Write balanced chemical equations to show : The oxidizing action of conc. Sulphuric acid on carbon
Concept: Chemical Properties of Sulphuric Acid
The tendency of an atom to attract electrons itself when combined in a covalent compound.
Concept: Periodic Properties > Periodic Properties: Electronegativity
The covalent bond in which the electrons are shared equally between the combining atoms.
Concept: The Covalent Bond
State your observations when Barium chloride solution is mixed with Sodium Sulphate Solution.
Concept: Action of Alkalis on Metal Oxides
Name the following:
An ore of zinc containing its sulphide.
Concept: Types of Separation or Concentration of an Ore
State the main components of the following alloys:
Brass
Concept: Types of Separation or Concentration of an Ore
State the main components of the following alloys:
Duralumin
Concept: Types of Separation or Concentration of an Ore
Write a balanced chemical equation for the action of heat on aluminium hydroxide.
Concept: Types of Elements: Non-metal
State your observations when Dilute Hydrochloric acid is added to Lead nitrate solution and the mixture is heated.
Concept: General Preparation of Hydrogen Chloride Gas
Give a balanced chemical equation for Laboratory preparation of Nitric acid.
Concept: Laboratory Preparation of Nitric Acid
Fill in the blanks using the appropriate words given below :
(Sulphur dioxide, nitrogen dioxide, Nitric oxide, Sulphuric acid)
Cold, dilute nitric acid reacts with copper to give ___________.
Concept: Manufacture of Nitric Acid
Complete the following equations :
S + conc.HNO3 →
Concept: Sulphuric Acid
Give a balanced chemical equation for Preparation of ethane from Sodium propionate
Concept: Ethanol
Give the structural formulae of Ethanoic acid.
Concept: Isomers
Choose the correct answer from the options given below:
A hydrocarbon which is a greenhouse gas is ______.
Concept: Hydrocarbons: Alkanes
The energy required to remove an electron from a neutral isolated gaseous atom and convert it into a positively charged gaseous ion is called ____________. (electron affinity, ionization potential,
electronegativity)
Concept: Periodic Properties > Periodic Properties: Ionisation Potential (Ionisation Energy)
Calculate the number of gram atoms in 4.6 grams of sodium (Na = 23)
Concept: Periodic Properties
Match the atomic number 2, 4, 8, 15 and 19 with each of the following
1) A solid non metal belonging to the third period.
2) A metal of valency 1.
3) A gaseous element with valency 2.
4) An element belonging to Group 2
5) A rare gas.
Concept: Periodic Properties
Arrange the following as per the instruction given in the brackets:
He, Ar, Ne (Increasing order of the number of electron shells)
Concept: Periodic Properties > Periodic Properties: Electron Affinity
Arrange the following as per the instruction given in the brackets:
Na, Li, K (Increasing Ionisation Energy)
Concept: Periodic Properties > Periodic Properties: Ionisation Potential (Ionisation Energy)
