Which element has similar properties to Beryllium?
The elements in the same column will have similar properties. Beryllium is the group II element. Group II elements are magnesium, calcium, strontium, barium and radium. Hence, these show the similar prperties.
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7 C in the R?
The given letter equation implies that,
7 C in the R = 7 Colours in a Rainbow.
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Which is not include in the private income arising in a country
The degree of dissociation (α) of a weak electrolyte, AxBy is related to van't Hoff factor (i) by the expression:
1. α=x+y+1i-1
2.α=x+y-1i-1
3. α=i-1x+y+1
4. α=i-1x+y-1
Van't Hoff factor (i) = Observed Colligative PropertyNormal Colligative Property
AxBy1-α→xA+yxα+yB-xyα
Total Moles = 1-α+xα+yα = 1-αx+y-1
i=1+αx+y-11
⇒α=i-1x+y-1
A piece of ice is floating in water kept in a beaker. When all the ice melts the level of water will
The submerged portion of the ice on melting shrinks a little in volume. so the level of water goes down a little.But this is just made up by the water added by the melting of upper portion. Addition is equal to the Shrinkage. Hence level is unchanged.
Who wrote the social contract?
Jean-Jacques Rousseau (1712–1778), in his influential 1762 treatise The Social Contract, outlined a different version of social contract theory, as the foundations of political rights based on unlimited popular sovereignty.
Permanent hardness of water is due to the presence of ?
Who was the only Secretary General of the UNO to have died while in office ?
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