A coating of which material is commonly deposited on iron to protect it from corrosion and formation of rust?
Zinc
Iron reacts with moisture and oxygen present in the air to form rust, which is a form of corrosion.
To protect iron from this, a thin protective coating of zinc is deposited on its surface through a process called galvanization.
The zinc coating acts as a barrier that keeps moisture and oxygen away from the iron surface, and even if the coating gets scratched, the zinc corrodes in preference to the iron, protecting it further.
Hence, zinc is the material commonly coated on iron to protect it from corrosion and rust formation.
Which one of the following electric lighting devices contains mercury vapour and is toxic in nature?
Which of the following substances are basic in nature?
(A) Curd
(B) Vinegar
(C) Lime water
(D) Ant's sting
(E) Milk of magnesia
In an experiment, samples of two colourless solutions X and Y were taken. On adding turmeric solution, X acquired yellow colour and Y became brick red. What can you conclude about the nature of X and Y ?
Identify incorrect statement about non-metals :
Read the statements given below and choose the correct option.
Assertion : Salts, edible oils, vinegar, sugar, etc are common preservatives.
Reason : These enhance the flavour of food
Which of the following is a greenhouse gas?
I. Methane
II. Nitrous oxide
Which of the following is NOT a Fossil Fuel?
Which one of the following is used in soda-acid fire extinguishers?
The separation of two immiscible liquids can be done based on the difference in their_______.
Orange juice contains ______ acid due to which it tastes sour.