List of top Chemistry Questions

Arrange the following compounds in the increasing order of their reactivity when each of them is reacted with chloroethane / anhydrous AlCl₃.

Identify the pair of molecules in which one of them is a molecule with an odd electron and the other has an expanded octet.

In the estimation of element X in an organic compound, 0.8 g of the compound containing X was heated with fuming HNO₃ and the cooled product was treated with barium chloride. The mass of barium sulphate precipitated was 1.2 g. What is the percentage of element X and what is the formula of the violet-coloured compound formed when Lassaigne's extract of the organic compound is treated with sodium nitroprusside?

Identify the product [C] formed at the end of the reaction below: $ 1,1,2,2-\text{Tetrabromopropane} + 2 \text{Zn (s)}/ \text{Ethanol} \rightarrow [B] $ $ [B] + 2 \text{moles of HBr} \rightarrow [C] $

Corrosion of silver results in the formation of

Poling process is used to

Tooth enamel is made up of

Identify the correct statement.

Niels Bohr received Nobel Prize in

Reactivity increasing order of the following metals will be

If pH of rain water is less than ____ ,then it is called acid rain.

An element \(_{13}X^{27}\) forms ionic compound. What is the charge on \(X\) in ionic compound:

The maximum number of electrons in M shell is

Linus Pauling proposed the concept of

During corrosion, a metal will

Which of the following orbitals does not exist?

Electronic configuration of O^-2 ion is

Which one of the following can be used as acid-base indicator to detect acidic or basic nature of solution?