List of top Chemistry Questions

Among the following which is not the $\pi$-bonded organometallic compound
Vitamin $B_{12}$ contains
If the rate of a reaction is equal to the rate constant, the order of the reaction is
For which one of the following equations is ∆Hºreact equal to ∆Hºf for the product:
The reaction quotient (Q) for the reaction \(N_2(g) + 3H_2(g)⇋2NH_3(g)\) is given by \(Q =\frac { [NH_3]^2}{[N_2][H_2]^3}\). The reaction will proceed from right to left if: (where KC is the equilibrium constant)
The oxidation states of sulphur in the anions $SO _{3}{ }^{2-}, S _{2} O _{4}{ }^{2-}$ and $S _{2} O _{6}{ }^{2-}$ follow the order -
The solubility product of AgI at 25ºC is 1.0×10–16 mol2L–2. The solubility of AgI in 10–4N solution of KI at 25ºC is approximately (in mol L–1):
In the reaction $2 A+B \rightarrow A_{2} B$, if the concentration of $A$ is doubled and that of $B$ is halved, then the rate of reaction will
Which of the following is not an amino acid?
The Arrhenius equation expressing the effect of temperature on the rate constant of a reaction is
For which of the following reactions, $K_{p}=K_{c} ?$
Ostwald dilution law is applicable to
If the half-time for a particular reaction is found to be constant and independent of the initial concentration of the reactants, then the reaction is of
Which of the following is a non-colligative property?
How will increase of pressure affect the equation? $C(s)+H_{2} O(g) C O(g)+H_{2}(g)$
Normality of $2 MH _{2} SO _{4}$ is
Which one of the following compounds forms a red coloured solution on treatment with neutral $ \text{FeC}{{\text{l}}_{\text{3}}} $ solution ?
In acidic medium, dichromate ion oxidises ferrous ion to ferric ion. If the gram molecular weight of potassium dichromate is 294 g, its gram equivalent weight is ...... g.
Temperature coefficient of a reaction is 2. When temperature is increased from 30$^\circ$C to 100$^\circ$C, rate of the reaction increases by
The concentration of electrolyte required to coagulate a given amount of $As_2S_3$ sol. is minimum in the case of :
Which one of the following reagents will reduce diethyl ether to ethane and ethanol?
An alkaline solution of...... and citrate ions is called:
The value of Planck's constant is $ 6.63 \times 10^{-34} \,Js.$ The velocity of light is $3.0 \times 10^8\, ms^{-1}$. Which value is closest to the wavelength in nanometers of a quantum of light with frequency of $8 \times 10^{15}\, s^{-1}$?

The value of Planck's constant is 6.63×10–34Js. The velocity of light is 3.0×108 ms–1. Which value is closest to the wavelength in nanometers of a quantum of light with a frequency of 8×1015 s–1:

According to IUPAC nomenclature sodium nitroprusside is named as