Question

4. How can you show that all is present 5. Look at the adjoining diagram and answer the questions. (a) Which gas helps the candle in burning out of nitrogen, oxygen or carbon dioxide? (b) Give any one use of this gas, other than burning. (c) Will the candle continue burning for long? Why/Why not? (d) Will the water level rise up in the jar? Give reason. (e) What is the name of the main gas left in the jar?



please help me tomorrow is my exam. ​

Answer 1

(a) Oxygen helps in burning

(b) it helps the living organisms to survive

(c) it is based on the oxygen availability there