List of top Chemistry Questions

In the chemical reaction A $\rightarrow$ B, what is the order of the reaction? Given that, the rate of reaction doubles if the concentration of A is increased four times.
Calculate the activation energy of a reaction, whose rate constant doubles on raising the temperature from 300 K to 600 K.
In the reaction, A \( \rightarrow \) products, if the concentration of the reactant is doubled but the rate of reaction remains unchanged, what is the order of the reaction with respect to A?
In a first-order reaction, the concentration of the reactant decreases from 0.8 M to 0.4 M in 15 minutes. The time taken for the concentration to change from 0.1 M to 0.025 M is:
The chemical composition of 'slag' formed during the smelting process in the extraction of copper is:
Calamine, malachite, magnetite, and cryolite, respectively, are:
In which of the following molecules, all bond lengths are not equal?
The sol formed in the following unbalanced equation is:
\[ As_2O_3 + H_2S \rightarrow {?} \]
Which of the following has least tendency to liberate H$_2$ from mineral acids?
The correct statement among the following is:
The type of isomerism present in nitropentammine chromium (III) chloride is:
Identify, from the following, the diamagnetic, tetrahedral complex:
Ferrocene is:
The metal that shows highest and maximum number of oxidation states is:

Hybridisation and geometry of [Ni(CN)$_4$]$^{2-}$ are
 

Match List I with List II. 
 

Which of the following is the correct order of ligand field strength?
The complex with the highest magnitude of crystal field splitting energy (\(\Delta_0\)) is:
IUPAC name of \( [Pt(NH_3)_2Cl(NH_2CH_3)]Cl \) is:
Which of the following complexes will exhibit maximum attraction to an applied magnetic field?
In the Victor-Meyer test, the color given by 1°, 2°, and 3° alcohols are respectively:
What is X in the following reaction?
$CO + 2H_2 \xrightarrow{X} CH_3OH$
An unknown alcohol is treated with "Lucas reagent" to determine whether the alcohol is primary, secondary, or tertiary. Which alcohol reacts fastest and by what mechanism?
Which of the following compounds will undergo self aldol condensation in the presence of cold dilute alkali?
An alkene X on ozonolysis gives a mixture of Propan-2-one and methanal. What is X?