Identification of Gas

Which of the following is a hydrocarbon?

• Methane

• Oxygen

• Carbon Dioxide

• Water

What is the main component of natural gas?

• Methane

• Carbon Dioxide

• Oxygen

• Water

What is the color change observed when chlorine gas is tested with damp litmus paper?

• A) Blue to red

• B) Red to blue

• C) Blue to white

• D) Red to white

Which of the following gases is identified by its ability to extinguish a glowing splint?

• Oxygen

• Carbon dioxide

• Hydrogen

• Ammonia

What is the main focus of qualitative sampling?

• Determining the quantity of chemicals

• Identifying which chemicals are present

• Measuring the volume of chemicals

• Calculating the concentration of chemicals.

What does the triangle diagram in the image represent?

• Chemical bonding

• Quantitative analysis relationships

• Qualitative analysis methods

• Chemical reaction pathways.

Which of the following is a focus of quantitative sampling?

• Observing chemical colors

• Measuring chemical quantities

• Identifying chemical types

• Describing chemical textures

Which of the following is a key difference between qualitative and quantitative sampling?

• Qualitative focuses on quantity, quantitative on quality

• Qualitative uses observation, quantitative measures amount

• Qualitative measures amount, quantitative uses observation

• Qualitative and quantitative are the same.

What type of delivery is used for gases that are lighter than air?

• Upward delivery

• Downward delivery

• Over water

• None of the above

Where should the mineral wool plug be placed in the test tube during the preparation of oxygen gas?

• 1 cm below the rim

• At the bottom

• At the top

• 2 cm below the rim