Lab Preparation and Microscope Usage Quiz

What is the minimum magnification required to see objects 0.2 μm wide with a light microscope?

• 100 times

• 200 times

• 500 times

• 1000 times

What happens when you turn the stage knobs to move the slide?

• The image moves in the same direction

• The image rotates 180 degrees

• The image moves in the opposite direction

• The image remains stationary

What conclusion can be drawn if there is no color change in a test tube?

• Absence of protein

• Presence of protein

• Presence of carbohydrates

• Presence of lipids

What is added to Tube #2 in the experiment?

• Starch solution

• Egg albumin solution

• Glucose solution

• Water only

What is the main conclusion of a negative Biuret Test?

• Near absence of protein

• Presence of protein

• Presence of carbohydrates

• Presence of lipids

How many milliliters of starch suspension are placed in tube #1?

• 1 ml

• 2 ml

• 5 ml

• 10 ml

What is the suggested action if your conclusion is correct?

• Celebrate your success

• Repeat the experiment

• Discard the solution

• Ignore the results

What is the volume of glucose solution placed in tube #2?

• 1 ml

• 2 ml

• 5 ml

• 10 ml

What are the products formed when sodium hydroxide reacts with hydrochloric acid?

• Sodium chloride and water

• Sodium hydroxide and hydrogen

• Hydrochloric acid and oxygen

• Sodium and chlorine gas

Which of the following is a strong base?

• Hydrochloric acid

• Sodium hydroxide

• Water

• Ammonia