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Addition reactions typically occur in unsaturated hydrocarbons, which contain at least one double or triple bond between carbon atoms. As an alkene, butene contains a carbon-to-carbon double bond (C=C). This double bond can break (specifically the pi bond), allowing new atoms or groups of atoms to attach to the carbon atoms, resulting in a single saturated product. Common examples include hydrogenation (adding H\(_2\)) and halogenation (adding Cl\(_2\) or Br\(_2\))

Given: Volume, V = 200 cm\(^3\) Concentration, C = 5.6 g/dm\(^3\) Molar mass of KOH, M = 56 g/mol Number of moles, n = \(\frac{CV}{1000}\) But because mass concentration was given in g/dm\(^3\) instead of molar concentration (mol/dm\(^3\)) to enable us calculate the number of moles, we'll have to convert concentration from mass to molar using the relationship below: Molar concentration (mol/dm\(^3\)) = \(\frac{mass concentration}{Molar Mass}\) = \(\frac{5.6}{56}\) = 0.1 mol/dm\(^3\) Now, we can find the number of moles using, Number of moles, n = \(\frac{0.1 X 200}{1000}\) = 0.02 mole The correct answer is option C

Water is the only covalent hydride in the list that is a liquid at room temperature due to intermolecular hydrogen bonding. Oxygen is highly electronegative and small in size, allowing it to form strong hydrogen bonds between molecules. These forces are much stronger than the simple van der Waals or dipole-dipole interactions found in the other hydrides, resulting in a higher boiling point that keeps water in the liquid state at standard room conditions.

In the electrolysis of dilute hydrochloric acid (HCl), two anions are present at the anode: chloride ions(Cl\(^-\)) and hydroxide ions (OH\(^-\)) from water. According to the electrochemical series, hydroxide ions are more easily discharged than chloride ions when the solution is dilute. Therefore, the (OH\(^-\)) ions undergo oxidation to produce oxygen gas (O\(_2\)) and water.

The ions F\(^−\),Na\(^+\), Mg\(^{2+}\), Al\(^{3+}\) are isoelectronic species, meaning they all have the same number of electrons (10 electrons). For isoelectronic ions, the ionic size is determined by the nuclear charge (number of protons). As the number of protons increases, the attraction between the nucleus and the electrons becomes stronger, pulling the electrons closer and decreasing the ionic radius. Order of Protons: F\(^−\) = 9 protons (Lowest charge → Largest size Na\(^+\)= 11 protons Mg\(^{2+}\)=12 protons Al\(^{3+}\)= 13 protons (Highest charge → Smallest size) Therefore, the decreasing order of ionic size is F\(^−\), Na\(^+\), Mg\(^{2+}\), Al\(^{3+}\)

The cigarette filter reduces nicotine levels through adsorption, a surface phenomenon where nicotine molecules (the solute) from the smoke (mobile phase) adhere to the surface of the filter material (stationary phase).

Solubility in this context refers to the molar concentration of the saturated solution. Given: Volume of Solution = 25 cm\(^3\) Number of moles of solute, n = 0.02 mole Solubility = ? Solubility = \(\frac{n X 1000}{Volume of solvent}\) = \(\frac{0.02 X 1000}{25}\) = 0.8 moldm\(^{-3}\)

Biotechnology is defined as the use of living organisms or their components to create products or services. Soap is traditionally made through a purely chemical process called saponification, which involves reacting fats or oils with a strong base (like sodium hydroxide). This process does not typically require the use of living cells or biological systems.

Given: mass of water = 18 ; but there are 10 moles of H\(_2\)O = 10 x 18 = 180 mass of Na\(_2\)CO\(_3\).10H\(_2\)O= 286 .: Percentage by mass of water = \(\frac{mass of water}{mass of Na{_2}CO{_3}.10H{_2}O}\) x 100 = \(\frac{180}{286}\) X 100 = 62.9%

The chemical reaction illustrated in the question above is an esterification reaction. Esterification reaction is the reaction between an alkanol (alcohol) and an alkanoic acid (carboxylic acid) in the presence of an acid catalyst forms an ester (alkanoate) and water. To produce alkanoates (esters) from alkanols and alkanoic acids, you need to perform esterification, which requires a concentrated acid catalyst (like H\(_2\)SO\(_4\)) and heat.

KNO\(_3\) (Potassium Nitrate) is primarily an ionic compound. It consists of a metal cation (K\(^+\)) and a polyatomic non-metal anion (NO\(_3\)). While covalent bonds exist within the nitrate ion itself (NO\(_3\)\(^-\)), the overall structure is held together by ionic bonds.

Double decomposition (also known as a precipitation reaction) is the standard laboratory method for preparing insoluble salts. In this process, two soluble salts are mixed in aqueous solution; their ions exchange partners to form one soluble product and one insoluble solid (precipitate). Silver chloride (AgCl) is a highly insoluble salt. It is typically prepared by reacting two soluble solutions, such as silver nitrate (AgNO\(_3\)) and sodium chloride (NaCl). AgNO\(_3\) + NaCl → AgCl + NaNO\(_3\)

The longest carbon chain containing the principal functional group (the hydroxyl group, -OH) has three carbon atoms, giving the parent name propanol. The chain is numbered starting from the end closest to the principal functional group (-OH) to give it the lowest possible locant. Therefore, the carbon attached to the -OH group is C1. With the -OH group at position 1, the chlorine atom (-Cl) is attached to the second carbon atom (C2). Combining the substituent (2-chloro) with the parent chain (propan-1-ol) results in 2-chloropropan-1-ol.

The atomic number of Neon (Z) is 10. In a neutral atom, the number of electrons is equal to the atomic number. Therefore, Neon has 10 electrons. Isoelectronic species are atoms or ions that have the same number of electrons. To find the correct match, calculate the number of electrons for each given ion: K\(^+\) = A +1 charge means it has lost 1 electron. Electrons = 19 - 1 = 18 electrons Mg\(^{2+}\) = A +2 charge means it has lost 2 electrons. Electrons = 12 - 2 = 10 electrons Ca\(^{2+}\) = A +2 charge means it has lost 2 electrons. Electrons = 20 - 2 = 18 electrons Li\(^+\) = A +1 charge means it has lost 1 electron. Electrons = 3 - 1 = 2 electrons Neon has 10 electrons. Among the choices, only Mg\(^{2+}\) has 10 electrons. Hence, they are isoelectronic.

A reducing agent is a species that donates electrons to another substance and is itself oxidized in the process. The strength of a reducing agent among halogens is determined by how easily it loses an electron, which depends on its atomic size (as you move down Group VII (from fluorine to iodine), the atomic radius increases), electronegativity( Iodine has the lowest electronegativity among the common halogens (F, Cl, Br, I), meaning it has the weakest pull on its outer electrons) and ionization energy( because the outer electrons in iodine are furthest from the nucleus and more shielded, it has the lowest ionization energy in this group, making it the most willing to donate an electron).