📚NCERT Questions
1,675 solved questions with detailed explanations
An oxidizing agent (oxidant) is a reagent that:
Commercially, glucose is obtained from starch by boiling it with dilute H2SO4 under what conditions?
What is the definition of Gibbs energy (G)?
The products formed when sodium hydrogencarbonate reacts with hydrochloric acid are:
Which chlorine-containing antibiotic is effective for the treatment of typhoid fever?
What is the balanced chemical equation for the reaction of aluminium with oxygen?
A salt formed from a strong acid and a weak base will have a pH:
If the pH of a solution changes by one unit, what is the corresponding change in hydrogen ion concentration?
If 10 volumes of dihydrogen gas reacts with 5 volumes of dioxygen gas, how many volumes of water vapour would be produced? (Assume constant T and P)
For the oxidation of iron, 4Fe(s) + 3O₂(g) → 2Fe₂O₃(s), Δ_r H° = -1648 × 10³ J mol⁻¹ and Δ_r S° = -549.4 J K⁻¹ mol⁻¹ at 298 K. Is the reaction spontaneous?