Alkanes exhibit positional isomerism, also known as structural isomerism. This is because the carbon atoms in the alkane chain can be arranged in different ways, leading to different structural isomers with the same molecular formula but different connectivity of atoms. On the other hand, geometric isomerism is exhibited by compounds with restricted rotation around a double bond, which alkanes do not have. Therefore, alkanes do not exhibit geometric isomerism. **

Isomerism is a phenomenon in which two or more chemical compounds have the same molecular formula but different structural arrangements, resulting in different properties. These compounds are called isomers. Isomerism can occur in organic compounds, such as alkanes, alkenes, and alcohols, as well as in inorganic compounds. There are different types of isomerism, including structural isomerism, stereoisomerism, and geometric isomerism. **

A moth is a type of insect that is often referred to as a "night butterfly" due to its similar appearance and behavior to butterflies. Moths are known for being active at night and are attracted to light sources. They have a similar life cycle to butterflies, going through stages of egg, larva (caterpillar), pupa, and adult. Moths come in a wide variety of shapes, sizes, and colors, and can be found in diverse habitats around the world. **

E-Z isomerism is a type of stereoisomerism that occurs in compounds with restricted rotation around a double bond, where the priority groups are determined based on the atomic number of the substituents. In contrast, cis-trans isomerism is a type of geometric isomerism that occurs in compounds with a double bond, where the arrangement of substituents around the double bond determines the isomeric forms. While E-Z isomerism is based on the priority of substituents, cis-trans isomerism is based on the spatial arrangement of substituents across the double bond. **

It is likely that a moth is in the room. Moths are typically more active at night and are attracted to light sources, which may lead them into indoor spaces. Night butterflies, on the other hand, are not a commonly recognized type of insect and are not typically found indoors. Therefore, the insect in the room is more likely to be a moth. **

Isomerism is a concept in chemistry where two or more compounds have the same molecular formula but different structural arrangements, leading to different chemical and physical properties. This occurs because the atoms are arranged differently in the molecules, resulting in distinct chemical structures. Isomers can be classified into different types such as structural isomers, geometric isomers, and optical isomers based on the nature of their structural differences. Overall, isomerism is a fundamental concept in chemistry that highlights the diversity and complexity of molecules with the same chemical formula. **

Yes, isomerism is the phenomenon where two or more compounds have the same molecular formula but different structural arrangements, resulting in different chemical and physical properties. Isomers can be classified into different types such as structural isomers, geometric isomers, and optical isomers, depending on the specific differences in their structures. **

Isomerism in alkenes refers to the phenomenon where two or more compounds have the same molecular formula but different structures. This occurs due to the different arrangements of atoms in the carbon-carbon double bond. The two main types of isomerism in alkenes are geometric (cis-trans) isomerism and structural isomerism. Geometric isomers have the same connectivity of atoms but differ in the spatial arrangement around the double bond, while structural isomers have different carbon skeletons. **