Question
Why does a piece of paper burn with yellow flame? Give a reason.
✓
Answer
The inadequate supply of oxygen during the combustion of the piece of paper produces solid carbon particles that rise up in the flame. They become hot and glow to give off yellowish light. This makes the piece of paper burn with a yellowish flame.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Explain complete combustion.
Classify the following as elements, compounds, or mixtures in the Table.
Carbon dioxide, sand, seawater, magnesium oxide, muddy water, aluminum, gold, oxygen, rust, iron sulfide, glucose, air, water, fruit juice, nitrogen, sodium chloride, sulfur, hydrogen, and baking soda.
Identify pure substances amongst these and list them below.
Carbon dioxide, sand, seawater, magnesium oxide, muddy water, aluminum, gold, oxygen, rust, iron sulfide, glucose, air, water, fruit juice, nitrogen, sodium chloride, sulfur, hydrogen, and baking soda.
Identify pure substances amongst these and list them below.
Differentiate between elements, compounds, and mixtures, highlighting their key characteristics and providing examples for each.
How are babies produced through IVF technique? What are such babies called?
What are ‘rare species’? Give examples.
What is mass? How is it measured?
Describe the male reproductive organs with the help of a labelled diagram.
What is budding? Explain.
How do environmental factors affect microbial growth? Discuss with the help of bread mould and curd formation examples.
(1) What is a cyclone?
(2) Describe in detail the formation of a cyclone. Give a suitable diagram to explain the phenomenon.
(3) When does a cyclone lose its strength?
(2) Describe in detail the formation of a cyclone. Give a suitable diagram to explain the phenomenon.
(3) When does a cyclone lose its strength?