ISSB Initial Tests (Academic Test) FLP 3 Free Quiz

1. The mass of 1 mole of electrons is approximately:

A. 0.55 mg B. 1.008 g C. 9.1 x 10⁻²⁸ g D. 1.67 x 10⁻²⁷ kg

2. Which of the following has the greatest number of molecules?

A. 1 g H₂ B. 1 g O₂ C. 1 g CO₂ D. 1 g CH₄

3. The number of moles in 54 g of water is:

A. 1 B. 2 C. 3 D. 4

4. Normal boiling point corresponds to vapor pressure equal to:

A. 1 atm B. 2 atm C. 0.5 atm D. 10 atm

5. Pressure cookers raise boiling point by:

A. Decreasing pressure B. Decreasing temperature C. Increasing pressure D. Increasing surface area

6. A coffee cup calorimeter measures heat at:

A. Constant volume B. Adiabatic C. Constant pressure D. Constant temperature

7. Reaction with ΔH > 0, ΔS > 0 is spontaneous at:

A. Low temperature B. High temperature C. All temperatures D. No temperature

8. For the reverse reaction, Kc becomes:

A. -Kc B. 1/Kc C. Kc D. Kc + 1

9. Chemical kinetics deals with:

A. Rate of reactions and mechanisms B. Equilibrium constants C. Thermodynamics of reactions D. Structure of molecules

10. Salt bridge commonly contains:

A. NaCl B. HCl C. H₂SO₄ D. KCl or KNO₃

11. CO₂ is a(n):

A. Basic oxide B. Amphoteric oxide C. Acidic oxide D. Neutral oxide

12. The IUPAC name of CH₃CH(Cl)CH₃ is:

A. 1-chloropropane B. 2-chloropropane C. Chloropropane D. 2-chlorobutane

13. Elimination of alkyl halides gives:

A. Alkanes B. Alcohols C. Alkenes D. Alkynes

14. Grignard reagents are:

A. Strong nucleophiles B. Strong electrophiles C. Weak nucleophiles D. Not reactive

15. Dehydration of ethanol gives:

A. Ethane B. Ethene C. Ethyne D. Ethene

16. Secondary alcohols oxidize to:

A. Aldehydes B. Carboxylic acids C. Ketones D. Alkenes

17. The functional group of carboxylic acids is:

A. Contains -COOH (carbonyl + hydroxyl) B. Contains only -OH C. Contains only -CHO D. Contains -CO- with two alkyl groups

18. Effect of substituents on benzoic acid acidity:

A. No effect B. All decrease acidity C. EDG decrease acidity, EWG increase acidity D. EWG decrease acidity

19. Raw materials for Solvay process:

A. NaOH and CO₂ B. NaCl, CaCO₃, NH₃ C. Na₂SO₄ and CaCO₃ D. NaNO₃ and NH₃

20. Acetal formation is:

A. Irreversible B. Reversible C. No reaction D. Forms alkenes