Chemistry
1. The number of protons, neutrons and electrons in $$_6^{13}$$C respectively are2. The masses of an electron, a proton and a neutron respectively will be n the ratio3. Match the following species with the correct number of electrons present in them.
.tg {border-collapse:collapse;border4. The correct order of electronegativity of carbon in various hybridisation states is5. Which of the following is not arranged in the correct sequence?6. Which of the following statement is incorrect?7. Bond order is an inverse measure of8. Which of the following molecule has the maximum dipole moment?9. Which compound among the following will
have a permanent dipole moment?
10. Which among the following statements is/are
incorrect regarding real gases?
(i) Their compressibility factor is never eq11. Which among the following species does not show disproportionation reaction?12. An alloy of metals X and Y weighs 12 g and
contains atoms X and Y in the ratio of 2 : 5.
The percentage of metal X in th13. For the reaction, $$\mathrm{H}_2 \mathrm{O}(l) \longrightarrow \mathrm{H}_2 \mathrm{O}(\mathrm{g})$$ at $$T=100^{\circ} 14. At $$60^{\circ} \mathrm{C}$$, dinitrogen tetroxide is dissociated. Find it's standard free energy change at this tempera15. The solubility of $$\operatorname{AgBr}(s)$$, having solubility product $$5 \times 10^{-10}$$ in $$0.2 \mathrm{~M} \math16. Le-Chatelier's principle is not applicable to17. Which of the following does not form double
salts?18. $$\mathrm{AlF}_3$$ is soluble in HF only in the presence of KF due to formation of19. What would be the product of following reaction?
$$\mathrm{SiCl}_4 \stackrel{\text { Excess of } \mathrm{H}_2 \mathrm{O}20. Which among the following is not a greenhouse gas?21. An organic compound of molecular formula
$$\mathrm{C_6H_6Br_2}$$ has six carbon atoms in a ring
system, two non-conjugat22. Using Kjeldahl’s method over 1g of a soil
sample, the ammonia evolved could neutralise
25 mL of 1 M H$$_2$$SO$$_4$$. The23. Which compound among the following is
most reactive towards electrophilic reagents?24. Which of the following is not explained by hyperconjugation?25. In the face centered unit cell, the lattice points are present at26. If the $$K_{\mathrm{H}}$$ values for $$\operatorname{Ar}(g), \mathrm{CO}_2(g), \mathrm{HCHO}(g)$$ and $$\mathrm{CH}_4(\m27. If 500 mL of CaCl$$_2$$ solution contains 3.01 $$\times$$ 10$$^{22}$$ chloride ions, molarity of the solution will be28. Which statement among the following is incorrect?29. For zero order reaction, a plot of $$t_{1 / 2}$$ versus
$$[A]_0$$ will be30. If hydrogen electrons dipped in two solutions
of pH = 3 and pH = 6 are connected by a salt
bridge, the emf of the result31. In an adsorption experiment, a graph between $$\log (x / m)$$ versus $$\log p$$ was found to be linear with a slope of $32. The correct order of sulphur-oxygen bond in $$\mathrm{SO}_3, \mathrm{~S}_2 \mathrm{O}_3^{2-}$$ and $$\mathrm{SO}_4^{2-}$33. Potassium cyanide is made alkaline with
NaOH and boiled with thiosulphate ions.
The solution is cooled and acidified wit34. Which among the following is coloured?35. Which of the following complexes formed by nickel is tetrahedral and paramagnetic?36. Vitamin-B$$_1$$ is37. Identify the product of the following reaction.
38. The correct order of acidic strength among the following is39. Identify (Z) in the following reaction.
$$\mathrm{C{H_3}COOH\buildrel {LiAl{H_4}} \over
\longrightarrow (X)\mathrel{\ma40. Identify the major product of the following reaction.
Mathematics
1. $$f(x)=\sin x+\cos x \cdot g(x)=x^2-1$$, then $$g(f(x))$$ is invertible if2. If $$f: z \rightarrow z$$ is defined by $$f(x)=x^9-11 x^8-2 x^7+22 x^6+x^4 -12 x^3+11 x^2+x-3, \forall x \in z$$, then $3. Let $$f(x)=x^3$$ and $$g(x)=3^x$$, then the quadratic equation whose roots are solutions of the equation $$(f \circ g)(x4. The trace of the matrix $$A=\left[\begin{array}{ccc}1 & -5 & 7 \\ 0 & 7 & 9 \\ 11 & 8 & 9\end{array}\right]$$ is5. If $$A, B$$ and $$C$$ are the angles of a triangle, then the system of equations
$$-x+y \cos C+z \cos B=0, x \cos C-y+z 6. If $$\left[\begin{array}{cc}1 & -\tan \theta \\ \tan \theta & 1\end{array}\right]\left[\begin{array}{cc}1 & \tan \theta 7. If $$z_1=2+3 i$$ and $$z_2=3+2 i$$, where $$i=\sqrt{-1}$$, then $$\left[\begin{array}{cc}z_1 & z_2 \\ -\bar{z}_2 & \bar{8. What is the value of $$\left|\begin{array}{ccc}a & b & c \\ a-b & b-c & c-a \\ b+c & c+a & a+b\end{array}\right|$$ ?9. The radius of the circle represented by $$(1+i)(1+3i)(1+7i)=x+iy$$ is $$(i=\sqrt{-1})$$.10. If $$1, \alpha_1, \alpha_2, \alpha_3$$ and $$\alpha_4$$ are the roots of $$z^5-1=0$$ and $$\omega$$ is a cube root of un11. If $$a > 0$$ and $$z=x+i y$$, then
$$\log _{\cos ^2 \theta}|z-a|>\log _{\cos ^2 \theta}|z-a i|,(\theta \in R)$$
implies12. If one root of the equation $$i x^2-2(i+1) x+(2-i)=0$$ is $$(2-i)$$, then the other root is13. If $$\alpha$$ and $$\beta$$ are the roots of the quadratic equation $$x^2+x+1=0$$, then the equation whose roots are $$\14. If $$2, 1$$ and $$1$$ are roots of the equation $$x^3-4 x^2+5 x-2=0$$, then the roots of $$\left(x+\frac{1}{3}\right)^3-15. If $$f(x)=2x^3+mx^2-13x+n$$ and 2, 3 are the roots of the equation $$f(x)=0$$, then the values of m and n are16. The value of $${ }^6 P_4+4 \cdot{ }^6 P_3$$ is17. The number of ways in which 3 boys and
2 girls can sit on a bench so that no two boys
are adjacent is18. In how many ways can 5 balls be placed in
4 tins if any number of balls can be placed in
any tin?19. Given, $$\frac{3 x-2}{(x+1)^2(x+3)}=\frac{A}{x+1} +\frac{B}{(x+1)^2}+\frac{C}{x+3}$$, then $$4 A+2 B+4 C$$ is equal to20. What is the value of $$\cos \left(22 \frac{1}{2}\right)^{\circ}$$ ?21. If $$\cos \theta=-\sqrt{\frac{3}{2}}$$ and $$\sin \alpha=\frac{-3}{5}$$, where '$$\theta$$' does not lie in the third qu22. If $$\tan \beta=\frac{\tan \alpha+\tan \gamma}{1+\tan \alpha \tan \gamma}$$, then $$\frac{\sin 2 \alpha+\sin 2 \gamma}{123. If $$\sin \left(\frac{\pi}{4} \cos \theta\right)=\cos \left(\frac{\pi}{4} \tan \theta\right)$$, then $$\theta$$ is equal24. If $$x=\sin \left(2 \tan ^{-1} 2\right), y=\cos \left(2 \tan ^{-1} 3\right)$$ and $$z=\sec \left(3 \tan ^{-1} 4\right)$$25. In $$\triangle A B C$$, medians $$A D$$ and $$B E$$ are drawn. If $$A D=4, \angle D A B=\frac{\pi}{6}$$ and $$\angle A B26. In a $$\triangle A B C, 2 \Delta^2=\frac{a^2 b^2 c^2}{a^2+b^2+c^2}$$, then the triangle is27. The sides of a triangle inscribed in a given circle subtend angles $$\alpha, \beta, \gamma$$ at the center. The minimum 28. The position vectors of the points $$A$$ and $$B$$ with respect to $$O$$ are $$2 \hat{\mathbf{i}}+2 \hat{\mathbf{j}}+\ha29. Let $$\mathbf{u}=2 \hat{\mathbf{i}}+3 \hat{\mathbf{j}}+\hat{\mathbf{k}}, \mathbf{v}=-3 \hat{\mathbf{i}}+2 \hat{\mathbf{j30. If the lines, $$\frac{x-3}{2}=\frac{y-2}{3}=\frac{z-1}{\lambda}$$ and $$\frac{x-2}{3}=\frac{y-3}{2}=\frac{z-2}{3}$$ are 31. If a = (1, 1, 0) and b = (1, 1, 1), then unit vector in the plane of a and b and perpendicular to a is32. The line passing through $$(1,1,-1)$$ and parallel to the vector $$\hat{\mathbf{i}}+2 \hat{\mathbf{j}}-\hat{\mathbf{k}}$33. Let $$\mathbf{a}=\hat{\mathbf{i}}$$ and $$\mathbf{b}=\hat{\mathbf{j}}$$, the point of intersection of the lines $$\mathb34. The mean deviation from the mean of the set
of observation $$-1,0,4$$ is35. Let an angle of a triangle is 60$$^\circ$$. If the variance of the angles of the triangle is 1014$$^\circ$$, then the ot36. One card is selected at random from 27 cards
numbered form 1 to 27. What is the
probability that the number on the card 37. Nine balls one drawn simultaneously from a bag containing 5 white and 7 black balls. The probability of drawing 3 white 38. The probabilities that $$A$$ and $$B$$ speak truth are $$\frac{4}{5}$$ and $$\frac{3}{4}$$ respectively. The probability39. The mean and variance of a binomial variable
X are 2 and 1 respectively. The probability
that X takes values greater tha40. For the random variable X with probability distribution is given by the table
.tg {border-collapse:collapse;border-spa41. The locus of a point, which is at a distance of 4 units from $$(3,-2)$$ in $$x y$$-plane is42. When the axes are rotated through an angle
45$$^\circ$$, the new coordinates of a point P are
(1, $$-$$1). The coordinat43. Find the equation of a straight line passing through $$(-5,6)$$ and cutting off equal intercepts on the coordinate axes.44. Line has slope $$m$$ and $$y$$-intercept 4 . The distance between the origin and the line is equal to45. The equation of the base of an equilateral triangle is $$x+y=2$$ and one vertex is $$(2,-1)$$, then the length of the si46. The equation of a straight line which passes through the point $$\left(a \cos ^3 \theta, a \sin ^3 \theta\right)$$ and p47. The acute angle between lines $$6 x^2+11 x y-10 y^2=0$$ is48. If the lines, joining the origin to the points of intersection of the curve $$2 x^2-2 x y+3 y^2+2 x-y-1=0$$ and the line49. The equation of bisector of the angle between the lines represented by $$3 x^2-5 x y+4 y^2=0$$ is50. If the bisectors of the pair of lines $$x^2-2 m x y-y^2=0$$ is represented by $$x^2-2 n x y-y^2=0$$, then51. Find the equation of the circle which passes through origin and cuts off the intercepts $$-$$2 and 3 over the $$X$$ and 52. The angle between the pair of tangents drawn from $$(1,1)$$ to the circle $$x^2+y^2+4 x+4 y-1=0$$ is53. If the circle $$x^2+y^2-4 x-8 y-5=0$$ intersects the line $$3 x-4 y-m=0$$ in two distinct points, then the number of int54. Let $$C$$ be the circle center $$(0,0)$$ and radius 3 units. The equation of the locus of the mid-points of the chords o55. The length of the common chord of the circles $$x^2+y^2+3x+5y+4=0$$ and $$x^2+y^2+5x+3y+4=0$$ is __________ units.56. Find the equation of the circle which passes through the point $$(1,2)$$ and the points of intersection of the circles $57. The coordinates of the focus of the parabola described parametrically by $$x=5t^2+2$$ and $$y=10t+4$$ (where t is a para58. If $$\tan \theta_1, \tan \theta_2=\frac{-a^2}{b^2}$$, then the chord joining 2 points $$\theta_1$$ and $$\theta_2$$ one 59. If one focus of a hyperbola is $$(3,0)$$, the equation of its directrix is $$4 x-3 y-3=0$$ and its eccentricity $$e=5 / 60. If the vertices of the triangles are (1, 2, 3), (2, 3, 1), (3, 1, 2) and if H, G, S and I respectively denote its orthoc61. A(2, 3, 4), B(4, 5, 7), C(2, $$-$$6, 3) and D(4, $$-$$4, k) are four points. If the line AB is parallel to CD, then k is62. If the direction cosines of two lines are $$\left( {{2 \over 3},{2 \over 3},{1 \over 3}} \right)$$ and $$\left( {{5 \ove63. $$\mathop {\lim }\limits_{n \to \infty } {{n{{(2n + 1)}^2}} \over {(n + 2)({n^2} + 3n - 1)}}$$ is equal to64. If the function $$f(x)$$, defined below, is continuous on the interval $$[0,8]$$, then $$f(x)=\left\{\begin{array}{cc}x^65. If $$f(x)$$, defined below, is continuous at $$x=4$$, then
$$f(x) = \left\{ {\matrix{
{{{x - 4} \over {|x - 4|}} + a}66. If $$f(x)=2x^2+3x-5$$, then the value of $$f'(0)+3f'(-1)$$ is equal to67. If $$y=\left(1+\frac{1}{x}\right)\left(1+\frac{2}{x}\right)\left(1+\frac{3}{x}\right) \ldots\left(1+\frac{n}{x}\right)$$68. $$\frac{d}{d x}\left\{\sin ^2\left(\cot ^{-1} \sqrt{\frac{1+x}{1-x}}\right)\right\}$$ is equal to69. If $$y=\tan ^{-1}\left\{\frac{a x-b}{b x+a}\right\}$$, then $$y^{\prime}$$ is equal to70. If $$y=4 x-6$$ is a tangent to the curve $$y^2=a x^4+b$$ at $$(3,6)$$, then the values of $$a$$ and $$b$$ are71. Find the positive value of $$a$$ for which the equality $$2 \alpha+\beta=8$$ holds, where $$\alpha$$ and $$\beta$$ are t72. If the radius of a sphere is measured as 9 cm
with an error of 0.03 cm, then find the
approximate error in calculating i73. The diameter and altitude of a right circular
cone, at a certain instant, were found to be
10 cm and 20 cm respectively.74. $$\int \frac{\sin \alpha}{\sqrt{1+\cos \alpha}} d \alpha$$ is equal to75. If $$\int \frac{\cos 4 x+1}{\cot x-\tan x}=k \cos 4 x+C$$, then $$k$$ is equal to76. If $$\int\left[\cos (x) \cdot \frac{d}{d x}(\operatorname{cosec}(x)] d x=f(x)+g(x)+c\right.$$ then $$f(x) \cdot g(x)$$ i77. If $$\int \frac{(2 x+1)^6}{(3 x+2)^8} d x=P\left(\frac{2 x+1}{3 x+2}\right)^Q+R$$, then $$\frac{P}{Q}$$ is equal to
78. If $$\int_0^a {{{dx} \over {4 + {x^2}}} = {\pi \over 8}} $$, then the value of a is equal to79. $$\int_1^2 {{{{x^3} - 1} \over {{x^2}}}} $$ is equal to80. The solution of the differential equation $$2x\left(\frac{dy}{dx}\right)-y=4$$ represents a family of
Physics
1. The displacement of a particle starting from rest at $$t=0$$ is given by $$s=9 t^2-2 t^3$$. The time in seconds at which2. The range of a projectile is 100 m. Its kinetic
energy will be maximum after covering a
distance of3. Two cars A and B are moving with a velocity
of 30 km/h in the same direction. They are
separated by 10 km. The speed of 4. A book is lying on a table. What is the angle
between the normal reaction acting on the
book on the table and the weight5. A boy throws a cricket ball from the
boundary to the wicket keeper. If the
frictional force due to air $$(f_a )$$ cannot6. When a force F = 17 $$-$$ 2x + 6x$$^2$$N acts on a body of mass 2 kg and displaces it from x = 0 m to x = 8 m, the work 7. A rifle bullet loses $$\left(\frac{1}{25}\right)$$th of its velocity in passing through a plank. The least number of suc8. A uniform chain has a mass m and length $$l$$.
It is held on a frictionless table with
one-sixth of its length hanging o9. A sphere and a hollow cylinder without
slipping, roll down two separate inclined
planes A and B, respectively. They cove10. Four spheres each of diameter $$2 a$$ and mass $$m$$ are placed in a way that their centers lie on the four corners of a11. If an energy of 684 J is needed to increase the
speed of a flywheel from 180 rpm to
360 rpm, then find its moment of ine12. A particle executing simple harmonic motion
along a straight line with an amplitude A,
attains maximum potential energy 13. The bob of a simple pendulum is a spherical
hollow ball filled with water. A plugged hole
near the bottom of the oscilla14. The gravitational potential energy is maximum at15. A geostationary satellite is taken to a new
orbit, such that its distance from centre of
the earth is doubled. Then, fin16. A body of mass 10 kg is attached to a wire of 0.3 m length. The breaking stress is 4.8 $$\times$$ 10$$^7$$ Nm$$^{-2}$$. 17. A glass flask weighting 390 g, having internal
volume 500 cc just floats when half of it is
filled with water. Specific 18. Water does not wet an oily glass because19. Boiling water is changing into steam. The specific heat of boiling water is20. If the volume of a block of metal changes by $$0.12 \%$$ when heated through $$20^{\circ} \mathrm{C}$$, then find its co21. Isothermal process is the graph between22. For a monoatomic ideal gas is following the
cyclic process ABCA shown in the U versus p
plot, identify the incorrect opt23. The pressure of a gas is proportional to24. A string fixed at both ends vibrate in 5 loops
as shown in the figure. The total number of
nodes and anti-nodes respecti25. The position of the direct image obtained at
O, when a monochromatic beam of light is
passed through a plane transmissio26. What is the electric flux for Gaussian surface $$A$$ that encloses the charged particles in free space? [Given, $$q_1=-127. Two charges 8 $$\mu$$C each are placed at the corners A and B of an equilateral triangle of side 0.2 m in air. The elect28. A 60 $$\mu$$F parallel plate capacitor whose plates
are separated by 6 mm is charged to 250 V,
and then the charging sou29. Five current carrying conductors meet at a
point P. What is the magnitude and direction
of the current in the fifth cond30. A wire of length $$L$$ metre carrying a current $$I$$ ampere is bent in the form of a circle. Magnitude of its magnetic 31. What is the net force on the square coil?
32. A paramagnetic sample showing a net magnetisation of $$0.8 \mathrm{~A} \mathrm{~m}^{-1}$$, when placed in an external ma33. The induced emf cannot be produced by34. Assertion (A) When plane of coil is perpendicular to magnetic field, magnetic flux linked with the coil is minimum, but 35. A 20 V AC is applied to a circuit consisting of
a resistor and a coil with negligible
resistance. If the voltage across 36. The electric and the magnetic fields associated with an electromagnetic wave propagating along the $$z$$-axis, can be re37. The graph between the maximum speed $$(v_{max})$$ of a photoelectron and frequency $$(\nu)$$ of the incident radiation, 38. The angular momentum of the orbital
electron is integral multiple of39. Which of the following values is the correct order of nuclear density?40. The truth table given below corresponds to logic gate.
1
AP EAPCET 2021 - 20th August Morning Shift
MCQ (Single Correct Answer)
+1
-0
A paramagnetic sample showing a net magnetisation of $$0.8 \mathrm{~A} \mathrm{~m}^{-1}$$, when placed in an external magnetic field of strength $$0.8 \mathrm{~T}$$, at a temperature $$5 \mathrm{~K}$$. If the temperature is raised to $$20 \mathrm{~K}$$, then the magnetisation becomes
A
$$0.8 \mathrm{~A} \mathrm{~m}^{-1}$$
B
$$0.2 \mathrm{~A} \mathrm{~m}^{-1}$$
C
$$0.1 \mathrm{~A} \mathrm{~m}^{-1}$$
D
$$0.4 \mathrm{~A} \mathrm{~m}^{-1}$$
2
AP EAPCET 2021 - 20th August Morning Shift
MCQ (Single Correct Answer)
+1
-0
The induced emf cannot be produced by
A
moving a magnet near a circuit
B
moving a circuit near a magnet
C
changing the current in one circuit placed near the other
D
maintaining large but constant current in a circuit
3
AP EAPCET 2021 - 20th August Morning Shift
MCQ (Single Correct Answer)
+1
-0
Assertion (A) When plane of coil is perpendicular to magnetic field, magnetic flux linked with the coil is minimum, but induced emf is zero.
Reason (R) $$\phi=n A B \cos \theta$$ and $$e=\frac{d \phi}{d t}$$
A
Both $$A$$ and $$R$$ are true and $$R$$ is the correct explanation for $$A$$.
B
Both $$A$$ and $$R$$ are true but $$R$$ is not the correct explanation for $$A$$.
C
$$A$$ is true, $$R$$ is false.
D
$$A$$ is false, $$R$$ is true.
4
AP EAPCET 2021 - 20th August Morning Shift
MCQ (Single Correct Answer)
+1
-0
A 20 V AC is applied to a circuit consisting of a resistor and a coil with negligible resistance. If the voltage across the resistor is 12 V, the voltage across the coil is
A
16 V
B
10 V
C
8 V
D
6 V
Paper analysis
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80
Physics
40
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