Metals and Non-Metals MCQs Class-7 Dalal Simplified ICSE Chemistry Solutions Chapter-6 Dr Viraf J Dalal Middle School Allied Publishers Solutions. Chapter-6. We Provide Step by Step Solutions of Exercise/Lesson -6 Complete the statement, Given reasons, Name the following, Match the following, True or False of Dr Viraf J Dalal Middle School Chemistry Allied Publishers. Visit official Website CISCE for detail information about ICSE Board Class-7.
Metals and Non-Metals MCQs Class-7 Dalal Simplified ICSE Chemistry Solutions Chapter-6
| Board | ICSE |
| Class | 7th |
| Subject | Chemistry |
| Book Name | Dalal New Simplified |
| Chapter-6 | Metals and Non-Metals |
| Unit-1 | Metals and Non-Metals |
| Topic | Solution of exercise MCQs |
| Session | 2023-24 |
Objective Type Questions
Metals and Non-Metals MCQs Class-7 Dalal Simplified ICSE Chemistry Solutions Chapter-6
Question-1. Complete the statements given below, by filling in the blank with the correct word/s:
- The ability of a metal to produce a reasonant sound _sonority_.
- A metal which floats on water _potassium_.
- A non-metal that leaves a mark on paper _graphite_.
- A non-metal which allows an electric current to pass through it _graphite_.
- A non-metal added to swimming pools to kill germs _chlorine_.
Question-2. Give reasons for the following:
Question: 1. Metals form cations while non-metals form anions.
Answer: Metals lose or donate their valence electrons and form cations while non-metals gain or accept valence electrons to form anions.
Question: 2. Potassium reacts vigorously with cold water while copper does not react with water or steam.
Answer: Potassium is the most reactive metal while copper is the least reactive metal.
Question: 3. Rusting reduces the structural strength of iron.
Answer: Rusting corrodes iron thereby reducing the structural strength of iron.
Question: 4. A suspension of rust is basic in nature.
Answer: Rust is formed when iron reacts with atmospheric air and oxygen in it with the presence of moisture which makes it a metallic oxide, and metallic oxides are basic in nature.
Question: 5. Galvanized steel is not used for articles used for edible applications.
Answer: Galvanized steel has zinc coating on it which dissolves in food acids and forms poisonous compounds, hence it is not used for edible applications.
Question-3. Name the following:
Question: 1. The most reactive halogen.
Answer: The most reactive halogen is –Fluorine.
Question: 2. A meatal used in packaging.
Answer: A metal used in packaging.–Aluminium.
Question: 3. The chemical compound responsible for the green deposit on the surfaced of articles of copper.
Answer: The chemical compound responsible for the green deposit on the surface of articles of copper– Copper carbonate
Question: 4. A metal used in flexible pipes.
Answer: A metal used in flexible pipes.– Lead
Question: 5. A halogen which is solid at room temperature.
Answer: A halogen which is a solid at room temperature.– Iodine
Question-4. Match the correct answer from A, B, C, D and E – for each statement given below: A : Boron, B : Chlorine, C : Potassium, D : Platinum, E : Radon
Question: 1. The element placed in the extreme left of the Modern Periodic Table.
Answer: C: Potassium
Question: 2. The element which shows properties of both metals and non – metals.
Answer: A: Boron
Question: 3. The element from the halogen family which is most abundant.
Answer: B: Chlorine
Question: 4. The element which is nob;e gas and radioactive in nature.
Answer: E: Radon
Question: 5. The element which is a noble metal.
Answer: D: Platinum
Question-5. State whether the statements given below are true or false. If false write the correct statement.
| Statements | Ture/False |
| 1. Lead pencils contain lead. | F |
| 2. The chemical name of rust is iron [[III]] oxide. | T |
| 3. Silicon is an example of a metalloid. | T |
| 4. Either oxygen or moisture is essential for rusting. | T |
| 5. Graphite is a lustrous non-metal which conducts electricity. | T |
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