List of practice Questions

Given below are two statements
Assertion (A): Hydrolysis of sucrose results in change in the optical rotation from dextro (+) to laevo (–)
Reason (R): Both the products from the hydrolysis are leavorotatory

In amylopectin, branching occurs by which of the glycosidic linkage?

Low levels of which of the following chemical substances cause depression?

The optical rotation of a racemic mixture of 2-methyl 1-butanol is:

What is ‘X’ in the following reaction?
2–Bromo–2–methyl butane $\xrightarrow{X}$ 2–methyl–2–butanol

What are ‘X’ and ‘Y’ in the following reactions?
Acetal $\xrightarrow{X}$ CH$_3$COCH$_3$ $\xrightarrow{Y}$ Oxime

The correct order of reactivity of the following towards nucleophilic addition reactions is: \[ \text{I. CH}_3\text{COCH}_3,\quad \text{II. CH}_3\text{CH}_2\text{CHO},\quad \text{III. ClCH}_2\text{CHO} \]

The suitable reagent to carry out the following reaction is:

Hydrolysis products of isobutyl isonitrile are:

R E 5 D A P $ 3 T I Q 7 9 B # 2 K % U 1 M W 4 * J 8 N
How many such numbers are there in the above arrangement, each of which is immediately preceded by a letter and not immediately followed by a letter?

What is the ratio of σ and pi bonds in pyrophosphoric acid ?

Let A=$\begin{pmatrix} 0&0 &1 \\ 1&0 &0 \\ 0&0 &0 \end{pmatrix}$, B=$\begin{pmatrix} 0&1 &0 \\ 0&0 &1 \\ 0&0 &0 \end{pmatrix}$ and P=$\begin{pmatrix} 0&1 &0 \\ x&0 &0 \\ 0&0 &y \end{pmatrix}$ be an orthogonal matrix such that B=PAP^-1 holds. Then

An electric dipole is placed at an angle of 30° with an electric field of intensity 2x10⁵ NC-1. It experiences a torque equal to 4 Nm. Calculate the magnitude of charge on the dipole, if the dipole length is 2cm.

An insulated copper wire of 100 turns is wrapped around a wooden cylindrical core of the cross- sectional area 24 cm². The two ends of the wire are connected to a resistor. The total resistance in the circuit is 129. If an externally applied uniform magnetic field in the core along its axis changes from 1.5 T in one direction to 1.5 T in the opposite direction, the charge flowing through a point in the circuit during the change of magnetic field will be ________mC.

Match List-I with List-II

	List- I (Plays)		List- II (Play Wrights)
A.	A Doll's House	I.	Samuel Beckett
B.	The Cherry Orchad	II.	Henrik Ibsen
C.	Waiting for Godot	III.	Harold Pinter
D.	The Room	IV.	Anton Pavlov Chekhov

Choose the correct answer from the options given below:

Fill in the blank with the correct preposition.
He is afraid_______ doing this task.

The P-V diagram of a Carnot's engine is shown in the graph below. The engine uses 1 mole of an ideal gas as working substance. From the graph, the area enclosed by the P-V diagram is
[ The heat supplied to the gas is 8000 J ]

If the matrix $\begin {bmatrix} x-y&1&-2 \\ 2x-y&0&3 \\ 2&-3&0 \end {bmatrix}$ is skew-symmetric, then values of x and y are respectively

Match the following:

Column I (Drug)	Column II (Source)	Column III (Fact)
A. Opioids	M. Opium poppy	I. Receptors are present in CNS and GI tract.
B. Cannabinoids	N. Cannabis sativa	II. Abused by sports persons
C. Cocaine	O. South American Plant	III. Crack
D. Heroin	P. Diacetyl morphine	IV. Smack

Assertion (A): Cardiac muscle is highly resistant to fatigue.
Reason (R): Cardiac muscles are innervated by the somatic nervous system.

Let 𝑔: ℝ → ℝ be a continuous function. Which one of the following is the solution of the differential equation
$\frac{d^2y}{dx^2}+y=g(x)\ \ \ \ \text{for}\ x \in \R$,
satisfying the conditions y(0) = 0, y'(0) = 1 ?

List-I shows different radioactive decay processes and List-II provides possible emitted particles. Match each entry in List-I with an appropriate entry from List-II, and choose the correct option.

	List-I		List-II
(P)	$^{238}_{92}U → ^{234}_{91}Pa$	(1)	one 𝛼 particle and one 𝛽+ particle
(Q)	$^{214}_{82}Pb → ^{210}_{82}Pb$	(2)	three 𝛽− particles and one 𝛼 particle
(R)	$^{210}_{81}Tl → ^{206}_{82}Pb$	(3)	two 𝛽− particles and one 𝛼 particle
(S)	$^{228}_{91}Pa → ^{224}_{88}Ra$	(4)	one 𝛼 particle and one 𝛽− particle
		(5)	one 𝛼 particle and two 𝛽+ particles

	List-I		List-II
(P)	\(^{238}_{92}U → ^{234}_{91}Pa\)	(1)	one 𝛼 particle and one 𝛽+ particle
(Q)	\(^{214}_{82}Pb → ^{210}_{82}Pb\)	(2)	three 𝛽− particles and one 𝛼 particle
(R)	\(^{210}_{81}Tl → ^{206}_{82}Pb\)	(3)	two 𝛽− particles and one 𝛼 particle
(S)	\(^{228}_{91}Pa → ^{224}_{88}Ra\)	(4)	one 𝛼 particle and one 𝛽− particle
		(5)	one 𝛼 particle and two 𝛽+ particles