List of top Chemistry Questions asked in JEE Main

Indicate the complex/complex ion which did not show any geometrical isomerism :
Given below are two statements:
Statement I: $\alpha$ and $\beta$ forms of sulphur can change reversibly between themselves with slow heating or slow cooling.
Statement II: At room temperature the stable crystalline form of sulphur is monoclinic sulphur.
Which one of the following compounds will liberate \(CO_2\) when treated with \(NaHCO_3\)?
Match List - I with List - II : List - I (Class of Drug)
(a) Antacid
(b) Artificial Sweetener
(c) Antifertility
(d) Tranquilizers List - II (Example)
(i) Novestrol
(ii) Cimetidine
(iii) Valium
(iv) Alitame

Which one of the following compounds is not aromatic ? 

In the leaching of alumina from bauxite, the ore expected to leach out in the process by reacting with NaOH is :

Consider the above reaction, and choose the correct statement : 

 

Which one of the following is correct for the adsorption of a gas at a given temperature on a solid surface ?
Which one of the following correctly represents the order of stability of oxides, \( X_2O \); (X = halogen) ?
Which one of the following lanthanides exhibits +2 oxidation state with diamagnetic nature ? (Given Z for Nd=60, Yb=70, La=57, Ce=58)
Which one of the following complexes is violet in colour ?

Which one of the following is the correct PV vs P plot at constant temperature for an ideal gas ? (P and V stand for pressure and volume of the gas respectively) 

The water soluble protein is :

Match List - I with List - II : 

Choose the most appropriate answer from the options given below : 
 

Consider the given reaction, percentage yield of : 

Tyndall effect is more effectively shown by:
The secondary valency and the number of hydrogen bonded water molecule(s) in CuSO₄·5H₂O, respectively, are :
Potassium permanganate on heating at 513 K gives a product which is :

Which one of the following compounds will give orange precipitate when treated with 2,4-dinitrophenyl hydrazine ? 

Ellingham diagram is a graphical representation of :
The number of S=O bonds present in sulphurous acid, peroxodisulphuric acid and pyrosulphuric acid, respectively are :

Which of the following reagent is suitable for the preparation of the product in the above reaction ? (reaction of ketone to alkane)

Which of the following reagent is used for the following reaction ? $CH_3CH_2CH_3 \to CH_3CH_2CHO$
Given below are two statements : Statement I : Non-biodegradable wastes are generated by the thermal power plants. Statement II : Bio-degradable detergents lead to eutrophication. In the light of the above statements, choose the most appropriate answer from the options given below :

The correct structures of trans-[NiBr₂(PPh₃)₂] and meridional-[Co(NH₃)₃(NO₂)₃], respectively, are :