List of top Chemistry Questions

Which one of the following nitrates will decompose to give NO₂ on heating?

Propanone and Propanal are:

In the reaction: \(\text{Aniline} \xrightarrow{\text{NaNO}_2/\text{dil. HCl}} P \xrightarrow{\text{Phenol/NaOH}} Q\)

Solubility product of CaC₂O₄ at a given temperature in pure water is 4 × 10⁻⁹ mol²/L². Solubility of CaC₂O₄ at the same temperature is:

Vapour pressure of a solution containing 18 g of glucose and 178.2 g of water at 100°C is:
(Vapour pressure of pure water at 100°C = 760 torr)

A mixture of phenol and aniline shows negative deviation from Raoult's law. This is due to the formation of:

Which one of the following pairs will show positive deviation from Raoult's Law?

The value of 'A' in the equation \( \lambda_m = \lambda_m^0 - A\sqrt{C} \) is same for the pair

The compound is

Identify the incorrect statement from the following:

The number of atoms in 4.5 g of a face-centred cubic crystal with edge length 300 pm is:

10 mL of gaseous hydrocarbon on combustion gives 40 mL of CO\(_2\)(g) and 50 mL of water vapour. The total number of carbon and hydrogen atoms in the hydrocarbon is ______ .

Following Kjeldahl's method, 1g of organic compound released ammonia that neutralized 10 mL of 2M H\(_2\)SO\(_4\). The percentage of nitrogen in the compound is _________.%.

Total number of isomeric compounds (including stereoisomers) formed by monochlorination of 2-methylbutane is________.

Given below are two statements :
Statement (I) : Dimethyl glyoxime forms a six-membered covalent chelate when treated with NiCl2 solution in presence of NH4OH.
Statement (II) : Prussian blue precipitate contains iron both in (+2) and (+3) oxidation states. In the light of the above statements,
choose the most appropriate answer from the options given below:

Solubility of calcium phosphate (molecular mass, \( M \)) in water is \( W_g \) per 100 mL at \( 25^\circ C \). Its solubility product at \( 25^\circ C \) will be approximately:

Acid D formed in above reaction is :

Given below are two statements:
Statement (I): \( \text{SiO}_2 \) and \( \text{GeO}_2 \) are acidic while \( \text{SnO} \) and \( \text{PbO} \) are amphoteric in nature.
Statement (II): Allotropic forms of carbon are due to property of catenation and \( p\pi-d\pi \) bond formation.
In the light of the above statements, choose the most appropriate answer from the options given below:

\([ \text{Co(NH}_3)_6 ]^{3+}\) and \([ \text{CoF}_6 ]^{3-}\) are respectively known as:

The functional group that shows negative resonance effect is:

Match List - I with List - II

Choose the correct answer from the options given below :

The number of radial node/s for 3p orbital is:

In the given reactions identify A and B.

Which among the following has highest boiling point?