General Science Multiple Choice Assessment
Published:
5. The structure in the human body which stores glycogen is
A. ileum.
B. liver.
C. lungs.
D. pancreas.
6. Which of the following tissues contains deoxygenated blood?
A. Pulmonary artery
B. Hepatic artery
C. Left atrium
D. Left ventricle
7. Which of the following elements is a semi-conductor?
A. Aluminium
B. Boron
C. Copper
D. Silicon
8. Beta decay involves the emission of
A. electrons.
B. gamma rays.
C. helium nuclei.
D. neutrons.
9. Which of the following statements describes the function of organic matter in the soil? It
A. supplies only macronutrients.
B. improves soil texture.
C. controls harmful bacteria in the soil.
D. increases soil acidity.
10. A machine is rated $160 \text{ W}$. If it does some amount of work in $5.0 \text{ s}$, determine the amount of work done by the machine.
A. $32 \text{ J}$
B. $320 \text{ J}$
C. $400 \text{ J}$
D. $800 \text{ J}$
11. Introduction of a trivalent element into a tetravalent element
I. is known as doping.
II. forms an n-type semi-conductor.
III. forms a p-type semi-conductor.
A. I and II only
B. I and III only
C. II and III only
D. I, II and III
12. Which part of the human sperm carries genetic material?
A. Acrosome
B. Middle piece
C. Nucleus
D. Cap
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Step by Step Written Solution
Let's solve question number ten. A machine is rated at one hundred sixty watts. If it does work for five seconds, we need to determine the total amount of work done.
Physics: Work and Power
First, let's identify the given values from the problem statement.
Given Data
Recall the fundamental relationship between power, work, and time. Power is defined as the rate at which work is done.
To find the work done, represented by W, we can rearrange this formula by multiplying both sides by time.
Now, we substitute our given values into the equation: one hundred sixty watts for power and five seconds for time.
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