Answer: A) a nonpolar molecule with polar bonds Explanation: The four bonds of carbon tetrachloride (CCl4) are polar, but the molecule is nonpolar because the bond polarity is cancelled by the symmetric tetrahedral shape. Hence, making the net dipole as zero and molecule as non-polar.   When other atoms substitute for some of the Cl atoms, the symmetry is broken and the molecule becomes polar.

Ionic bonding is a type of chemical bond in which valence electrons are lost from one atom and gained by another.. This bond generates two oppositely charged ions. In ionic bonds, the metal loses electrons to become a positively charged cation, whereas the nonmetal accepts those electrons to become a negatively charged anion.   Example :: One example of an ionic bond is the formation of sodium fluoride, NaF, from a sodium atom and a fluorine atom. In this reaction, the sodium atom loses its single valence electron to the fluorine atom, which has just enough space to accept it. The ions produced are oppositely charged and are attracted to one another due to electrostatic forces.

Answer: C)लेड (II) ऑक्साइड स्पष्टीकरण: एक रसायन का व्यवस्थित नाम, इसे इंटरनेशनल यूनियन ऑफ प्योर एप्लाइड केमिस्ट्री (IUPAC) द्वारा दिया गया अनूठा नाम है। IUPAC नाम एक रासायनिक यौगिक के सामान्य नाम से भिन्न हो सकता है। PbO एक आयनिक यौगिक है क्योंकि इसमें धातु के रूप में लेड और अधातु के रूप में ऑक्सीजन होता है। PbO का व्यवस्थित नाम लेड (II) ऑक्साइड है। यहां हमें (II) लगाने की जरूरत है क्योंकि लेड में एक से अधिक संयोजन क्षमता होती है।