Acids and bases, pH scale (simple numerical questions), exothermic and endothermic reactions

What is the pH of a 0.001 M HCl solution?

Which of the following best describes hard acids?

In exothermic reactions, what is the sign of ΔH?

Which of the following is an acid?

Endothermic reaction is one in which

Which statement is not correct?

Among the following, which one is not a Lewis acid ?

Calculate the pH of 0.001 M barium hydroxide, assuming that it is completely ionized. Among the following, choose the correct answer.

How are H₂O and CO₂ classified in terms of acid-base behavior?

The pH value of 0.01M NaOH solution will be

The nature of the reaction of formation of quick lime from limestone is

Which of the following is not a soft base ?

Calculate the pH of an aqueous ammonia solution that has OH⁻ concentration of 1.9 × 10⁻³ M.

Which of the following is/are examples of oxoacids ?

Which among the following is strongest acid ?