For the given reactionWhat is 'A'?

Which of the following is 'a' FALSE statement ?

Find A, B and C in the following reactions :$$N{H_3} + A + C{O_2} \to {(N{H_4})_2}C{O_3}$$$${(N{H_4})_2}C{O_3} + {H_2}O

Match List - I with List - II. List I Electronic configuration List II $${\Delta _i}H$$ in kJ $$mo

Given below are two statements :Statement I : A mixture of chloroform and aniline can be separated by simple distillatio

Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R.Assertion A : Dipo

Which one of the following lanthanoids does not form MO2? [M is lanthanoid metal]

For the given reaction :What is 'A'?

Compound A used as a strong oxidizing agent is amphoteric in nature. It is the part of lead storage batteries. Compound

Identify the major products A and B respectively in the following reactions of phenol :

An amine on reaction with benzensulphonyl chloride produces a compound insoluble in alkaline solution. This amine can be

Given below are two statements : Statement I : o-Nitrophenol is steam volatile due to intramolecular hydrogen bonding.St

B reacts with Hydroxyl amine but does not give Tollen's test. Identify A and B.

Which of the following vitamin is helpful in delaying the blood clotting?

The orbital having two radial as well as two angular nodes is :

For a chemical reaction A + B ⇌ C + D($${\Delta _r}{H^\Theta }$$ = 80 kJ mol$$-$$1) the entropy change $${\Delta _r}{S^\

An exothermic reaction X $$ \to $$ Y has an activation energy 30 kJ mol$$-$$1. If energy change $$\Delta$$E during the r

Dichromate ion is treated with base, the oxidation number of Cr in the product formed is ___________.

Number of bridging CO ligands in [Mn2(CO)10] is __________.

Consider the following reaction$$MnO_4^ - + 8{H^ + } + 5{e^ - } \to M{n^{ + 2}} + 4{H_2}O,{E^o} = 1.51V$$.The quantity

224 mL of SO2(g) at 298 K and 1 atm is passed through 100 mL of 0.1 M NaOH solution. The non-volatile solute produced is

A homogeneous ideal gaseous reaction $$A{B_{2(g)}} \rightleftharpoons {A_{(g)}} + 2{B_{(g)}}$$ is carried out in a 25 li

The maximum value of the term independent of 't' in the expansion of $${\left( {t{x^{{1 \over 5}}} + {{{{(1 - x)}^{{1 \o

The value of $$\mathop {\lim }\limits_{h \to 0} 2\left\{ {{{\sqrt 3 \sin \left( {{\pi \over 6} + h} \right) - \cos \lef

Let A be a symmetric matrix of order 2 with integer entries. If the sum of the diagonal elements of A2 is 1, then the po

The value of $$\int\limits_{ - \pi /2}^{\pi /2} {{{{{\cos }^2}x} \over {1 + {3^x}}}} dx$$ is :

The number of seven digit integers with sum of the digits equal to 10 and formed by using the digits 1, 2 and 3 only is

Let R = {(P, Q) | P and Q are at the same distance from the origin} be a relation, then the equivalence class of (1, $$-

The value of $$\sum\limits_{n = 1}^{100} {\int\limits_{n - 1}^n {{e^{x - [x]}}dx} } $$, where [ x ] is the greatest inte

The intersection of three lines x $$-$$ y = 0, x + 2y = 3 and 2x + y = 6 is a :

In the circle given below, let OA = 1 unit, OB = 13 unit and PQ $$ \bot $$ OB. Then, the area of the triangle PQB (in sq

The value of $$\left| {\matrix{ {(a + 1)(a + 2)} & {a + 2} & 1 \cr {(a + 2)(a + 3)} & {a + 3} &

If $${{{{\sin }^1}x} \over a} = {{{{\cos }^{ - 1}}x} \over b} = {{{{\tan }^{ - 1}}y} \over c}$$; $$0 < x < 1$$, th

The maximum slope of the curve $$y = {1 \over 2}{x^4} - 5{x^3} + 18{x^2} - 19x$$ occurs at the point :

The rate of growth of bacteria in a culture is proportional to the number of bacteria present and the bacteria count is

In an increasing geometric series, the sum of the second and the sixth term is $${{25} \over 2}$$ and the product of the

The value of the integral $$\int\limits_0^\pi {|{{\sin }\,}2x|dx} $$ is ___________.

The number of solutions of the equation log4(x $$-$$ 1) = log2(x $$-$$ 3) is _________.

The sum of 162th power of the roots of the equation x3 $$-$$ 2x2 + 2x $$-$$ 1 = 0 is ________.

The area bounded by the lines y = || x $$-$$ 1 | $$-$$ 2 | is ___________.

The difference between degree and order of a differential equation that represents the family of curves given by $${y^2}

If y = y(x) is the solution of the equation $${e^{\sin y}}\cos y{{dy} \over {dx}} + {e^{\sin y}}\cos x = \cos x$$, y(0)

The number of integral values of 'k' for which the equation $$3\sin x + 4\cos x = k + 1$$ has a solution, k$$\in$$R is _

Consider the combination of 2 capacitors C1 and C2 with C2 > C1, when connected in parallel, the equivalent capacitan

An alternating current is given by the equation i = i1 sin $$\omega$$t + i2 cos $$\omega$$t. The rms current will be :

Four identical solid spheres each of mass 'm' and radius 'a' are placed with their centres on the four corners of a squa

A large number of water drops, each of radius r, combine to have a drop of radius R. If the surface tension is T and mec

LED is constructed from Ga-As-P semiconducting material. The energy gap of this LED is 1.9 eV. Calculate the wavelength

A short straight object of height 100 cm lies before the central axis of a spherical mirror whose focal length has absol

In a Young's double slit experiment two slits are separated by 2 mm and the screen is placed one meter away. When a ligh

Assume that a tunnel is dug along a chord of the earth, at a perpendicular distance (R/2) from the earth's centre, where

In a typical combustion engine the workdone by a gas molecule is given by $$W = {\alpha ^2}\beta {e^{{{ - \beta {x^2}} \

If two similar springs each of spring constant K1 are joined in series, the new spring constant and time period would be

A particle is moving with uniform speed along the circumference of a circle of radius R under the action of a central fi

The temperature $$\theta$$ at the junction of two insulating sheets, having thermal resistances R1 and R2 as well as top

Find the electric field at point P (as shown in figure) on the perpendicular bisector of a uniformly charged thin wire o

A planet revolving in elliptical orbit has :A. a constant velocity of revolution.B. has the least velocity when it is ne

Given below are two statements : one is labeled as Assertion A and the other is labelled as Reason R.Assertion A : An el

Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R.Assertion A : Body

The normal density of a material is $$\rho$$ and its bulk modulus of elasticity is K. The magnitude of increase in densi

If $$\lambda$$1 and $$\lambda$$2 are the wavelengths of the third member of Lyman and first member of the Paschen series

Find the gravitational force of attraction between the ring and sphere as shown in the diagram, where the plane of the r

Five equal resistances are connected in a network as shown in figure. The net resistance between the points A and B is :

A person standing on a spring balance inside a stationary lift measures 60 kg. The weight of that person if the lift des

The circuit contains two diodes each with a forward resistance of 50$$\Omega$$ and with infinite reverse resistance. If

In a series LCR resonant circuit, the quality factor is measured as 100. If the inductance is increased by two fold and

The mass per unit length of a uniform wire is 0.135 g/cm. A transverse wave of the form y = $$-$$ 0.21 sin (x + 30t) is

In an electrical circuit, a battery is connected to pass 20C of charge through it in a certain given time. The potential

A boy pushes a box of mass 2 kg with a force $$\overrightarrow F = \left( {20\widehat i + 10\widehat j} \right)N$$ on a

A radiation is emitted by 1000W bulb and it generates an electric field and magnetic field at P, placed at a distance of

A container is divided into two chambers by a partition. The volume of first chamber is 4.5 litre and second chamber is

As shown in the figure, a block of mass $$\sqrt 3 $$ kg is kept on a horizontal rough surface of coefficient of friction