SPM drilling exercises

Table shows the results of an experiment to estimate the number of plant K in 10 quadrats each measuring 1m x 1m.

Calculate the frequency of plant K.

• 20%

• 40%

• 60%

• 80%

Table shows the results of an experiment to estimate the number of plant X in 10 quadrats each measuring 1m x 1m.

Calculate the frequency of plant X.

• 20%

• 40%

• 60%

• 100%

The following data is the result of an experiment to determine the energy value of a peanut. The specific heat capacity of water is 4.2 Jg^-1℃^-1. Calculate the energy value of the peanut.

• 1 680 Jg^-1

• 3 360 Jg^-1

• 7 560 Jg^-1

• 11 760 Jg^-1

A student carried out a study on the population of grass P in the school field. He used the quadrat sampling technique in the study. The area of each quadrat is 1 m². Table shows the result of the study. What is the percentage coverage of grass P in the school field?

• 22 %

• 37.8 %

• 2.27 %

• 3.78 %

Table shows the results of an activity carried out to investigate the frequency of Mimosa pudica at a school field. What is the frequency of Mimosa pudica?

• 12.6 %

• 40 %

• 60 %

• 86.5 %

Table shows the results of a study on the population of grass X in the school field. The area of each quadrat is 1 m²

What is the percentage coverage of grass X in the school field?

• 3.19 %

• 5.32 %

• 31.9 %

• 53.2 %

The following data is the result of an experiment to determine the energy value of a cashew nut. The specific heat capacity of water is 4.2 Jg^-1℃^-1. Calculate the energy value of the peanut.

• 8.0 kJ/g

• 8.4 kJ/g

• 0.1 kJ/g

• 0.84 kJ/g

The following shows the result of an experiment to determine the content of vitamin C in apple juice. What is the concentration of vitamin C in the apple juice?

• 1.25 mg cm^-3

• 8.00 mg cm^-3

• 0.125 mg cm^-3

• 0.800 mg cm^-3

The following information shows the results of an experiment to determine the oxygen content in exhaled air using a J-tube. What is the percentage of oxygen content in the exhaled air?

• 0.3 %

• 8.3 %

• 14.0 %

• 24. 0 %

The following information shows the results of an experiment to determine the oxygen and carbon dioxide content in an air sample. What is the percentage of carbon dioxide in this air sample?

• 4 %

• 13 %

• 16 %

• 21 %