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Chapter 11 - Heat and Thermodynamics - 15
1.
Formula mass of Mg(OH)
2
is?
a) 8 amu
b) 32 amu
c) 58 amu
d) 24 amu
2.
Which one of the following is the use of NaCl?
a) preserve the meat
b) all of these
c) gives flavour to food
d) used in the preparation of large number of compounds
3.
KClO
3
is the formula of?
a) potassium chloride
b) none of these
c) potassium chlorate
d) potassium permenganate
4.
The formula mass of KClO
3
is?
a) 48 amu
b) 100 amu
c) 122 amu
d) 98 amu
5.
Formula mass of NaHCO
3
is?
a) 34 amu
b) 100 amu
c) 84 amu
d) 80 amu
6.
Which one of the following is used as fertilizer?
a) both of these
b) none of these
c) ammonium nitrate
d) urea
7.
The smallest particle of an element that can't exist in free state is known as?
a) molecule
b) compound
c) isotope
d) atom
8.
An atom is electrically?
a) possitively charged
b) negatively charged
c) neutral
d) none of these
9.
Cations are?
a) all of these
b) possitively charged
c) neutral
d) negatively charged
10.
Anions are charged?
a) neutral
b) negatively
c) possitively
d) none of these
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