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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 7

Name a Metal Which is Not Malleable : - Chemistry

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

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

संबंधित प्रश्‍न

State one use of Silver.


How does the electrical conductivity of copper alloys, brass and bronze, differ from that of pure copper?


Mention two uses of the following metals and non-metals 

Oxygen


Give reasons  

Aluminium is used in making aircrafts.  


State two important uses of following metal: 

Uses of gold  


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

Oxygen


When a copper coin is dipped in silver nitrate solution, a glitter appears on the coin after some time. Why does this happen? Write the chemical equation.


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


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

Magnesium


Name the following:

A metal used in packaging.


Match the columns.

Group A Group B
1) Copper and Zinc a) Brass
2) Copper and Tin b) Bronze
  c) Stainless steel

Halogen reacts with acid.


Complete the following flowchart.


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.

Assertion: Mercury is solid in room temperature.

Reason: Mercury is a non-metal.


The most abundant metal in the earth’s crust is ____________.


Which of the following metals are obtained by electrolysis of their chlorides in molten state?

  1. Na
  2. Ca
  3. Fe
  4. Cu

Which metals are not solid at room temperature?


The metals which are found in both free state as well as combined state are ______.


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