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The element expected to form largest ion to achieve the nearest noble gas configuration is
Taking stability as the factor, which one of the following represents correct relationship?
Homoleptic complex from the following complexes is
Weight (g) of two moles of the organic compound, which is obtained by heating sodium ethanoate with sodium hydroxide in presence of calcium oxide is :
Consider the following reaction and identify the product (P). $CH_3-CH(OH)-CH(CH_3)-CH_3 \xrightarrow{HBr} \text{Product (P)}$
Identify product (A) in the following reaction:
For a certain reaction, the rate $= k[A]^2[B]$, when the initial concentration of A is tripled keeping concentration of B constant, the initial rate would
Match List-I with List-II : List-I (Oxoacids of Sulphur) A. Peroxodisulphuric acid B. Sulphuric acid C. Pyrosulphuric acid D. Sulphurous acid List-II (Bonds) I. Two S-OH, Four S=O, One S-O-S II. Two S-OH, One S=O III. Two S-OH, Four S=O, One S-O-O-S IV. Two S-OH, Two S=O Choose the correct answer from the options given below.
The right option for the mass of $CO_2$ produced by heating $20\text{ g}$ of $20\%$ pure limestone is (Atomic mass of $Ca = 40$) $[CaCO_3 \xrightarrow{1200\text{ K}} CaO + CO_2]$
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : In equation $\Delta_r G = -nFE_{cell}$ value of $\Delta_r G$ depends on n. Reasons R : $E_{cell}$ is an intensive property and $\Delta_r G$ is an extensive property. In the light of the above statements, choose the correct answer from the options given below
Which of the following statements are INCORRECT? A. All the transition metals except scandium form MO oxides which are ionic. B. The highest oxidation number corresponding to the group number in transition metal oxides is attained in $Sc_2O_3$ to $Mn_2O_7$. C. Basic character increases from $V_2O_3$ to $V_2O_4$ to $V_2O_5$. D. $V_2O_4$ dissolves in acids to give $VO_4^{3-}$ salts. E. $CrO$ is basic but $Cr_2O_3$ is amphoteric. Choose the correct answer from the options given below:
What fraction of one edge centred octahedral void lies in one unit cell of fcc?
Which complex compound is most stable?
Complete the following reaction: [A] $\xrightarrow{HCN}$ [B] $\xrightarrow[\Delta]{conc. H_2SO_4}$ [C]. [C] is
Consider the following compounds/species: i. Naphthalene, ii. Cyclopentadienyl anion, iii. Cyclobutadiene, iv. Cyclopropenyl cation, v. Cyclopropenyl cation (with positive charge), vi. Cyclooctatetraene, vii. Anthracene. The number of compounds/species which obey Huckel's rule is ________.
Which amongst the following options are correct graphical representation of Boyle's law?
Which amongst the following options is the correct relation between change in enthalpy and change in internal energy?
The equilibrium concentrations of the species in the reaction $A + B \rightleftharpoons C + D$ are 2, 3, 10 and 6 mol L$^{-1}$, respectively at 300 K. $\Delta G^{\circ}$ for the reaction is ($R = 2$ cal/mol K)
Pumice stone is an example of
On balancing the given redox reaction, $aCr_2O_7^{2-} (aq) + bSO_3^{2-} (aq) + cH^+ (aq) \rightarrow 2Cr^{3+} (aq) + bSO_4^{2-} (aq) + \frac{c}{2} H_2O(l)$, the coefficients a, b and c are found to be, respectively-