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प्रश्न
Fill in the Blank and Rewrite the Statements:
Elements showing properties of both metals and nonmetals are known as _________.
उत्तर
Elements showing properties of both metals and nonmetals are known as metalloids.
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संबंधित प्रश्न
Name one metal which has a low melting point.
Which property of copper and aluminium makes them suitable for making cooking utensils and boilers?
Which property of copper and aluminium makes them suitable for making electric wires?
Name the non-metal which is used as a rocket fuel (in liquid form).
Name two metals which react violently with cold water. Write any three observations you would make when such a metal is dropped into water.
State one use of Sulphur.
Which of the following metal exists in the liquid state?
(a) Na
(b) Ag
(c) Cr
(d) Hg
Name the metals present in the following alloys
Brass
Give four differences between metals and non-metals with reference to their:
- Melting point and boiling point
- The conductivity of heat and electricity
- Malleability
- Solubility
Select from the following ist:
`Fe_2O_3, , NO, PbO, Mn_2O_7`
Neutral oxide ……………..
Name:
a non metal which is lustrous
Name:
a non metal which can form a positive ion
Name a non-metal which can form a positive ion.
How are metals like sodium, potassium, and calcium obtained? Give equations.
Ankita bought some Glucose Powder. She felt is was adulterated with starch powder. How would she test it?
Complete the statement given below, by filling in the blank with the correct word:
A metal which floats on water _____
Give reason for the following:
Potassium reacts vigorously with cold water while copper does not react with water or steam.
Select the appropriate option for the following statement:
The element from the halogen family which is most abundant
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?
Non – metals are ______.
