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प्रश्न
What is an alloy?
उत्तर
The homogeneous mixture formed by mixing a metal with other metals or nonmetals in certain proportion is called an alloy.
संबंधित प्रश्न
Write any three differences between metals and non-metals with respect to their physical properties.
Give an example of a metal which is a liquid at room temperature.
Give an example of a metal which is the best conductor of heat.
Which property of copper and aluminium makes them suitable for making electric wires?
Name two metals which are used for making domestic utensils and factory equipment.
Name two metals which are both malleable and ductile.
What is the nature of the oxide SO2? What happens when it is dissolved in water? Write the chemical equation of the reaction involved.
Name two physical properties of sodium in which it's behaviour is not as expected from it's classification as metal.
Name two physical properties of carbon in which it's behaviour is not as expected from it's classification as non-metal.
Name a non-metal that is used for filling into electric bulbs
Fill in the blank:
A metal stored in kerosene oil is _______
The noble gas used in advertising signboards is
Write ‘True’ or ‘False’ in front of following statement.
Stainless steel is used for making power transmission wires.
What do you understand by the term metal?
State two important uses of following non-metal
Uses of graphite
State the composition of given alloy:
Bronze
What are metalloids: Give examples.
Name a liquid non-metal.
Distinguish between metals and non metals on the basis of:
(i) ion formation, (ii) discharge of ions, (iii) nature of oxide formed, (iv) oxidizing and reducing property, (v) reaction with acids.
Name:
a metal which lacks ductility
Name:
two non metals which are monoatomic
Give the balanced reactions for the following:
Sodium is dropped in water
Give the effect of heat on metal oxides based on the activity series ?
How many valence electrons are present in:
(ii) non-metals?
Name the following:
or
With reference to the physical properties of metals and non-metals, state the following exception.
A metal which is liquid at room temperature.
The metal other than aluminium, which has a strong affinity for oxygen is ______.
Fill in the Blank and Rewrite the Statements:
Elements showing properties of both metals and nonmetals are known as _________.
Match the following:
| Column A | Column B |
| (a) Helium | (1) Electric bulb |
| (b) Neon | (2) Thermometer |
| (c) Argon | (3) Semiconductor |
| (d) Germanium | (4) Weather balloons |
| (e) Mercury | (5) Advertising signboards |
_______ is good conductor of heat but bad conductor of electricity.
Brass : Aluminium and zinc : : Bronze : ______
Oxygen, hydrogen, and sulphur are examples for
A form of non-metal which has high ductility is
Which of the following non-metal is lustrous?
Alloys are homogeneous mixtures of a metal with a metal or non-metal. Which among the following alloys contain non-metal as one of its constituents?
The composition of aqua-regia is
Paheli bought a statue made up of copper. To her surprise, it acquired a dull green coating after a couple of months. Explain the reason.
