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Selina solutions for Class 7 Chemistry chapter 6 - Metals and Non-metals

Selina Concise Chemistry - Middle School for Class 7 (2018-19 Session)

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Selina Selina Concise Chemistry - Middle School Class 7 (2018-19 Session)

Selina Concise Chemistry - Middle School for Class 7 (2018-19 Session) - Shaalaa.com

Chapter 6: Metals and Non-metals

Chapter 6: Metals and Non-metals solutions [Page 0]

 Name a metal that is most malleable  

 

 Name a metal that is brittle  

Name a metal as precious as gold  

 Name a metal that can be cut with knife   

Name a metal used in making electric cables 

Name a metal used as a thermometric liquid  

 Name a metal that is the best conductor of electricity 

Chapter 6: Metals and Non-metals solutions [Page 0]

Name a non-metal that a good conductor of heat and electricity 

 

Name a non-metal that is hardest naturally occurring substance  

Name a non-metal that is used to kill germs in water 

Name a non-metal that is lustrous   

Name a non-metal that is used for filling into electric bulbs 

Name a non-metal that is used for cancer therapy 

Name a non-metal that is liquid at room temperature   

Chapter 6: Metals and Non-metals solutions [Page 0]

Mention two uses of the following metals and non-metals  

Iron 

Mention two uses of the following metals and non-metals 

Aluminium  

Mention two uses of the following metals and non-metals  

Gold 

Mention two uses of the following metals and non-metals 

Oxygen

 Mention two uses of the following metals and non-metals 

 Iodine    

Chapter 6: Metals and Non-metals solutions [Page 0]

 Give reasons 

Magnesium is used in fire works. 

 Give reasons  

Aluminium is used in making aircrafts.  

 Give reasons 

Copper is used in making electric cables. 

Give reasons 

Graphite is used in the leads of pencils  

 Give reasons 

Impure diamond is used to cut glass  

Give reasons 

Gold is mixed with copper and nickel.  

Give reasons 

Tungsten is used in electric bulbs. 

Chapter 6: Metals and Non-metals solutions [Page 0]

Name the metals present in the following alloys  

Brass  

Name the metals present in the following alloys 

Bronze  

 

Name the metals present in the following alloys 

Duralumin 

Name the metals present in the following alloys  

Stainless steel   

Chapter 6: Metals and Non-metals solutions [Page 0]

Give four differences between metals and non-metals with reference to their 
(a) Melting point and boiling point,
(b) Conductivity of heat and electricity,
(c) Malleability
(d) Solubility 

Chapter 6: Metals and Non-metals solutions [Page 0]

What are metalloids? 

Chapter 6: Metals and Non-metals solutions [Page 0]

Give two uses of Silicon  

Give two uses of Antimony   

 Give two uses of  Tungsten  

Give two uses of Germanium  

Chapter 6: Metals and Non-metals solutions [Page 0]

Give two uses of Germanium  

 Fill in the blank : 

A metal stored in kerosene oil is.....................

Fill in the blank 

Tungsten metal is a poor conductor of ................ 

Fill in the blank 

..................... is a soft metal. 

 Fill in the blank 

.........................is the hardest compound known to us 

 Fill in the blank 

A non-metal used to purify water is.................... 

 Fill in the blank 

A metal that gives dazzling effect to crackers when they explode is ........................ 

Fill in the blank 

A chemical compound that makes up the striking heads of match sticks is ......................... 

Chapter 6: Metals and Non-metals solutions [Page 0]

Fill in the blank 

A chemical compound that makes up the striking heads of match sticks is ......................... 

Chapter 6: Metals and Non-metals solutions [Page 0]

Write ‘true’ or ‘false’ for the following statement : 

Silver is used to make electric cables .

Write ‘true’ or ‘false’ for the following statement . 

 Iodine acts as an antiseptic in the form of tincture of iodine . 

Write ‘true’ or ‘false’ for the following statement 

Sodium can be cut with a knife .  

 

 Write ‘true’ or ‘false’ for the following statement. 

Antimony is a metal .

Write ‘true’ or ‘false’ for the following statement . 

Sand is an oxide of silicon . 

Chapter 6: Metals and Non-metals solutions [Page 0]

MULTIPLE CHOICE QUESTIONS 

The noble gas used in advertising signboards is
(a) Helium
(b) Neon
(c) Argon
(d) Krypton 

MULTIPLE CHOICE QUESTIONS 

A metal with melting point less than 50°C is
(a) Gallium
(b) Iron
(c) Gold
(d) Aluminium  

MULTIPLE CHOICE QUESTIONS 

A metal which is neither ductile nor malleable is
(a) Copper
(b) Silver
(c) Zinc
(d) Aluminium  

MULTIPLE CHOICE QUESTIONS 

 Rust is a hydrated oxide of iron which is
(a) Reddish brown
(b) Green
(c) White
(d) Black  

MULTIPLE CHOICE QUESTIONS 

Aluminium is not used to make :
(a) Foils
(b) Wires
(c) Fireworks
(d) Utensils 

MULTIPLE CHOICE QUESTIONS 

 A metalloid used in the manufacture of microchips used in computer is :
(a) Antimony
(b) Germanium
(c) Silicon
(d) Arsenic 

MULTIPLE CHOICE QUESTIONS 

A metalloid used to make glass :
(a) Sulphur
(b) Germanium
(c) Silicon 
(d) Antimony

Chapter 6: Metals and Non-metals solutions [Page 0]

Fill in the blank spaces by choosing the correct words from the given list. 

List: amalgam, chlorine, gallium, sodium chloride, silver chloride 

.................... is a liquid metal. 

 

Fill in the blank spaces by choosing the correct words from the given list.
List: amalgam, chlorine, gallium, sodium chloride, silver chloride  

Salt of silver, such as........................... is used for making photographic films.

Fill in the blank spaces by choosing the correct words from the given list.
List: amalgam, chlorine, gallium, sodium chloride, silver chloride 

A solution of a metal in mercury is called...........................

Fill in the blank spaces by choosing the correct words from the given list.
List: amalgam, chlorine, gallium, sodium chloride, silver chloride    

 Fill in the blank spaces by choosing the correct words from the given list.
List: amalgam, chlorine, gallium, sodium chloride, silver chloride 

Saline glucose is a solution of glucose and.....................  

Chapter 6: Metals and Non-metals solutions [Page 0]

Statements given below are incorrect. Write the correct statements : 

Chlorine gas is used in the manufacture of sulphuric acid.  

Statements given below are incorrect. Write the correct statements : 

Bronze is a mixture of 10% copper, 80% zinc and 10% tin.  

Statements given below are incorrect. Write the correct statements : 

Soda water is prepared by dissolving washing soda in water.  

 Statements given below are incorrect. Write the correct statements : 

Aluminium is best conductor of electricity.   

Statements given below are incorrect. Write the correct statements : 

Zinc is used for making power transmission wires.  

Chapter 6: Metals and Non-metals solutions [Page 0]

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 sterilsation of water.  c Iodine 
4 A non-metal, whose deficiency can lead to disease like goitre.  d Silver 
5  A non -metal which can be used as dry lubricant.  Zinc

 

Chapter 6: Metals and Non-metals solutions [Page 0]

Write ‘True’ or ‘False’ in front of following statements. 

Stainless steel is used for making power transmission wires. 

Write ‘True’ or ‘False’ in front of following statements.  

Brass is an alloy of copper and zinc and has lustrous yellow colour. 

Write ‘True’ or ‘False’ in front of following statements.

Graphite is used in making filaments of electric bulb.  

Write ‘True’ or ‘False’ in front of following statements. 

Magnesium is used in making light weight alloys of aluminium. 

Write ‘True’ or ‘False’ in front of following statements. 

Non-metals are poor conductors of electricity.     

Chapter 6: Metals and Non-metals solutions [Page 0]

Tick (√) the most appropriate answer.
 Copper metal is used in :
(a) making electric wires
(b) filling tooth cavities
(c) making fuse wires
(d) preparation of hydrogen  

Tick (√) the most appropriate answer. 

Sodium amalgam is prepared by dissolving sodium in :
(a) molten copper
(b) dilute vinegar
(c) mercury 
(d) molten silver

Tick (√) the most appropriate answer. 

Bronze is an alloy of :
(a) copper and tin
(b) copper and zinc
(c) tin and zinc
(d) copper, zinc and tin  

Tick (√) the most appropriate answer. 

Bronze is an alloy of :
(a) copper and tin
(b) copper and zinc
(c) tin and zinc
(d) copper, zinc and tin  

Tick (√) the most appropriate answer. 

Graphite is used :
(a) for sterilisation of water
(b) for making stainless steel
(c) as dry lubricant
(d) in making electric bulbs   

Tick (√) the most appropriate answer. 

A metal which is a poor conductor of electricity is :
(a) zinc
(b) aluminium
(c) tungsten
(d) iron 

Chapter 6: Metals and Non-metals solutions [Page 0]

 What do you understand by the term metal?  

 

State any five physical properties of a metal.
Physical properties of a metal : 

Name one metal which is a liquid at room temperature  

Name a metal which can be cut with a knife : 

Name a metal which is lighter than water : 

Name a metal which is not malleable : 

Name a metal which is best conductor of electricity :  

Name a metal which is poor conductor of electricity :   

State two important uses of following metal : 

Uses of gold  

State two important uses of following metal: 

Uses of silver  

State two important uses of following metal 

Uses of copper  

State two important uses of following metals : 

Uses of iron   

State two important uses of following metal 

Uses of tin  

State two important uses of following metal 

 Uses of zinc  

 State two important uses of following metal 

 Uses of aluminium  

 State two important uses of following metal 

Uses of lead     

State two important uses of following metal 

Uses of magnesium  

State two important uses of following metal

Uses of mercury  

What do you understand by the term non-metal?  

What do you understand by the term non-metal?   

Name the non-metal and its natural form, which is the hardest substance.    

Name a non-metal which is liquid form at room temperature.

Name a non-metal which is good conductor of electricity.  

Name a gaseous non-metal,. having greenish yellow colour.  

Name a non-metal whose compounds help in the growth of plants.  

 State two important uses of following non-metals  

 Uses of nitrogen  

State two important uses of following non-metal 

Uses of oxygen  

 State two important uses of following non-metal 

Uses of chlorine  

State two important uses of following non-metal  

State two important uses of following non-metal 

 Uses of graphite  

 What are noble gases? Name all in the order of their increasing density.   

State one use  of helium  

State one use of argon    

What is an alloy? 

 

Why are alloys made?  

State the composition and two uses of given alloy : Stainless steel

 

 State the composition and two uses of given alloy : Duralumin

 

State the composition and two uses of given alloy :  Brass   

State the composition and two uses of given alloy : Bronze 

 What is an amalgam? How does an amalgam different from an alloy?  

Chapter 6: Metals and Non-metals

Selina Selina Concise Chemistry - Middle School Class 7 (2018-19 Session)

Selina Concise Chemistry - Middle School for Class 7 (2018-19 Session) - Shaalaa.com

Selina solutions for Class 7 Chemistry chapter 6 - Metals and Non-metals

Selina solutions for Class 7 Chemistry chapter 6 (Metals and Non-metals) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the CISCE Selina Concise Chemistry - Middle School for Class 7 (2018-19 Session) solutions in a manner that help students grasp basic concepts better and faster.

Further, we at Shaalaa.com are providing such solutions so that students can prepare for written exams. Selina textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Class 7 Chemistry chapter 6 Metals and Non-metals are Concept of Metals, Non-metals, Properties of Metals, Non-metals, Metals and Non-metals with the General Properties (Lustre,Conduction of Electricity, Heat, Malleability, Ductility, Sonority, Melting Point, Boiling Point, Density, Strength.), Classification of Elements as Metals and Non-metals., Corrosion of Iron (Rusting), Ways to Prevent Rusting (Oiling, Painting, Chrome Plating, Galvanization, Tinning), Corrosion of Iron - Avoiding Contact with Air and Water Vapour, Uses of Certain Metals (Iron, Gold, Copper, Aluminium, Zinc, Lead, Magnesium)., Concept of Metalloids - metals and non-metals – e.g. silicon, germanium,tungsten, antimony), Uses of Metalloids.

Using Selina Class 7 solutions Metals and Non-metals exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in Selina Solutions are important questions that can be asked in the final exam. Maximum students of CISCE Class 7 prefer Selina Textbook Solutions to score more in exam.

Get the free view of chapter 6 Metals and Non-metals Class 7 extra questions for Chemistry and can use Shaalaa.com to keep it handy for your exam preparation

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