Which of the following pairs cannot be represented with a chemical formula?

• A) air and bronze
• B) bronze and sodium chloride
• C) copper and sodium chloride
• D) caustic soda and washing soda

Calculate the quantity of electricity passed when 0.4 A flows for 1 hour 20 minutes through an electrolytic cell

• A. 480°C
• B. 384°C
• C. 1920°
• D. 32°C

Which of the following class of compounds can exist as dipolar ions in solution?

• A) Alkanoic acid
• B) Fatty acids
• C) Dialkanoic acids
• D) Amino acids

Which of the following metals is purified commercially by electrolysis?

• A) Zn
• B) Fe
• C) Sn
• D) Cu

Alkaonic acids have low volatility compared with alkanols because they?

• A. are more polar than alkaonls
• B. have two oxygen atoms while alkanols have one
• C. form hydrogen bonds while alkanols do not
• D. form two hydrogen bonds while alkanols form one

2- methylbutan- 2ol is an example of a Options

• A) dihydric alkanol
• B) tertiary alkanol
• C) secondary alkanol
• D) primary alkanol

N2O4(g) ↔ 2NO2(g) ΔH = +ve In the reaction above, an increase in temperature will

• A) increase the value of the equilibrium constant
• B) decreases the value of the equilibrium constant
• C) increase in the reactant production
• D) shift the equilibrium to the left

What is the likely formula of a compound formed between element M in group 2 and between element X in group 7?

• A)
  M\(_7\)X\(_2\)
• B)
  MX\(_2\)
• C)
  M\(_2\)X\(_7\)
• D)
  M\(_2\)X

Given that the molecular mass of iron is 56 and that of oxygen is 16, how many moles of iron (III) oxide will be contained in 1kg of the compound?

• A) 12.5 moles
• B) 0.625 moles
• C) 25 moles
• D) 6.25 moles

To what temperature must a gas 273 K be heated in order to double both its volume and pressure?

• A. 298 K
• B. 546 K
• C. 819 K
• D. 1092 K