MCQ
An endothermic reaction is one in which
- AHeat is converted into electricity
- BHeat is absorbed
- CHeat is evolved
- DHeat is converted into mechanical work
While, any reaction involving overall heat releasing of heat is known as exothermic reaction.
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$(A)$ Non metals have higher electronegativity than metals.
$(B)$ Non metals have lower ionisation enthalpy than metals.
$(C)$ Compounds formed between highly reactive nonmetals and highly reactive metals are generally ionic.
$(D)$ The non-metal oxides are generally basic in nature.
$(E)$ The metal oxides are generally acidic or neutral in nature.
$R - C \equiv C - R\xrightarrow{{Pd/BaS{O_4}}}A$
$R - C \equiv C - R\xrightarrow{{Na/Liq.\,NH_3}}B$