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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 7

Name the Following: a Halogen Which is a Solid at Room Temperature. - Chemistry

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प्रश्न

Name the following:

A halogen which is a solid at room temperature.

एक शब्द/वाक्यांश उत्तर
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उत्तर

Iodine

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पाठ 6: Metals and Non-metals - Objective Type Questions

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विराफ जे. दलाल New Simplified Middle School Chemistry [English] Class 7
पाठ 6 Metals and Non-metals
Objective Type Questions | Q 3.5

संबंधित प्रश्‍न

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

Generally, non-metals react with acids. ( )


What happens when Dilute sulphuric acid is poured on a copper plate?

Write word equations of the reactions involved.


State one use of Copper.


Fill in the following blank with suitable word:

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


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


Explain how, a reduction reaction of aluminium can be used for welding cracked machine parts of iron. Write a chemical equation for the reaction involved.


 For the reduction of metal oxide, suggest a reducing agent other than carbon.


Mention two uses of the following metals and non-metals  

Gold 


Fill in the blank 

_______ is a soft metal. 


State two important uses of following metal 

Uses of magnesium  


State the position of the following in the periodic table:

Alkaline earth metals


Write name.

The nonmetal having electrical conductivity.


What is it made from? Why?

Electric cables


On heating which of the following substances i.e. copper carbonate, zinc carbonate, washing soda, copper sulphate, zinc nitrate, copper nitrate, lead nitrate, ammonium chloride and ammonium dichromate – relate to the reaction given below.

A white crystalline solid which decrepitates on heating leaving a residue which fuses with the glass and evolves two gases one of which is coloured and acidic.


What is ductility?


The most abundant element in the universe is ____________.


The ability of metals to be drawn into thin wire is known as


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

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

In the following 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. 

A doctor prescribed a tablet to a patient suffering from iron deficiency. The tablet does not look like iron. Explain.


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