A. direct combination is involved and the reaction is endothermic B. a solid is formed and heat is evolved C.…
A. ionization energy B. Electron affinity C. Dissociation energy D. Heat of atomization Correct Answer: Option B B. Electron affinity
A. contains enzymes B. is acidic C. is a mixture D. has pH value of 7 Correct Answer: Option B…
A. NH3 B. SO2 C. HCI D. CO2 Correct Answer: Option D C. HCI D. CO2
A. evaporation B. sublimation C. distillation D. filtration Correct Answer: Option D D. filtration
A. CaO + 2HNO3 → Ca(NO3)2 + H2O B. Cu + 4HNO3 → Cu(NO3)2 + 2H2O + 2NO2 C. S…
A. Copper turnings B. Copper (ll) trioxocarbonate (IV) C. Copper (ll) oxide D. Copper alloy Correct Answer: Option D D.…
A. Zinc and concentrated trioxonitrate (V) acid B. Water and calcium dicarbide C. Copper and dilute hydrochloric acid D. Magnesium…
A. Graham's law B. Gay-Lussac's Law C. Boyle's law D. Dalton's law Correct Answer: Option D D. Dalton's law
A. alpha particles and gamma rays B. alpha and beta particles C. beta particles and gamma rays D. alpha particles…