List of top Chemistry Questions

Find which of the following compound can have mass ratio of C:H:O as 6:1:24
For a given reaction, Δ H = 35.5 kJ mol^-1 and Δ S = 83.6 J K⁻1 mol⁻1. The reaction is spontaneous at
Which of these compounds are directional?
If a 25.0 mL sample of sulfuric acid is titrated with 50.0 mL of 0.025 M sodium hydroxide to a phenolphthalein endpoint, what is the molarity of the acid?
Which of these doesn’t exist?
The number of atoms per unit cell of bcc structure is
Which of the following represents Schotten-Baumann reaction?
The number of radial nodes of 3s and 2p orbitals are respectively
Which of the following shows correct order of bond length?
Which of the following is not involved in the formation of photochemical smog?
Which of the following complex shows sp³d² hybridization?
Which of the following is not present in Portland cement?
Which of the following order is wrong?
Which of the following can form buffer solution?
The energy of an electron in second Bohr orbit of hydrogen atom is:
For the reaction CO(g) + (1)/(2)O₂(g) → CO₂(g), which one of the statements is correct at constant T and P?
Which of the following shows nitrogen with its increasing order of oxidation number?
Which of the following represents Gay Lussac’s law? I. (P)/(T) = constant II. P₁T₂ = P₂T₁ III. P₁V₁ = P₂V₂ Choose the correct option.
Raoult’s law becomes a special case of Henry’s law when
Which one of the following complexes is an outer orbital complex?
Plaster of Paris is
Stronger is oxidising agent, more is
Which of the following can be repeatedly softened on heating? (i) Polystyrene (ii) Melamine (iii) Polyesters (iv) Polyethylene (v) Neoprene
A capillary tube of radius R is immersed in water and water rises in it to a height H. Mass of water in the capillary tube is M. If the radius of the tube is doubled, mass of water that will rise in the capillary tube will now be
When a metal surface is illuminated by light of wavelength 400 nm and 250 nm, the maximum velocities of the photoelectrons ejected are v and 2v respectively. The work function of the metal is (h = Planck’s constant, c = velocity of light in air)