Q1
MATHS
Unit 1: Sets Relations and Functions
Let $A = \{x \in \mathbb{R} : [x+3] + [x+4] \le 3\},$
$B = \{x \in \mathbb{R} : 3^x\left(\sum_{r=1}^{\infty} \frac{3}{10^r}\right)^{x-3} < 3^{-3x}\}$, where $[t]$ denotes greatest integer function. Then,
- A. $A = B$
- B. $A \subset B,\ A \ne B$
- C. $B \subset A,\ A \ne B$
- D. $A \cap B = \varnothing$
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Q2
MATHS
Unit 2: Complex Numbers and Quadratic Equations
The sum of all the roots of the equation $|x^2-8x+15|-2x+7=0$ is:
- A. $9-\sqrt{3}$
- B. $9+\sqrt{3}$
- C. $11+\sqrt{3}$
- D. $11-\sqrt{3}$
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Q3
MATHS
Unit 3: Matrices and Determinants
Let $A=[a_{ij}]_{2\times 2}$, where $a_{ij}\ne 0$ for all $i,j$ and $A^2=I$. Let $a$ be the sum of all diagonal elements of $A$ and $b=|A|$. Then $3a^2+4b^2$ is equal to
- A. $3$
- B. $4$
- C. $7$
- D. $14$
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Q4
MATHS
Unit 3: Matrices and Determinants
If the system of equations
$$x+y+az=b$$
$$2x+5y+2z=6$$
$$x+2y+3z=3$$
has infinitely many solutions, then $2a+3b$ is equal to
- A. $20$
- B. $23$
- C. $25$
- D. $28$
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Q5
MATHS
Unit 4: Permutations and Combinations
If $^{2n}C_3 : ^nC_3 = 10 : 1$, then the ratio $(n^2+3n):(n^2-3n+4)$ is
- A. $27:11$
- B. $35:16$
- C. $2:1$
- D. $65:37$
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Q6
MATHS
Unit 5: Binomial Theorem and its Simple Applications
If the ratio of the fifth term from the beginning to the fifth term from the end in the expansion of $\left(\sqrt[4]{2}+\frac{1}{\sqrt[4]{3}}\right)^n$ is $\sqrt{6}:1$, then the third term from the beginning is:
- A. $60\sqrt{2}$
- B. $60\sqrt{3}$
- C. $30\sqrt{2}$
- D. $30\sqrt{3}$
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Q7
MATHS
Unit 6: Sequence and Series
The sum of the first 20 terms of the series $5 + 11 + 19 + 29 + 41 + \dots$ is
- A. $3250$
- B. $3450$
- C. $3420$
- D. $3520$
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Q8
MATHS
Unit 6: Sequence and Series
Let $a_1,a_2,a_3,\dots,a_n$ be positive consecutive terms of an arithmetic progression. If $d>0$ is its common difference, then
$$\lim_{n\to\infty} \sqrt{\frac dn}\left(\frac{1}{\sqrt{a_1}+\sqrt{a_2}}+\frac{1}{\sqrt{a_2}+\sqrt{a_3}}+\cdots+\frac{1}{\sqrt{a_{n-1}}+\sqrt{a_n}}\right)$$
is
- A. $1$
- B. $0$
- C. $\sqrt d$
- D. $\frac{1}{\sqrt d}$
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Q9
MATHS
Unit 7: Limit Continuity and Differentiability
If $2x^y + 3y^x = 20$, then $\frac{dy}{dx}$ at $(2,2)$ is equal to:
- A. -\left(\frac{3 + \log_e 4}{2 + \log_e 8}\right)
- B. -\left(\frac{3 + \log_e 16}{4 + \log_e 8}\right)
- C. -\left(\frac{3 + \log_e 8}{2 + \log_e 4}\right)
- D. -\left(\frac{2 + \log_e 8}{3 + \log_e 4}\right)
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Q10
MATHS
Unit 8: Integral Calculus
Let $5f(x) + 4f\left(\frac{1}{x}\right) = \frac{1}{x} + 3$, $x > 0$. Then $18\int_1^2 f(x)\,dx$ is equal to:
- A. $5\log_e 2 - 3$
- B. $5\log_e 2 + 3$
- C. $10\log_e 2 - 6$
- D. $10\log_e 2 + 6$
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Q11
MATHS
Unit 8: Integral Calculus
Let $I(x)=\int \frac{x^2(x\sec^2 x + \tan x)}{(x\tan x + 1)^2}\,dx$. If $I(0)=0$, then $I\left(\frac{\pi}{4}\right)$ is equal to
- A. $\log_e\!\left(\frac{(\pi+4)^2}{32}\right)-\frac{\pi^2}{4(\pi+4)}$
- B. $\log_e\!\left(\frac{(\pi+4)^2}{16}\right)+\frac{\pi^2}{4(\pi+4)}$
- C. $\log_e\!\left(\frac{(\pi+4)^2}{16}\right)-\frac{\pi^2}{4(\pi+4)}$
- D. $\log_e\!\left(\frac{(\pi+4)^2}{32}\right)+\frac{\pi^2}{4(\pi+4)}$
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Q12
MATHS
Unit 12: Vector Algebra
The straight lines $l_1$ and $l_2$ pass through the origin and trisect the line segment of the line $L: 9x+5y=45$ between the axes. If $m_1$ and $m_2$ are the slopes of the lines $l_1$ and $l_2$, then the point of intersection of the line $y=(m_1+m_2)x$ with $L$ lies on
- A. $y-2x=5$
- B. $6x-y=15$
- C. $y-x=5$
- D. $6x+y=10$
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Q13
MATHS
Unit 12: Vector Algebra
If the equation of the plane passing through the line of intersection of the planes $2x-y+z=3$, $4x-3y+5z+9=0$ and parallel to the line $\frac{x+1}{-2}=\frac{y+3}{4}=\frac{z-2}{5}$ is $ax+by+cz+6=0$, then $a+b+c$ is equal to
- A. 12
- B. 13
- C. 14
- D. 15
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Q14
MATHS
Unit 12: Vector Algebra
One vertex of a rectangular parallelepiped is at the origin $O$ and the lengths of its edges along $x$, $y$ and $z$ axes are $3$, $4$ and $5$ units respectively. Let $P$ be the vertex $(3,4,5)$. Then the shortest distance between the diagonal $OP$ and an edge parallel to $x$ axis, not passing through $O$ or $P$ is:
- A. $\frac{12}{5}$
- B. $\frac{12}{5\sqrt{5}}$
- C. $12\sqrt{5}$
- D. $\frac{12}{\sqrt{5}}$
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Q16
MATHS
Unit 12: Vector Algebra
Let $\vec{a}=2\hat{i}+3\hat{j}+4\hat{k}$, $\vec{b}=\hat{i}-2\hat{j}-2\hat{k}$ and $\vec{c}=-\hat{i}+4\hat{j}+3\hat{k}$.
If $\vec{d}$ is a vector perpendicular to both $\vec{b}$ and $\vec{c}$, and $\vec{a}\cdot\vec{d}=18$, then $|\vec{a}\times\vec{d}|^2$ is equal to
- A. 640
- B. 680
- C. 720
- D. 760
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Q17
MATHS
Unit 13: Statistics and Probability
The mean and variance of a set of 15 numbers are 12 and 14 respectively. The mean and variance of another set of 15 numbers are 14 and $\sigma^2$ respectively. If the variance of all the 30 numbers in the two sets is 13, then $\sigma^2$ is equal to
- A. 12
- B. 11
- C. 10
- D. 9
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Q18
MATHS
Unit 13: Statistics and Probability
A pair of dice is thrown 5 times. For each throw, a total of 5 is considered a success. If the probability of at least 4 successes is $\frac{k}{311}$, then $k$ is equal to
- A. 75
- B. 82
- C. 123
- D. 164
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Q19
MATHS
Unit 10: Co-ordinate Geometry
From the top A of a vertical wall AB of height 30 m, the angles of depression of the top P and bottom Q of a vertical tower PQ are $15^\circ$ and $60^\circ$ respectively. B and Q are on the same horizontal level. If C is a point on AB such that $CB = PQ$, then the area in $\text{m}^2$ of the quadrilateral BCPQ is equal to
- A. $200(3-\sqrt{3})$
- B. $600(\sqrt{3}-1)$
- C. $300(\sqrt{3}-1)$
- D. $300(\sqrt{3}+1)$
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Q20
MATHS
Unit 1: Sets Relations and Functions
Statement $(P \Rightarrow Q) \wedge (R \Rightarrow Q)$ is logically equivalent to
- A. $(P \Rightarrow Q) \wedge (Q \Rightarrow R)$
- B. $(P \wedge R) \Rightarrow Q$
- C. $(P \Rightarrow R) \vee (Q \Rightarrow R)$
- D. $(P \vee R) \Rightarrow Q$
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Q31
PHYSICS
Unit 7: Properties of Solids and Liquids
By what percentage will the transmission range of a TV tower be affected when the height of the tower is increased by $21\%$ ?
- A. 14%
- B. 10%
- C. 12%
- D. 15%
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Q32
PHYSICS
Unit 19: Electronic Devices
Name the logic gate equivalent to the diagram attached
- A. NAND
- B. NOR
- C. AND
- D. OR
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Q33
PHYSICS
Unit 8: Thermodynamics
A small ball of mass $M$ and density $\rho$ is dropped in a viscous liquid of density $\rho_0$. After some time, the ball falls with a constant velocity. What is the viscous force on the ball?
- A. $F = Mg\left(1 - \frac{\rho_0}{\rho}\right)$
- B. $F = Mg\left(1 + \frac{\rho_0}{\rho}\right)$
- C. $F = Mg\left(1 + \frac{\rho}{\rho_0}\right)$
- D. $F = Mg\left(1 \pm \rho\rho_0\right)$
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Q34
PHYSICS
Unit 18: Atoms and Nuclei
The energy levels of an hydrogen atom are shown below. The transition corresponding to emission of shortest wavelength is
- A. A
- B. B
- C. C
- D. D
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Q35
PHYSICS
Unit 18: Atoms and Nuclei
The kinetic energy of an electron, $α$-particle and a proton are given as $4K$, $2K$ and $K$ respectively. The De-Broglie wavelengths associated with electron ($\lambda_e$), $α$-particle ($\lambda_\alpha$) and the proton ($\lambda_p$) are as follows:
- A. $\lambda_\alpha > \lambda_p > \lambda_e$
- B. $\lambda_\alpha < \lambda_p < \lambda_e$
- C. $\lambda_\alpha = \lambda_p < \lambda_e$
- D. $\lambda_\alpha = \lambda_p = \lambda_e$
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Q36
PHYSICS
Unit 16: Optics
A monochromatic light wave with wavelength $\lambda_1$ and frequency $\nu_1$ in air enters another medium. If the angle of incidence and angle of refraction at the interface are $45^\circ$ and $30^\circ$ respectively, then the wavelength $\lambda_2$ and frequency $\nu_2$ of the refracted wave are:
- A. $\lambda_2 = \sqrt{2}\lambda_1,\ \nu_2 = \nu_1$
- B. $\lambda_2 = \frac{1}{\sqrt{2}}\lambda_1,\ \nu_2 = \nu_1$
- C. $\lambda_2 = \lambda_1,\ \nu_2 = \frac{1}{\sqrt{2}}\nu_1$
- D. $\lambda_2 = \lambda_1,\ \nu_2 = \sqrt{2}\nu_1$
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Q37
PHYSICS
Unit 14: Electromagnetic Induction and Alternating Currents
For the plane electromagnetic wave given by $E = E_0\sin(\omega t - kx)$ and $B = B_0\sin(\omega t - kx)$, the ratio of average electric energy density to average magnetic energy density is
- A. 1
- B. 2
- C. 4
- D. $1/2$
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Q38
PHYSICS
Unit 14: Electromagnetic Induction and Alternating Currents
The induced emf can be produced in a coil by
A. moving the coil with uniform speed inside uniform magnetic field
B. moving the coil with non-uniform speed inside uniform magnetic field
C. rotating the coil inside the uniform magnetic field
D. changing the area of the coil inside the uniform magnetic field
Choose the correct answer from the options given below:
- A. A and C only
- B. B and C only
- C. C and D only
- D. B and D only
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Q39
PHYSICS
Unit 2: Kinematics
A particle is moving with constant speed in a circular path. When the particle turns by an angle $90^\circ$, the ratio of instantaneous velocity to its average velocity is $\pi : x\sqrt{2}$. The value of $x$ will be -
- A. 7
- B. 5
- C. 2
- D. 1
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Q40
PHYSICS
Unit 13: Magnetic Effects of Current and Magnetism
A long straight wire of circular cross-section (radius $a$) is carrying steady current $I$. The current $I$ is uniformly distributed across this cross-section. The magnetic field $B$ is
- A. uniform in the region $r < a$ and inversely proportional to distance $r$ from the axis, in the region $r > a$
- B. zero in the region $r < a$ and inversely proportional to $r$ in the region $r > a$
- C. directly proportional to $r$ in the region $r < a$ and inversely proportional to $r$ in the region $r > a$
- D. inversely proportional to $r$ in the region $r < a$ and uniform throughout the region $r > a$
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Q41
PHYSICS
Unit 19: Electronic Devices
The resistivity ($\rho$) of semiconductor varies with temperature. Which of the following curve represents the correct behaviour
-
A.
Graph showing resistivity decreasing linearly with temperature
-
B.
Graph showing resistivity increasing linearly with temperature
-
C.
Graph showing resistivity increasing nonlinearly with temperature
-
D.
Graph showing resistivity decreasing nonlinearly with temperature
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Q42
PHYSICS
Unit 11: Electrostatics
For a uniformly charged thin spherical shell, the electric potential $(V)$ radially away from the centre $(O)$ of shell can be graphically represented as -
-
A.
Graph with constant $V$ for $r<R$, then linearly decreasing for $r>R$
-
B.
Graph with constant $V$ for $r<R$, then decreasing as $1/r$ for $r>R$
-
C.
Graph increasing linearly inside, then decreasing as $1/r$ outside
-
D.
Graph increasing nonlinearly inside, then linearly decreasing outside
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Q43
PHYSICS
Unit 5: Rotational Motion
A mass $m$ is attached to two strings as shown in figure. The spring constants of two springs are $K_1$ and $K_2$. For the frictionless surface, the time period of oscillation of mass $m$ is
- A. $2\pi \sqrt{\dfrac{m}{K_1+K_2}}$
- B. $2\pi \sqrt{\dfrac{m}{K_1-K_2}}$
- C. $\dfrac{1}{2\pi}\sqrt{\dfrac{K_1+K_2}{m}}$
- D. $\dfrac{1}{2\pi}\sqrt{\dfrac{K_1-K_2}{m}}$
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Q44
PHYSICS
Unit 8: Thermodynamics
A source supplies heat to a system at the rate of 1000 W. If the system performs work at a rate of 200 W, the rate at which internal energy of the system increases is
- A. 500 W
- B. 600 W
- C. 1200 W
- D. 800 W
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Q45
PHYSICS
Unit 9: Kinetic Theory of Gases
The number of air molecules per $\text{cm}^3$ increased from $3 \times 10^{19}$ to $12 \times 10^{19}$. The ratio of collision frequency of air molecules before and after the increase respectively is :
- A. 0.25
- B. 0.50
- C. 0.75
- D. 1.25
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Q46
PHYSICS
Unit 12: Current Electricity
Two resistances are given as $R_1 = (10 \pm 0.5)\,\Omega$ and $R_2 = (15 \pm 0.5)\,\Omega$. The percentage error in the measurement of equivalent resistance when they are connected in parallel is -
- A. 4.33
- B. 6.33
- C. 2.33
- D. 5.33
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Q47
PHYSICS
Unit 3: Laws of Motion
Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : When a body is projected at an angle $45^\circ$, it's range is maximum.
Reason R : For maximum range, the value of $\sin 2\theta$ should be equal to one.
In the light of the above statements, choose the correct 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 true but R is false
- D. A is false but R is true
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Q48
PHYSICS
Unit 5: Rotational Motion
A small block of mass 100 g is tied to a spring of spring constant $7.5\,\text{N/m}$ and length 20 cm. The other end of the spring is fixed at a particular point A. If the block moves in a circular motion on a smooth horizontal surface with constant angular velocity $5\,\text{rad/s}$ about A, then tension in the spring is -
- A. 0.25 N
- B. 0.50 N
- C. 0.75 N
- D. 1.5 N
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Q49
PHYSICS
Unit 6: Gravitation
Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : Earth has atmosphere whereas moon doesn't have any atmosphere.
Reason R : The escape velocity on moon is very small as compared to that on earth.
In the light of the above statements, choose the correct 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 true but R is false
- D. A is false but R is true
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Q50
PHYSICS
Unit 6: Gravitation
A planet has double the mass of the earth. Its average density is equal to that of the earth. An object weighing $W$ on earth will weigh on that planet:
- A. $W$
- B. $2W$
- C. $2^{2/3}W$
- D. $2^{1/3}W$
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Q61
CHEMISTRY
Unit 3: Chemical Bonding and Molecular Structure
A compound is formed by two elements X and Y. The element Y forms cubic close packed arrangement and the element X occupies one third of the tetrahedral voids. What is the formula of the compound?
- A. $XY_3$
- B. $X_3Y$
- C. $X_2Y_3$
- D. $X_3Y_2$
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Q62
CHEMISTRY
Unit 6: Equilibrium
For a concentrated solution of a weak electrolyte $(K_{eq} = equilibrium\ constant)$ $A_2B_3$ of concentration $c$, the degree of dissociation $\alpha$ is
- A. $\left(\dfrac{K_{eq}}{6c^5}\right)^{1/5}$
- B. $\left(\dfrac{K_{eq}}{108c^4}\right)^{1/5}$
- C. $\left(\dfrac{K_{eq}}{5c^4}\right)^{1/5}$
- D. $\left(\dfrac{K_{eq}}{25c^2}\right)^{1/5}$
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Q63
CHEMISTRY
Unit 19: Biomolecules
Match List I with List II
List I:
A. Sucrose $\rightarrow$ Glucose and Fructose
B. Glucose $\rightarrow$ ethyl alcohol and $CO_2$
C. Starch $\rightarrow$ Maltose
D. Proteins $\rightarrow$ Amino acids
List II:
I. Zymase
II. Pepsin
III. Invertase
IV. Diastase
Choose the correct answer from the options given below:
- A. A-I, B-II, C-IV, D-III
- B. A-III, B-I, C-IV, D-II
- C. A-III, B-I, C-II, D-IV
- D. A-I, B-IV, C-III, D-II
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Q64
CHEMISTRY
Unit 9: Classification of Elements and Periodicity in Properties
The difference between electron gain enthalpies will be maximum between:
- A. Ne and F
- B. Ne and Cl
- C. Ar and F
- D. Ar and Cl
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Q65
CHEMISTRY
Unit 7: Redox Reactions and Electrochemistry
Which of the following options are correct for the reaction
$2\,[Au(CN)_2]^-(aq) + Zn(s) \rightarrow 2\,Au(s) + [Zn(CN)_4]^{2-}(aq)$
A. Redox reaction
B. Displacement reaction
C. Decomposition reaction
D. Combination reaction
Choose the correct answer from the options given below:
- A. A and B only
- B. A only
- C. C and D only
- D. A and D only
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Q66
CHEMISTRY
Unit 2: Atomic Structure
Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : Loss of electron from hydrogen atom results in nucleus of $\sim 1.5 \times 10^{-3}\,\text{pm}$ size.
Reason R : Proton ($H^+$) always exists in combined form.
In the light of the 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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Q67
CHEMISTRY
Unit 7: Redox Reactions and Electrochemistry
The standard electrode potential of $M^{+}/M$ in aqueous solution does not depend on
- A. Sublimation of a solid metal
- B. Ionisation of a gaseous metal atom
- C. Ionisation of a solid metal atom
- D. Hydration of a gaseous metal ion
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Q68
CHEMISTRY
Unit 20: Principles Related to Practical Chemistry
The setting time of Cement is increased by adding
- A. Limestone
- B. Clay
- C. Gypsum
- D. Silica
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Q69
CHEMISTRY
Unit 10: p-Block Elements
Match List I with List II
List I (Oxide): A. $N_2O_4$, B. $NO_2$, C. $N_2O_5$, D. $N_2O$
List II (Type of bond): I. $1\,N=O$ bond, II. $1\,N-O-N$ bond, III. $1\,N-N$ bond, IV. $1\,N\equiv N/N\equiv O$ bond
Choose the correct answer from the options given below:
- A. A-III, B-I, C-IV, D-II
- B. A-III, B-I, C-II, D-IV
- C. A-II, B-IV, C-III, D-I
- D. A-II, B-I, C-III, D-IV
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Q70
CHEMISTRY
Unit 11: d- and f-Block Elements
Strong reducing and oxidizing agents among the following, respectively, are
- A. $Ce^{4+}$ and $Eu^{2+}$
- B. $Eu^{2+}$ and $Ce^{4+}$
- C. $Ce^{3+}$ and $Ce^{4+}$
- D. $Ce^{4+}$ and $Tb^{4+}$
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Q71
CHEMISTRY
Unit 10: p-Block Elements
The possibility of photochemical smog formation is more at
↻ Repeated question — also appeared in
2023 (1 set)
- A. the places with healthy vegetation
- B. industrial areas
- C. Himalayan villages in winter
- D. marshy lands
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Q72
CHEMISTRY
Unit 12: Coordination Compounds
Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: The spin only magnetic moment value for $[Fe(CN)_6]^{3-}$ is $1.74$ BM, whereas for $[Fe(H_2O)_6]^{3+}$ is $5.92$ BM.
Reason R: In both complexes, Fe is present in $+3$ oxidation state.
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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Q73
CHEMISTRY
Unit 18: Organic Compounds Containing Nitrogen
Compound $P$ $(\mathrm{M.F.}\ C_{14}H_{13}ON)$
$P \xrightarrow[\Delta]{HCl}$ Filter $
ightarrow$ Residue $Q$ and Filtrate $
ightarrow$ NaOH → Oily liquid $R$.
Compound $P$ is neutral, $Q$ gives effervescence with $NaHCO_3$ while $R$ reacts with Hinsberg's reagent to give solid soluble in NaOH. Compound $P$ is
-
A.
N-methyl benzamide
-
B.
2-methyl-N-phenyl benzamide
-
C.
2-methylbenzohydrazide
-
D.
p-methyl benzanilide
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Q74
CHEMISTRY
Unit 14: Some Basic Principles of Organic Chemistry
Match List I with List II
List I (Element detected): A. Nitrogen, B. Sulphur, C. Phosphorous, D. Halogen
List II (Reagent used / Product formed): I. $Na_2[Fe(CN)_5NO]$, II. $AgNO_3$, III. $Fe_4[Fe(CN)_6]_3$, IV. $(NH_4)_2MoO_4$
Choose the correct answer from the options given below:
- A. A-II, B-I, C-IV, D-III
- B. A-III, B-I, C-IV, D-II
- C. A-II, B-IV, C-I, D-III
- D. A-IV, B-II, C-I, D-III
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Q75
CHEMISTRY
Unit 14: Some Basic Principles of Organic Chemistry
For the reaction
$RCH_2Br + I^- \xrightarrow[\text{Acetone}]{} RCH_2I + Br^-$ major
The correct statement is
- A. The reaction can occur in acetic acid also.
- B. $Br^-$ can act as competing nucleophile.
- C. The solvent used in the reaction solvates the ions formed in rate determining step.
- D. The transition state formed in the above reaction is less polar than the localised anion.
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Q76
CHEMISTRY
Unit 18: Organic Compounds Containing Nitrogen
The major product formed in the following reaction is
-
A.
Fused bicyclic lactam with one NH and one carbonyl
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B.
Fused bicyclic anhydride-like lactone with two carbonyls and one O
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C.
Fused bicyclic imide-like lactam with two carbonyls and one NH
-
D.
Fused bicyclic ketone
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Q77
CHEMISTRY
Unit 16: Organic Compounds Containing Halogens
Match List I with List II
LIST I
Name of reaction
A. Hell-Volhard-Zelinsky reaction
B. Iodoform reaction
C. Etard reaction
D. Gatterman-Koch reaction
LIST II
Reagent used
I. NaOH + I$_2$
II. (i) Cr$_2$Cl$_2$, CS$_2$ (ii) H$_2$O
III. (i) Br$_2$ / red phosphorus (ii) H$_2$O
IV. CO, HCl, anhyd. AlCl$_3$
Choose the correct answer from the options given below:
- A. A-I, B-II, C-III, D-IV
- B. A-III, B-II, C-I, D-IV
- C. A-III, B-I, C-II, D-IV
- D. A-III, B-I, C-IV, D-II
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Q78
CHEMISTRY
Unit 17: Organic Compounds Containing Oxygen
The major products A and B from the following reactions are:
-
A.
A = brominated amide product; B = ethyl-substituted aniline derivative
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B.
A = tribrominated aromatic amide; B = amino-substituted cyclohexane derivative
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C.
A = tribrominated aromatic amide; B = aniline derivative
-
D.
A = brominated aromatic amide; B = hydroxyethyl-substituted aromatic amide
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Q79
CHEMISTRY
Unit 15: Hydrocarbons
Polymer used in orlon is:
- A. Polyacrylonitrile
- B. Polyamide
- C. Polyethene
- D. Polycarbonate
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Q80
CHEMISTRY
Unit 19: Biomolecules
Match List I with List II
LIST I
Vitamin
A. Vitamin A
B. Thiamine
C. Ascorbic acid
D. Riboflavin
LIST II
Deficiency disease
I. Beri-Beri
II. Cheliosis
III. Xerophthalmia
IV. Scurvy
Choose the correct answer from the options given below:
- A. A-IV, B-I, C-III, D-II
- B. A-III, B-I, C-IV, D-II
- C. A-III, B-II, C-IV, D-I
- D. A-IV, B-II, C-III, D-I
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