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Which of the following reactions will NOT give primary amine as the product? (1) $CH_3CONH_2 \xrightarrow{Br_2/KOH} \text{Product}$ (2) $CH_3CN \xrightarrow[\text{(ii) } H_3O^+]{\text{(i) } LiAlH_4} \text{Product}$ (3) $CH_3NC \xrightarrow[\text{(ii) } H_3O^+]{\text{(i) } LiAlH_4} \text{Product}$ (4) $CH_3CONH_2 \xrightarrow[\text{(ii) } H_3O^+]{\text{(i) } LiAlH_4} \text{Product}$
Which one is an example of heterogenous catalysis?
The conductivity of centimolar solution of KCl at $25^{\circ}\text{C}$ is $0.0210 \text{ ohm}^{-1} \text{ cm}^{-1}$ and the resistance of the cell containing the solution at $25^{\circ}\text{C}$ is $60 \text{ ohm}$. The value of cell constant is
Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : Helium is used to dilute oxygen in diving apparatus. Reason R : Helium has high solubility in $O_2$. In the light of the above statements, 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 : A reaction can have zero activation energy. Reasons R : The minimum extra amount of energy absorbed by reactant molecules so that their energy becomes equal to threshold value, is called activation energy. In the light of the above statements, choose the correct answer from the options given below :
In Lassaigne's extract of an organic compound, both nitrogen and sulphur are present, which gives blood red colour with $Fe^{3+}$ due to the formation of
The given compound [Diagram of a benzene ring attached to a CH2-CH=CH-CH2-CH3 chain] is an example of ________.
Identify the product in the following reaction: $C_6H_5N_2Cl \xrightarrow[(ii) Mg/dry ether]{(i) Cu_2Br_2/HBr} \xrightarrow[(iii) H_2O]{} Product$
Amongst the following the total number of species NOT having eight electrons around central atom in its outermost shell, is $\text{NH}_3, \text{AlCl}_3, \text{BeCl}_2, \text{CCl}_4, \text{PCl}_5$ :
Which amongst the following molecules on polymerization produces neoprene?
The relation between $n_m$, ($n_m$ = the number of permissible values of magnetic quantum number ($m$)) for a given value of azimuthal quantum number ($l$), is
Some tranquilizers are listed below. Which one from the following belongs to barbiturates?
Which of the following statements are NOT correct? A. Hydrogen is used to reduce heavy metal oxides to metals. B. Heavy water is used to study reaction mechanism. C. Hydrogen is used to make saturated fats from oils. D. The H-H bond dissociation enthalpy is lowest as compared to a single bond between two atoms of any elements. E. Hydrogen reduces oxides of metals that are more active than iron. Choose the most appropriate answer from the options given below:
Intermolecular forces are forces of attraction and repulsion between interacting particles that will include : A. dipole - dipole forces B. dipole - induced dipole forces C. hydrogen bonding D. covalent bonding E. dispersion forces Choose the most appropriate answer from the options given below :
The correct order of energies of molecular orbitals of $\text{N}_2$ molecule, is
A compound is formed by two elements A and B. The element B forms cubic close packed structure and atoms of A occupy 1/3 of tetrahedral voids. If the formula of the compound is $A_xB_y$, then the value of $x + y$ is in option
The number of $\sigma$ bonds, $\pi$ bonds and lone pair of electrons in pyridine, respectively are:
The stability of $Cu^{2+}$ is more than $Cu^+$ salts in aqueous solution due to
Select the correct statements from the following: A. Atoms of all elements are composed of two fundamental particles. B. The mass of the electron is $9.10939 \times 10^{-31} \text{ kg}$. C. All the isotopes of a given element show same chemical properties. D. Protons and electrons are collectively known as nucleons. E. Dalton's atomic theory, regarded the atom as an ultimate particles of matter. Choose the correct answer from the options given below:
Amongst the given options which of the following molecules/ ion acts as a Lewis acid?