Miscellaneous-Mixed Worksheet-5

Miscellaneous Worksheet-5

1. A ______ is the combination of two or more atoms.

(a) Volume        (b) Molecule     (c) chemical bond

2. The periodic table is a table for the _____

(a) Matter          (b) Rocks          (c) Elements     (d) chemistry

3. Which pair of plants describes the smallest and largest plant in the world?

(a) The cactus and the pine tree.

(b) The water fern and the sequoia tree.

(c) Grass and the elm tree.

(d) None of these.

4. A gene that covers up another gene is

(a) Polygenic     (b) Marked        (c) Recessive     (d) passive

5. What was the main cause of air pollution?

(a) burning coal

(b) lighting matches

(c) Fires

6. Smog is caused by combining which of the following two gases?

(a) smoke and oxygen

(b) smoke and hydrogen

(c) smoke and fog

7. The genetic makeup of an organism is its

(a) hair colour                               (b) Genotype

(c) facial shape                             (d) heredity

8. What does DNA do?

(a) Makes food.                             (b) Determines traits.

(c) Converts food to energy.       (d) Stores substances.

9. The type of a volcano is determined by

(a) the material ejected during eruptions

(b) the location of the volcano

(c) none of these

10. What is the membrane surrounding the lungs?

(a) pleural membrane                 (b) carcinogenic membrane

(c) celluloid membrane              (d) respiratory membrane

Answer Key:

1. (b)
2. (c)
3. (b)
4. (c)
5. (a)
6. (c)
7. (b)
8. (b)
9. (a)
10. (a)