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Draw temperature composition phase diagram for binary System?
Use the following information to draw a temperature-composition phase diagram for the binary system of H2O (A) and Na2SO4 (B) at p = 1 bar, confining t to the range 20 to 50 C and zB to the range 0-0.2. The solid decahydrate, Na2SO4. 10H2O, is stable below 32.4°C. The anhydrous salt, Na2SO4, is stable above this temperature. There is a peritectic point for these two solids and the solution at xB = 0.059 and t = 32.4°C. There is a eutectic point for ice, Na2SO4 .10H2O, and the solution at xB = 0.006 and t = 1.3°C.
The atomic number of an element is 35 and mass number is 81. The number of electrons in the outer most shell is: (1) 7 (2) 6 (3) 5 (4) 3 Ans: 7
In a Bohr's model of atom when an electron jumps from n= 1 to n= 3 , how much energy will be emitted or absorbed: (1) 2.15 x10 -11 erg (2) 0.19
Anomalous behaviour of Beryllium
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Q. Name the types of food in which onion or garlic can be used for imparting health benefit. Bakery products, imitation meats and sausages and meat pies are the types of foods
Which of the following explains the sequence of filling the electrons in different shells: (1) Hund's rule (2) Octet rule (3) Aufbau principle (4) All of these Ans
Q. Explain the working of chemical cell ? Ans. A chemical cell can be set up by dipping two different metals in an electrolyte and connecting the two metals with an external
Which of the following represents the electronic configuration of an element with atomic number 17: (1) 1s 2, 2s 2 , 2p 6 , 3s 1, 3p 6 (2) 1s 2 , 2s 2 , 2p
Write a reaction for which the enthalpy change will be (delta H) for solid aluminum oxide.
PHOTO CHEMICAL COMBINATION OF HYDROGEN&IODINE
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