List of top Chemistry Questions

Match List - I with List - II : List - I (Process)
(a) Deacon's process
(b) Contact process
(c) Cracking of hydrocarbons
(d) Hydrogenation of vegetable oils List - II (Catalyst)
(i) ZSM-5
(ii) CuCl₂
(iii) Particles 'Ni'
(iv) V₂O₅

Which one of the following compounds will liberate \(CO_2\) when treated with \(NaHCO_3\)?

Consider the complete combustion of butane, the amount of butane utilized to produce 72.0 g of water is ________ \(\times 10^{-1}\) g. (in nearest integer)

When 10 mL of an aqueous solution of \(Fe^{2+}\) ions was titrated in the presence of dil \(H_2SO_4\) using diphenylamine indicator, 15 mL of 0.02 M solution of \(K_2Cr_2O_7\) was required to get the end point. The molarity of the solution containing \(Fe^{2+}\) ions is \(x \times 10^{-2}\) M. The value of \(x\) is ________. (Nearest integer)

A home owner uses \(4.00 \times 10^3 \text{ m}^3\) of methane (\(CH_4\)) gas, (assume \(CH_4\) is an ideal gas) in a year to heat his home. Under the pressure of 1.0 atm and 300 K, mass of gas used is \(x \times 10^5\) g. The value of \(x\) is ________. (Nearest integer) (Given R = 0.083 L atm \(K^{-1} mol^{-1}\))

A source of monochromatic radiation of wavelength 400 nm provides 1000 J of energy in 10 seconds. When this radiation falls on the surface of sodium, \(x \times 10^{20}\) electrons are ejected per second. Assume that wavelength 400 nm is sufficient for ejection of electron from the surface of sodium metal. The value of \(x\) is ________. (Nearest integer) (\(h = 6.626 \times 10^{-34} \text{ Js}\))

For the reaction \(A + B \rightleftharpoons 2C\) the value of equilibrium constant is 100 at 298 K. If the initial concentration of all the three species is 1 M each, then the equilibrium concentration of C is \(x \times 10^{-1}\) M. The value of \(x\) is ________. (Nearest integer)

The water soluble protein is :

An Organic compound 'A' \(C_4H_8\) on treatment with \(KMnO_4/H^+\) yields compound 'B' \(C_3H_6O\). Compound 'A' also yields compound 'B' an ozonolysis. Compound 'A' is:

Which one of the following chemical agent is not being used for dry-cleaning of clothes ?

Which one of the following compounds of Group-14 elements is not known ?

At 298.2 K the relationship between enthalpy of bond dissociation (in kJ mol$^{-1}$) for hydrogen ($E_H$) and its isotope, deuterium ($E_D$), is best described by :

In the leaching of alumina from bauxite, the ore expected to leach out in the process by reacting with NaOH is :

The ionic radii of $K^+$, $Na^+$, $Al^{3+}$ and $Mg^{2+}$ are in the order :

Given below are two statements :
Statement I : None of the alkaline earth metal hydroxides dissolve in alkali.
Statement II : Solubility of alkaline earth metal hydroxides in water increases down the group.
In the light of the above statements, choose the most appropriate answer from the options given below :

The correct order of following 3d metal oxides, according to their oxidation numbers is :
(a) $CrO_3$
(b) $Fe_2O_3$
(c) $MnO_2$
(d) $V_2O_5$
(e) $Cu_2O$

Sodium stearate $CH_3(CH_2)_{16}COO^- Na^+$ is an anionic surfactant which forms micelles in water. Choose the correct statement for it from the following :

If \( \text{C}(s) + \text{O}_2(g) \rightleftharpoons \text{CO}_2(g) \), \( \Delta H = R \) and \[ \text{CO}(g) + \frac{1}{2} \text{O}_2(g) \rightleftharpoons \text{CO}_2(g), \quad \Delta H = S \] then heat of formation of CO is:

Which of the following compounds does not follow Markovnikov's law?

The value of \( \log_{10} K \) for a reaction \( A \rightleftharpoons B \) is (Given: \( \Delta H^\circ_{298K} = -54.07 \, \text{kJ mol}^{-1} \), \( \Delta S^\circ_{298K} = 10 \, \text{JK}^{-1} \, \text{mol}^{-1} \) and \( R = 8.314 \, \text{JK}^{-1} \, \text{mol}^{-1} \)) \[ 2.303 \times 8.314 \times 298 = 5705 \]