EASY
JEE Main
IMPORTANT
Earn 100
Amongst the following statements, that which was not proposed by Dalton was :
67.16% studentsanswered this correctly
Important Questions on Some Basic Concepts of Chemistry
MEDIUM
JEE Main
IMPORTANT
A compound with molecular mass is acylated with to get a compound with molecular mass . The number of amino groups presents per molecule of the former compound is
MEDIUM
JEE Main
IMPORTANT
A gaseous hydrocarbon on combustion gives of water and . What is the empirical formula of the hydrocarbon?
EASY
JEE Main
IMPORTANT
The ratio of masses of oxygen and nitrogen in a particular gaseous mixture is 1 : 4. The ratio of number of their molecules is:
EASY
JEE Main
IMPORTANT
The average molar mass of chlorine is . The ratio of to in naturally occurring chlorine is close to :
EASY
JEE Main
IMPORTANT
In an estimation of bromine by Carius method, of an organic compound gave of . The mass percentage of bromine in the compound is
Atomic mass,
MEDIUM
JEE Main
IMPORTANT
The minimum number of moles of required for complete combustion of 1 mole of propane and 2 moles of butane is..............(Nearest integer)
MEDIUM
JEE Main
IMPORTANT
The molecular formula of a commercial resin used for exchanging ions in water softening is . What would be the maximum uptake of ions by the resin if expressed in per ?
HARD
JEE Main
IMPORTANT
In Carius method of estimation of halogens, of an organic compound gave . What is the percentage of bromine in the compound (atomic mass of and atomic number of )?
