Which of the following has the shortest C-Cl bond?
a) Cl- CH=CH2 b) Cl-CH=CH-CH3 c) Cl-CH=CH-OCH3 d) Cl-CH=CH-NO2 Solution: There is extended conjugation present in option (d), which will... View Article
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Which of the following reactions will not produce a racemic product?
Which of the following reactions will not produce a racemic product? Solution: Answer: (b)
The number of sp2 hybrid orbitals in molecule of benzene is:
a) 18 b) 24 c) 6 d) 12 Solution: Benzene (C6H6) has 6 sp2 hybridized carbons. Each carbon has 3... View Article
Amongst the following, the form of water with lowest ionic conductance at 298 K is:
a) distilled water b) sea water c) saline water used for intra venous injection d) water from a well Solution:... View Article
The isomer(s) of [Co(NH3)4Cl2] that has/have a Cl-Co-Cl angle of 900, is/are:<
a) cis only b) trans only c) meridional and trans d) cis and trans Solution: In cis-isomer, similar ligands are... 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... 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)... 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... 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]Br2 II. Na4[FeCN6] III. Na3[Fe(C2O4)3] (0 > P)... 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).... 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 2 b) 1 and 0.5 c) 1 and 1 d) 2 and 0.5 Solution: The given data... 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)... 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)1/4 b) (18×10-31)1/2 c) (2.22×10-31)1/4 d) (4.86×10-29)1/4 Solution: Cr(OH)3 (s) Cr3+(aq) + 3OH–(aq) 1-S S 3S Ksp = 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 and II. aqueous sodium hydroxide.... 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 = 5 Answer... 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... 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... 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... 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/n log (x / m) = log (k) + (1 / n) log (p) y =... View Article
The metal mainly used in devising photoelectric cells is:a) Li
b) Cs
c) Rb
d) Na
Solution: ‘Cs’ is used in the photoelectric cell as its ionisation energy is lowest. Answer: (b)
