List-I | List-II |
---|---|
(A) CCl4 | (i) Insecticide |
(B) CF2Cl2 | (ii) Refrigerant |
(C) CHI3 | (iii) Antiseptic for wounds |
(D) CH2Cl2 | (iv) Propellant for aerosols |
Each compound is matched to its application based on its chemical properties and uses:
• CCl4 (Carbon tetrachloride) was historically used as an insecticide due to its toxic properties, though its use is now restricted.
• CF2Cl2 (Dichlorodifluoromethane) is widely used as a refrigerant because of its stable and non-reactive nature.
• CHI3 (Iodoform) is used as an antiseptic for wounds, known for its distinctive odor.
• CH2Cl2 (Dichloromethane) is a volatile compound commonly used as a propellant in aerosols.
List-I (Type of Crystalline Solid) | List-II (Example) |
(A) Ionic | (III) Sodium Chloride, NaCl |
(B) Covalent | (IV) Diamond, C |
(C) Molecular | (I) Methane, CH4 |
(D) Metallic | (II) Copper, Cu |
List-I | List-II |
(A) Principal Quantum Number (n) | (ii) 1, 2, 3,... |
(B) Azimuthal Quantum Number (l) | (iv) 0, 1, 2,... n - 1 |
(C) Magnetic Quantum Number (ml) | (iii) 0, ± 1, ± 2, ± 3,..., ± 1 |
(D) Spin Quantum Number (s) | (i) -1/2, +1/2 |
Choose the correct answer from the options given below:
LIST I (Type of the Matrix) | LIST II (Property) | ||
---|---|---|---|
A. | Symmetric Matrix | I. aij = aji, for values of i and j | |
B. | Hermitian Matrix | II. aij = āji, for values of i and j | |
C. | Skew-Hermitian matrix | III. aij = -āji, for values of i and j | |
D. | Skew-Symmetric matrix | IV. aij = -aji, for values of i and j |