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The incorrect statement among the following is:
The most reactive compound among the following for electrophilic aromatic substitution is:
What is the correct order of boiling points for the following compounds, arranged from the highest to the lowest? (a) Heptane (b) Butane (c) 2-Methylbutane (d) 2-Methylpropane (e) Hexane
Which one is not equal to zero for an ideal solution?
The freezing point depression constant ($K_f$) of benzene is $5.12 \text{ K kg mol}^{-1}$. The freezing point depression for the solution of molality $0.078 \text{ m}$ containing a non-electrolyte solute in benzene is:
The products that formed when the following compound is treated with $\text{Br}_2$ in the presence of $\text{FeBr}_3$ are:
The molarity of a $0.2 \text{ N } Na_2CO_3$ solution will be:
Of the following $0.10 \text{ m}$ aqueous solutions, which one will exhibit the largest freezing point depression?
The isobutyl group among the following is:
An aqueous solution is $1.00$ molal in $\text{KI}$. Which change will cause the vapour pressure of the solution to increase?
The correct option for the value of vapour pressure of a solution at 45 °C with benzene to octane in a molar ratio 3:2 is: [At 45 °C vapour pressure of benzene is 280 mm Hg and that of octane is 420 mm Hg. Assume Ideal gas]
When neutral or faintly alkaline $KMnO_4$ is treated with potassium iodide, iodide ion is converted into 'X'. 'X' is:
Vapour pressure of chloroform ($CHCl_3$) and dichloromethane ($CH_2Cl_2$) at 25°C are 200 mm Hg and 41.5 mm Hg respectively. Vapour pressure of the solution was obtained by mixing 25.5 g of $CHCl_3$ and 40 g of $CH_2Cl_2$ at the same temperature will be: (Molecular mass of $CHCl_3$ = 119.5 u and molecular mass of $CH_2Cl_2$ = 85 u)
Identify the incorrect statement among the following:
Acidified $K_2Cr_2O_7$ solution turns green when $Na_2SO_3$ is added to it. This is due to the formation of:
Which of the following ions will exhibit colour in aqueous solutions?
Which of the following ions displays the d-d transition and paramagnetism?
Assertion (A): Ionization enthalpy increases along each series of transition elements from left to right. However, small variations occur. Reason (R): There is a corresponding increase in nuclear charge which accompanies the filling of electrons in the inner $d$-orbitals.
Which of the following series of transitions in the spectrum of hydrogen atom fall in visible region?
Match the reagents (List-I) with the products (List-II) obtained from phenol and select the correct option. **List-I (Reagents)** (A) (i) NaOH, (ii) CO₂, (iii) H⁺ (B) (i) Aqueous NaOH + CHCl₃, (ii) H⁺ (C) Zn dust, Δ (D) Na₂Cr₂O₇, H₂SO₄ **List-II (Products)** (I) Benzoquinone (II) Benzene (III) Salicylaldehyde (IV) Salicylic acid