Metals And Non-metals Class-7th Goyal Brothers ICSE Chemistry Solutions Chapter-6 (Metals And Non-metals) Unit-1. We Provide Step by Step Answers of Objectives, Fill in the blanks, Match the following, True/False, Incorrect and Correct, Question Type answers of Chapter-6 (Metals And Non-metals ) Unit-1. Visit official Website CISCE for detail information about ICSE Board Class-7.
Metals And Non-metals ICSE Class-7th Goyal Brothers Chemistry Solutions Chapter-6 Unit-1
| Board | ICSE |
| Class | 7th |
| Subject |
Chemistry |
| Book Name | Goyal Brothers |
| Chapter-6 | Metals And Non-metals |
| Unit-1 |
Metals And Non-metals |
| Topic | Solution of exercise questions |
| Session | 2023-24 |
OBJECTIVE QUESTIONS
Metals And Non-metals ICSE Class-7th Goyal Brothers Chemistry Solutions Chapter-6 Unit-1
Que: A. Fill in the blank spaces by choosing the correct words from the given list :
List : amalgam, chlorine, gallium, sodium chloride, silver chloride
1. Gallium is a liquid metal.
2. Salt of silver, such as silver chloride is used for making photographic films.
3. A solution of a metal in mercury is called amalgam.
4. A gas used for sterilization of drinking water is chlorine.
5. Saline glucose is a solution of glucose and sodium chloride.
Que: B. Statements given below are incorrect. Write the correct statements :
Question: 1. Non metals are good conductors of heat and electricity.
Answer: Graphite are good conductors of heat and electricity.
Question: 2. Bronze is a mixture of 10% copper, 80% zinc and 10% tin.
Answer: Bronze is a mixture of 80% copper, 10% zinc and 10% tin.
Question: 3. Metalloids have properties similar to metals.
Answer: Metalloids have properties similar to non-metals.
Question: 4. Aluminum is the best conductor of electricity.
Answer: Aluminum is a good conductor but not best.
Question: 5. Zinc is used for making power transmission wires.
Answer: Copper is used for making power transmission wires.
Que: C. Match the statements in Column A, with those in Column B :
| Column A | Column B |
| 1. A metal used for making high quality mirrors. | (a) Chlorine |
| 2. A metal which neither malleable nor ductile. |
(b) Graphite |
| 3. A non-metal used in the sterilization of water. | (c) Iodine |
| 4. A non-metal whose deficiency can lead to disease like goiter. | (b) Silver |
| 5. A non-metal which can be used as dry lubricant. |
(e) Zinc |
Answer:
| Column A | Column B |
| 1. A metal used for making high quality mirrors. | (a) Silver |
| 2. A metal which neither malleable nor ductile. |
(b) Zinc |
| 3. A non-metal used in the sterilization of water. | (c) Chlorine |
| 4. A non-metal whose deficiency can lead to disease like goiter. | (d) Iodine |
| 5. A non-metal which can be used as dry lubricant. |
(e) Graphite |
Que: D. Write ‘True’ or ‘False’ for the following statements :
| Statements | True/False |
| 1. Stainless steel is used for making power transmission wires. | F |
| 2. Brass is an alloy of copper and zinc and has lustrous yellow colour. |
T |
| 3. Graphite is used in making filaments of electric bulb. | F |
| 4. Magnesium is used in making light weight alloys of aluminum. | T |
| 5. Non-metals are poor conductors of electricity. |
T |
Que: E. Tick (√) the most appropriate answer :
1. Copper metal is used in :
(a) making electric wires
(b) filling tooth cavities
(c) making fuse wires
(d) preparation of hydrogen
Answer: option (a) making electric wires is correct.
2. Sodium amalgam is prepared by dissolving sodium in :
(a) molten copper
(b) dilute vinegar
(c) mercury
(d) molten silver
Answer: option (c) mercury is correct.
3. Bronze is an alloy of :
(a) copper and tin
(b) copper and zinc
(c) tin and zinc
(d) copper, zinc and tin
Answer: option (a) copper and tin is correct.
4. Graphite is used :
(a) for sterilization of water
(b) for making stainless steel
(c) as dry lubricant
(d) in making electric bulbs
Answer: option (c) as dry lubricant is correct.
5. A metal which is a poor conductor of electricity is :
(a) zinc
(b) aluminum
(c) tungsten
(d) iron
Answer: option (d) iron is correct.
— : end of Metals And Non-metals ICSE Class-7th Goyal Brothers Chemistry Solutions Chapter-6 Unit-1:–-
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