QQuestion
State whether the following statements are True or False:
(a) Organic compounds having different molecular formula, but same structural formula are called isomers.
(b) A salt is a compound formed by partial or complete replacement of the hydrogen ion of an acid by a metal or electropositive ion.
✓Answer
(a) False
Explanation – Isomers are organic compounds having the same molecular formula but different structural formulae.
(b) True
Explanation – A salt is indeed formed when the hydrogen ion of an acid is partially or completely replaced by a metal or electropositive radical (such as the ammonium ion).
Related Questions
More ICSE Moderate level questions
Give reasons why: (a) Hydrochloric acid cannot form an acid salt. (b) Electronegativity increases across a period.
Differentiate between the following pairs based on the criteria given in the bracket: (a) Acetic acid and Sulphuric acid (number of replaceable hydrogen ion per molecule) (b) Electrolyte and Metallic conductor (the particles conducting electricity)
Complete and balance the following equations: (a) C2H4Br2 + KOH (alcoholic) ⟶ (b) NH3 (excess) + Cl2 ⟶ (c)
K, L and M are beakers containing three different solutions as shown below. Name the beaker which: (a) contains only ions. (b) contains only molecules. (c) has pH less than 7.
Study the reaction scheme shown below and identify the reactants A, B and C.
An unsaturated hydrocarbon having two carbon atoms was made to react with two moles of hydrogen gas in the presence of a catalyst to give a saturated hydrocarbon. Using the above information, answer the following questions: (a) The type of reaction that occurred is ............... . (addition / substitution) (b) Name a suitable catalyst which is used in the reaction. (c) Write a balanced chemical equation for the above reaction.
(a) Give the IUPAC name for the following organic compounds: (b) Draw the structural diagram for each of the following organic compounds: 1. butanal 2. pent-2-yne 3. The isomer of n-butane
Identify the following terms / compounds: (a) A compound which reacts with water to give acetylene gas. (b) The gas evolved when sodium propanoate is heated with soda lime. (c) A reddish-brown precipitate formed when ferric chloride solution reacts with an alkali. (d) A pair of electrons present in an atom which is not shared with any other atom during bond formation. (e) The relative molecular mass of a substance expressed in grams.
Given below are some chemicals. Lead nitrate, Copper, Hydrochloric acid, Lead oxide, Iron, Sodium carbonate, Copper carbonate, Chlorine Using suitable chemicals from the box given above, write balanced chemical equations for the preparation of the following salts. (Note: The chemicals may be used more than once, if needed.) (a) Lead (II) carbonate (b) Copper (II) chloride (c) Iron (II) chloride
Name the following: (a) Organic compounds with same molecular formula but different structural formula. (b) Group of organic compounds where the successive members follow a regular structural pattern, successive compounds differ by a 'CH2' group.
Differentiate between the following pairs based on the criteria given in the brackets: (a) Cane sugar and hydrated copper sulphate [using concentrated H2SO4] (b) Sulphuric acid and hydrochloric acid [type of salts formed]
Differentiate between the following pairs based on the criteria given: (a) Sulphuric acid and Nitric acid (using barium chloride solution) (b) Unsaturated and Saturated hydrocarbons (type of bond present)