List of top Chemistry Questions

Products (X and Y) of the following reactions (I and II) are : I. $ \underset{\text{(Cold and dil.)}}{{2NaOH}}+ Cl_{2} \to Nacl+X+H_{2}O $ II. $ \underset{\text{(Hot and cone.)}}{{6NaOH}}+ 3Cl_{2} \to Nacl+Y+3H_{2}O $
The intermediate product $ (X) $ formed in the following reaction is $ B_{2}H_{6}+6NH_{3} \to 3X { ->[Heat] } 2B_{3}N_{3}H_{6}+12H_{2} $
Which of the following complexes is optically active?
Which of the following radioactive element is used in the treatment of cancer?
The crystal field splitting energy $ (CFSE) $ for $ [CoCl_{6}]^{4-} $ is about $ 18000 \, cm^{-1} $ What would be the $ CFSE $ value of $ [CoCl_{4}]^{2-} $ ?
The best reducing agent among the following is
Which of the following metal ions is expected to be coloured?
Which of the following is most soluble in water?
A compound $ C_{5}H_{10}O (A) $ forms a phenyl - hydrazone and gives negative Tollen's test and a positive Iodoform reaction. It also gives $ n $ -pentane on reduction. The compound $ (A) $ is
An example of non-stoichiometric hydride is
The following reactions show the $ H_{2}O_{2} $ behaviour in I and II reactions as: I. $ PbS(s) + 4 H_{2}O_{2} (aq) \to PbSO_{4}(s) + 4H_{2}O(l) $ II. $ HOC1 + H_{2}O_{2} \to H_{3}O^{+} + Cl^{-} + O_{2} $
What will be the half-cell potential of a hydrogen electrode acting as an anode and dipped in a solution of $ pH = 2 $ ?
Which of the following is correct for Lactose?
Which of the following is substitution reaction?
Which of the following is not aromatic heterocyclic?
Which of the following is the correct order for ease of dehydration-
The number of S?S bonds in SO, SO$^{2}_{3}$ SO$^{2}_{6}$ and SO$^{2}_{8}$ respectively are
Find pH of 0.1 M NaOH solution.
Favourable condition for product formation in the given reaction. $SO_{2}\left(g\right)\quad \frac{1}{2}O_{2}\left(g\right)\quad\quad SO_{3}\left(g\right);$ $\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad H=-42\,kj\,is$
[Cr(HO)]Cl (atomic number of Cr = 24) has a magnetic moment of 3.83 BM. The correct distribution of 3d-elections in the chromium present in the complex is
Element A and B have electronegativities 3 and 1.2 respectively? Nature of bond between them?
Cassiterite is ore of :
Grignard reagent can?t be prepared from
Which of the following is invert sugar?
Formula of plaster of paris is :