Answer:
I believe it is 3 and 4. I really hope it is but i am positive :)
Answer: Option (c) is the correct answer.
Explanation:
Wood is a mixture of different substances. Primarily it consists of cellulose, lignin, water etc.
When we heat wood then all these substance oxidize into the atmosphere even before they could melt.
Whereas iron, sodium chloride and ethanol all are the substances which can melt at any temperature.
Thus, we can conclude that out of the given options, wood, a mixture of different substances is a material that does not melt at any temperature.
Answer:
Here boron-11 means the name of the element is boron and the mass number is 11
Explanation:
Answer:
Save Fuel, Save Earth
Fuel and time wait for none!
Be wise, don’t waste fuel
Save fuel, stop being cruel
Don’t contribute towards global warming
Care for future, save fuel
