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Chapter 11 - Heat and Thermodynamics - 8
1.
Monoatomic molecules contains?
a) many atoms
b) three atoms
c) single atom
d) two atoms
2.
Which of the following are monoatomic molecules?
a) halogens
b) alkali met
c) noble gases
d) hydrocarbons
3.
Which one of the following substances are molecular in nature?
a) all of these
b) proteins
c) carbohydrates
d) lipids
4.
The basic building blocks of all the substances in the universe are?
a) halogens
b) elements
c) compounds
d) noble gases
5.
The pure substance that contains two or more elements in fixed proportions is called as?
a) subatomic particle
b) atom
c) compound
d) element
6.
Which one of the following is Not a compound?
a) Sodium chloride
b) Copper sulphate
c) Sodium
d) Carbon dioxide
7.
Which one of the following has a uniform composition?
a) compound
b) element
c) both of these
d) none of these
8.
The properties of carbon dioxide are?
a) same to carbon only
b) same to carbon and oxygen
c) same to oxygen only
d) different from carbon and oxygen
9.
Which one of the following is a mixture?
a) air
b) table salt dissolved in water
c) all of these
d) water containing dissolved oxygen
10.
An impure substance that contains two or more pure substances that retain thier individual chemical properties is known as?
a) mixture
b) compound
c) solution
d) element
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