List of top Chemistry Questions

In which of the following cases a chemical reaction is possible ?
Given E0Fe+3/Fe+2=+0.76V and E0½2l-=+0.55V. The equilibrium constant for the reaction taking place in galvanic cell consisting of above two electrodes is [\(\frac{2.303RT}{F}\)=0.06]
Solute ‘X’ dimerises in water to the extent of 80%.2.5g of ‘X’ in 100g of water increases the boiling point by 0.3∘C. The molar mass of ‘X’ is [Kb​=0.52Kkgmol−1]
Which one of the following is an isotonic pair of solution ?
The pair of electrolytes that posses same value for the constant (A) in the Debye - Huckel - Onsagar equation, $\lambda_m = \lambda^0_m - A\sqrt{C}$ is
Silicon doped with gallium forms
A metal crystallises in face centred cubic structure with metallic radius 2​A∘. The volume of the unit cell (in m3) is
A metal exists as an oxide with formula M0.96​O. Metal M can exist as M+2 and M+3 in its oxide M0.96​O. The percentage of M+3 in the oxide is nearly
Which of the following is Not a green house gas?
Identify ‘X’ in the following reaction
Identify X in the following reaction
Which of the following is not a pair of functional isomers?
The mental that produces H2 with both dil HC/ and NaOH (aq) is
The oxide of potassium that does not exist is
The percentage s-character of the hybrid orbitals in\( No^+_2\), \(NO^-_3\) and\( NH^+_4\) respectively are
A Lewis acid 'X' formed by the reaction of BF3 with LiA/H4 in ether medium to gives a highly toxic gas. This gas when heated with NH3 gives a compound commonly known as inorganic benzene. The gas is
The oxidation number of nitrogen atom in MH4NO3 are
When the same quantity of heat is absorbed by a system at two different temperatures T1​ and T2​, such that T1​>T2​, change in entropies are ΔS1​ and ΔS2​ respectively. Then
The formal charge on central oxygen atom in ozone is
The IUPAC name of the complex $[Pt(NH_3)_2Cl(NH_2CH_3)]Cl$ is :
Which one of the following layers of a metallic compound can be formed on electric wire as insulator during rainy season and causes the power supply to our home from the electric pole to be interrupted?
The chemical equation BaCl2 + Na2SO4→BaSO 4 + 2NaCl is an example for which type of the following chemical reactions? 
The volume occupied by 10 grams of hydrogen gas at STP is
As per Moeller chart, the correct ascending order of their energies of the following orbitals is
The names of the sub-shells present in M shell (n= 3) are
The number of water molecules present in one formula unit of gypsum is