Chemistry Questions

Which of the following inert gases is placed in period 4 of the periodic table?

Atomic number of which of the following elements is greater than that of Iodine

Chemical Formula of Water is _____ .

30 litres of salt solution contains 5% salt. How many litres of water must be added so as to get a resultant solution containing 3%salt?

The Chemical formula of Ammonium nitrate is ___________.

Alkali metals can

Of the following commonly used materials, the one that is not an alloy is

In a compound the elements are always present in definite proportions by ______