PAK NAVY FMT Chemistry quiz 3
Results
PASSED!
FAIL!
#1. Transition elements belong to which blocks of the periodic table?
#2. Which element is liquid at room temperature?
#3. Which non-metal is a good conductor of electricity?
#4. The bond present in water molecule (H2O) between H and O is:
#5. The shape of water molecule (H2O) is:
#6. The geometry of methane (CH4) molecule is:
#7. Hybridization of carbon in methane is:
#8. Hybridization of carbon in ethene (C2H4) is:
#9. Hybridization of carbon in ethyne (C2H2) is:
#10. The strongest type of intermolecular force is:
#11. Hydrogen bonding is present in which of the following?
#12. Which isotope of hydrogen has no neutron?
#13. Radioactive isotope of hydrogen is:
#14. Alkali metals belong to which group of the periodic table?
#15. Alkaline earth metals belong to group:
#16. Halogens belong to group:
#17. Noble gases (inert gases) belong to group:
#18. The process of conversion of liquid into vapors below its boiling point is:
#19. Vapor pressure of a liquid increases with:
#20. Boiling point of a liquid is the temperature at which its vapor pressure becomes equal to:
#21. Crystalline solids have:
#22. Amorphous solids are also called:
#23. An example of an amorphous solid is:
#24. The concentration unit molality is defined as moles of solute per:
#25. Molarity is defined as moles of solute per:
#26. A solution which resists change in its pH is called a:
#27. Oxidation state of oxygen in peroxides (like H2O2) is:
#28. Oxidation state of oxygen in OF2 is:
#29. Rusting of iron is an example of:
#30. The cathode in a Leclanché dry cell is made of:
PAK NAVY FMT PREPARATION
Chemistry Quiz 3: Acids, Bases, Salts and pH
Explore the properties of acids and bases, understand the pH scale, and revise essential chemistry concepts.
Learn the Chemistry of Acids and Bases
Welcome to Pak Navy FMT Chemistry Quiz 3. This practice article is designed for students preparing for the Pakistan Navy Female Medical Technician initial test. It focuses on acids, bases, salts, indicators, and the pH scale.
Acids and bases are important topics in introductory chemistry. Learning their basic properties helps students understand common chemical substances and interpret multiple-choice questions more confidently.
What You Will Revise
- General properties of acids and bases
- Neutralisation reactions
- The pH scale
- Acid-base indicators
- Formation and examples of salts
1. Understanding Acids
In introductory chemistry, acids are commonly described as substances that produce hydrogen ions in aqueous solution. Many acids have a sour taste, but tasting chemicals is unsafe and should never be used as a testing method.
Examples: Hydrochloric acid (HCl), sulfuric acid (H₂SO₄), and acetic acid (CH₃COOH).
2. Understanding Bases
A base can accept hydrogen ions, while many common bases produce hydroxide ions in aqueous solution. Soluble bases are called alkalis. Bases react with acids in neutralisation reactions.
Examples: Sodium hydroxide (NaOH) and potassium hydroxide (KOH).
3. The pH Scale
The pH scale is used to describe how acidic or basic an aqueous solution is. At approximately 25°C, a pH below 7 is acidic, a pH of 7 is neutral, and a pH above 7 is basic.
Acidic
Neutral
Basic
4. Neutralisation and Salts
A neutralisation reaction generally occurs when an acid reacts with a base to produce salt and water.
Acid + Base → Salt + Water
Example: HCl + NaOH → NaCl + H₂O
Tips for Your FMT Chemistry Practice
When answering MCQs about acids and bases, pay attention to the wording of each question. Remember the difference between an acid, a base, an alkali, and a salt. Review the pH scale regularly and learn the formulas of common substances.
Quick Revision Challenge
- What does a pH below 7 indicate at approximately 25°C?
- Which two types of substances participate in neutralisation?
- What are the usual products of a typical acid-base neutralisation reaction?
Study tip: Try answering these questions without looking at the notes, then check your understanding.
Continue Your Chemistry Preparation
After revising acids, bases, and salts, move to the next practice topic: chemical reactions and equations. Studying one concept at a time can make your chemistry revision more organised.
Educational notice: This is independent practice material for students. It is not an official Pakistan Navy examination paper, and no question is guaranteed to appear in the actual test.