Non-metals are never used in cooking utensils because:
Non-metals are poor conductors of heat. So, they can't be used for cooking utensils.
Iron burns in air to form:
Mercury is transported in the container's made up of
Which of the following is not a characteristic of metal?
Silver metal becomes black on exposure to air by the coating of
Which of the following metals reacts vigorously with oxygen?
Reactivity order of the above-mentioned metals is
Sodium > Magnesium > Zinc > Iron > Copper
Metals are refined by using different methods. Which of the following metals are refined by electrolytic refining?
(i) Au(ii) Cu(iii) Na(iv) K
Out of sulphur and gold, which will have a higher melting point?
The ability of the metal to be drawn into sheets is known as
The ability of the metal to be drawn into sheets is known as malleability.
Which of the following metals exists in free state?
Metals that produce ringing sounds are said to be
Metals that produce ringing sounds are said to be sonorous.
The molecules of metals and non-metals in vapour state are.
Haematite is an ore of
Hematite is heavy and relatively hard oxide mineral, ferric oxide (Fe2O3), that constitutes the most important iron ore because of its high iron content (70 percent) and its abundance. Its name is derived from the Greek word for “blood,” in allusion to its red colour.
The maximum number is of: