List of top Chemistry Questions

Which of the following is 'not' true about enantiomers?
Aniline on direct nitration yields
\( (CH_3)_3C - OC_2H_5 \) on reaction with HI gives
The secondary valency of Pt in \( [Pt(en)_2Cl_2]^{2+} \) is
How many Faradays are required to reduce 1 mol of \( Cr_2O_7^{2-} \) to \( Cr^{3+} \) in acidic medium?
Which of the following solutions will have the highest osmotic pressure?
Which of the following curve represents the first order reaction?
Which of the following is most basic?
Rate constant $k$ for the first order reaction is $2.54 \times 10^{-3} \text{ s}^{-1}$. Calculate the time required for three-fourth of the reactant to decompose. ($\log 4 = 0.60$)
One mole of Cl$_2$(g) was passed into 2 L of cold 2 M KOH solution. After the reaction, the concentrations of Cl$^-$, ClO$^-$ and OH$^-$ are respectively (assume volume remains constant)

Which one among the following compounds will most readily be dehydrated under acidic condition? 

The concentration of the reactant is reduced from $0.6 \text{ mol L}^{-1}$ to $0.2 \text{ mol L}^{-1}$ in 5 minutes in a first order reaction. Calculate rate constant of the reaction. ($\log 3 = 0.48$)
Why transition elements form interstitial compounds?
Why second ionization enthalpies of chromium and copper are exceptionally higher than those of their neighbouring elements?
Write the unit of (i) second order reaction and (ii) zero order reaction.
Define Effective collision.
Indicate the type of isomerism exhibited by the following complex: $[Co(en)_3]Cl_3$
Define coordination number.
Assertion (A): Aromatic primary amines can be prepared by Gabriel phthalimide synthesis. Reason (R): Aryl halides do not undergo nucleophilic substitution with phthalimide ion. Choose the correct option:
Assertion (A): Glucose gets oxidized to six carbon gluconic acid on reaction with bromine water. Reason (R): The carbonyl group is absent in the open chain structure of glucose. Choose the correct option:
Assertion (A): The molecularity of the given reaction is 2. \[ 2\text{HI} \rightarrow \text{H}_2 + \text{I}_2 \] Reason (R): Two molecules of the reactants are involved in simultaneous collision between them. Choose the correct option:
Assertion (A): Zinc, cadmium and mercury are not considered as transition elements. Reason (R): These elements have completely filled $d$ orbitals in their ground state as well as in their common oxidation states. Choose the correct option:
Proteins are polymers of $\alpha$-amino acids which are joined to each other by:
Which of the following reactions is not explained by the open chain structure of glucose?
Identify the compound produced by the reduction of ethanenitrile with lithium aluminium hydride: