List of top Chemistry Questions

Identify the major product formed in the following reaction sequence:
ch3cocl/anhyd alcl3
The velocity of the electron in Bohr’s first orbit is \( x \times 10^6 \, \text{ms}^{-1} \). The deBroglie wavelength associated with it (in nm) is (Given: \( m_e = 9 \times 10^{-31} \, \text{kg}, \, h = 6.6 \times 10^{-34} \, \text{Js} \))
Identify the isoelectronic pair of ions from the following
38.6 A of current is passed for 100 s through aqueous CuSO4 using platinum electrodes. Find mass of Cu deposited and volume of gas evolved (Cu = 63.54 g mol-1)
The statement related to law of definite proportions is:
Which of the following can undergo disproportionation reaction on heating with Conc. Alkali?
The shapes of \( \text{XeF}_2 \), \( \text{XeF}_4 \), and \( \text{XeO}_3 \) respectively are:
With reference to the carbonyl group which statement(s) is/are correct? a) Carbonyl Carbon is electrophilic b) Carbonyl Carbon is nucleophilic c) Carbonyl Oxygen is electrophilic d) Carbonyl Oxygen is nucleophilic
Identify the major product formed from the following reaction sequence:
major product formed from the following reaction sequence:
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 $?
Bond enthalpy of Ge-Ge bond is 260 kJ mol$^{-1}$. The bond enthalpies of Si-Si and Sn-Sn bonds in kJ mol$^{-1}$ are respectively.
Identify the major product of the following reaction (Zn-Hg/HCl reduction).
Zn-Hg/HCl reduction
Which of the following pair of solutions is isotonic?
(A) 18 g/L of glucose and 6 g/L of urea solution
(B) 10 g/L of glucose and 10 g/L of urea solution
(C) 0.01 M NaOH and 0.02 M glucose solution
(D) 0.01 M NaCl and 0.01 M glucose solution (NaCl undergoes complete dissociation)
The ratio of radii of second orbit of hydrogen atom to fourth orbit of He$^+$ ion is
The frequency band for uplink satellite communication in the following is
The hybridization of metals involved in the following complexes, respectively are [Mn(CN)$_6$]$^{3-}$, [CoF$_6$]$^{3-}$
The macromolecular colloids of the following are:
The formation of ammonia from its constituent elements is an exothermic reaction. \ The effect of increase in temperature on the reaction equilibrium is:

The IUPAC name of the following compound is:

The gaseous mixture used for welding of metals is
The correct statement of the following is
The no. of positively and negatively charged sols respectively in the following are TiO$_2$, blood, CdS, Cu, Ag, Clay, SiO$_2$, Fe$_2$O$_3$
Hydrolysis of nucleic acid gives nitrogenous base sugar and ________
Identify the major product from the following reaction sequence.
major product from the following reaction sequence.
Identify the correct statements from the following:
The formula of Calgon is \( \text{Na}_6(\text{PO}_3)_6 \)
(II) Exhausted permutit is regenerated by aqueous KCl solution.
(III) Calcium stearate is soluble in water.
(IV) In ice crystals, each oxygen is surrounded by four oxygen atoms.