हिंदी
सी.आई.एस.सी.ई.आईसीएसई ICSE Class 7

Write ‘True’ Or ‘False’ for the Following Statement : Silver is Used to Make Electric Cables . - Chemistry

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प्रश्न

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

Silver is used to make electric cables.

विकल्प

  • True

  • False

MCQ
सत्य या असत्य
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उत्तर

False

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  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
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 3.1

संबंधित प्रश्न

Saloni took a piece of burning charcoal and collected the gas evolved in a test tube.

(a) How will she find the nature of the gas?

(b) Write down word equations of all the reactions taking place in this process.


Which property of graphite is utilised in making electrodes?


State one use of  Iron.


The atomic number of an element X is 12.
(a) What must an atom of X do to attain the nearest inert gas electron configuration?
(b) Which inert gas is nearest to X?


Fill in the following blank with suitable word:

The electrical conductivity and melting point of an alloy is ........... than that of pure metals.


Give two uses of Germanium  


A metal with melting point less than 50°C is


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. 

 


State two important uses of following metal 

Uses of magnesium  


Write name.

The device used for grinding an ore.


Write scientific reason.

Generally the ionic compounds have high melting points.


On heating which of the following substances i.e. copper carbonate, zinc carbonate, washing soda, copper sulphate, zinc nitrate, copper nitrate, lead nitrate, ammonium chloride and ammonium dichromate – relate to the reaction given below.

An amorphous substance which turns from pale green to black on strong heating evolving a colourless, acidic gas as the only gaseous product.


Aluminium: _______: gold : : electric insulator


Halogen reacts with acid.


Complete the following flowchart.


Compare the properties of metals and nonmetals. Give three examples for each.


Which of the following property is generally not shown by metals?


Which one of the following four metals would be displaced from the solution of its salts by other three metals?


Match the following

i. Softest metal a. Copper
ii. Hardest metal b. Sodium
iii. Hardest non–metal c. Osmium
iv. Ductility d. Diamond

Match the following

i. Silica a. Caustic potash
ii. Potassium hydroxide b. Sand
iii. Sodium hydroxide c. Calamine
iv. Zinc carbonate d. Caustic soda

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