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JEE 2020 Chemistry Revision Quiz :Mole Concept and Stoichiometry
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Question 1
Dalton’s atomic theory agrees with modern atomic theory except for the statement that
Question 2
The fundamental “particle” of a chemical element according to Dalton’s theory is the
Question 3
What contribution did John Dalton make to atomic theory ?
Question 4
The empirical formula of an acid is CH2O2, the probable molecular formula of acid may be:
Question 5
An aromatic compound ‘A’ having molecular formula C7H6O2 on treating with aqueous ammonia and heating forms compound ‘B’. The compound ‘B’ on reaction with molecular bromine and potassium hydroxide provides compound ‘C’ having molecular formula C6H7N. The structure of ‘A’ is
Question 6
The amount of sugar (C12H22O11) required to prepare 2L of its 0.1 M aqueous solution is:
Question 7
The prefix of the fraction 10-12 and its symbol respectively are
Question 8
The ratio of number of oxygen atoms(O) in 16.0 g ozone (O3) , 28.0 g carbon monoxide (CO) and 16 .0g oxygen (O2) is -
(Atomic mass: C=12, O=16 and Avogadro’s constant NA=6 .0x1023mol-1)
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May 8JEE & BITSAT
