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Chapter 11 - Heat and Thermodynamics - 12
1.
The molecular formula of glucose is?
a) C
2
HO
b) C H
2
O
c) C
6
H
12
O
6+
d) CHO
2.
Which type of chemical formula gives us the simplest number of atoms of each element in a compound?
a) structural formula
b) molecular formula
c) empirical formula
d) none of these
3.
The actual number of atoms of each element in a molecule of a compound is given by?
a) structural formula
b) all of these
c) molecular formula
d) empirical formula
4.
Benzene contains 6 carbon and 6 hydrogen atoms. What is the empirical formula of benzene?
a) CH
b) C
6
H
c) C H
6
d) C
6
H
6
5.
H
2
O is the ___ of water?
a) molecular formula
b) both are correct
c) empirical formula
d) none of these
6.
Molecular formula of benzene is?
a) C
6H
b) C H
6
c) CH
d) C
6
H
6+
7.
Empirical formula of carbon dioxide is?
a) CO
2+
b) C
2
O
c) C
2
O
4
d) CO
8.
If a compound contains carbon to hydrogen atoms in the ratio of
2:6, its empirical formula would be?
a) C H
3+
b) CH
c) C
2
H
6
d) C
3
H
9.
Which one of the following compounds have the same molecular and empirical formulas?
a) all of these
b) sulphur dioxide
c) methane
d) ammonia
10.
If a compound contains carbon to hydrogen in the ratio of 6:6, its empirical formula would be?
a) C
2
H
3
b) C H
6
c) C
6
H
6
d) CH
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