List of top Chemistry Questions

Which carbon atoms of glucose, numbered from 1 to 6 forms a hemiacetal structure between -CHO and -OH groups.?
Which from following reagents is used to prepare alkyl isocyanides from RX?
Among the given ligands, the negative ligand is
Which of the following compounds is obtained when Bromoethane is reacted with silver acetate?
Identify the product obtained when ketone reacts with \(\text{NH}_2\)-\(\text{NH}_2\).
Identify the reagent used in the transformation of Ketone into semicarbazone.
Identify the alcohol obtained when aldehyde other than formaldehyde is treated with Grignard's reagent followed by hydrolysis.
Identify the correct statement regarding lyophilic colloid from the following.
Which of the following is the correct decreasing order of oxidizing power of perhalate ions?
Which of the following statements is correct for the spontaneous adsorption of a gas?
In the Charring process, concentrated sulfuric acid reacts with sugar to give sugar charcoal. What is the role of conc. \(\text{H}_2\text{SO}_4\) in this reaction?
Which of the following comparisons is correct for \(\Delta _0\) of the following complexes?
I- \([\text{Co(H}_2\text{O)}_6]^{2+}\)
II- \([\text{Co(H}_2\text{O)}_6]^{3+}\)
III- \([\text{Fe(H}_2\text{O)}_6]^{3+}\)
IV- \([\text{Fe(CN)}_6]^{3-}\)
Which of the following elements is doped to a fiber amplifier in an optical fiber communication system?
For the reaction, \(A+B\rightarrow P\), the rate law is rate \(= k[A][B]^2\). The rate of reaction is \(0.25\text{ Ms}^{-1}\) when \([A] = 1\) M, \([B] = 0.2\) M at \(25^{\circ}\)C. Calculate the rate constant of the reaction at the same temperature.
Identify from following cell reactions that is spontaneous under standard state of conditions.
Identify a type of order of reaction that its unit of rate constant is mol dm\(^{-3}\)s\(^{-1}\) from the following.
Identify the correct name of law.
"At infinite dilution each ion migrates independent of co-ion and contributes to total molar conductivity of an elctrolyte irrespective of the nature of other ion to which it is associated."
In first order reaction, 20 % concentration remains after 10 min. What would be the rate constant of reaction if \(log_{10}(5) = 0.6989\)?
Identify the dimensional nature of nanoparticles by the following.
Calculate the molar conductivity of 0.2 M KCl solution at 298 K (\(k = 0.0248 \Omega ^{-1}\)cm\(^{-1}\))
Which of the following dopant is NOT used in Ge to obtain n-type semiconductor?
An element with a molar mass 27g mol\(^{-1}\) forms a cubic unit cell. Calculate the number of atoms present in a unit cell if the density of metal is 2.7g cm\(^{-3}\).
\([a^3\times N_A = 40\) cm\(^3\) mol\(^{-1}]\)
Identify a pair of gases from following that does not obey Henry's law.
2 g nonelectrolyte solute when dissolved in 50 g water increases its boiling point by 0.13 K.
Calculate the molar mass of solute if molal elevation constant of water is 0.52 K kg mol\(^{-1}\)
A compound formed by elements A and B crystallizes in a cubic structure where A atoms are at the corner of the cube and B atoms are at the center of the cube. What is the formula of the compound?