1. which of the following is an example of a gas solution?
a. Carbon dioxide b. Air c.Oxygen d.Nitrogen
2.what mixture has a uniform composition and exist in single form?
a.matter b.Pure substance c.Homogeneous Mixture d.Heterogeneous Mixture
3.what is formed when two or more substances are combined?
a.mixture b.Pure substance c.matter d.solid matter
4.Colloids are heterogeneous mixtures. Which of these mixtures is not a colloid?
a.Shaving cream b.Mayonnise c.solf drink
d.Shampoo
5.what is known as the universal solvent?
a.alcohol b.water vapor c.Vinegar d.water
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Answer:
1.b 2.c 3.a 4.d 5.c
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