According to his theory when electrons jumps to lower shell the light is emitted and light is a form of energy so option a and d both can be correct answer but opition d is better one
Answer:
A option is correct.
(a) Energy can create a change.
Explanation:
Answer:
A. Vegetable oil
Explanation:
Solubility is determined by the principle , "like dissolves like" .
i.e. , if a compound is polar then it will dissolve in a polar compound only , and
if a compound is non - polar then it will dissolve in a non - polar compound only .
Hence , from the question ,
A. Vegetable oil is a non polar compound ,
B. Polar compound
C. ionic compound , is a polar compound .
Since , wate is polar in nature , hence it will get dissolved in a only polar compound ,
Therefore ,
Water will not get dissolved in vegetable oil , being it a non - polar compound .
Answer : Normally in any chemical reaction, if the enthalpy change i.e. ΔH is positive which means it is greater than zero then it can be called as an Endothermic Reaction.
Whereas, the system under study is absorbing heat that is produced during the reaction. So if ΔH is found to be positive then it can be called as endothermic reaction.
