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Which of the following statements is not true for ionic compoundss:
(1) High melting point
(2) Least lattice energy
(3)Least solubility in organic compounds
(4) Soluble in water
Ans: Least lattice energy
If an electron has spin quantum number of +1/2 and a magnetic quantum number of -1 , it cannot be presented in an: (1) d -orbital (2) f -orbital (3) p -orbital (4)s-
Number of unpaired electrons in Mn 4+ is: (1) 3 (2) 5 (3) 6 (4) 4 Ans: 3
explain diversity and magnitude of organic compounds?
Name a substance which on addition to AgCl causes vacation vacancy in it. Mention a large scale use of the phenomenon called 'reverse osmosis'.
principle of qualitative analysis of funcional group
What are the basic physical and chemical properties of this group
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function of citric acid in human body
1. A sample of water contains: suspended matter = 100 mg; Ca(NO3)2 = 16.4 mg/L; MgSO4 = 24 mg/L; MgCl2 = 19 mg/L; NaOH = 40 mg/L and KOH = 56 mg/L. Calculate temporary, permanent a
As electron moves away from the nucleus, its potential energy: (1) Increases (2) Decreases (3) Remains constant (4) None of these Ans: Increases
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