Preparation and Steps for Tube Experiment

The video tutorial guides viewers through an experiment involving mung beans and boiling tubes. It starts with labeling the tubes and preparing the mung beans. Water is added to specific tubes, and one tube receives boiled water and paraffin oil. Tube B is refrigerated, while others are covered and left in a warm place. After a few days, the germination of mung beans is observed and recorded.

What is the first step in preparing the boiling tubes for the experiment?

• Cover the tubes with a box

• Place the tubes in a refrigerator

• Label the tubes from A to D

• Add water to all tubes

Which tubes are covered with a light-proof box and left in a warm place?

• Tubes A, B, and C

• Tubes B, C, and D

• Tubes A, C, and D

• Tubes A, B, and D

What is added to tube C after boiled water?

• A layer of paraffin oil

• More mung beans

• Cold water

• Dry cotton wool

Where is tube B placed after preparation?

• In a warm place

• In a refrigerator

• In direct sunlight

• In a dark cupboard

What is the final step in the experiment?

• Refrigerate all tubes

• Remove the paraffin oil

• Count the germinated beans and calculate germination percentage

• Add more water to the tubes