A salt which loses mass when exposed to air is
- A. hygroscopic
- B. deliquescent
- C. efflorescent
- D. fluorescent
- E. effervescent
The empirical formula of hydrocarbon containing 0. 12 mole of carbon and 0.36 mole of hydrogen is
- A. CH2
- B. CH3
- C. C2H2
- D. C2H4
- E. C2H6
Given that 32.0g sulphur contains 6.02 x 10 23 sulphur atoms how many atoms are there in 2.70g of aluminium? {Al = 27, S =32}
- A. 6.02 x 10 23
- B. 3.01 x 1022
- C. 6.02 x 1022
- D. 5. 08 x 1022
- E. 3.01 x 1022
Which of the following does not affect the rate of a chemical reaction?
- A. Addition or presence of a catalyst
- B. Size of the reacting particles
- C. The enthalpy change for the reaction
- D. Concentration of the reactants
- E. Temperatureat which the reaction is carried out
Which of the following does not affect the rate of a chemical reaction?
- A. Addition or presence of a catalyst
- B. Size of the reacting particles
- C. The enthalpy change for the reaction
- D. Concentration of the reactants
- E. Temperatureat which the reaction is carried out
Which of the following compound is aromatic?
- A. Benzene
- B. Cyclobutane
- C. Cyclopentane
- D. Hexane
- E. Ethene
The reaction represented by the equation NaOH(aq) + HCI(aq) → NaCI(aq) + H2O(/)
- A. is a double decomposition
- B. is a neutralization
- C. is reversible
- D. is usually catalysed
- E. attains equilibrium after a few seconds
The following are uses of sulphur except
- A. manufacture of tetraoxosulphate (VI) acid
- B. prevention of the growth of fungi
- C. vulcanization rubber
- D. manufacture of dyes
- E. coating of steel to prevent rusting
An acid present in proteins is
- A. lactic acid
- B. amino acid
- C. propanoic acid
- D. palmitic acid
- E. stearic acid
Equilibrium is said to be attained in reversible reaction when
- A. all the reactants have been used up
- B. all the products have been formed
- C. there is no further change in temperature
- D. the rates of the forward and backward reactions are equal
- E. the rate of formation of the products decreases with time
Z in diagram above represents
- A. heat of reaction
- B. activation energy
- C. free energy
- D. entropy of reaction
In the diagram, the function of the concentrated H2SO4 is to?
- A. purify the gas
- B. dry the gas
- C. liquefty the gas
- D. remove odour
The IUPAC nomenclature of the compound above is
- A. 2-bromo-3-chlorobutanol
- B. 3-bromo-2-chlorobutanol
- C. 3-chloro-2-bromobutanol
- D. 2-chloro-3-bromobutanol
The compound above is an
- A. alkanone
- B. alkanoate
- C. alkanal
- D. akanol
Use the following option above to answer this question. Which of the following compounds in solution will turn red litmus paper blue?
- A. A
- B. B
- C. C
- D. D
Use the above option to answer this question. The dehydration of ammonium salt of alkanoic acids produces a compound with the general formula
- A. A
- B. B
- C. C
- D. D
The IUPAC nomenclature for the compound above is
- A. 4-methylpent-1-ene
- B. 3-methylpent-2-ene
- C. 2-methylpent-1ene
- D. 2-methylpent-4-ene
Choose the correct option from the graph above . 3Fe(S) + 4H2O(g) ⇌ Fe3O4(s) + 4H2(g). The equilibrium constant, K, of the reaction above is represented as
- A. A
- B. B
- C. C
- D. D
In the graph above, the activation energy of the catalyzed reaction is
- A. 100KJ
- B. 300KJ
- C. 250KJ
- D. 200KJ
From the diagram above, an ideal gas is represented by
- A. Z
- B. W
- C. X
- D. Y
choose the correct answer in the option above. Which of the following is a primary amine?
- A. A
- B. B
- C. C
- D. D