy?
A. Positive \( \Delta H \)
B. Negative \( \Delta H \)
c. Positive \( \Delta G \)
D. Negative \( \Delta G \)
E. Positive \( \Delta S \) | 1 | Chemistry |
State the properties and uses of a Junction Diode. | 3 | Physics |
Respiratory rate in new born baby is
A. Equal to an adult
B. Less than an adult
c. More than an adult
D. None of the above | 0 | Biology |
When the body of the animal can be divided into identical halves in only one
plane then it is termed as
A. Asymmetry
B. Bilateral symmetry
C. Radial symmetry
D. Biradial symmetry | 0 | Biology |
What type of placentation is seen in tomato and gurhal?
A. Axile
B. Free central and axile
c. Axile and marginal
D. Marginal basal | 0 | Biology |
An AP consists of 50 terms of which 3 rd
term is 12 and the last term is \( 106 . \) Find
the 29 th term. | 2 | Maths |
If the given planes \( a x+b y+c z+d= \)
0 and \( a x+b y+c z+d=0 \) be
mutually perpendicular, then
A \( \cdot \frac{a}{a}=\frac{b}{b}=\frac{c}{c} \)
В \( \cdot \frac{a}{a}+\frac{b}{b}+\frac{c}{c}=0 \)
c. \( a a+b b+c c+d d=0 \)
D. \( a a+b b+c c=0 \) | 2 | Maths |
Lead in the atmosphere can cause
A. Brain damage
B. Breathlessness
c. Itching eyes
D. Respiratory ailments | 0 | Biology |
The digestion in amoeba can be defined
as
A. Intracellular
B. Extracellular
c. secretory
D. Both A and B | 0 | Biology |
Deduce the expression for the the equivalent resistance of three resistors
connected in Parallel. | 3 | Physics |
A voltmeter of reading up to \( 1000 m V \) is calibrated by a potentiometer. An emf of \( 1.08 V \) is balanced across \( 5.4 m \) length
of the wire. When voltmeter reading is \( 0.9 V, \) the balancing length is \( 4.55 m \)
The error in the voltmeter reading is:
A. -0.01mV
B. 0.5 mv
c. \( 0.25 \mathrm{mv} \)
D. No error | 3 | Physics |
A stone is thrown in a vertically upward
direction with a velocity of \( 5 m s^{-1} . \) If the acceleration of the stone during its motion is \( 10 m s^{-2} \) in the downward
direction, what will be the height attained by the stone and how much time will it take to reach there? | 3 | Physics |
\( \boldsymbol{f}: \boldsymbol{R} \longrightarrow \boldsymbol{R} \operatorname{are} \boldsymbol{g}: \boldsymbol{R} \longrightarrow \boldsymbol{R} \) are defined
by \( f(x)=2 x+3 \) and \( g(x)=x^{2}+7 \)
then the values of \( x \) for which \( f[g(x)]= \)
25 are
\( A \cdot \pm 1 \)
в. ±2
\( c .\pm 3 \)
\( \mathrm{D} \cdot \pm 4 \) | 2 | Maths |
According to figure, find the values of
angles \( x, y \) and \( z \) | 2 | Maths |
What causes the global warming?
A. Burning of fossil fuels
B. Deforestation
c. Industrialization
D. All of the above | 1 | Chemistry |
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. \( \frac{d\left(v^{2}\right)}{d t} \)
\( \frac{d\left(\frac{\vec{v}}{\sqrt{\mid 1}}\right)}{d t} \) | 3 | Physics |
Explain the relationship between CFCs and ozone in the stratosphere. | 0 | Biology |
Give the main postulates of Bohr's model of an atom. | 3 | Physics |
In the energy band diagram of a
material shown below, the open circles and filled circles denote holes and
electrons respectively. The material is:
A. an n-type semiconductor
B. a p-type semiconductor
\( c . \) an insulator
D. a meta | 3 | Physics |
The motion of the arm of a fast bowler
while bowling is an example of nonuniform circular motion.
State whether given statement is True/False?
A. True
B. False | 3 | Physics |
When an electron in hydrogen atom jumps from the excited state to the ground state, how would the de-Broglie wavelength associate with the electron
change? Justify your answer | 3 | Physics |
Estimate the lowering of vapour pressure due to the solute (glucose) in
a \( 1.0 \mathrm{M} \) aqueous solution at \( 100^{\circ} \mathrm{C} \)
A . 10 torr
B. 18 torr
c. 13.45 torr
D. 24 torr | 1 | Chemistry |
Give chemical equations of the
following conversions:
(i) Diethyl ether from Ethanol
(ii) Ethanol from Diethyl ether
(iii) Ethyl acetate from Ethanol
(iv) Ethanol from Glucose | 1 | Chemistry |
Two vectors \( \vec{A} \) and \( \vec{B} \) of magnitude 2
units and 1 unit, respectively are directed along the \( x \) -axis and \( y \) axis. Their resultant \( \vec{A}+\vec{B} \) is directed
along the line:
A. \( y-2 x=0 \)
в. \( 2 y-x=0 \)
c. \( y+x=0 \)
D. \( y-x=0 \) | 2 | Maths |
toppr
Q Type your question
\( (\mathbf{E}) \)
\( A \)
\( B \)
\( c \)
\( D \) | 1 | Chemistry |
The value of relative permittivity of air
is
A \( \cdot 8.854 \times 10^{-12} C^{2} N^{-1} m^{-2} \)
B. \( 9 \times 10^{9} C^{2} N^{-1} m^{-2} \)
c. 1
D. \( 8.854 \times 10^{12} \) | 3 | Physics |
A stress \( 10^{7} \) Pa produces a strain of \( 4 x \)
\( 10^{-3} . \) The energy stored per unit volume
of the body \( \left(\operatorname{in} \mathrm{J} . \mathrm{m}^{-3}\right) \) is
\( A \cdot 2 \times 10^{3} \)
B. \( 2 \times 10^{4} \)
c. \( 2.5 \times 10^{10} \)
D. \( 0.8 \times 10^{4} \) | 3 | Physics |
The self-inductance of an air core
solenoid of 100 turns is 1 m \( H \). The self-
inductance of another Solenoid of 50
turns (with the same length and crosssectional area) with a core having relative permeability 500 is
A . \( 125 \mathrm{mH} \)
B. 24 mH
c. \( 60 \mathrm{mH} \)
D. 30 mH
E. \( 45 \mathrm{mH} \) | 3 | Physics |
Write a chemical equation for burning
of lanthanoids \( (\text { ln }) \) in oxygen. | 1 | Chemistry |
The histogram shows that the level of
diabetic (in mg per dl) of 105
children. How many children have a leve
of diabetic between \( 60-80 \)
A . 20
B. 15
\( c .25 \)
D. 35 | 2 | Maths |
Product (s) of \( Z- \)scheme which is/are
utilise in calvin cycle, is/are:
A. only \( A T P \)
B. \( A T P, N A D P H \) and \( O_{2} \)
c. \( A T P \) and \( N A D P H \)
D. only \( O_{2} \) | 0 | Biology |
A ball of mass \( 200 g \) is thrown with a
speed \( 20 m s^{-1} \). The ball strikes a bat
and rebounds along the same line at a
speed \( 40 m s^{-1} \) Variation of the
interaction force, as long as the ball remains in contact with the bat, is as
shown in Fig. Average force exerted by
the bat on the ball is:
\( .5000 N \)
\( N \)
в. 2000N
\begin{tabular}{l}
\( c .2500 N \) \\
\hline
\end{tabular}
D. \( 6000 N \) | 3 | Physics |
Perform the division \( \left(a^{4}-a^{3}+a^{2}-\right. \)
\( a+1) \div\left(a^{3}-2\right) \) | 2 | Maths |
If \( \cos ^{-1} \lambda+\cos ^{-1} \mu+\cos ^{-1} \gamma=3 \pi \)
then find the value of \( \lambda \mu+\mu \gamma+\gamma \lambda \)
A . 1
B . 2
\( c .3 \)
D. 4 | 2 | Maths |
A person drawn a card from a pack of 52 cards, replaces it \( \& \) shuffles the pack. He continues doing this till the draws a spade. The probability that he will fail exactly the first two times is
A \( \cdot \frac{1}{64} \)
в. \( \frac{9}{64} \)
c. \( \frac{36}{64} \)
D. \( \frac{60}{64} \) | 2 | Maths |
Senescence and death are essential in
the function of
A. Sieve tubes
B. Companion cells
c. Both A and B
D. xylem and sclerenchyma cells | 0 | Biology |
A cell of emf \( E \) and internal resistance \( r \)
is connected across a resistance \( r \). The
potential difference between the terminals of the cell must be
A. \( E \)
B. \( E / 2 \)
c. \( E / 4 \)
D. \( 3 E / 2 \) | 3 | Physics |
A rectangle polygon of \( n \) sides is
constructed. No. of ways 3 vertices be
selected so that no two vertices are
consecutive is
\( \mathbf{A} \cdot^{n} C_{3}-n(n-4) \)
B . \( ^{n} C_{3}-n-n(n-4) \)
C. \( ^{n} C_{3}+n-n(n-4) \)
D. \( ^{n} C_{3}+n(n-4) \) | 2 | Maths |
Action of hydrogen iodide on anisole
gives:
A. phenol and iodomethane
B. iodobenzene and methanol
c. phenol and methanol
D. iodobenzene and iodomethane | 1 | Chemistry |
Complete the following reaction:
\( \mathrm{HC} \equiv \mathrm{CH}_{H_{2} S O_{4}}^{H g_{2}^{2+}}(\boldsymbol{A}) \stackrel{\mathcal{O}}{\rightarrow}(\boldsymbol{B}) \) | 1 | Chemistry |
The value of \( \frac{\cos \left(90^{\circ}-A\right)}{1+\sin \left(90^{\circ}-A\right)}+ \)
\( \frac{1+\sin \left(90^{\circ}-A\right)}{\cos \left(90^{\circ}-A\right)} \) is equal to:
A \( \frac{2}{\cos A} \)
в. \( \frac{2}{\sin A} \)
c. \( \frac{2}{\sec A} \)
D. \( \frac{2}{\operatorname{cosec} A} \) | 2 | Maths |
Calculate the average income of workers using direct method.
\begin{tabular}{|l|l|l|l|l|l|}
\hline Workers & 4 & 6 & 8 & 10 & 12 \\
\hline Weekly income & 300 & 500 & 700 & 800 & 900 \\
\hline
\end{tabular}
A. 10 rupees
B. 9 rupees
c. 8 rupees
D. 7 rupees | 2 | Maths |
Find the degree of each algebraic
expression \( \boldsymbol{p} \boldsymbol{q}+\boldsymbol{p}^{2} \boldsymbol{q}-\boldsymbol{p}^{2} \boldsymbol{q}^{2} \) | 2 | Maths |
What percent of Rs.150 is Rs.30?
A . 5\%
B. 20\%
c. 30\%
D. 45\% | 2 | Maths |
Assertion: In a cavity within a
conductor, the electric field is zero.
Reason: Charges in a conductor reside
only at its surface.
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. | 3 | Physics |
Which theory explains all the characteristics of light? | 3 | Physics |
Ribosomes are the site for
A. DNA replication
B. Transcription
c. Translation
D. Translocation
E . Repression | 0 | Biology |
Equal masses of oil and water are given equal amounts of heat. Then which of the following statement is true?
A. Temperature rise in oil is less than temperature rise in water.
B. Temperature rise in oil is more than temperature rise in water.
c. Temperature rise in oil is equal to the temperature rise in water
D. None of these. | 3 | Physics |
What compounds are used in reaction of ester preparation?
A. An organic acid and an aldehyde
B. An alcohol and an aldehyde
c. An acid and a ketone
D. Two alcohols
E. An alcohol and an organic acid | 1 | Chemistry |
Prove that the line \( 5 x-2 y-1=0 \) is
mid-parallel to the lines \( 5 x-2 y-9= \)
0 and \( 5 x-2 y+7=0 \) | 2 | Maths |
Why are some organic compounds purified by distillation at low pressure?
A. They have low boiling points
B. They have high boiling points
c. They are highly volatile
D. They dissociate before reaching their boiling points | 1 | Chemistry |
If the vectors \( \bar{a}=2 i+j-k \) and \( \bar{b}= \)
\( i+j+k, \) then find the angle between
its.
A \( \cdot \sin ^{-1} \frac{\sqrt{2}}{3} \)
B. \( \cos ^{-1} \frac{\sqrt{2}}{3} \)
c. \( \cos ^{-1} \frac{2}{\sqrt{3}} \)
D. \( \sin ^{-1} \frac{2}{\sqrt{3}} \) | 2 | Maths |
Which group of organisms possesses a protein rich layer called pellicle?
A. Chrysophytes
B. Euglenoids
c. Dinoflagellates
D. Slime moulds
E. Protozoans | 0 | Biology |
Pressures insides two soap bubbles are
1.01 and 1.02 atmospheres. Ratio
between their volumes is :-
A . 102:10
B . \( (102)^{3}:(101)^{3} \)
\( c \cdot 8: \)
D. 2: | 3 | Physics |
In an electric field, if an amino acid migrate towards cathode, the pH of solution is said to be
A. Less than PI
B. More than Pl
c. Equal to PI
D. | 1 | Chemistry |
Leaching is a process of :
A. reduction
B. concentration
C . refining
D. oxidation
E. none of these | 1 | Chemistry |
Compute \( 100 \times P(A \mid B), \) if \( P(B)=0.5 \)
and \( P(A \cap B)=0.32 \) | 2 | Maths |
Which structures are found in
mycoplasmas, spirochaetes and
rickettsias?
A. DNA
B. RNAA
c. Ribosomes
D. All of the above | 0 | Biology |
Which of the following graphs represents the correct variation of
capacitive reactance \( \boldsymbol{X}_{C} \) with
frequency \( \nu ? \)
\( A \)
B.
c.
D. | 3 | Physics |
\( C_{6} H_{5} N_{2} C l \stackrel{H B F_{4}}{\longrightarrow} X \frac{C u}{N a N O_{2}} Y \)
Find out \( Y \) in this reaction.
A \( \cdot C_{6} H_{5} N O_{2} \)
в. \( C_{6} H_{6} \)
c. \( C_{6} H_{5} N H_{2} \)
D. \( C_{6} H_{5} C l \) | 1 | Chemistry |
How is human male represented?
A. \( x x \)
B. xo
c. \( x y \)
D. YY | 0 | Biology |
Which of the following is an experimental observation that would support calling a compound "aromatic"?
A. A pungent odor.
B. Substitution reactions (as opposed to addition reactions) with \( B r_{2} \) and \( F e B r_{3} \)
C. A total of (2n+2) pi electrons anywhere in the molecule
D. A pale, purple color. | 1 | Chemistry |
A body of volume \( V \) and density \( \rho \) is initially submerged in a liquid of density \( \rho^{\prime} . \) If it lifted through a height \( h \) in the liquid, its potential energy will:
A . increase by \( h V\left(\rho-\rho^{\prime}\right) g \)
B. decrease by \( h V\left(\rho-\rho^{\prime}\right) g \)
C . increase by \( h V_{\rho g / \rho} \)
D. decrease by \( h V_{\rho g / \rho} \) | 3 | Physics |
Which statement BEST describes why
work is a path function
A. You finish at a different place
B. You start at a different place
C. The amount of work varies depending on which path you take to get to the destination
D. The amount of work is the same whichever path you take to get to the destination
E. Work is not a path function, it is a state function | 1 | Chemistry |
\( A B C \) is an equilateral triangle with \( O \) as its centre, \( \vec{F}_{1}, \vec{F}_{2} \) and \( \vec{F}_{3} \) represent three forces acting along the sides \( A B, B C \) and \( A C \) respectively. If the
total torque about \( O \) is zero then the
magnitude of \( \vec{F}_{3} \) is?
A \( \frac{F_{1}+F_{2}}{2} \)
\( \mathbf{B} \cdot 2\left(F_{1}+F_{2}\right) \)
\( c \cdot F_{1}+F_{2} \)
D. \( F_{1}-F_{2} \) | 3 | Physics |
In good-quality microscopes, lens combinations are used for the objective and eyepiece instead of single lenses.
A. True
B. False | 3 | Physics |
If velocity of a particle at a position os \( \operatorname{given} \operatorname{as} v^{2}=2 x, \) then the acceleration
of particle is [where \( x \) is metre and \( v \) in \( \mathrm{m} / \mathrm{s}] \)
A \( \cdot 4 m / s^{2} \)
в. \( 0.5 m / s^{2} \)
\( \mathbf{c} \cdot 2 m / s^{2} \)
D. \( 1 m / s^{2} \) | 3 | Physics |
The equation \( \sqrt{(x-2)^{2}+y^{2}}+ \)
\( \sqrt{(x+2)^{2}+y^{2}}=5 \) represents
A . a circle
B. ellipse
c. line segment
D. an empty set | 2 | Maths |
With a neat circuit diagram, explain the working of a single stage \( C E \) amplifier. Draw the frequency response curve and discuss the results. | 3 | Physics |
The reflected and refracted rays are
observed to be perpendicular to each other, when ray of light is incident at an
angle of \( 60^{\circ} \) on a transparent block. The refractive index of that block is:
\( A \cdot \frac{3}{2} \)
B. \( \frac{1}{2} \)
c. \( \frac{2}{\sqrt{3}} \)
D. \( \sqrt{3} \) | 3 | Physics |
Find the equation of the line having an
inclination \( 60^{\circ} \) with the positive direction of \( X \) axis and cut off an
intercept of 4 on the positive side of \( Y \)
axis. | 2 | Maths |
Evaluate the definite integral:
\( \int_{0}^{\pi / 2} \cos x d x \) | 2 | Maths |
Maximum number of teeth found in
placental mammals is
A . 32
B. 54
\( c \cdot 44 \)
D. 22 | 0 | Biology |
Solve:
\( 2.5 x-6+7.5 x-24=0 \) | 2 | Maths |
We consider the Thomson model of the
hydrogen atom in which the proton is distributed uniformly over a spherical volume of radius 0.25 angstrom. Applying the Bohr's condition in this model the ground state energy (in eV) of the electron will be close to :
A. \( -\frac{13.6}{4} \)
B . -13.6
c. \( -\frac{13.6}{2} \)
D. \( -2 \times 13.6 \) | 3 | Physics |
Tick the correct answer.
The major constituent of atmosphere by percent is
A. Nitrogen
B. Oxygen
c. Carbon dioxide
D. None of these | 0 | Biology |
What is half-life of a reaction? Derive
formula for finding out half-life from
first order rate reaction. | 1 | Chemistry |
if \( 1+x^{2}=\sqrt{3} x, \) then \( , \prod_{n=1}^{24}\left(x^{n}+\frac{1}{x^{n}}\right) \)
is equal to: | 2 | Maths |
Write name of any two green house
gases. | 0 | Biology |
The number of cycles an oscillator completes in each second is called its
A. Frequency
B. Velocity
c. Amplitude
D. Angular velocity | 3 | Physics |
Let a sequence be defined by \( a_{1}= \)
\( \mathbf{1}, \boldsymbol{a}_{\mathbf{2}}=\mathbf{1} \) and \( , \boldsymbol{a}_{\boldsymbol{n}}=\boldsymbol{a}_{\boldsymbol{n}-\mathbf{1}}+\boldsymbol{a}_{\boldsymbol{n}-\mathbf{2}} \) for al
\( \boldsymbol{n}>2 \)
find \( \frac{\boldsymbol{a}_{\boldsymbol{n}+1}}{\boldsymbol{a}_{\boldsymbol{n}}} \) for \( \boldsymbol{n}=\mathbf{1}, \boldsymbol{2}, \boldsymbol{3}, \boldsymbol{4} \) | 2 | Maths |
Which of the following acid is used as a dehydrating and drying agent?
A . Acetic acid
B. Hydrochloric acid
c. Nitric acid
D. Sulphuric acid | 1 | Chemistry |
The reaction/method that does not give an alkane is:
A. Catalytic hydrogenation of alkenes
B. Hydrolysis of alkylmagnesium bromide
c. Kolbe's electrolytic method
D. Dehydrohalogenation of an alkyl halide | 1 | Chemistry |
When ethyl bromide is heated with
silver nitrate the product obtained is:
A. ethyl nitrite
B. ethyl nitrate
c. nitropropane
D. none of the above | 1 | Chemistry |
The uncertainty in the position of an electron \( \left(\text { mass }=\mathbf{9 . 1} \times \mathbf{1 0}^{-\mathbf{2 8}} \mathbf{g}\right) \)
moving with a velocity of \( 3.0 \times \) \( 10^{4} c m^{-1} \) accurate up to \( 0.011 \%, \) will
be:
A . \( 1.92 \mathrm{cm} \)
B. 7.68 ст
c. \( 0.175 \mathrm{cm} \)
D. \( 3.84 \mathrm{cm} \) | 1 | Chemistry |
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