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प्रश्न
Write scientific reason.
The stainless steel vessels in Kitchen have copper coating on the bottom.
उत्तर
The stainless steel vessels in the Kitchen have a copper coating on the bottom because copper is a good conductor of heat and electricity; by using copper cookware, any meal can be prepared in a perfect and gentle way. They are the best pots and pans for cooking and roasting. This is particularly due to the fact that copper has excellent material properties and is cheap metal as compared to other metals.
संबंधित प्रश्न
You are given a hammer, a battery, a bulb, wires and a switch.
- How could you use them to distinguish between samples of metals and non-metals?
- Assess the usefulness of these tests in distinguishing between metals and non-metals.
Choose the correct answer from the options given below :
The two main metals in Bronze are:
(A) Copper and zinc
(B) Copper and lead
(C) Copper and nickel
(D) Copper and tin
If an element has a low ionization energy then it is likely to be ______________ (metallic / non metallic).
Choose the most appropriate answer of the following:
This is not an alloy of copper:
(A) Brass
(B) Bronze
(C) Solder
(D) Duralumin.
Name the metal which is the poorest conductor of heat.
Name two metals which are used for making jewellery and to decorate sweets.
Which property of iron metal is utilised in producing iron sheets required fro making buckets?
Which property of copper metal is utilised in making thin wires?
(a) Give the names and formulae of one metal chloride and one non-metal chloride.
(b) State an important property in which these metal chloride and non-metal chloride differ.
(c) Why do they differ in this property?
Fill in the blank
A chemical compound that makes up the striking heads of match sticks is .........................
Write ‘True’ or ‘False’ in front of following statement.
Stainless steel is used for making power transmission wires.
Write ‘True’ or ‘False’ in front of following statement.
Graphite is used in making filaments of electric bulb.
Tick (√) the most appropriate answer.
Copper metal is used in :
Tick (√) the most appropriate answer.
A metal which is a poor conductor of electricity is:
Name the non-metal and its natural form, which is the hardest substance.
Name the non-metal present in abundance in the earth's crust.
Define metal and non-metal on the basis of electron loss or gain.
Name:
a metal which is brittle
Name two metals which react with cold water.
Name:
a metal whose oxide is reduced only by carbon
How many valence electrons are present in:
(i) metals and
Give reason for the following:
Potassium reacts vigorously with cold water while copper does not react with water or steam.
Give reason for the following:
Rusting reduces the structural strength of iron.
Select the appropriate option for the following statement:
The element which shows properties of both metals and non-metals.
_______ is basic oxide.
Distinguish between:
Metals - Nonmetals (physical characteristics)
Tabulate the differences between metals and non-metals.
Which of the following non-metals is a liquid?
The metal is stored in kerosene ______.
