Mix Test - 1...

50 mL of 0.1M solution of a salt reacted with 25 mL of 0.1M solution of sodium sulphite. The half reaction for the oxidation of sulphite ion is:



If the oxidation number of metal in the salt was 3, then what would be the new oxidation number of the metal?

In the given reaction, [X] is

The molecule/ion in which the central atom violates the octet rule is:

Isostructural molecules among the following pairs are:

Directions: In the following question, two statements are given. Examine these statements carefully and mark the correct answer accordingly.

STATEMENT-1: Boat conformation of cyclohexane suffers from angle strain and torsional strain.
STATEMENT-2: Boat conformation has bond angle 109⁰28' and eclipsing of hydrogen takes place.

The depression in freezing point for 10% (w/w) aqueous glucose (M.W: 180) is T (K). The freezing point of 10% (w/w) aqueous urea (M.W: 60) solution is:

A hydrogenation reaction is carried out at 500 K. If the same reaction is carried out in the presence of a catalyst at the same rate, the temperature required is 400 K. The activation energy of the reaction if the catalyst lowers the activation barrier by 20 kJ/mol is

Directions: In the following question, two statements are given. Examine these statements carefully and mark the correct answer accordingly.

STATEMENT-1: Zn(OH)₂ is amphoteric in water and Zn(NH₂)₂ is amphoteric in ammonia.
STATEMENT-2: Liquid ammonia resembles the aqueous system quite closely.

How much faster would a reaction proceed at 127^oC than 27^oC, if the activation energy is 92.12 J? (R = 8.3 J)

In the reaction
,
, _{then which of the following aryl halides is most reactive?}

Dibromosuccinic acid decomposes according to the following reaction:

C₂H₂Br(COOH)₂ C₂HBr(COOH)₂ + HBr

When 50 ml of acid is titrated against standard NaOH at various time intervals, at t = 0, 30 ml of NaOH and at t = 200 min, 33 ml of NaOH were required. The extent of the reaction in mole % is

The correct order of bond angles is:

Which of the following reacts with excess methyl magnesium bromide followed by acid hydrolysis to produce 2,3,3-trimethyl-2-pentanol?

What is the product of the reaction of 1-methylcyclopentanol with sodium dichromate and acetic acid?

For the reaction at 184^oC and 0.083 JK^-1 mol^-1, when K_p and K_c are compared at 184^oC, it is found that

A weak acid BOH has the dissociation constant 1 10^-5 M. It forms a salt BCl on reaction with HCl. The degree of hydrolysis of 0.1 M solution of BCl is

(I) r_f = k_f [A]² [B] and r_b = k_b [C]³ [D]
(II) If temperature is increased, then the reaction shifts in forward direction.
(III) K_eq(P) =
(IV) On adding an inert gas at constant pressure, the reaction shifts in the forward direction.

Solubility of BaF₂ in a solution of Ba(NO₃)₂ will be represented by the concentration terms:

Which of the following can act as a buffer?

K_b for the hydrolysis reaction, B⁺ + H₂O BOH + H⁺ is 1.0 10^-6. The hydrolysis constant of the salt is

A weak acid HX (K_a = 1 10^-7) on reaction with NaOH gives NaX for 0.1M aqueous solution of NaX, the percentage hydrolysis is

pH of water is 7.0 at 25^oC. If water is heated to 70^oC, then the

The degree of hydrolysis of a salt of a weak acid and a weak base in its 0.1M solution is found to be 50%. If the molarity of the solution is 0.2M, then the percentage hydrolysis of the salt should be

C is

A solution of a substance containing 1.05 g per 100 mL was found to be isotonic with 3% glucose solution. The molecular mass of the substance is

Consider two liquids A and B, having pure vapour pressures and respectively, forming an ideal solution. The plot of (when X_A and Y_A are the mole fractions of A in liquid and vapour phases respectively) is linear with slope and intercepts

In one of Bohr`s orbits of hydrogen atom, an electron possesses a wavelength of 13.32 A⁰. When it falls into an orbit, its wavelength is found to be 6.66 A⁰. The wavelength of spectral line emitted in this transition is nearly

Estimate the difference in energy between first and second Bohr's orbits for a hydrogen atom. At what minimum atomic number would a transition from n = 2 to n = 1 energy level result in the emission of X-rays with = 3 × 10⁸ m?

Identify the reaction in which the given product is not correct.