List of top Chemistry Questions

In which of the following, ions are correctly arranged in the increasing order of oxidizing power?
In Ostwald process of manufacture of nitric acid, 12 moles of NH3 was completely oxidized in air by a catalyst at 500 K and 9 bar. The resultant NO(g) was completely oxidized to NO2(g) and dissolved in water to form nitric acid and NO(g). What is the weight (in g) of nitric acid formed?
The oxygen carrying capacity of blood is reduced due to binding of haemoglobin with
The technique used to purify an organic compound present in aqueous medium and which is less soluble in organic solvent is
At 300 K, the vapour pressure of liquids A and B are 600 and 500 mm of Hg respectively. Two moles of A and three moles of B are mixed. The mole fractions of A and B in vapor state are respectively
Two statements are given below. Statement I: Adsorption of a gas on the surface of charcoal is primarily an exothermic process.
Statement II: A closed vessel containing \( O_2(g) \), \( H_2(g) \), \( Cl_2(g) \), \( NH_3(g) \) has a pressure of 9 atm. About 1 g of charcoal was added to this vessel and after some time its pressure is \( P' \) atm. It is observed that \( P'>P \). Choose the correct answer.

Match the following: List I (Ore) List II (Composition) 
 

Identify the set of molecules which act as bleaching agents only by oxidation
Which of the following is correct statement?
Which of the following does not evolve \( O_2 \) when made to react with water?

Two statements are given below: 

I. Milk sugar is a disaccharide of \( \alpha \)-D-galactose and \( \beta \)-D-glucose. 
II. Sucrose is a disaccharide of \( \alpha \)-D-glucose and \( \beta \)-D-fructose. The correct answer is:

The effects that aspirin can produce in the body are: 

 
 

At T(K), the value of \( K_c \) for the reaction 
\[ AO_2(g) + BO_2(g) \leftrightarrow{} AO_3(g) + BO(g) \] is 16. In a one-litre closed flask, 1 mole each of \( AO_2(g) \), \( BO_2(g) \), \( AO(g) \), and \( BO(g) \) were taken and heated to T(K). 
What are the equilibrium concentrations (in mol L\(^{-1}\)) of \( BO_2(g) \) and \( BO(g) \) respectively? 
 

A hydrocarbon containing C and H has 92.3\% of C. When 52 g of hydrocarbon is completely burnt in oxygen, \( x \) moles of water and \( y \) moles of CO\(_2\) were formed. The liberated water is sufficient to liberate one mole of H\(_2\) when reacted with sodium metal. What is the weight (in g) of O\(_2\) consumed?
What is X in the following reaction? \[ CO(g) + 2H_2(g) \xrightarrow{X} CH_3OH(l) \]
The number of products formed by thermal decomposition of lithium nitrate, sodium nitrate respectively are:
Identify the correct statements from the following: I. \( H_2O_2 \) oxidizes PbS to \( PbSO_4 \)
II. \( H_2O_2 \) is used in the industrial preparation of sodium perborate
III. \( H_2O_2 \) is insoluble in water
From the following, identify the set that contains all meta directing groups:
Two statements are given below Statement I: The resonance structure with more number of covalent bonds is less stable. Statement II: The position of nuclei does not change in resonance structures.

 A few sols are given below:
As2S3 sol, starch sol, Al2O3 ·
xH2O sol, TiO2 sol, gold sol, congo red sol, blood, methylene blue sol, CdS sol
The number of positively charged sols in the above list is:

The iodine oxide which is used in the estimation of carbon monoxide is:
Which of the following oxoacids of phosphorus has two P-H bonds?
The metal having the highest melting point among lanthanides is
Which of the following is correct?

Match the following: