What is the likely formula of compound formed between element M in group two and element X in group seven?

• A. M7X2
• B. M2X
• C. M2X7
• D. MX2

The pH of a solution containing \(0.5 \times 10^{-6}\) MH\(_2\)SO\(_4\) is

• A) 6.3
• B) 6.5
• C) 6.0
• D) 5.0

The major source of oxides of nitrogen is from the burning of

• A) coal
• B) wood
• C) fuel
• D) chlrofluorocarbons

If 24.4 g of lead (ll) trioxonitrate (V) were dissolved in 42 g of distilled water at 20oC; calculate the solubility of the solute in gdm-3.

• A) 581.000.
• B) 0.581
• C) 5.810
• D) 58.100

Geometric (cis-trans) isomerism is exhibited by

• A. C2H2CI2
• B. CH2CI5
• C. C4H10
• D. C5H12

The vapour pressure of a liquid depends on l. temperature. ll. rate of condensation. III. cohesive forces holding the particles together

• A. l only
• B. l and ll only
• C. l and lll only
• D. ll and lll only

The element with electron configuration 1s2 2s2 2p6 3s2 3p1 belongs to

• A. s-block period 3, group 1
• B. p-block, period 3, group 2
• C. s-block, period 3, group 3
• D. p-block, period 3, group 3

The type of iron that is best suited for welding, making nails, chains and iron rods is

• A) pig iron
• B) wrought iron
• C) cast iron
• D) iron pyrites

How many moles of copper would be deposited by passing 3F of electricity through a solution of copper (II) tetraoxosulpohate (IV)? (F = 96 500 C mol-)

• A. 0.5
• B. 1.0
• C. 1.5
• D. 3.0

What is the quantity of electricity produced when a current of 0.5A is passed for 5 hours 45 mins? (1F = 96500C)

• A. 0. 11F
• B. 0.12F
• C. 0.22F
• D. 1.1F