List of top Chemistry Questions

The mole fraction of a solute in 2.0 molal aqueous solution is :
On electrolysis of very dilute aqueous solution of NaCl using platinum electrodes :
The correct order of decreasing basic strength in aqueous solution of the following is :
Which of the following transition metals shows +1 and +2 oxidation states ?
Which reagent is used to distinguish between primary, secondary and tertiary amines ?
Which of the following product is formed when salicylic acid is treated with (CH3CO)2O in the presence of acid ?
The oxidation number of Pt in [Pt(en)2Cl2]2+ is :
Identify correct set(s) of X, Y, Z in the following reaction sequence. \[ Styrene \xrightarrow{(C_6H_5CO)_2O_2, HBr} Product \xrightarrow{(ii)X} \xrightarrow{(iii)Y} Z \]
What are C and E in the following reaction sequence?
Which of the following statements about \(C_6H_5N_2BF_4\) are correct? I. With NaF gives \(C_6H_5F\) II. With NaNO\(_2\)/Cu gives \(C_6H_5NO_2\) III. On heating gives \(C_6H_5F\) IV. With HNO\(_3\) gives \(C_6H_5NO_2\)
Glycosidic linkage in maltose is present between
The detergent used in tooth pastes is 'X' and in hair conditioners is 'Y'. What are X and Y respectively?
What are X, Y, Z in the following reactions?
Benzene gets converted to X in reaction (A) and Y in reaction (B). X is oxidized by ammoniacal AgNO\(_3\) but Y is not. Identify A and B.
Natural rubber is the addition polymer of monomer X and neoprene is the addition polymer of monomer Y. What are X and Y respectively?
Rate determining step in the following reactions I and II respectively is
The metal refined by Mond process is X and the metal refined by Van Arkel method is Y. What are X and Y respectively?
Which of the following exhibit optical isomerism? I. \([Fe(C_2O_4)_3]^{3-}\) II. \([Cr(H_2O)_4Cl_2]^+\) III. \([Co(NH_3)_2(en)_2]^{3+}\)
What are X and Y in the following reactions? \[ 2X_2(g)+2H_2O(l)\rightarrow4H^+(aq)+4X^-(aq)+O_2(g) \] \[ Y_2(g)+H_2O(l)\rightarrow HY(aq)+HOY(aq) \]
Observe the following reactions
Which are common for both Y and W? I. Four P-OH bonds II. Two P-H bonds III. Two \(P=O\) bonds IV. One P-O-P bond
In which of the following sets, the reaction and catalyst are correctly matched?
Match the following orders with their properties.
Observe the reaction sequence
Compound A forms sodium derivative with \(NaNH_2\). Find B and D.
Gold number of a protective colloid A is x. A mixture is prepared by adding 50 mL of 10% NaCl solution to 500 mL gold sol. What minimum mass of A is needed to prevent coagulation?
Identify the edge lengths \((a,b,c)\) in the unit cell shown below.