The acid used in electrolysis of water is dilute

• A) HNO3
• B) CH3COOH
• C) H2SO4
• D) HCl

If an atom is represented as²³₁₁X, which of the following deduction is correct?

• A) it contains 12 protonic
• B) it forms a covalent chloride
• C) its atomic number is 23
• D) it is an alkali metal

What volume of 1.5M solution of KOH would contain 0.045 moles

• A) 67.50 cm³
• B) 30.00 cm³
• C) 6.75 cm³
• D) 3.00 cm³

If 10.5g of lead (II) trioxonitrate (V) is dissolved in 20cm³ of distilled water at 18oC, the solubility of the solute in mol dm^-3 is [Pb = 207, N = 14, O = 16]

• A) 1.60
• B) 5.25
• C) 16.00
• D) 525.00

Lucas reagent is used to test for

• A) alkanes
• B) alkanoic acids
• C) alkanols
• D) amines

The salt formed from a reaction between citric acid and sodium hydroxide in solution will be

• A) acidic
• B) basic
• C) complex
• D) neutral

The molecular formula of a common organic laboratory anaesthetic is

• A) CHCl3
• B) CHI3
• C) CCl4
• D) CHF3

The oxidation state of Cr in K2Cr2O7 is

• A) +7
• B) +6
• C) +5
• D) 4

Which of the following metals is purified commercially by electrolysis?

• A) Zn
• B) Fe
• C) Sn
• D) Cu

Cathode rays causes an object placed behind a perforated anode to cast a shadow on the screen. This observation shows that the rays

• A) are positively charged
• B) are negatively charged
• C) have mass
• D) travel in straight lines