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सी.आई.एस.सी.ई.आईसीएसई ICSE Class 7

Multiple Choice Questions a Metal with Melting Point Less than 50°C is (A) Gallium (B) Iron (C) Gold (D) Aluminium - Chemistry

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प्रश्न

A metal with melting point less than 50°C is

विकल्प

  • Gallium

  • Iron

  • Gold

  • Aluminium

MCQ
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उत्तर

Gallium 

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अध्याय 6: Metals and Non-metals - Multiple choice questions

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

संबंधित प्रश्न

Mark ‘T’ if the statement is true and ‘F’ if it is false.

Generally, non-metals react with acids. ( )


Mark ‘T’ if the statement is true and ‘F’ if it is false.

Copper displaces zinc from zinc sulphate solution. ( )


Name one ore of manganese. Which compound of manganese is present in this ore? Also write its chemical formula.


Mention two uses of the following metals and non-metals 

Aluminium  


Give reasons 

Graphite is used in the leads of pencils  


A metal which is neither ductile nor malleable is


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 ________


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

Magnesium is used in making light weight alloys of aluminium. 


Take an element from an alkali metal and one from an alkaline earth metal and write an equation  for their action with:

Hydrochloric acid,


What was Mendeleev's basis for the classification of elements?


Give reasons for the following:
Most metals conduct electricity well.


Complete the following flow chart.


What is ductility?


Generally, metals are solid in nature. Which one of the following metals is found in a liquid state at room temperature?


Which of the following two combinations are correct?

 

  Metal Gas Evolved
(i) Copper Yes
(ii) Iron Yes
(iii) Magnesium No
(iv) Zinc Yes

Name one metal and one non-metal that exist in liquid state at room temperature. Also name two metals having melting point less than 310 K (37°C)


The liquid metal at room temperature ______.


Match the following

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

Which metals are liquid at room temperature?


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