List of top Chemistry Questions

Which of the following formula represents Alkene?
By heating ethyl alcohol from 160°C to 170°C, we obtain:
What is the molecular formula of urea?
What is the oxidation state of sulfur in H\(_2\)SO\(_4\)?
What is the IUPAC name of isopropyl alcohol?
How many valence electrons are there in the outer shell of Cl\(^{-}\)?
The formula of the nitrate of a metal is \( M(NO_3)_2 \). What will be the formula of its phosphate?
What is the scientific name of the person who made the periodic table?

What is the IUPAC name of the following compound ?

What is the method to remove temporary hardness of water?
Which of the following is a chemical transformation?
Which of the following is an alcohol?
Which of the following reactions is suitable for converting an acid amide to an imidazole?
Which of the following salts has the highest pH in water?
In the modern periodic table, the elements are arranged in:
The atomic number describes which of the following:
The number of valence electrons in Chromium (atomic number 24) is:
The energy of the third orbit of \( {Li}^{2+} \) ion (in J) is:

Observe the following sets: 

Which of the above sets are correctly matched?

The equation that represents ‘coal gasification’ is:
As per standard reduction potential values, which is the strongest reducing agent among the given elements?
A Lewis acid 'X' reacts with LiAlH$_4$ in either medium to give a highly toxic gas, 'Y'. 'Y' when heated with NH$_3$ gives a compound known as inorganic benzene. 'Y' burns in oxygen and gives H$_2$O and 'Z'. 'Z' is:
The method for preparation of water gas is:
The BOD values for pure water and highly polluted water are respectively:
When chlorine reacts with hot and conc. NaOH, the products formed are