INTRODUCTION TO SCIENCE

Which of the following states why science is studied?
1. To perform profitable activities
2. To understand our environment better
3. To educate our older generation better
4. To raise fund for charity
The branches of study include
I Chemistry
II Biotechnology
III Forestry
1. I and II only
2. I and III only
3. II and III only
4. I, II and III
“Science enables men to communicate the quickest when required.” Which of the following field most likely helps men in the sector stated?
1. Food industry
2. Medicine
3. Information technology
4. Pharmaceuticals
Which of the following is NOT a laboratory safety rule?
1. Do not taste any chemicals
2. Do not throw solid wastes into the sink
3. Read the label on every reagent bottle before using its contents
4. Pour back any unused chemical into its container to avoid wastage
Which of the following statements describes a science laboratory accurately?
1. A place where chemicals and apparatus are sold
2. A place where teachers keep their science practical books
3. A place where details on scientific investigations are kept
4. A place where scientific investigations are carried out
Which of the following glassware is usually used to heat substances in the school laboratory?
I Beakers
II Boiling tubes
III Measuring cylinder
1. I and II only
2. I and III only
3. II and III only
4. I, II and III
Figure below shows a laboratory apparatus. Which of the following describes the use of the apparatus accurately?
1. To support other apparatus
2. To hold liquids or chemicals
3. To measure a fixed volume of a liquid
4. To measure a large volume of a liquid
Which of the following is NOT true?
1. A retort stand is used for clamping apparatus
2. A Bunsen burner is used for heating things
3. A measuring cylinder is used for carrying out reactions
4. A test tube holder is used for holding a test tube while heating
A suggested explanation for a problem being investigated is called
1. Conclusion
2. Theory
3. Report
4. Hypothesis
Which of the following is hypothesis?
I The species of a rat and a mouse is not the same
II The concentration of acid affects the rate of reactions
III The presence of sunlight affects the growth of a plant
1. I & II only
2. I & III only
3. II & III only
4. I, II and III
P – Make a hypothesis
Q – Collect data
R – Identify the problem
S – Analyse and interpret data
T – Plan the experiment
U – Make a conclusions
The above information shows the step in scientific investigations. The correct sequence is?
1. P,T,Q,S,R,U
2. R,P,T,Q,S,U
3. T,Q,S,P,R,U
4. T,P,R,Q,U,S
Which of the following should be done if a hypothesis is rejected in an experiment?
I A new hypothesis has to be made
II The data has to be analyses again
III More data have to be collected
1. I only
2. I and II only
3. II and III only
4. I, II and III
In a scientific investigation, before making a conclusion you must
1. Write a report
2. Write down what has been observed
3. Find a meaning to what has been observed
4. Decide whether the smart guess you made earlier is true
Which of the following is the SI unit for length?
1. km
2. m
3. dm
4. mm
Kelvin is the SI unit for the measurement of
1. volume
2. mass
3. electric current
4. temperature
Which of the following represents the prefix value of milli?
1. 0.1
2. 0.01
3. 0.001
4. 0.0001
Which of the following statements is true about mass?
I The SI unit of mass is kilogram
II Mass varies with the different gravity pull at different places
III Mass of an object is usually about 10 times less than its weight on Earth
1. I and II only
2. I and III only
3. II and III only
4. I, II and III
The mass of Ani's body is 38kg at location P on earth.
Ajita weights 400N at the same location.
What is the average of Ani's and Ajita's body weight at the same location?
1. 39N
2. 219N
3. 390N
4. 780N
When taking the reading of an object's length using a ruler, parallax error may occur. Which of the following can cause a parallax error?
1. Wrong positioning of the eye from the ruler
2. Placing the ruler exactly on the object
3. Using a long ruler
4. Using a wooden ruler
What is the importance of measuring quantities using standard units?
I To ensure that measurements are accurate
II To ensure that measuremants are universal
III To enable international businesses
1. I and II only
2. I and III only
3. II and III only
4. I, II and III