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Recent questions in Some Basic concepts in Chemistry
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Some Basic concepts in Chemistry
Which pair of species has same percentage of carbon?
jeemain
chemistry
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
percentage-composition
q7
easy
asked
Oct 22, 2013
by
sreemathi.v
1
answer
It is found that 16.5g of metal combine with oxygen to form 35.6g of metal oxide.Calculate the percentage of metal and oxygen in the compound.
jeemain
chemistry
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
percentage-composition
q6
easy
asked
Oct 22, 2013
by
sreemathi.v
1
answer
An unknown element forms an oxide.What will be the equivalent mass of the element if the oxygen content is 20% by mass ?
jeemain
chemistry
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
atomic-and-molecular-masses
q5
easy
asked
Oct 22, 2013
by
sreemathi.v
1
answer
A piece of copper weighs $0.635g.$How many atoms of copper does it contain?
jeemain
chemistry
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
mole-concept-and-molar-masses
q4
easy
asked
Oct 22, 2013
by
sreemathi.v
1
answer
$25g$ of $MCl_4$ contains $0.5\;mol$ chlorine then its molecular mass is
jeemain
chemistry
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
mole-concept-and-molar-masses
q3
easy
asked
Oct 22, 2013
by
sreemathi.v
1
answer
The maximum number of molecules present in :
jeemain
chemistry
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
mole-concept-and-molar-masses
q2
easy
asked
Oct 22, 2013
by
sreemathi.v
1
answer
3g of hydrocarbon on combustion with 11.2g of oxygen produce 8.8g of $CO_2$ and 5.4g of $H_2O$.The data illustrates the law of
jeemain
chemistry
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
laws-of-chemical-combinations
q1
easy
asked
Oct 22, 2013
by
sreemathi.v
1
answer
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