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why does evaporation causes cooling
The number of electrons in the valence shell of calcium is: (1) 6 (2) 8 (3) 2 (4)4 Ans: 2
What are laws of crystallography? How does it help in study of crystal structure?
what is formox what does it do and is it good or bad for environment
Which of the following sets of quantum numbers represent an impossible arrangement: n l m m2 (1) 3 2 - 2 (+)
why do we add HCl in common ion effect of II froup
An isostere is: (1) NO -2 and O 3 (2) No -2 and PO 3- 4 (3) CO 2, N 2 O, NO - 3 (4)Clo - 4 and OCN - Ans: NO -2
what i am writing about this
Alkali metals belong to S-block ? why?
When atoms are bombarded with alpha particles, only a few in n, others pass out undeflected. This is because : (1) The nucleus occupies much smaller volume compared to the volu
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