The mole fraction of a solute
The mole fraction of a solute in a 100 molal aqueous solution is _____ × 10–2 . (Round off to... View Article
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The pressure exerted by a non-reactive gaseous mixture
The pressure exerted by a non-reactive gaseous mixture of 6.4 g of methane and 8.8 g of carbon dioxide in... View Article
For a certain first-order reaction
For a certain first-order reaction 32% of the reactant is left after 570s. The rate constant of this reaction is... View Article
The standard enthalpies of formation
The standard enthalpies of formation of Al2O3 and CaO are –1675 kJ mol–1 and –635 kJ mol–1 respectively. For the... View Article
The oxygen dissolved in water exerts a partial pressure
The oxygen dissolved in water exerts a partial pressure of 20 kPa in the vapour above water. The molar solubility... View Article
The reaction of white phosphorus on boiling with alkali
The reaction of white phosphorus on boiling with alkali in an inert atmosphere resulted in the formation of product ‘A’.... View Article
15 mL of an aqueous solution of Fe2+ in the acidic medium completely reacted with 20 mL of 0.03 M aqueous Cr 2O72-. The molarity of the Fe2+ solution is _____× 10–2M.(Round off to the Nearest Integer).
Answer: 24 By law of equivalence Meq of Fe2+ = Meq of Cr 2O72- M × 15 × 1 =... View Article
A certain orbital has n = 4 and ml = –3. The number of radial nodes in this orbital is ____.(Round off to the Nearest Integer).
Answer: 0 Number of radial nodes = n – l– 1 n = 4, ml =–3 so l =3 radial... View Article
Which of the following compound CANNOT act as a Lewis base?
a. ClF3 b. PCl5 c. NF3 d. SF4 Answer: (b) NF3 has no vacant orbital neither in nitrogen nor in... View Article
The product “A” in the above reaction is:
The product “A” in the above reaction is: Answer: (b) Hence the answer is b
Hoffmann bromamide degradation of benzamide gives product A, which upon heating with CHCl3 and NaOH gives product B. The structures of A and B are:
Hoffmann bromamide degradation of benzamide gives product A, which upon heating with CHCl3 and NaOH gives product B. The structures... View Article
With respect to drug-enzyme interaction, identify the wrong statement.
a. Allosteric inhibitor competes with the enzyme’s active site b. Competitive inhibitor binds to the enzyme’s active site c. Non-competitive inhibitor... View Article
Which of the following is an aromatic compound?
Which of the following is an aromatic compound? Answer: (a) hence the answer is 6
Reducing smog is a mixture of:
a. Smoke, fog and N2O3 b. Smoke, fog and O3 c. Smoke, fog and SO2 d. Smoke, fog and CH2=CH–CHO... View Article
Which of the following reaction is an example of ammonolysis?
Which of the following reaction is an example of ammonolysis? a. C6H5CH2CN → C6H5CH2CH2NH2 b. C6H5COCl + C6H5NH2 → C6H5CONHC6H5... View Article
The absolute value of the electron gain enthalpy of halogen satisfies:
a. I > Br >Cl> F b. F >Cl> Br > I c. Cl> F > Br > I d.... View Article
A colloidal system consisting of a gas dispersed in a solid is called a/an:
a. Aerosol b. Solid Sol c. Foam d. Gel Answer: (b) Dispersed phase Dispersion medium Type of colloid Gas Solid... View Article
The correct order of conductivity of ions in water is:
The correct order of conductivity of ions in water is: a. Cs+>Rb+> K+> Na+ b. K+> Na+> Cs+>Rb+ c. Rb+>... View Article
The reaction given below requires which of the following reaction conditions:
The reaction given below requires which of the following reaction conditions: a. 623 K, 300 atm b. 573 K,... View Article
The point of intersection and sudden increase in the slope, in the diagram given below respectively, indicates:
The point of intersection and sudden increase in the slope, in the diagram given below respectively, indicates: a. ΔG =... View Article
