Question
Which of the following element is used for the
manufacture of the safety-matches?Solution
The element phosphorus is used to produce safety matches. During manufacture, the match stick is soaked in ammonium phosphate, which prevents ‘afterglow’ once the flame has gone out, and paraffin, which ensures that it burns easily.
Whitening of hair is caused by the deficiency of _________?
Which of the following metals is the lightest?
Common name of Sodium Carbonate is?
Which of the following metal has the highest Melting point?
Which of the following rock is not sedimentary rock?
Which material is commonly used for making casts and sculptures?
Pentane has _____ structural isomers.
Match the following Functional group with their respective Chemical name.
Functional Group �...
Itai-Itai disease is caused by exposure to which metal?
Which of the following glass absorbs ultraviolet rays which are harmful for the eyes?
