Chemistry

Question 1

1Hydrochloric acid is a strong acid.

Easy

A. True B. False

Question 2

2What is the basicity of phosphoric acid, H₃PO₄?

Medium

A. 4 B. 3 C. 5 D. 2

Question 3

3Every Brønsted–Lowry acid has a conjugate base.

Medium

A. True B. False

Question 4

4An alkali is

Easy

A. any acid B. a salt C. an insoluble base D. a base that is soluble in water

Question 5

5How many moles of NaOH are needed to neutralise 0.2 mol of carbonic acid completely?

Hard

A. 0.2 mol B. 0.1 mol C. 0.4 mol D. 0.6 mol

Question 6

6According to Brønsted–Lowry theory, an acid is a

Easy

A. hydroxide donor B. electron pair acceptor C. proton acceptor D. proton donor

Question 7

7How many moles of NaOH are needed to neutralise 0.5 mol of sulphuric acid completely?

Hard

A. 0.25 mol B. 1.5 mol C. 1 mol D. 0.5 mol

Question 8

8In Lewis theory, a base is an electron ___ donor.

Hard

Your answer (fill in the blank)

Question 9

9The conjugate base of HCl is

Medium

A. Cl⁻ B. OH⁻ C. H₃O⁺ D. H⁺

Question 10

10How many moles of NaOH are needed to neutralise 0.2 mol of sulphuric acid completely?

Hard

A. 0.4 mol B. 0.6 mol C. 0.2 mol D. 0.1 mol