List of top Chemistry Questions

The transition element (≈5%) present with lanthanoid metal in Misch metal is:
Which of the following crystals has the unit cell such that \( a = b \neq c \) and \( \alpha = \beta = 90^\circ, \gamma = 120^\circ \)?
Which of the following statements are true about [CoF6]3− ion?
I) The complex has octahedral geometry.
II) Coordination number of Co is 3 and oxidation state is +6.
(III) The complex is sp3d2 hybridised.
(IV) It is a high spin complex.
In the reaction between moist SO₂ and acidified permanganate solution:
Which one of the following is a cationic detergent?
Which one of the following does not represent the Arrhenius equation?
The type of linkage present between nucleotides is:
The compound Chemical figis
How many Coulombs are required to oxidise 0.1 mole of H2O to oxygen?
When a tertiary alcohol ($C_4​H_{10}​O$) reacts with 20% $H_3​PO_4$​ at 358 K, it gives a compound ($C_4​H_8​$) as the major product. The IUPAC name of this compound is:
In the analysis of III group basic radicals of salts, the purpose of adding NH₄Cl (solid) to NH₄OH is:
0.48 g of an organic compound on complete combustion produced 0.22 g of CO₂. The percentage of C in the given organic compound is:
For the reaction PCl5​→PCl3​+Cl2​, the rate and rate constant are 1.02×10−4mol L−1s−1 and 3.4×10−5s−1, respectively, at a given instant. The molar concentration of PCl5​ at that instant is:
Identify the wrong relation for real gases:
For which one of the following mixtures is composition uniform throughout?
The energy associated with the first orbit of He+ is:
In the reaction: \(\text{Aniline} \xrightarrow{\text{NaNO}_2/\text{dil. HCl}} P \xrightarrow{\text{Phenol/NaOH}} Q\)
The first chlorinated organic insecticide prepared is:
From the diagram
Reaction Fig
\( \Delta H \) for the reaction C → A is:
The synthetically produced radioactive noble gas by the collision of \(^{249}_{98}\text{Cf}\) with \(^{48}_{20}\text{Ca}\) is:
Which of the following set of polymers are used as fibre?
(i) Teflon
(ii) Starch
(iii) Terylene
(iv) Orlon
For the coagulation of positively charged hydrated ferric-oxide sol, the flocculating power of the ions is in the order:
Solubility product of CaC₂O₄ at a given temperature in pure water is 4 × 10⁻⁹ mol²/L². Solubility of CaC₂O₄ at the same temperature is:
Vapour pressure of a solution containing 18 g of glucose and 178.2 g of water at 100°C is:
(Vapour pressure of pure water at 100°C = 760 torr)
A mixture of phenol and aniline shows negative deviation from Raoult's law. This is due to the formation of: