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सी.आई.एस.सी.ई.आईसीएसई ICSE Class 7

Name a Metal Which is Not Malleable :

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प्रश्न

Name a metal which is not malleable : 

एक शब्द/वाक्यांश उत्तर
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उत्तर

Zinc

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अध्याय 6: Metals and Non-metals - Additional questions 2

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सेलिना Concise Chemistry [English] Class 7 ICSE
अध्याय 6 Metals and Non-metals
Additional questions 2 | Q 2.4

संबंधित प्रश्न

Give reasons for the following.

Sodium and potassium are stored in kerosene.


Write the name and formula of a metal hydride.


State one use of the following metal:

Copper


State one use of the following metal:

Aluminium


Which property of ‘solder’ alloy makes it suitable for welding electrical wires?


The alloy in which one of the metals is mercury is called an ______.


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


Statements given below are incorrect. Write the correct statements : 

Aluminium is best conductor of electricity.   


State two important uses of following metal

Uses of mercury  


Give the general characteristics of:

Alkaline earth metals with reference to

(i) bonding
(ii) action of air
(iii) action of water
(iv) action of acid


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 is it made from? Why?

Electric cables


What is it made from? Why?

Ornaments


Aluminium: _______: gold : : electric insulator


Write the name.

Two highly reactive metals-


Complete the following flow chart.


Give reasons for the following.

  1. Aluminum foils are used to wrap food items.
  2. Immersion rods for heating liquids are made up of metallic substances.
  3. Sodium and potassium are stored in kerosene.
  4. Mercury is used in thermometers.

The most abundant element in the universe is ____________.


Metals and non–metals are used for making ______, ______ and ______.


Compare the conductivity of metals and non–metals.


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