p block
why BiF3 is ionic whereas other trihalides are covalent in nature?
Elaborate the structure of a DNA molecule?
Choose the right answer from following. If two substances A and B have P0A P0B= 1:2 and have mole fraction in solution 1 : 2 then mole fraction of A in vapours: (a) 0.33 (b) 0.25 (c) 0.52 (d) 0.2
Unit of measurement- These are also some systems for units: (1)
What do you mean by the term hydra? Briefly define it.
what is the meaning of fourth power of valency of an active ion?
is entropy on moleculare basis relates to the tras.,vib.,and rotational motions?
Explain what is octet rule in chemistry?
37% weight of HCl and density is 1.1g/ml. find molarity of HCl
Provide solution of this question. A 5 molar solution of H2SO4 is diluted from 1 litre to 10 litres. What is the normality of the solution : (a) 0.25 N (b) 1 N (c) 2 N (d) 7 N
What do you mean by the term tripod? Also state its uses?
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