The oxoacid of sulphur that does not contain bond between sulphur atoms is

The increasing order of the reactivity of the following compounds towards electrophilic aromatic substitution reactions

The graph between $${\left| \psi \right|^2}$$ and r (radial distance) is shown below. This represents :

The major product of the following reaction is :

During the change of O2 to O2- , the incoming electron goes to the orbital :

Three complexes, [CoCl(NH3)5] 2+(I), [Co(NH3)5H2O]3+ (II) and [Co(NH3)6] 3+(III) absorb light in the visible region. The

The species that can have a trans-isomer is : (en = ehane-1, 2-diamine, ox = oxalate)

The major product of the following reaction is :

At room temperature, a dilute solution of urea is prepared by dissolving 0.60 of urea in 360 g of water. If the vapour p

The principle of column chromatography is :

A process will be spontaneous at all temperatures if :

At 300 K and 1 atmospheric pressure, 10 mL of a hydrocarbon required 55 mL of O2 for complete combustion, and 40 mL of C

Consider the following statements (a) The pH of a mixture containing 400 mL of 0.1 M H2SO4 and 400 mL of 0.1 M NaOH will

A bacterial infection in an internal wound grows as N'(t) = N0 exp(t), where the time t is in hours. A does of antibioti

The major product of the following reaction is :

Major products of the following reaction are :

The isoelectronic set of ions is :

Consider the statements S1 and S2 S1 : Conductivity always increases with decrease in the concentration of electrolyte.

Consider the hydrated ions of Ti2+, V2+, Ti3+, and Sc3+. The correct order of their spin-only magnetic moments is :

Amylopectin is compound of :

Ethylamine (C2H5NH2) can be obtained from N-ethylphatalimide on treatment with :

Increasing rate of SN1 reaction in the following compounds is :

Assume that each born child is equally likely to be a boy or a girl. If two families have two children each, then the co

If $${\Delta _1} = \left| {\matrix{ x & {\sin \theta } & {\cos \theta } \cr { - \sin \theta } & { -

If the length of the perpendicular from the point ($$\beta $$, 0, $$\beta $$) ($$\beta $$ $$ \ne $$ 0) to the line, $${x

If y = y(x) is the solution of the differential equation $${{dy} \over {dx}} = \left( {\tan x - y} \right){\sec ^2}x$$,

If a > 0 and z = $${{{{\left( {1 + i} \right)}^2}} \over {a - i}}$$, has magnitude $$\sqrt {{2 \over 5}} $$, then $$

If $$\alpha $$ and $$\beta $$ are the roots of the quadratic equation, x2 + x sin $$\theta $$ - 2 sin $$\theta $$ = 0,

All the pairs (x, y) that satisfy the inequality $${2^{\sqrt {{{\sin }^2}x - 2\sin x + 5} }}.{1 \over {{4^{{{\sin }^2}y}

The region represented by| x – y | $$ \le $$ 2 and | x + y| $$ \le $$ 2 is bounded by a :

Let f(x) = ex – x and g(x) = x2 – x, $$\forall $$ x $$ \in $$ R. Then the set of all x $$ \in $$ R, where the function h

If a1, a2, a3, ............... an are in A.P. and a1 + a4 + a7 + ........... + a16 = 114, then a1 + a6 + a11 + a16 is eq

If for some x $$ \in $$ R, the frequency distribution of the marks obtained by 20 students in a test is : .tg {border-

The number of 6 digit numbers that can be formed using the digits 0, 1, 2, 5, 7 and 9 which are divisible by 11 and no d

If the system of linear equations x + y + z = 5 x + 2y + 2z = 6 x + 3y + $$\lambda $$z = $$\mu $$, ($$\lambda $$, $$\mu

Let A (3, 0, –1), B(2, 10, 6) and C(1, 2, 1) be the vertices of a triangle and M be the midpoint of AC. If G divides BM

Let f : R $$ \to $$ R be differentiable at c $$ \in $$ R and f(c) = 0. If g(x) = |f(x)| , then at x = c, g is :

The value of $$\int\limits_0^{2\pi } {\left[ {\sin 2x\left( {1 + \cos 3x} \right)} \right]} dx$$, where [t] denotes the

If $$\int {{{dx} \over {{{\left( {{x^2} - 2x + 10} \right)}^2}}}} = A\left( {{{\tan }^{ - 1}}\left( {{{x - 1} \over 3}}

If$$f(x) = \left\{ {\matrix{ {{{\sin (p + 1)x + \sin x} \over x}} & {,x < 0} \cr q & {,x = 0} \cr

If a directrix of a hyperbola centred at the origin and passing through the point (4, –2$$\sqrt 3 $$ ) is 5x = 4$$\sqrt

If $$\mathop {\lim }\limits_{x \to 1} {{{x^4} - 1} \over {x - 1}} = \mathop {\lim }\limits_{x \to k} {{{x^3} - {k^3}} \o

Let f(x) = x2 , x $$ \in $$ R. For any A $$ \subseteq $$ R, define g (A) = { x $$ \in $$ R : f(x) $$ \in $$ A}. If S = [

Two wires A & B are carrying currents I1 & I2 as shown in the figure. The separation between them is d. A third

A 25 × 10–3 m3 volume cylinder is filled with 1 mol of O2 gas at room temperature (300K). The molecular diameter of O2,

In a photoelectric effect experiment the threshold wavelength of the light is 380 nm. If the wavelentgh of incident ligh

A transformer consisting of 300 turns in the primary and 150 turns in the secondary gives output power of 2.2 kW. If the

In an experiment, the resistance of a material is plotted as a function of temperature (in some range). As shown in the

A ray of light AO in vacuum is incident on a glass slab at angle 60° and refracted at angle 30° along OB as shown in the

n moles of an ideal gas with constant volume heat capcity CV undergo an isobaric expansion by certain volume. The ratio

A proton, an electron, and a Helium nucleus, have the same energy. They are in circular orbits in a plane due to magneti

A particle of mass m is moving along a trajectory given by x = x0 + a cos$$\omega $$1t y = y0 + b sin$$\omega $$2t The t

The electric field of a plane electromagnetic wave is given by $$\overrightarrow E = {E_0}\widehat i\cos (kz)cos(\omega

Two coaxial discs, having moments of inertia I1 and I1/2, are rotating with respective angular velocities $$\omega $$1

A thin disc of mass M and radius R has mass per unit area $$\sigma $$(r) = kr2 where r is the distance from its centre.

A cylinder with fixed capacity of 67.2 lit contains helium gas at STP. The amount of heat needed to raise the temperatur

A ball is thrown upward with an initial velocity V0 from the surface of the earth. The motion of the ball is affected by

One plano-convex and one plano-concave lens of same radius of curvature 'R' but of different materials are joined side b

In a meter bridge experiment, the circuit diagram and the corresponding observation table are shown in figure .tg {bo

A current of 5 A passes through a copper conductor (resistivity = 1.7 × 10–8 $$\Omega $$m) of radius of cross-section 5

Figure shows charge (q) versus voltage (V) graph for series and parallel combination of two given capacitors. The capaci

Two particles, of masses M and 2M, moving, as shown, with speeds of 10 m/s and 5 m/s, collide elastically at the origin.

The ratio of surface tensions of mercury and water is given to be 7.5 while the ratio of thier densities is 13.6. Their

The value of acceleration due to gravity at Earth's surface is 9.8 ms–2. The altitude above its surface at which the acc

A uniformly charged ring of radius 3a and total charge q is placed in xy-plane centred at origin. A point charge q is mo

In the given circuit, an ideal voltmeter connected across the 10$$\Omega $$ resistance reads 2V. The internal resistance

A moving coil galvanometer allows a full scale current of 10–4 A. A series resistance of 2 M$$\Omega $$ is required to c