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1.
Select incorrect statement
2.
The relation between molecular weight 
and vapour density 
is:
and vapour density is:
3.
Analysis shows that an oxide ore of nickel has formula
The percentage of nickel as 
ions is nearly
The percentage of nickel as ions is nearly
4.
In the calcium fluoride structure, the coordination number of the cation and anion are respectively
5.
In deriving the kinetic equation we make use of the root mean square speed of the molecules which is:
6.
Bravais lattices are of
7.
One poise is equal to:
8.
The rate of diffusion of hydrogen is about
9.
The pressure of 2 moles of ammonia at 
when its volume is 5 L according to van der Waals' equation is (Given, 
)
when its volume is 5 L according to van der Waals' equation is (Given, )
10.
The gases in the liquid form are held together by a weak attraction among the molecules, called as: