What is the correct order of dehydration of the following compounds in presence of acidic medium?

Identify A and B in the following reaction.

Among the following, the least thermally stable is

Identify the major product in the following reaction.

Figure shows the vertical section of a frictionless surface. A block of mass 2 kg is released from rest from position A; its KE as it reaches position C is \((g = 10 m/s^2)\)

In the circuit shown in fig. A and B are two cells of the same emf E and of internal resistances rA and rB respectively. L is an ideal inductor and C is an ideal capacitor. The key K is closed. When the current in the circuit becomes steady, what should be the value of R so that the potential difference across the terminals of cell A is zero.

A light rod of length ‘L’ is suspended from a support horizontally by means of two vertical wires A and B of equal length as shown. Crosssection area of ‘A’ is half that of B. A weight ‘w’ is hung on the rod as shown. The value of ‘x’ so that the stress in ‘A’ is same as that in ‘B’, is

The coefficient of static friction between the two blocks shown in the figure is ‘μ’ and the table is smooth. The maximum value of ‘F’ so that both blocks moves together, is

A plano convex lens \((μ =\frac 3 2 )\)has radius of curvature R = 10 cm, and is placed at a distance of ‘b’ from a concave lens of focal length 20 cm as shown in the figure. At what distance ‘a’ should a point object be placed from plano convex lens, so that position of the final image is independent of ‘b’?

Two coherent sources \(S_1\) and \(S_2 \)are situated on the x-axis, screen ‘S’ is in y –z plane(as shown). The shape of the fringe on the screen is

The convex reflecting surface is represented by the equation \(2x = y^2\) as shown in figure. A ray travelling horizontally along positive x-axis becomes vertical after reflection. The co-ordinates of the point of incidence can be

A transverse wave is passing through a light string shown in the figure. The equation of wave is y = Asin(ωt – kx). The area of cross section of string is ‘A’ and density is ‘ρ’. The hanging mass is:

The current I through 10 Ω resistor in the circuit with ideal diodes shown in the figure is

A block is placed on an inclined plane moving towards right horizontally with an acceleration \(a_0=g\). The length of the plane AC = 1m. Friction is absent everywhere. Find the time taken (in seconds) by the block to reach from C to A.

A charged particle of mass m = 1 mg and charge q = 1 μC enters along AB at point A in a uniform magnetic field B = 1.2 T existing in the rectangular region of size a×b, where a = 4 m and b = 3m. The particle leaves the region exactly at corner point C. What is the speed v (in ms^{–1}) of the particle?

In the given figure, find the horizontal velocity u (in ms^{-1}) of a projectile so that it hits the inclined plane perpendicularly. Given H = 6.25 m:

A uniform cylinder rests on a cart as shown. The coefficient of static friction between the cylinder and the cart is 0.5. If the cylinder is 4 cm in diameter and 10 cm in height, then what is the minimum acceleration (in m/s^{2}) of the cart needed to cause the cylinder to tip over?

The figure shows three particles *A, B* and *C* on the *x-axis. *They are given* *velocities \(v_1=3m/s,v_2=2m/s,\;and\;v_3=5m/s\),respectively, in the direction shown. The position of centre of mass of *A, B* and* C *at time* t = 1 s *will be x = k (m), where k is:

In the circuit shown in figure, find the ratio of currents \(\frac{i_1}{i_2}\)

a. n = 0, l = 0, m = 0, s = +1/2

b. n = 1, l = 0, m = 0, s = –1/2

c. n = 1, l = 1, m = 0, s = +1/2

d. n = 1, l = 0, m = +1, s = +1/2

e. n = 3, l = 0, m = –1, s = –1/2

f. n = 2, l = 2, m = 0, s = –1/2

g. n = 2, l = 1, m = 0, s = –1/2

In this reaction equivalent weight of NO is \(\frac xy\) M then x + y will be

Then weight of MgSO_{4} will be formed in this series is

How many of the following compounds have sp^{3} hybridisation?

\(log_{17}log_2(5\sqrt x-\sqrt{25x-4)})=0\), is \(\frac{k}{25}\) then k is

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