मराठी
सी.आई.एस.सी.ई.आयसीएसई ICSE Class 7

With Reference to the Following Metals State Their Use in Daily Life Metal: Iron

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प्रश्न

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

iron

एका वाक्यात उत्तर
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उत्तर

Iron:

  1. Pig Iron is used in drain pipes as it is easily moulded into castings.
  2. Steel is used in Automobiles.
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पाठ 6: Metals and Non-metals - Exercise

संबंधित प्रश्‍न

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

Write word equations of the reactions involved.


Saloni took a piece of burning charcoal and collected the gas evolved in a test tube.

(a) How will she find the nature of the gas?

(b) Write down word equations of all the reactions taking place in this process.


Which property of graphite is utilised in making electrodes?


State five uses of metals.


State one use of the following metal:

Silver


State one use of the following metal:

Gold


The atomic number of an element Y is 16.

  1. What must an atom of Y do to achieve the nearest inert gas electron arrangement?
  2. Which inert gas is nearest to Y?

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


Give reasons 

Graphite is used in the leads of pencils  


Name a metal which is best conductor of electricity :  


State two important uses of following metal

Uses of mercury  


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

Hydrochloric acid,


Write name.
 Alloy of sodium with mercury.


Write name. 

 The reagent that dissolves noble metals.


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.


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.

An amorphous substance which turns from pale green to black on strong heating evolving a colourless, acidic gas as the only gaseous product.


______ is the first scientist who used the term element.


All gases are ______.


Match the following

i. Silica a. Caustic potash
ii. Potassium hydroxide b. Sand
iii. Sodium hydroxide c. Calamine
iv. Zinc carbonate d. Caustic soda

Which metals are liquid at room temperature?


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