When excess ethene is shaken with acidified KMnO4 solution, the product obtained is

• A. ethane
• B. ethanal
• C. ethane - 1, 2 - diol
• D. ethanoic acid

A compound which liberates carbon (IV) oxide from a hydrogentrioxocarbonate (lV) could have the molecular formula

• A. C₅H₂OH
• B. C₃H₄
• C. HCOOH
• D. H₂O₂

Which of the following is not a naturally occuring iron ore?

• A. FeCl₂
• B. Fe₂O₃
• C. FeCO₃
• D. FeS₂

Which of the following ions will migrate to the cathode during electrolysis?

• A. Zinc ions
• B. Chloride ions
• C. Sulphide ions
• D. Tetraoxosulphate (Vl) ions

Which of the following will not affect the degree of hardness in a sample of temporarily hard water?

• A. Addition of washing soda
• B. Adding of soap
• C. Treatment with carbon exchange resin
• D. Filtration

How many grams of hydrogen gas will be liberated when 6g of magnesium ribbon dissolves in 500cm³ of 6M HCl? (Mg = 24, H = 1, Cl = 33.57)

• A) 1.5g
• B) 1.0g
• C) 0.5g
• D) 2.5g

Which of the following reactions represents the hydrolysis of an alkanoate?

• A. \(CH_3COOH + OH^- ?H^+? CH_3COO^- + H_2O\)
• B. \(CH_3COOH + C_2H_5OH ?H^+? CH_3COOC_2H_5 + H_2O\)
• C. \(CH_3COOC_2H_5 + H_2O ?H^+? CH_3COO^- + CH_3CH_2OH\)
• D. \(CH_3COOCH_2CH_3 + H_2O ?H^+? CH_3COOH + CH_3CH_2OH\)

Which of the following properties is characteristic of the halogens?

• A. Ability to accept electrons readily
• B. Ability to donate electrons readily
• C. Ability to from basic oxides
• D. Formation of coloured compounds

The maximum electron in N shell is?

• A. 2
• B. 8
• C. 18
• D. 32

The polymer used in making car rear lights is

• A) perspex
• B) bakeelite
• C) polystyrene
• D) polyacrylonitrile