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1.
The number of atoms present in 16 g of oxygen gas is:
2.
On analysis a certain compound was found to contain iodine and oxygen in the ratio of 254 g of iodine (at. mass 127) and 80 g oxygen (at. mass 16). What is the formula of the compound?
3.
The vapour density of a volatile chloride of a metal is 95 and the specific heat of the metal is 0.13 cal/g. The equivalent weight of the metal will be:
4.
The equivalent weight of a certain trivalent element is 20. Molecular weight of its oxide is
5.
Gram molecular volume of oxygen at STP is
6.
Two elements 
(at. Wt. 75) and 
(at. wt. 16) combine to give a compound having 75.8% of . The formula of compound will be
(at. Wt. 75) and (at. wt. 16) combine to give a compound having 75.8% of . The formula of compound will be
7.
The amount of oxalic acid (hydrated) required to prepare 500 mL of its 0.1 
solution is:
solution is:
8.
The equivalent weight of 
for acid solution is
for acid solution is
9.
Consider a titration of potassium dichromate solution with acidified Mohr's salt solution using diphenylamine as indicator. The number of moles of Mohr's salt required per mole of dichromate is
10.
A mixture of 
and 
is enclosed in a vessel of one litre capacity at 
. The ratio of particle pressures of gases is 1 : 4 : 2. Total pressure of the gaseous mixture is 2660 mm. the number of molecules of oxygen present in the vessel is
and is enclosed in a vessel of one litre capacity at . The ratio of particle pressures of gases is 1 : 4 : 2. Total pressure of the gaseous mixture is 2660 mm. the number of molecules of oxygen present in the vessel is