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Amongst the following, the form of water with lowest ionic conductance at 298 K is:

a) distilled waterb) sea waterc) saline water used for intra venous injectiond) water from a wellSolution:In distilled water there are no ions... View Article

The isomer(s) of [Co(NH₃)₄Cl₂] that has/have a Cl-Co-Cl angle of 90⁰, is/are:<

a) cis onlyb) trans onlyc) meridional and transd) cis and transSolution:In cis-isomer, similar ligands are at an angle of 900.Answer: (a)... View Article

A mixture of gases O₂, H₂ and CO are taken…

A mixture of gases O2, H2 and CO are taken in a closed vessel containing charcoal. The graph that represents the correct behaviour of pressure... View Article

The reaction of H₃N₃B₃Cl₃

The reaction of H3N3B3Cl3 (A) with LiBH4 in tetrahydrofuran gives inorganic benzene (B). Furthur, the reaction of (A) with (C) leads to... View Article

The true statement amongst the following.

The true statement amongst the following. a) S is a function of temperature but S is not a function of temperature.b) Both S and S are functions... View Article

The correct order spin-only magnetic moments of the following complexes is:

The correct order spin-only magnetic moments of the following complexes is: I. [Cr(H2O)6]Br2II. Na4[FeCN6]III. Na3[Fe(C2O4)3] (0 > P)IV.... View Article

In the figure shown below reactant A (represented by the square) is in equilibrium with product B (represented by circle).

In the figure shown below reactant A (represented by the square) is in equilibrium with product B (represented by circle). The equilibrium... View Article

The first and second ionization enthalpies of a metal are 496 and 4560 kJ mol^-1 respectively. How many moles of HCl and H₂SO₄, respectively, will be needed to react completely with 1 mole of metal hydroxide?

a) 1 and 2b) 1 and 0.5c) 1 and 1d) 2 and 0.5Solution:The given data for ionization energies clearly shows that IE2 ≫ IE1. So, the element belongs... View Article

Among the statements (a)-(d), the correct ones are:

Among the statements (a)-(d), the correct ones are: a) Lithium has the highest hydration enthalpy among the alkali metals.b) Lithium chloride is... View Article

The solubility product of Cr(OH)₃ at 298 K is 6×10^-31 . The concentration of hydroxide ions in a saturated solution Cr(OH)₃ will be

a) (18×10-31)1/4b) (18×10-31)1/2c) (2.22×10-31)1/4d) (4.86×10-29)1/4Solution:Cr(OH)3 (s) Cr3+(aq) + 3OH-(aq) 1-S S 3SKsp = 27S4 6×10-31 = 27S4... View Article

5 g of Zinc is treated separately with an excess of

5 g of Zinc is treated separately with an excess of I. dilute hydrochloric acid andII. aqueous sodium hydroxide.The ratio of the volumes of H2... View Article

The number of chiral carbons present in the molecule given below is

The number of chiral carbons present in the molecule given below is ________. Solution:Total chiral carbon = 5Answer (5)... View Article

The oxidation states of iron atoms in compounds (A), (B) and (C), respectively, are x, y and z. The sum of x, y and z is

The oxidation states of iron atoms in compounds (A), (B) and (C), respectively, are x, y and z. The sum of x, y and z is _____. Solution:Na4... View Article

The internal energy change (in J) when 90 g of water undergoes complete evaporation at 100º C is

The internal energy change (in J) when 90 g of water undergoes complete evaporation at 100º C is (Given: ΔHvap for water at 373 K =... View Article

he Gibbs energy change (in J) for the given reaction at [Cu²⁺] = [Sn²⁺] = 1 M and 298 K is:

The Gibbs energy change (in J) for the given reaction at [Cu2+] = [Sn2+] = 1 M and 298 K is: Cu(s) + Sn2+ (aq.) → Cu2+(aq.) +... View Article

The mass of gas adsorbed, x, per unit mass of adsorbate, m, was measured at various pressures, p. A graph between log [x / m] and log p gives a straight line with slope equal to 2 and the intercept equal to 0.4771. The value of [x / m] at a pressure of 4 atm is: (Given log 3 = 0.4771)

(x / m) = KP1/nlog (x / m) = log (k) + (1 / n) log (p)y = c + mxIntercept C = logk = 0.4771Slope = 1 / n = 2, k = 3(x / m) = k (P)1/n at P = 4... View Article

Consider that a d⁶ metal ion (M²⁺) forms a complex with aqua ligands, and the spin only magnetic moment of the complex is 4.90 BM. The geometry and the crystal field stabilization energy of the complex is:

a) tetrahedral and –0.6Δtb) tetrahedral and –1.6Δt + 1Pc) octahedral and –1.6Δ0d) octahedral and... View Article

M	T	W	T	F	S	S
	1	2	3	4	5	6
7	8	9	10	11	12	13
14	15	16	17	18	19	20
21	22	23	24	25	26	27
28	29	30