Q1
MATHS
Unit 1: Sets Relations and Functions
Let $A = \{1, 2, 3, 4, 5, 6, 7\}$. Then the relation $R = \{(x, y) \in A \times A : x + y = 7\}$ is
- A. reflexive but neither symmetric nor transitive
- B. symmetric but neither reflexive nor transitive
- C. transitive but neither symmetric nor reflexive
- D. an equivalence relation
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Q2
MATHS
Unit 2: Complex Numbers and Quadratic Equations
Let $A = \left\{\theta \in (0, 2\pi) : \dfrac{1 + 2i\sin\theta}{1 - i\sin\theta}$ is purely imaginary\right\}$. Then the sum of the elements in $A$ is
- A. $2\pi$
- B. $3\pi$
- C. $4\pi$
- D. $\pi$
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Q3
MATHS
Unit 3: Matrices and Determinants
Let $S$ be the set of all values of $\theta \in [-\pi, \pi]$ for which the system of linear equations
$$x + y + \sqrt{3}\,z = 0$$
$$-x + (\tan\theta)y + \sqrt{7}\,z = 0$$
$$x + y + (\tan\theta)z = 0$$
has non-trivial solution. Then $\dfrac{120}{\pi} \sum_{\theta \in S} \theta$ is equal to
- A. 10
- B. 20
- C. 30
- D. 40
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Q4
MATHS
Unit 3: Matrices and Determinants
If $A = \begin{bmatrix}1 & 5\\ \lambda & 10\end{bmatrix}$, $A^{-1} = \alpha A + \beta I$ and $\alpha + \beta = -2$, then $4\alpha^2 + \beta^2 + \lambda^2$ is equal to:
- A. 10
- B. 12
- C. 14
- D. 19
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Q5
MATHS
Unit 4: Permutations and Combinations
If the number of words, with or without meaning, which can be made using all the letters of the word MATHEMATICS in which C and S do not come together, is $(6!)k$, then $k$ is equal to
- A. 945
- B. 1890
- C. 2835
- D. 5670
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Q6
CHEMISTRY
Unit 7: Redox Reactions and Electrochemistry
$25^{190} - 19^{190} - 8^{190} + 2^{190}$ is divisible by
- A. both 14 and 34
- B. 14 but not by 34
- C. 34 but not by 14
- D. neither 14 nor 34
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Q7
MATHS
Unit 5: Binomial Theorem and its Simple Applications
The absolute difference of the coefficients of $x^{10}$ and $x^7$ in the expansion of $\left(2x^2 + \frac{1}{2x}\right)^{11}$ is equal to
- A. $11^3 - 11$
- B. $12^3 - 12$
- C. $10^3 - 10$
- D. $13^3 - 13$
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Q8
MATHS
Unit 6: Sequence and Series
Let $a_n$ be the $n$th term of the series $5 + 8 + 14 + 23 + 35 + 50 + \ldots$, and $S_n = \sum_{k=1}^n a_k$. Then $S_{30} - a_{40}$ is equal to
- A. 11260
- B. 11280
- C. 11290
- D. 11310
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Q9
MATHS
Unit 10: Co-ordinate Geometry
If $\alpha > \beta > 0$ are the roots of the equation $a x^2 + b x + 1 = 0$, and
$$\lim_{x \to \frac{1}{\alpha}} \left(\frac{1-\cos(x^2+bx+q)}{2(1-\alpha x)^2}\right)^{1/2} = \frac{1}{k}\left(\frac{1}{\beta}-\frac{1}{\alpha}\right),$$
then $k$ is equal to
- A. $\alpha$
- B. $\beta$
- C. $2\alpha$
- D. $2\beta$
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Q10
MATHS
Unit 8: Integral Calculus
The integral $$\int \left(\left(\frac{x}{2}\right)^x + \left(\frac{2}{x}\right)^x\right) \log_2 x\, dx$$ is equal to
- A. $\left(\frac{x}{2}\right)^x + C$
- B. $\left(\frac{x}{2}\right)^x - \left(\frac{2}{x}\right)^x + C$
- C. $\left(\frac{x}{2}\right)^x \log_2\!\left(\frac{x}{2}\right) + C$
- D. $\left(\frac{x}{2}\right)^x \log_2 2 + C$
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Q11
MATHS
Unit 10: Co-ordinate Geometry
Let $O$ be the origin and $OP$ and $OQ$ be the tangents to the circle $x^2+y^2-6x+4y+8=0$ at the points $P$ and $Q$ on it. If the circumcircle of the triangle $OPQ$ passes through the point $(\alpha,\tfrac{1}{2})$, then a value of $\alpha$ is
- A. $-\tfrac{1}{2}$
- B. $1$
- C. $\tfrac{3}{2}$
- D. $\tfrac{5}{2}$
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Q12
MATHS
Unit 10: Co-ordinate Geometry
Let $A(0,1)$, $B(1,1)$ and $C(1,0)$ be the mid-points of the sides of a triangle with incentre at the point $D$. If the focus of the parabola $y^2=4ax$ passing through $D$ is $(\alpha+\beta\sqrt{2},0)$, where $\alpha$ and $\beta$ are rational numbers, then $\dfrac{\alpha}{\beta^2}$ is equal to
- A. $\dfrac{9}{2}$
- B. $6$
- C. $8$
- D. $12$
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Q13
MATHS
Unit 10: Co-ordinate Geometry
Let $P$ be the plane passing through the line $\dfrac{x-1}{1}=\dfrac{y-2}{-3}=\dfrac{z+5}{7}$ and the point $(2,4,-3)$. If the image of the point $(-1,3,4)$ in the plane $P$ is $(\alpha,\beta,\gamma)$, then $\alpha+\beta+\gamma$ is equal to
- A. $9$
- B. $10$
- C. $11$
- D. $12$
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Q14
MATHS
Unit 10: Co-ordinate Geometry
For $a,b\in \mathbb Z$ and $|a-b|\le 10$, let the angle between the plane $P: ax+y-z=b$ and the line $l: x-1=a-y=z+1$ be $\cos^{-1}\!\left(\tfrac13\right)$. If the distance of the point $(6,-6,4)$ from the plane $P$ is $3\sqrt6$, then $a^4+b^2$ is equal to
- A. $25$
- B. $32$
- C. $48$
- D. $85$
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Q15
MATHS
Unit 11: Three Dimensional Geometry
The area of the quadrilateral $ABCD$ with vertices $A(2,1,1)$, $B(1,2,5)$, $C(-2,-3,5)$ and $D(1,-6,-7)$ is equal to
- A. $48$
- B. $8\sqrt{38}$
- C. $9\sqrt{38}$
- D. $54$
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Q16
MATHS
Unit 12: Vector Algebra
Let the vectors $\vec u_1=\hat i+\hat j+a\hat k$, $\vec u_2=\hat i+b\hat j+\hat k$ and $\vec u_3=c\hat i+\hat j+\hat k$ be coplanar. If the vectors $\vec v_1=(a+b)\hat i+c\hat j+c\hat k$, $\vec v_2=a\hat i+(b+c)\hat j+a\hat k$ and $\vec v_3=b\hat i+b\hat j+(c+a)\hat k$ are also coplanar, then $6(a+b+c)$ is equal to
- A. $0$
- B. $4$
- C. $6$
- D. $12$
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Q17
MATHS
Unit 13: Statistics and Probability
If the probability that the random variable $X$ takes values $x$ is given by $P(X=x)=k(x+1)3^{-x}$, $x=0,1,2,3,\dots$, where $k$ is a constant, then $P(X\ge 2)$ is equal to
- A. $\frac{7}{18}$
- B. $\frac{11}{18}$
- C. $\frac{7}{27}$
- D. $\frac{20}{27}$
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Q18
MATHS
Unit 13: Statistics and Probability
Let the mean and variance of 12 observations be $\frac{9}{2}$ and $4$ respectively. Later on, it was observed that two observations were considered as 9 and 10 instead of 7 and 14 respectively. If the correct variance is $\frac{m}{n}$, where $m$ and $n$ are coprime, then $m+n$ is equal to
- A. 314
- B. 315
- C. 316
- D. 317
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Q19
MATHS
Unit 14: Trigonometry
The value of $36(4\cos^2 9^\circ-1)(4\cos^2 27^\circ-1)(4\cos^2 81^\circ-1)(4\cos^2 243^\circ-1)$ is
- A. 18
- B. 27
- C. 36
- D. 54
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Q20
CHEMISTRY
Unit 14: Some Basic Principles of Organic Chemistry
The negation of $(p\wedge (\sim q))\vee (\sim p)$ is equivalent to
- A. $p\vee (q\vee (\sim p))$
- B. $p\wedge q$
- C. $p\wedge (\sim q)$
- D. $p\wedge (q\wedge (\sim p))$
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Q31
PHYSICS
Unit 1: Units and Measurements
Match List I with List II
$\begin{array}{c|c}
\text{LIST I} & \text{LIST II} \\
\hline
\text{A. Torque} & \text{I. } ML^2T^{-2} \\
\text{B. Stress} & \text{II. } ML^{-2}T^{-2} \\
\text{C. Pressure gradient} & \text{III. } ML^{-1}T^{-1} \\
\text{D. Coefficient of viscosity} & \text{IV. } ML^{-1}T^{-2}
\end{array}$
Choose the correct answer from the options given below:
- A. A-III, B-IV, C-I, D-II
- B. A-II, B-I, C-IV, D-III
- C. A-II, B-IV, C-I, D-III
- D. A-IV, B-II, C-III, D-I
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Q32
PHYSICS
Unit 10: Oscillations and Waves
For particle $P$ revolving round the centre $O$ with radius of circular path $r$ and angular velocity $\omega$, as shown in below figure, the projection of $OP$ on the x-axis at time $t$ is
- A. $x(t)=r\cos(\omega t)$
- B. $x(t)=r\cos\left(\omega t-\frac{\pi}{6}\right)$
- C. $x(t)=r\cos\left(\omega t+\frac{\pi}{6}\right)$
- D. $x(t)=r\sin\left(\omega t+\frac{\pi}{6}\right)$
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Q33
PHYSICS
Unit 9: Kinetic Theory of Gases
The temperature at which the kinetic energy of oxygen molecules becomes double than its value at $27^\circ\text{C}$ is
- A. $327^\circ\text{C}$
- B. $627^\circ\text{C}$
- C. $927^\circ\text{C}$
- D. $1227^\circ\text{C}$
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Q34
PHYSICS
Unit 8: Thermodynamics
Work done by a Carnot engine operating between temperatures $127^\circ\text{C}$ and $27^\circ\text{C}$ is $2\,\text{kJ}$. The amount of heat transferred to the engine by the reservoir is :
- A. $2\,\text{kJ}$
- B. $2.67\,\text{kJ}$
- C. $8\,\text{kJ}$
- D. $4\,\text{kJ}$
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Q35
PHYSICS
Unit 7: Properties of Solids and Liquids
A hydraulic automobile lift is designed to lift vehicles of mass 5000 kg. The area of cross section of the cylinder carrying the load is 250 cm$^2$. The maximum pressure the smaller piston would have to bear is [Assume $g = 10\ \text{m/s}^2$]:
- A. $20 \times 10^6\ \text{Pa}$
- B. $2 \times 10^5\ \text{Pa}$
- C. $200 \times 10^6\ \text{Pa}$
- D. $2 \times 10^6\ \text{Pa}$
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Q36
PHYSICS
Unit 6: Gravitation
The acceleration due to gravity at height $h$ above the earth if $h \ll R$ (Radius of earth) is given by
- A. $g' = g\left(1 - \frac{2h}{R}\right)$
- B. $g' = g\left(1 - \frac{h}{2R}\right)$
- C. $g' = g\left(1 - \frac{h^2}{2R^2}\right)$
- D. $g' = g\left(1 - \frac{2h^2}{R^2}\right)$
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Q37
PHYSICS
Unit 6: Gravitation
The orbital angular momentum of a satellite is $L$, when it is revolving in a circular orbit at height $h$ from earth surface. If the distance of satellite from the earth centre is increased by eight times to its initial value, then the new angular momentum will be-
- A. $3L$
- B. $4L$
- C. $8L$
- D. $9L$
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Q38
PHYSICS
Unit 2: Kinematics
Given below are two statements:
Statement I : Area under velocity- time graph gives the distance travelled by the body in a given time.
Statement II : Area under acceleration-time graph is equal to the change in velocity- in the given time.
In the light of given statements, choose the correct answer from the options given below.
- A. Both Statement I and Statement II are true.
- B. Both Statement I and Statement II are False.
- C. Statement I is correct but Statement II is false.
- D. Statement I is incorrect but Statement II is true.
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Q39
PHYSICS
Unit 2: Kinematics
The trajectory of projectile, projected from the ground is given by $y = x - \frac{x^2}{20}$. Where $x$ and $y$ are measured in meter. The maximum height attained by the projectile will be.
- A. $5\ \text{m}$
- B. $10\sqrt{2}$
- C. $10\ \text{m}$
- D. $200\ \text{m}$
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Q40
PHYSICS
Unit 4: Work Energy and Power
A bullet of mass $0.1\ \text{kg}$ moving horizontally with speed $400\ \text{ms}^{-1}$ hits a wooden block of mass $3.9\ \text{kg}$ kept on a horizontal rough surface. The bullet gets embedded into the block and moves $20\ \text{m}$ before coming to rest. The coefficient of friction between the block and the surface is _______ (Given $g = 10\ \text{m/s}^2$)
- A. 0.25
- B. 0.50
- C. 0.65
- D. 0.90
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Q41
PHYSICS
Unit 11: Electrostatics
Electric potential at a point 'P' due to a point charge of $5 \times 10^{-9}\ \text{C}$ is 50 V. The distance of 'P' from the point charge is:
( Assume, $\frac{1}{4\pi\epsilon_0} = 9 \times 10^9\ \text{Nm}^2\text{C}^{-2}$ )
- A. 90 cm
- B. 3 cm
- C. 9 cm
- D. 0.9 cm
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Q42
PHYSICS
Unit 15: Electromagnetic Waves
The power radiated from a linear antenna of length $l$ is proportional to (Given, $\lambda$ = Wavelength of wave):
- A. $\frac{l}{\lambda}$
- B. $\frac{l}{\lambda^2}$
- C. $\left(\frac{l}{\lambda}\right)^2$
- D. $\frac{l^2}{\lambda}$
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Q43
PHYSICS
Unit 12: Current Electricity
For a given transistor amplifier circuit in CE configuration $V_{CC} = 1\,\text{V}$, $R_C = 1\,\text{k}\Omega$, $R_b = 100\,\text{k}\Omega$ and $\beta = 100$. Value of base current $I_b$ is
- A. $I_b = 0.1\,\mu\text{A}$
- B. $I_b = 10\,\mu\text{A}$
- C. $I_b = 1.0\,\mu\text{A}$
- D. $I_b = 100\,\mu\text{A}$
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Q44
PHYSICS
Unit 18: Atoms and Nuclei
A radioactive material is reduced to $1/8$ of its original amount in 3 days. If $8\times 10^{-3}\,\text{kg}$ of the material is left after 5 days the initial amount of the material is
- A. 32 g
- B. 40 g
- C. 256 g
- D. 64 g
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Q45
PHYSICS
Unit 17: Dual Nature of Matter and Radiation
In photo electric effect
A. The photocurrent is proportional to the intensity of the incident radiation.
B. Maximum kinetic energy with which photoelectrons are emitted depends on the intensity of incident light.
C. Maximum K.E. with which photoelectrons are emitted depends on the frequency of incident light.
D. The emission of photoelectrons require a minimum threshold intensity of incident radiation.
E. Max. K.E. of the photoelectrons is independent of the frequency of the incident light.
Choose the correct answer from the options given below:
- A. A and B only
- B. B and C only
- C. A and C only
- D. A and E only
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Q46
PHYSICS
Unit 10: Oscillations and Waves
The width of fringe is 2 mm on the screen in a double slits experiment for the light wavelength of 400 nm. The width of the fringe for the light of wavelength 600 nm will be:
- A. 2 mm
- B. 3 mm
- C. 4 mm
- D. 1.33 mm
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Q47
PHYSICS
Unit 15: Electromagnetic Waves
The waves emitted when a metal target is bombarded with high energy electrons are
- A. Radio Waves
- B. Infrared rays
- C. Microwaves
- D. X-rays
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Q48
PHYSICS
Unit 14: Electromagnetic Induction and Alternating Currents
An emf of $0.08\,\text{V}$ is induced in a metal rod of length $10\,\text{cm}$ held normal to a uniform magnetic field of $0.4\,\text{T}$, when moves with a velocity of:
- A. $20\,\text{m s}^{-1}$
- B. $2\,\text{m s}^{-1}$
- C. $0.5\,\text{m s}^{-1}$
- D. $3.2\,\text{m s}^{-1}$
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Q49
CHEMISTRY
Unit 11: d- and f-Block Elements
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R
Assertion A : Electromagnets are made of soft iron.
Reason R : Soft iron has high permeability and low retentivity.
In the light of above, statements, choose the most appropriate answer from the options given below.
- A. Both A and R are correct and R is the correct explanation of A
- B. Both A and R are correct but R is NOT the correct explanation of A
- C. A is correct but R is not correct
- D. A is not correct but R is correct
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Q50
PHYSICS
Unit 12: Current Electricity
The equivalent resistance between A and B as shown in figure is:
- A. 5 k$\Omega$
- B. 10 k$\Omega$
- C. 20 k$\Omega$
- D. 30 k$\Omega$
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Q61
CHEMISTRY
Unit 1: Some Basic Concepts in Chemistry
Which of the following have same number of significant figures?
A. 0.00253
B. 1.0003
C. 15.0
D. 163
Choose the correct answer from the options given below
- A. B and C only
- B. C and D only
- C. A, B and C only
- D. A, C and D only
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Q62
CHEMISTRY
Unit 11: d- and f-Block Elements
Arrange the following gases in increasing order of van der Waals constant 'a'
A. Ar
B. $\mathrm{CH_4}$
C. $\mathrm{H_2O}$
D. $\mathrm{C_6H_6}$
Choose the correct option from the following.
- A. A, B, C and D
- B. D, C, B and A
- C. B, C, D and A
- D. C, D, B and A
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Q63
CHEMISTRY
Unit 8: Chemical Kinetics
The correct reaction profile diagram for a positive catalyst reaction.
-
A.
Reaction profile with catalyst pathway lower than uncatalysed pathway, but with incorrect product level
-
B.
Reaction profile with catalyst and uncatalysed curves having the same peak height
-
C.
Reaction profile where the catalysed pathway has lower activation energy than the uncatalysed pathway and reactant/product energies remain unchanged
-
D.
Reaction profile with catalyst pathway higher than uncatalysed pathway
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Q64
CHEMISTRY
Unit 2: Atomic Structure
Henry Moseley studied characteristic X-ray spectra of elements. The graph which represents his observation correctly is
Given $\nu$ = frequency of X-ray emitted
$Z$ = atomic number
-
A.
Straight line graph of $\sqrt{\nu}$ vs $Z$
-
B.
Straight line graph of $\sqrt{Z}$ vs $\nu$
-
C.
Straight line graph of $\nu$ vs $Z$
-
D.
Straight line graph of $\nu^2$ vs $Z$
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Q65
CHEMISTRY
Unit 11: d- and f-Block Elements
In Hall - Heroult process, the following is used for reducing $\mathrm{Al_2O_3}$ :-
- A. $\mathrm{Na_3AlF_6}$
- B. Graphite
- C. Magnesium
- D. $\mathrm{CaF_2}$
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Q66
CHEMISTRY
Unit 8: Chemical Kinetics
Which of the following can reduce decomposition of $\mathrm{H_2O_2}$ on exposure to light
- A. Alkali
- B. Urea
- C. Dust
- D. Glass containers
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Q67
CHEMISTRY
Unit 9: Classification of Elements and Periodicity in Properties
Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R
Assertion A : Sodium is about 30 times as abundant as potassium in the oceans.
Reason R : Potassium is bigger in size than sodium.
In the light of the above statements, choose the correct answer from the options given below
- A. Both A and R are true and R is the correct explanation of A
- B. Both A and R are true but R is NOT the correct explanation of A
- C. A is true but R is false
- D. A is false but R is true
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Q68
CHEMISTRY
Unit 10: p-Block Elements
For a good quality cement, the ratio of lime to the total of the oxides of Si, Al and Fe should be as close as to
- A. 1
- B. 2
- C. 3
- D. 4
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Q69
CHEMISTRY
Unit 12: Coordination Compounds
Match List I with List II
List I (Coordination complex) and List II (Number of unpaired electrons):
A. $[Cr(CN)_6]^{3-}$
B. $[Fe(H_2O)_6]^{2+}$
C. $[Co(NH_3)_6]^{3+}$
D. $[Ni(NH_3)_6]^{2+}$
I. 0
II. 3
III. 2
IV. 4
Choose the correct answer from the options given below:
- A. A-II, B-IV, C-I, D-III
- B. A-III, B-IV, C-I, D-II
- C. A-II, B-I, C-IV, D-III
- D. A-IV, B-III, C-II, D-I
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Q70
CHEMISTRY
Unit 10: p-Block Elements
Which of these reactions is not a part of breakdown of ozone in stratosphere?
- A. $CF_2Cl_2\, (g) \xrightarrow{uv} \cdot Cl\, (g) + \cdot CF_2Cl\, (g)$
- B. $Cl\, (g) + O_3\, (g) \rightarrow ClO\, (g) + O_2\, (g)$
- C. $ClO\, (g) + O\, (g) \rightarrow Cl\, (g) + O_2\, (g)$
- D. $2\,ClO \rightarrow ClO_2\, (g) + Cl\, (g)$
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Q71
CHEMISTRY
Unit 15: Hydrocarbons
Major product 'P' formed in the following reaction is:
An unsaturated carboxylic acid with terminal alkene group is treated with $Br_2$ in the presence of $NaHCO_3$ to give major product P.
- A. BrCH$_2$CH$_2$CH$_2$CH$_2$COOH
- B. BrCH$_2$CH(Br)CH$_2$COOH
- C. BrCH$_2$CH(Br)CH(Br)CH$_2$COOH
- D. Brominated lactone product
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Q72
CHEMISTRY
Unit 17: Organic Compounds Containing Oxygen
The correct IUPAC nomenclature for the following compound is:
- A. 2-Formyl-5-methylhexan-6-oic acid
- B. 5-Formyl-2-methylhexanoic acid
- C. 5-Methyl-2-oxohexan-6-oic acid
- D. 2-Methyl-5-oxohexanoic acid
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Q73
CHEMISTRY
Unit 16: Organic Compounds Containing Halogens
The correct order of reactivity of following haloarenes towards nucleophilic substitution with aqueous $NaOH$ is:
- A. A > B > D > C
- B. C > A > D > B
- C. D > C > B > A
- D. D > B > A > C
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Q74
CHEMISTRY
Unit 5: Solutions
The descending order of acidity for the following carboxylic acids is:
A. $CH_3COOH$
B. $F_3CCOOH$
C. $ClCH_2COOH$
D. $FCH_2COOH$
E. $BrCH_2COOH$
Choose the correct answer from the options given below:
- A. E > D > B > A > C
- B. B > C > D > E > A
- C. D > B > A > E > C
- D. B > D > C > E > A
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Q75
CHEMISTRY
Unit 17: Organic Compounds Containing Oxygen
A compound 'X' when treated with phthalic anhydride in presence of concentrated $H_2SO_4$ yields 'Y'. 'Y' is used as an acid/base indicator. 'X' and 'Y' are respectively
- A. Anisole, methyl orange
- B. Toluidine, Phenolphthalein
- C. Salicylaldehyde, Phenolphthalein
- D. Carbolic acid, Phenolphthalein
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Q76
CHEMISTRY
Unit 17: Organic Compounds Containing Oxygen
The product $(P)$ formed from the following multistep reaction is:
An aromatic compound containing $NO_2$ and $CH_3$ substituents is treated successively with $(i)$ $Br_2$, $(ii)$ $H_2/Pd$, $(iii)$ $NaNO_2, HCl, 0^\circ C$, $(iv)$ $H_3PO_2$.
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A.
Bromotoluene with Br at the top-left position
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B.
Bromotoluene with Br at the right position
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C.
Bromophenol with OH and Br substituents
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D.
Bromophenol isomer with OH and Br at adjacent positions
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Q77
CHEMISTRY
Unit 13: Purification and Characterisation of Organic Compounds
The statements which are true about antagonists from the following is/are:
A. They bind to the receptor site.
B. Get transferred inside the cell for their action.
C. Inhibit the natural communication of the body.
D. Mimic the natural messenger.
Choose the correct answer from the options given below:
- A. A and B
- B. A, C and D
- C. B only
- D. A and C
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Q78
CHEMISTRY
Unit 18: Organic Compounds Containing Nitrogen
Match List I with List II
LIST I
Natural amino acid
A. Glutamic acid
B. Glutamine
C. Tyrosine
D. Tryptophan
LIST II
One letter code
I. Q
II. W
III. E
IV. Y
Choose the correct answer from the options given below:
- A. A-III, B-I, C-IV, D-II
- B. A-III, B-IV, C-I, D-II
- C. A-II, B-I, C-IV, D-III
- D. A-IV, B-III, C-I, D-II
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Q79
CHEMISTRY
Unit 17: Organic Compounds Containing Oxygen
Given below are two statements:
Statement I : Methyl orange is a weak acid.
Statement II : The benzenoid form of methyl orange is more intense/deeply coloured than the quinonoid form.
In the light of the above statement, choose the most appropriate answer from the options given below:
- A. Both statement I and Statement II are correct
- B. Both Statement I and Statement II are incorrect
- C. Statement I is correct but Statement II is incorrect
- D. Statement I is incorrect but Statement II is correct
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Q80
CHEMISTRY
Unit 7: Redox Reactions and Electrochemistry
Given below are two statements:
Statement I : In redox titration, the indicators used are sensitive to change in pH of the solution.
Statement II : In acid-base titration, the indicators used are sensitive to change in oxidation potential.
In the light of the above statements, choose the most appropriate answer from the options given below
- A. Both Statement I and Statement II are correct
- B. Both Statement I and Statement II are incorrect
- C. Statement I is correct but Statement II is incorrect
- D. Statement I is incorrect but Statement II is correct
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