QQuestion
State the terms/process for the following: [5]
- The energy released when an atom in the gaseous state accepts an electron to form an anion.
- Tendency of an element to form chains of identical atoms.
- The name of the process by which Ammonia is manufactured on a large scale.
- A type of salt formed by partial replacement of hydroxyl radicals with an acid radical.
- The ratio of the mass of a certain volume of gas to the same volume of hydrogen measured under the same conditions of temperature and pressure.
Exam-ready answer • 05 Mark
✓Answer
- Electron affinity
- Catenation
- Haber’s process
- Basic salt
- Vapour density
Related Questions
More ICSE Moderate level questions
Match the Column A with Column B: [5]Column AColumn B(a) Sodium chloride1. has two shared pair of electrons(b) Methane2. has high melting and boiling points(c) Hydrogen chloride gas3. a greenhouse gas(d) Oxidation reaction4. has low melting and boiling points(e) Water5. Zn − 2e− ⟶ Zn2+6. S + 2e− ⟶ S2−
Give the structural formulas and IUPAC names as directed: [5](a) Give the structural formula of the following organic compounds:2-chlorobutaneMethanalBut-2-yne(b) Give the IUPAC name of the following organic compounds:
Complete and balance the following equations: [3] (a) NH4Cl + Ca(OH)2 → (b) CuSO4 + NH4OH → (c) Cu + Conc. HNO3 →
State a relevant reason for the following: [2](a) Hydrogen chloride gas cannot be dried over quick lime.(b) Ammonia gas is not collected over water.
The following questions are pertaining to the laboratory preparation of Ammonia gas from Magnesium nitride: [3](a) Write a balanced chemical equation for its preparation.(b) Why is this method seldom used?(c) How do you identify the gas formed?
Metals are good ............... [oxidizing agents / reducing agents] [1]
Fill in the blank with the correct choice:Higher the pH value of a solution, the more ............... [acidic / alkaline] it is. [1]
Fill in the blank with the correct choice:Conversion of ethene to ethane is an example of ............... [hydration / hydrogenation] [1]
Arrange the following as per the instruction given in the brackets: [3](a) Al, K, Mg, Ca (decreasing order of its reactivity)(b) N, Be, O, C (increasing order of non-metallic character)(c) P, Si, F, Be (decreasing order of valence electrons)
Ethane burns in oxygen according to the chemical equation:2C2H6 + 7O2 → 4CO2 + 6H2OIf 80 ml of ethane is burnt in 300 ml of oxygen, find the composition of the resultant gaseous mixture when measured at room temperature. [3]
The acid which does not form acid salt by a basic radical: [1]H2CO3H3PO4H2SO4CH3COOH
An example of a cyclic organic compound is: [1]PropenePenteneButeneBenzene
Small steps build strong concepts.