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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 7

Statements Given Below Are Incorrect. Write the Correct Statements : Bronze is a Mixture of 10% Copper, 80% Zinc and 10% Tin. - Chemistry

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प्रश्न

Statements given below are incorrect. Write the correct statements : 

Bronze is a mixture of 10% copper, 80% zinc and 10% tin.  

एका वाक्यात उत्तर
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उत्तर

Bronze is a mixture of 80% copper, 10% zinc and 10% tin.

 
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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 6: Metals and Non-metals - Additional questions 1

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सेलिना Concise Chemistry [English] Class 7 ICSE
पाठ 6 Metals and Non-metals
Additional questions 1 | Q 2.2

संबंधित प्रश्‍न

State one use of Copper.


State one use of Mercury.


What is a thermite reaction? Explain with the help of an equation. State one use of this reaction.


Mention two uses of the following metals and non-metals 

Oxygen


Fill in the blank 

A metal that gives dazzling effect to crackers when they explode is ______


Tick (√) the most appropriate answer. 

Graphite is used :


Name a metal which is not malleable : 


Why are alkali metals kept in kerosene oil?


Write scientific reason.

Sodium is always kept in kerosene.


What is it made from? Why?

Electric cables


What is it made from? Why?

Pots and pans


Complete the following flowchart.


An element which is always lustrous, malleable and ductile 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?


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.

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)


An element forms an oxide A2O3 which is acidic in nature. Identify A as a metal or non-metal.


All gases are ______.


Which metal has the highest ductility?


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