Which of the following is not a property of trioxonitrate (V) salts?

• A. Positive reaction to the brown ring test
• B. Ability to dissolve in cold water
• C. Decomposition on being strongly heated
• D. Production of effervescence with saturated Na₂CO₃solution

The solubility in mol dm/-3 of 20g of CuSO4 dissolved in 100g of water at 180o is [Cu = 64, S = 32, O =16]

• A. 0.13
• B. 0.25
• C. 1.25
• D. 2.00

How many grammes of NaOH(s) would be needed to produce 100.0 cm3 of a 0.20 mol dm-3 NaOH, (aq)? [NaOH = 40.0]

• A. 800.0g
• B. 0.02 g
• C. 20.0 g
• D. 0.80 g

Examples of polymers include the following except

• A. starch
• B. nylon
• C. wool
• D. glass

The term atomic orbital refers to ...

• A) a circular path
• B) elliptical path
• C) an energy level
• D) a volume of space

What volume of hydrogen will be produced if 100cm³ of ammonia is completely decomposed at constant temperature and pressure? The equation for reaction is 2NH₃(g) → N₂(g) + 3H₂(g)

• A. 50cm³
• B. 150cm³
• C. 200cm³
• D. 300³

Which of the following processes is a physical reaction?

• A. Electrolysis
• B. Hydrolysis
• C. Allotropic change
• D. Neutralization

The isomer of a compound C₅H₁₀ which does NOT decolourise bromine water is

• A) 2-methylbut-2- ene
• B) 3-dimenthyl methylbut-2-ene
• C) 2-methylbutl-ene
• D) methylcyclobutane

Na2C2O4 + CaCl2 → CaC2O4 + 2NaCl. Given a solution of 1.9g of sodium oxalate in 50g of water at room temperature, calculate the minimum volume of 0.1 M calcium oxalate using the above equation?

• A. 1.40 χ 102 dm3
• B. 14.0 χ 102 cm3
• C. 1.40 χ 10-2 dm-2
• D. 14.0 χ 10-2 cm3

The quality of electricity required to discharge 1 mole of univalent ion is

• A. 9600C
• B. 48250C
• C. 96500C
• D. 193000C