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सी.आई.एस.सी.ई.आईसीएसई ICSE Class 7

Match the Following: - Chemistry

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प्रश्न

Match the following:

Column A Column B
(a) Helium (1) Electric bulb
(b) Neon (2) Thermometer
(c) Argon (3) Semiconductor
(d) Germanium (4) Weather balloons
(e) Mercury (5) Advertising signboards
जोड़ियाँ मिलाइएँ

उत्तर

Column A Answers
(a) Helium (4) Weather balloons
(b) Neon (5) Advertising signboards
(c) Argon (1) Electric bulb
(d) Germanium (3) Semiconductor
(e) Mercury (2) Thermometer
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अध्याय 6: Metals and Non-metals - Objective type questions

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सेलिना Concise Chemistry [English] Class 7 ICSE
अध्याय 6 Metals and Non-metals
Objective type questions | Q 2

संबंधित प्रश्न

Explain the meaning of malleable.


Why are metals used for making cooking vessels?


For the electro-refining of copper: Write the reaction that takes place at the anode


State one use of Sulphur.


What are metals? Name five metals.

 


The electronic configurations of three elements X, Y and Z are:

X : 2 Y : 2, 8, 7 Z : 2, 8, 2

Which of the following is correct regarding these elements?
(a) X is a metal
(b) Y is a metal
(c) Z is a non-metal
(d) Y is a non-metal and Z is a metal


Name a non-metal that is liquid at room temperature   


Fill in the blank 

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


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


Define metal and non-metal on the basis of electron loss or gain.


Name a liquid non-metal.


Name two metals which react with cold water.


Give the effect of heat on metal oxides based on the activity series ?


Complete the table.

 Property of metal  Use in everyday life
 i. Ductility  
 ii. Malleability  
 iii. Conduction of heat  
 iv. Conduction of electricity  
 v. Sonority  

Which metal occurs as a carbonate also gives the name of their respective ore.


Explain the following:

Metals like calcium and magnesium are never found in their free state in nature.


Give reason for the following:

Metals form cations while non-metals form anions.


Brass : Aluminium and zinc : : Bronze : ______


Boojho has learnt that non-metals on beating with a hammer are generally broken into pieces. Which of the following is non-metal?


Reason out

Mercury is the only metal that is liquid at room temperature.


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