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

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. - Chemistry

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प्रश्न

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. 

 

रिक्त स्थान भरें

उत्तर

Gallium is a liquid metal.

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अध्याय 6: Metals and Non-metals - Additional questions 1

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सेलिना Concise Chemistry [English] Class 7 ICSE
अध्याय 6 Metals and Non-metals
Additional questions 1 | Q 1.1

संबंधित प्रश्न

What happens when Iron nails are placed in copper sulphate solution?

Write word equations of the reactions involved.


Write the name and formulae of  a metal hydride.


What is an amalgam?


Mention two uses of the following metals and non-metals 

Oxygen


Give reasons 

Graphite is used in the leads of pencils  


State the position of the following in the periodic table:

Alkali metals


Write name.

The device used for grinding an ore.


 Match the alloys given in column I to the uses given in column II : 

Column I Column II
(i) Duralumin  A. Electrical fuse
(ii) Solder B. Surgical instruments 
(iii) Brass  C. Aircraft body 
(iv) Stainless Steel   D. Decorative articles

 


What is it made from? Why?

Electric cables


With reference to the following metals state their use in daily life metal:

Aluminium


With reference to the following metals state their use in daily life metal:

Magnesium


State why telegraph poles are painted with aluminium paint.


Soft metal : Na : : hard metal : _______


The metal which is liquid at room temperature is ______.


Higher Order Thinking Skills.

Aakash noticed that the metal latch on gate was difficult to open during hot sunny days. However, it was not difficult to open the same latch at night. Aakash observed that the latch and the gate are exposed to the sun during day time.

  1. Formulate a hypothesis based on the information provided.
  2. Briefly state how you would test the hypothesis.

Why are bells made of metals?


The most abundant element in the universe is ____________.


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


Metals are usually solids or gases at room temperature.


In the given figure, you find that the bulb glows when an iron nail is placed between two ends of wire. Complete the following sentences on the basis of this fact.

  1. ______  is a metal.
  2. Metals are good ______ of electricity. 

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