In the above situation, a current is induced in the ring which interacts with the horizontal component of the magnetic field to produce an average force in the upward direction.

The linear momentum of an isolated system remains constant.

The molecules of a gas collide with each other and the velocities of the molecules change due to the collision.

For every action there is an equal and opposite reaction.

14) The figure shows a surface XY separating two transparent media, medium -1 and medium -2. The lines ab and cd represent wavefronts of a light wave travelling in medium-1 and incident on XY. The lines ef and gh represent wavefronts of the light wave in medium-2 after refraction.

Light travels as a

15) The figure shows a surface XY separating two transparent media, medium -1 and medium -2. The lines ab and cd represent wavefronts of a light wave travelling in medium-1 and incident on XY. The lines ef and gh represent wavefronts of the light wave in medium-2 after refraction.

The phases of the light wave at c, d, e and f are Φ_c, Φ_d, Φ_e and Φ_f respectively. It is given that Φ_c ≠ Φ_f

16) The figure shows a surface XY separating two transparent media, medium -1 and medium -2. The lines ab and cd represent wavefronts of a light wave travelling in medium-1 and incident on XY. The lines ef and gh represent wavefronts of the light wave in medium-2 after refraction.

Speed of the light is

The speed of sound of the whistle is

The distribution of the sound intensity of the whistle as observed by the passengers in train A is best represented by

The spread of frequency as observed by the passengers in train B is

All chiral molecules have chiral centres.

Alkali metals in liquid ammonia give solvated species of the type [M(NH₃)_n]⁺ (M = alkali metals).

The energy spread of each germanium atomic energy level is infinitesimally small.

Reaction of glucose with Fehling's solution gives CuO and gluconic acid.

36) Reimer-Tiemann reaction introduces an aldehyde group, on to the aromatic ring of phenol, ortho to the hydroxyl group. This reaction involves electrophilic aromatic substitution. This is a general method for the synthesis of substituted salicyladehydes as depicted below.

Which one of the following reagents is used in the above reaction?

37) Reimer-Tiemann reaction introduces an aldehyde group, on to the aromatic ring of phenol, ortho to the hydroxyl group. This reaction involves electrophilic aromatic substitution. This is a general method for the synthesis of substituted salicyladehydes as depicted below.

The electrophile in this reaction is

38) Reimer-Tiemann reaction introduces an aldehyde group, on to the aromatic ring of phenol, ortho to the hydroxyl group. This reaction involves electrophilic aromatic substitution. This is a general method for the synthesis of substituted salicyladehydes as depicted below.

The structure of the intermediate I is

Among the following, identify the correct statement.

While Fe³⁺ is stable, Mn³⁺ is not stable in acid solution because

Sodium fusion extract, obtained from aniline, on treatment with iron (II) sulphate and H₂SO₄ in presence of air gives a Prussian blue precipitate. The blue colour is due to the formation of

STATEMENT-2 : f(t) = f(t + 2π) for each real t.

STATEMENT-2 : The vectors 14i + 2j + 15k is parallel to the line of intersection of the given planes.

STATEMENT-2 : In any triangle, bisector of an angle divides the triangle into two similar triangles.

STATEMENT-2 : A parabola is symmetric about its axis.

The line y = x meets y = ke^x for k ≤ 0 at

The positive value of k for which ke^x - x = 0 has only one root is

For k > 0, the set of all values of k for which ke^x - x = 0 has two distinct roots is

Which one of the following statements is correct?

Which one of the following statements is correct?

Which one of the following statements is correct?