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Write Name. Alloy of Sodium with Mercury. - Science and Technology 1

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प्रश्न

Write name.
 Alloy of sodium with mercury.

एक पंक्ति में उत्तर

उत्तर

 Sodium amalgam, commonly denoted as Na(Hg), it is an alloy of mercury and sodium.

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अध्याय 8: Metallurgy - Exercises [पृष्ठ १०८]

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बालभारती Science and Technology 1 [English] 10 Standard SSC Maharashtra State Board
अध्याय 8 Metallurgy
Exercises | Q 1.1 | पृष्ठ १०८

संबंधित प्रश्न

Give a reason for Alkali metals are good reducing agents.


Name two alloys of iron. What elements are present in these alloys?


Mention two uses of the following metals and non-metals  

Gold 


Give reasons 

Magnesium is used in fire works. 


Fill in the blank 

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


Name a metal which is not malleable : 


State two important uses of following metal 

Uses of tin  


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

Hydrochloric acid,


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

Sulphuric acid


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.


Match the columns.

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

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.

What is ductility?


Which of the following property is generally not shown by metals?


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

______ is the first scientist who used the term element.


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


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


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