Question Text
Question 1 :
The number of atoms in 0.1 mol of a triatomic gas is:
Question 5 :
What volume of 0.232 N solution contains 3.17 milliequivalent of solute?
Question 7 :
$0.75\ g$ platinic chloride of a mono-acid base on ignition gave $0.245\ g$ platinum. The molecular weight of the base is
Question 8 :
The atomicity of a species is $x$ and its atomic weight is $y$. The molecular weight of the species is:<br/>
Question 10 :
How many moles of calcium carbonate $(CaCO_3)$ are present in 20 g of the substance? ($Ca = 40,\ C = 12,\ O = 16$)
Question 11 :
Radius of the nucleus is about ............. times less than the radius of the atom.<br/>
Question 15 :
The fundamental particle which has no charge and has mass almost equal to that of positively charged fundamental particle is ..............
Question 17 :
<p>Which one of these elements does not have its valence shell fully filled?</p>
Question 18 :
Total no. of electrons present in $48$ g of $Mg^{2+}$ are:
Question 19 :
On the basis of Rutherford's model of an atom, which sub-atomic particle is present in the nucleus of an atom?
Question 20 :
Three elements A, B and C have 3, 4 and 2 electrons respectively in their outermost shell. Their valencies respectively are:<br/>