Question

1.The percentage of copper and oxygen in samples of CuO obtained by different

methods were found to be the same. The illustrate the law of:

a)Constant proportion b)Conservation of mass

c)Multiple proportions d)Reciprocal proportions

2. Adding electrons to an atom will result in a (an):

a)Molecule ` b)Anion

c)Cation d)Salt

3. Which of the following represents a correct chemical formula? Name it.

a) CaCl b) BiPO4

c) NaSO4 d) NaS

4. The work done by a force on 50 kg body in order to accelerate it from rest to 2.4

ms-1

in 10 s:

a) 144 J b) 14.4 J `c) 1.44 J d) 1200 J

5. 1 KWh is equal to

a) 36 x 105

J b) 3.6 x 105

J c) 1 unit d) both a and c​

Answer 1

Answer:

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Answer 2

Answer:

1 - d

2- c

3- b

4- c

d- c

Explanation:

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