Chloroacetic acid is more acidic than acetic acid because of the - M effect.
1287 Views
12.
Correct the following statements:
When acetone is treated with bleaching powder, acetaldehyde is obtained.
651 Views
13.The molecular weights of sodium chloride and glucose are determined by the Depression of freezing point method. Compared to their theoretical molecular weights, what will be their observed molecular weights when determined by the above method ? Justify your answer.
620 Views
14.An aqueous solution containing 1.70 g of cane sugar in 100 ml water begins to freeze at – 0.093°C. The cryoscopic constant (molal depression constant) of water is 1.86 K Kg mole– 1. Calculate the molecular weight of cane sugar.
629 Views
Advertisement
15.A decinormal solution of sodium chloride exerts an osmotic pressure of 4.82 atmosphere at 27°C. Calculate the degree of dissociation of sodium chloride.
1881 Views
16.The half life of a radioactive isotope is 10 hours. How many atoms of this isotope will be left after 4 hours if initially 1 gm mole of the radioactive isotope was taken ?
365 Views
17.90Th234 emits 7alpha particles and 6 beta particles. What will be the atomic number and mass number of the resulting atom.
547 Views
18.What is the function of the moderator and the control rod in nuclear reactor ?
550 Views
Advertisement
19. The melting point of pure silver and pure lead is 961°C and 327°C respectively. A molten mixture of the two metals on cooling at a constant temperature forms a eutectic mixture with a composition of approximately 5% silver and 95% lead at 305°C. Draw a schematic phase diagram for the silver-lead system. Label all the parts of the diagram. Indicate the number of components, phases and degrees of freedom present at the eutectic point.
20.An aqueous solution of an organic compound contains 10 g of solute per litre. When 1 litre of this solution is treated with 100 ml of ether, 6 g of the organic solute is extracted. How much of the solute will be extracted from the aqueous solution by adding further 100 ml of ether ? (Assume that the molecular state of the solute is the same in ether and water.)
Short Answer Type
Switch
