LABORATORY TECHNIQUES EXAMINATION QUESTIONS
AND CORRECT ANSWER WITH EXPLANATION GRADED
A+ STUDY GUIDE SOUTHERN NEW HAMPSHIRE
UNIVERSITY
1. Laboratory techniques refer to:
A. Methods used in scientific experiments
B. Cooking methods
C. Driving skills
D. Farming tools only
Answer: A
Rationale: They are procedures used in laboratory work.
2. A microscope is used to:
A. View small objects
B. Measure weight
C. Heat samples
D. Mix chemicals
Answer: A
Rationale: Magnifies tiny structures.
3. The basic unit of a microscope is:
A. Objective lens
B. Thermometer
C. Beaker
D. Pipette
Answer: A
Rationale: Lenses provide magnification.
4. The eyepiece is also called:
A. Ocular lens
B. Objective lens
C. Stage
D. Condenser
Answer: A
Rationale: The viewing lens.
,5. The stage of a microscope holds:
A. The specimen slide
B. The light source
C. The lens only
D. The battery
Answer: A
Rationale: Supports sample placement.
6. A pipette is used to:
A. Measure and transfer liquids
B. Heat chemicals
C. Crush solids
D. Filter gases
Answer: A
Rationale: Accurate liquid handling.
7. A burette is used in:
A. Titration
B. Heating
C. Drying
D. Freezing
Answer: A
Rationale: Precise liquid dispensing.
8. A beaker is used for:
A. Mixing and holding liquids
B. Measuring exact volume
C. Heating metals only
D. Weighing samples
Answer: A
Rationale: General-purpose container.
9. A conical flask is used for:
A. Titration reactions
B. Drying samples
C. Measuring mass
D. Cutting samples
Answer: A
Rationale: Minimizes spillage in mixing.
, 10. A test tube is used for:
A. Small-scale reactions
B. Large storage
C. Measuring distance
D. Weighing solids
Answer: A
Rationale: Small reaction vessel.
11. A centrifuge separates substances based on:
A. Density
B. Color
C. Shape
D. Temperature
Answer: A
Rationale: Spinning separates components.
12. Filtration separates:
A. Solid from liquid
B. Gas from solid
C. Liquid from gas
D. Heat from cold
Answer: A
Rationale: Removes insoluble particles.
13. The filtrate is:
A. Liquid that passes through filter
B. Solid residue
C. Gas formed
D. Heat produced
Answer: A
Rationale: Filtered liquid.
14. The residue is:
A. Solid left after filtration
B. Liquid collected
C. Gas released
D. Heat energy
Answer: A
Rationale: Material retained on filter.
AND CORRECT ANSWER WITH EXPLANATION GRADED
A+ STUDY GUIDE SOUTHERN NEW HAMPSHIRE
UNIVERSITY
1. Laboratory techniques refer to:
A. Methods used in scientific experiments
B. Cooking methods
C. Driving skills
D. Farming tools only
Answer: A
Rationale: They are procedures used in laboratory work.
2. A microscope is used to:
A. View small objects
B. Measure weight
C. Heat samples
D. Mix chemicals
Answer: A
Rationale: Magnifies tiny structures.
3. The basic unit of a microscope is:
A. Objective lens
B. Thermometer
C. Beaker
D. Pipette
Answer: A
Rationale: Lenses provide magnification.
4. The eyepiece is also called:
A. Ocular lens
B. Objective lens
C. Stage
D. Condenser
Answer: A
Rationale: The viewing lens.
,5. The stage of a microscope holds:
A. The specimen slide
B. The light source
C. The lens only
D. The battery
Answer: A
Rationale: Supports sample placement.
6. A pipette is used to:
A. Measure and transfer liquids
B. Heat chemicals
C. Crush solids
D. Filter gases
Answer: A
Rationale: Accurate liquid handling.
7. A burette is used in:
A. Titration
B. Heating
C. Drying
D. Freezing
Answer: A
Rationale: Precise liquid dispensing.
8. A beaker is used for:
A. Mixing and holding liquids
B. Measuring exact volume
C. Heating metals only
D. Weighing samples
Answer: A
Rationale: General-purpose container.
9. A conical flask is used for:
A. Titration reactions
B. Drying samples
C. Measuring mass
D. Cutting samples
Answer: A
Rationale: Minimizes spillage in mixing.
, 10. A test tube is used for:
A. Small-scale reactions
B. Large storage
C. Measuring distance
D. Weighing solids
Answer: A
Rationale: Small reaction vessel.
11. A centrifuge separates substances based on:
A. Density
B. Color
C. Shape
D. Temperature
Answer: A
Rationale: Spinning separates components.
12. Filtration separates:
A. Solid from liquid
B. Gas from solid
C. Liquid from gas
D. Heat from cold
Answer: A
Rationale: Removes insoluble particles.
13. The filtrate is:
A. Liquid that passes through filter
B. Solid residue
C. Gas formed
D. Heat produced
Answer: A
Rationale: Filtered liquid.
14. The residue is:
A. Solid left after filtration
B. Liquid collected
C. Gas released
D. Heat energy
Answer: A
Rationale: Material retained on filter.
