Advertisements
Advertisements
प्रश्न
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.
उत्तर
Mercury
APPEARS IN
संबंधित प्रश्न
Give an example of a metal which is the best conductor of heat.
Which of the following can be beaten into thin sheets?
Which property of copper and aluminium makes them suitable for making electric wires?
Name two non-metals which are both brittle and non-ductile.
State one use of Hydrogen.
State one use of Sulphur.
Name the metal which is the best conductor of heat and electricity.
(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?
The electronic configurations of three elements X, Y and Z are:
| X : 2 | Y : 2, 8, 7 | Z : 2, 8, 2 |
Which of the following is correct regarding these elements?
(a) X is a metal
(b) Y is a metal
(c) Z is a non-metal
(d) Y is a non-metal and Z is a metal
Name a non-metal that is used to kill germs in water
Name a non-metal that is used for cancer therapy
Name a metal which is lighter than water :
Name the non-metal and its natural form, which is the hardest substance.
Name a non-metal which is liquid form at room temperature.
Name:
a metal which is a bad conductor of heat and electricity
`Mg -— → Mg^(2+)`
Name:
a non metal which is lustrous
Name:
two non metals which are monoatomic
Identify the odd term.
With reference to the physical properties of metals and non-metals, state the following exception.
A non-metal which has low tensile strength
Differentiate between metals and non-metals with reference to –
(a) number of electrons in outer or valence shell
(b) formation of cation and anion
(c) reaction with dilute acids.
Give a reason why – properties of metals are related to their activity or reactivity series of metals. Explain the same with reference to potassium and iron in the series.
Give reason for the following:
Rusting reduces the structural strength of iron.
Find the odd one out and give its explanation.
Write the name.
The reagent which dissolves noble metals.
Give two examples of alloy.
Non-metals form covalent chlorides because ____________.
The metal is stored in kerosene ______.
