List of top Chemistry Questions

The correct order of the metallic character of the elements Be, Al, Na, K is:
Gabriel phthalimide synthesis is used for the preparation of which of the following?
Identify the major product formed from the following reaction sequence:
major product formed from the following reaction sequence:
Identify the major product from the following reaction sequence:
major product from the following reaction sequence
Reactant: 1-phenylpropanol
In ruby and emerald, the metal ion(s) present is/are:
The rate for \( S_N1 \) reaction will be faster for which of the following bromides?
Assertion (A): 1-Bromopentane reacts with AgCN to give pentyl isocyanide.
Reason (R): AgCN is mainly ionic in nature.
Curdling of milk is caused due to the formation of which of the following acids by bacteria?
The shapes of \( \text{XeF}_2 \), \( \text{XeF}_4 \), and \( \text{XeO}_3 \) respectively are:
The colloidal solution used to treat stomach disorders is:
The sol formed in the following unbalanced equation is: \[ \text{As}_2\text{O}_3 + \text{H}_2\text{S} \rightarrow ? \]
The element with highest electronegativity after fluorine is:
The correct order of acidic nature of the following alkynes is:
I. \( \text{C}_2\text{H}_2 \)
II. \( (\text{CH}_3)_2\text{C}_2 \)
III. \( (\text{CH}_3)\text{C}_2\text{H} \)
The correct statements with respect to halides of group 14 elements are:
(I) Both CCl4 and SiCl4 undergo hydrolysis.
(II) GeX4 is more stable than GeX2.
(III) PbX4 is less stable than PbX2.
(IV) Stability of dihalides decreases down the group.
Metal ‘M’ in the following reaction is: \[ 2 \text{MNO}_3 \rightarrow \text{M}_2\text{O} + 2\text{NO}_2 + \frac{1}{2}\text{O}_2 \]
The reaction of diborane in diethyl ether with X gives metal borohydride. X is a:
The product ‘Q’ of the following reactions is:
product ‘Q’ of the following reactions
The anions (A) of \( \text{C}_p\text{A}_q \) molecule form an fcc lattice. Cations (C) are positioned at the body center and half of the edge centers. The formula of the molecule is:
Elements A and B have FCC and BCC structures respectively with unit cell edge length \( a = 3 \, \text{Å} \).
The number of atoms in 210 g of A = number of atoms in 594 g of B.
If density of A is \( 7 \, \text{g/cm}^3 \), what is the density of B?
Which of the following is not a disproportionation reaction?
The compound that is used in smoke screens is:
Which of the following equations are correct?
(A) U =H−PV
(B) G =H−TS
(C) U =q+W
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.
Which of the following reactions is not a disproportionation reaction?
In which of the following, the elements Al, B, Mg, and K are correctly arranged in the increasing order of their metallic character?