NaHCO₃(s) can be distinguished from Na₂CO₃(s) by the action of

• A. dilute hydrochloric acid
• B. carbon (IV) oxide
• C. aqueous ammonia
• D. heat

The common feature of reactions at the anode is that

• A. electrons are consumed
• B. oxidation is involved
• C. ions are reduced
• D. the electrode dissolves

Which of the following oxides will NOT dissolve in both dilute hydrochloric acid and 2M Sodium hydroxide solution?

• A) Lead (II) oxide
• B) Aluminium oxide
• C) Zinc (II) oxide
• D) Calcium oxide

Which of the following statements is correct about the average kinetic energy of the molecules of a gas?

• A. It increase with increase in pressure
• B. It increase at constant temperature
• C. It increase with increase in temperature
• D. It increase with increase in volume

What is the IUPAC name for the compound CCl₄?

• A. Tetrahydrochloride
• B. Tetrachloromethane
• C. Carbon tetrachloride
• D. Chloroform

The energy change that accompanies the addition of an electron to an isolated gaseous atom is

• A. bond energy
• B. electronegativity
• C. electron affinity
• D. ionization energy

Which of the following gases can be collected by method of downward delivery?

• A) chlorine
• B) oxygen
• C) ammonia
• D) hydrogen

The components of universal indicator solution can best be prepared by

• A) chromatography
• B) filtration
• C) evaporation
• D) fractional distillation

30cm3 of oxygen at 10 atmospheres pressure is placed in a 20 cm3 container. Calculate the new pressure if temperature is kept constant?

• A. 6.7 atm
• B. 15.0 atm
• C. 60.0 atm
• D. 66. 0 atm

Which of the following is used widely in the manufacture of flavours and perfumes?

• A. Alkanoates
• B. Alkanones
• C. Alkanes
• D. Complex sugars