List of top Chemistry Questions

Identify the major product from the following reaction sequence:

Identify the product(s) formed in the following reaction:

Glycylalanine is a dipeptide formed by the minimum instruction time. It is made up of which amino acids?
Which compound is formed on catalytic hydrogenation of carbon monoxide at high pressure and temperature in presence of ZnO–Cr$_2$O$_3$ catalyst?

Identify the major product formed from the following reaction?

Carbohydrates are stored in plants and animals in which of the following forms respectively?

Identify the major product of the following reaction:

The homonuclear complex in the following is:
Assertion (A): 16th group elements have higher ionization enthalpy values than 15th group elements in the corresponding periods.
Reason (R): 15th group elements have half-filled stable electronic configuration.
Assertion (A): Fluorine has smaller negative electron gain enthalpy than chlorine.
Reason (R): The electron-electron repulsion is higher in chlorine than in fluorine.
Identify the isoelectronic pair of ions from the following

Match the following:

List -- I (Enzyme)List -- II (Reaction)
A.InvertaseI.Maltose → Glucose
B.PepsinII.Sucrose → Glucose + Fructose
C.DiastaseIII.Proteins → Peptides
 IV.Starch → Maltose
The correct order of coagulating power of the following ions to coagulate the positive sol is
I $[\text{Fe}(\text{CN})_6]^{4-}$, II $\text{Cl}^-$, III $\text{SO}_4^{2-}$
The rate constant of a reaction at 500 K and 700 K are 0.02 s$^{-1}$ and 0.2 s$^{-1}$ respectively. The activation energy of the reaction (in kJ mol$^{-1}$) is ($R = 8.3 \, \text{J K}^{-1} \text{mol}^{-1}$)

The IUPAC name of the following compound is:

0.05 mole of a non-volatile solute is dissolved in 500 g of water. What is the depression in freezing point of the resultant solution? ($K_f(\text{H}_2\text{O}) = 1.86 \, \text{K kg mol}^{-1}$)
The gaseous mixture used for welding of metals is
96.5 amperes current is passed through the molten AlCl$_3$ for 100 seconds. The mass of aluminum deposited at the cathode is (Atomic weight of Al = 27 u)
Which of the following is correct for fcc lattice?
Which of the following form an ideal solution?
An element crystallizing in fcc lattice has the density of 8.92 g cm$^{-3}$ and edge length of 3.61$\times$10$^{-8}$ cm. What is the atomic weight of the element? (N=6.022$\times$10$^{23}$ mol$^{-1}$)
The two major constituents of Portland cement are:
Calcium carbide reacts with heavy water (D$_2$O) to form a compound $ X $ and Ca(OD)$_2$. What is the hybridization of carbon atom(s) in $ X $?
Identify P and Q in the following reaction: $$ \text{P} + \text{Q} \rightarrow [\text{B(OH)}_4]^– + \text{H}_3\text{O}^+ $$
The relative basic strength of the compounds is correctly shown in the option: