The correct order of the number of unpaired electrons in the given complexes is:(A) \( [\mathrm{Fe}(\mathrm{CN})_6]^{3-} \) (B) \( [\mathrm{FeF}_6]^{3-} \)(C) \( [\mathrm{CoF}_6]^{3-} \) (D) \( [\mathrm{Cr}(\text{oxalate})_3]^{3-} \)(E) \( [\mathrm{Ni}(\mathrm{CO})_4] \)Choose the correct answer from the options given below:
In the reaction given below:The product ‘\( X \)’ is:
The correct order of metallic character is equal to:
The major product ‘\( P \)’ formed in the given reaction is:
In Carius tube, an organic compound ‘\( X \)’ is treated with sodium peroxide to form a mineral acid ‘\( Y \)’. The solution of \( \mathrm{BaCl_2} \) is added to ‘\( Y \)’ to form a precipitate ‘\( Z \)’. ‘\( Z \)’ is used for the quantitative estimation of an extra element. ‘\( X \)’ could be:
The correct order for acidity of the following hydroxyl compound is:(A) \( \mathrm{CH_3OH} \) (B) \( (\mathrm{CH_3})_3\mathrm{COH} \) (C), (D), (E) Choose the correct answer from the options given below:
Match List-I with List-II.
Choose the correct answer from the options given below:
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reasons R.Assertion A: \( 3.1500 \, \text{g} \) of hydrated oxalic acid dissolved in water to make \( 250.0 \, \text{mL} \) solution will result in \( 0.1 \, \text{M} \) oxalic acid solution.Reason R: Molar mass of hydrated oxalic acid is \( 126 \, \text{g mol}^{-1} \).In the light of the above statements, choose the correct answer from the options given below:
Number of water molecules in washing soda and soda ash respectively are:
The correct relationships between unit cell edge length '\( a \)' and radius of sphere '\( r \)' for face-centred and body–centred cubic structures respectively are:
Incorrect method of preparation for alcohols from the following is:
The delicate balance of \( \mathrm{CO_2} \) and \( \mathrm{O_2} \) is NOT disturbed by:
Buna-S can be represented as:
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.Assertion A: Physical properties of isotopes of hydrogen are different.Reason R: Mass difference between isotopes of hydrogen is very large.In the light of the above statements, choose the correct answer from the options given below:
The reaction used for preparation of soap from fat is:
Gibbs energy vs \( T \) plot for the formation of oxides is given below:For the given diagram, the correct statement is:
Ferric chloride is applied to stop bleeding because:
The decreasing order of hydride affinity for following carbocations is:Choose the correct answer from the options given below:
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.Assertion A: The energy required to form \( \mathrm{Mg^{2+}} \) from \( \mathrm{Mg} \) is much higher than that required to produce \( \mathrm{Mg^{+}} \).Reason R: \( \mathrm{Mg^{2+}} \) is small ion and carry more charge than \( \mathrm{Mg^{+}} \).In the light of the above statements, choose the correct answer from the options given below:
The electron in the \( n^{\text{th}} \) orbit of \( \mathrm{Li^{2+}} \) is excited to \( (n + 1) \) orbit using the radiation of energy \( 1.47 \times 10^{-17} \, \text{J} \) (as shown in the diagram). The value of \( n \) is _______. (Given : \( R_H = 2.18 \times 10^{-18} \, \text{J} \))
\( \mathrm{A(g)} \rightleftharpoons 2\mathrm{B(g)} + \mathrm{C(g)} \)For the given reaction, if the initial pressure is \( 450 \, \text{mm Hg} \) and the pressure at time \( t \) is \( 720 \, \text{mm Hg} \) at a constant temperature \( T \) and constant volume \( V \). The fraction of \( \mathrm{A(g)} \) decomposed under these conditions is \( x \times 10^{-1} \). The value of \( x \) is _______. (Nearest integer)
In alkaline medium, the reduction of permanganate anion involves a gain of _______ electrons.
The difference in the oxidation state of \( \mathrm{Xe} \) between the oxidized product of \( \mathrm{Xe} \) formed on complete hydrolysis of \( \mathrm{XeF_4} \) and \( \mathrm{XeF_4} \) is _______.
An aqueous solution of volume \( 300 \, \text{cm}^3 \) contains \( 0.63 \, \text{g} \) of protein. The osmotic pressure of the solution at \( 300 \, \text{K} \) is \( 1.29 \, \text{m bar} \). The molar mass of the protein is ______ \( \text{g mol}^{-1} \).[Given: \( R = 0.083 \, \text{L bar K}^{-1} \, \text{mol}^{-1} \)]
The number of incorrect statements from the following is ______.A. The successive half - lives of zero order reactions decreases with time.B. A substance appearing as reactant in the chemical equation may not affect the rate of reaction.C. Order and molecularity of a chemical reaction can be a fractional number.D. The rate constant units of zero and second order reaction are \( \text{mol L}^{-1} \text{ s}^{-1} \) and \( \text{mol}^{-1} \text{ L s}^{-1} \) respectively.
For a metal ion, the calculated magnetic moment is \( 4.90 \, \text{BM} \). This metal ion has ______ number of unpaired electrons.
The specific conductance of \( 0.0025 \, \text{M} \) acetic acid is \( 5 \times 10^{-5} \, \text{S cm}^{-1} \) at a certain temperature. The dissociation constant of acetic acid is ______ \( \times 10^{-7} \). (Nearest integer) Consider limiting molar conductivity of \( \mathrm{CH_3COOH} \) as \( 400 \, \text{S cm}^2 \, \text{mol}^{-1} \).
The number of endothermic processes from the following is ______.A. \( \mathrm{I_2(g) \rightarrow 2I(g)} \)B. \( \mathrm{HCl(g) \rightarrow H(g) + Cl(g)} \)C. \( \mathrm{H_2O(l) \rightarrow H_2O(g)} \)D. \( \mathrm{C(s) + O_2(g) \rightarrow CO_2(g)} \)E. Dissolution of ammonium chloride in water
The number of molecules from the following which contain only two lone pair of electrons is ______.\( \mathrm{H_2O}, \mathrm{N_2}, \mathrm{CO}, \mathrm{XeF_4}, \mathrm{NH_3}, \mathrm{NO}, \mathrm{CO_2}, \mathrm{F_2} \)
(D), 
(E) 
