List of top Chemistry Questions

The oxidation state of chromium in the final product formed in the reaction between KI and acidified $K_2Cr_2O_7$ solution is:

What is the IUPAC name of the organic compound formed in the following chemical reaction?
Acetone \( \xrightarrow{\text{(i) } C_{2}H_{5}MgBr,\ \text{dry ether} \;\;\text{(ii) } H_{2}O,\ H^{+}} \) Product

The equilibrium concentrations of the species in the reaction A + B \(\rightleftharpoons\) C + D are 2, 3, 10 and 6 mol L\(^{-1}\) respectively at 300 K. \(\Delta\)G\(^{0}\) for the reaction is
(R = 2 cal/mol K)

The products obtained by the ozonolysis of 2-methylbut-1-ene are:

Identify the product formed when phenol reacts with bromine water.

Which aldehyde does not give Fehling test?

What is the name of the element which is known as Eka-Aluminium?

Benzene diazonium salt in the presence of Cu/HBr will give bromobenzene (C\(_6\)H\(_5\)Br) and release nitrogen gas (N\(_2\)). This reaction is known as:

Find the alkene which gives 2 mol of acetone by ozonolysis.

2-methyl propene is obtained as product when sodium methoxide reacts with

Two solutions that are isotonic have same ......

When CO is reacted with \( H_2 \) at 573 K, methanol is formed. Which is the catalyst used in this process?

Which of these have the least bond length (in pm)?

Which of the following is used to convert sodium chromate to sodium dichromate in the preparation of potassium dichromate?

Which of the following series in hydrogen spectrum corresponds to UV radiation?

First element in 3d series which shows +2, +3, +4, +6 oxidation state

Increasing order of metallic character

Which of the following is allylic alcohol?

Which of the following has a planar structure with two lone pairs?

Enthalpy of formation of \( \text{C}_6\text{H}_6 \), \( \text{CO}_2(g) \) and \( \text{H}_2\text{O}(l) \) are -393.5, -285.8 and +48.5 KJ/mol respectively. Find the enthalpy of combustion of \( \text{C}_6\text{H}_6 \):

Which of the following statements regarding the structure of CO\(_2\) is correct?

Lactose is composed of:

Relationship between \( t_{90} \) and \( t_{99} \) for a first order reaction: