Advertisements
Advertisements
प्रश्न
With reference to the following metals state their use in daily life metal:
Zinc
उत्तर
Zinc:
- For galvanising iron sheets because Zinc coated iron sheets does not rust.
- In Dry cells as Zinc container acts as cathode.
APPEARS IN
संबंधित प्रश्न
Explain how, a reduction reaction of aluminium can be used for welding cracked machine parts of iron. Write a chemical equation for the reaction involved.
How are the properties of an alloy different from those of the constitutent elements?
Which of the following alloys contains mercury as one of the constituents?
(a) stainless steel
(b) solder
(c) duralumin
(d) zinc amalgam
Write ‘true’ or ‘false’ for the following statement.
Iodine acts as an antiseptic in the form of a tincture of iodine.
Statements given below are incorrect. Write the correct statements :
Aluminium is best conductor of electricity.
Tick (√) the most appropriate answer.
Graphite is used :
Name a metal which is best conductor of electricity :
Write name.
Molecular formula of the common ore of aluminium.
Write name.
The reagent that dissolves noble metals.
Write scientific reason.
Sodium is always kept in kerosene.
The electronic configuration of metal ‘A’ is 2,8,1 and that of metal ‘B’ is 2,8,2. Which of the two metals is more reactive? Write their reaction with dilute hydrochloric acid.
Which is the non-ionic compound in the compounds given below.
AgNO3 + Nacl → AgCl + NaNO3
State the position of the following in the periodic table:
Halogens
Give a reason why iron objects rust easily but the iron pillar at Qutab Minar has not rusted over the years.
The minerals from which the metal can be separated economically are called _______.
Aluminium: _______: gold : : electric insulator
Which of the following metals can displace the other two metals from their salt solutions?
Zinc | iron | copper |
The metal can be cut with a knife ______.
Why do metals appear shiny?
X [2, 8, 7] and Y [2, 8, 2] are two elements. Using this information, complete the following:
______ is the reducing agent.