Methane contributes towards global warming so it is called a _________________ gas.
Which one of the following substances does not have a melting point
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Which one of the following mixture is homogeneous
Which of the following is an element
Among the given nutrients, milk is a poor source of
Which one of the following is not a mixture
' Misch metal ' is widely used in manufacture of which of the following
The isotopes of chlorine with mass number 35 and 37 exist in the ratio of
A gas is found to have the formula . Its vapour density is 70.The value of n must be