Integrated Science

Question 1

1Which gas is given off during photosynthesis?

Easy

A. oxygen B. hydrogen C. carbon dioxide D. nitrogen

Question 2

2Which disease mainly damages the alveoli and is strongly linked with smoking?

Easy

A. cholera B. malaria C. scurvy D. emphysema

Question 3

3Toothpaste is slightly alkaline to

Easy

A. increase acidity B. neutralise acids produced by mouth bacteria C. kill all saliva D. add colour

Question 4

4Crude oil is separated into fractions such as petrol and diesel by

Easy

A. fractional distillation B. chromatography C. evaporation D. filtration

Question 5

5The lungs excrete

Easy

A. bile pigments B. urea C. carbon dioxide and water vapour D. excess salt

Question 6

6A 60 W bulb is used for 5 hours. Energy used is

Hard

A. 300 kWh B. 12 kWh C. 0.3 kWh D. 3 kWh

Question 7

7Gaseous exchange in the lungs takes place in the

Hard

A. alveoli B. bronchi C. larynx D. trachea

Question 8

8Fractional distillation separates liquids by differences in

Hard

A. density B. colour C. solubility D. boiling point

Question 9

9In an experiment testing the effect of fertiliser on plant height, the controlled variables include

Hard

A. the result B. water, light and plant type C. fertiliser amount D. plant height

Question 10

10The central nervous system is made up of the

Easy

A. nerves of the arms B. eyes and ears C. heart and lungs D. brain and spinal cord