| List-I | List-II |
|---|---|
| (A) CCl4 | (i) Insecticide |
| (B) CF2Cl2 | (ii) Refrigerant |
| (C) CHI3 | (iii) Antiseptic for wounds |
| (D) CH2Cl2 | (iv) Propellant for aerosols |
Compound applications are determined by their chemical properties and uses:
• CCl4 (Carbon tetrachloride), once an insecticide due to its toxicity, now has restricted usage.
• CF2Cl2 (Dichlorodifluoromethane) is widely utilized as a refrigerant due to its stable and non-reactive characteristics.
• CHI3 (Iodoform) acts as an antiseptic for wounds, notably possessing a distinctive odor.
• CH2Cl2 (Dichloromethane), a volatile compound, frequently serves as an aerosol propellant.
Which of the following statements are true?
A. Unlike Ga that has a very high melting point, Cs has a very low melting point.
B. On Pauling scale, the electronegativity values of N and C are not the same.
C. $Ar, K^{+}, Cl^{–}, Ca^{2+} and S^{2–}$ are all isoelectronic species.
D. The correct order of the first ionization enthalpies of Na, Mg, Al, and Si is Si $>$ Al $>$ Mg $>$ Na.
E. The atomic radius of Cs is greater than that of Li and Rb.
Choose the correct answer from the options given below: