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State your observations when Barium chloride solution is mixed with Sodium Sulphate Solution.
Concept: Action of Alkalis on Metal Oxides
| Abhishek was given a salt ‘X’ which was white in colour for analysis. On strong heating, it produced a yellow residue, a colourless gas and also a reddish-brown gas. The solution of the salt ‘X’, when tested with an excess of ammonium hydroxide, produced a chalky white insoluble precipitate. |
- Name the coloured gas that evolved when Abhishek heated the salt strongly.
- Which cation was present in the sample given to Abhishek?
- Identify the salt given to Abhishek for analysis.
Concept: Colours of the Salts and Their Solutions
A student was asked to perform an experiment in the laboratory based on the instructions given:
Observe the picture given below and state one observation for the experiment you would notice on mixing the given solution.
Concept: Action of Sodium Hydroxide Solution on Certain Metallic Salt Solutions
A student was asked to perform an experiment in the laboratory based on the instructions given:
Observe the picture given below and state one observation for the experiment you would notice on mixing the given solution.
Concept: Action of Sodium Hydroxide Solution on Certain Metallic Salt Solutions
Give one word or phrase for the following:
The ratio of the mass of a certain volume of gas to the mass of an equal volume of hydrogen under the same conditions of temperature and pressure.
Concept: Vapour Density and Its Relation to Relative Molecular Mass
Name the main constituent metal in the following alloys:
Duralumin
Concept: Methods of Making Alloys
Name the alloys for the given composition:
Magnesium + Manganese + Aluminium + Copper
Concept: Alloy
Identify the following:
A homogenous mixture of two or more metals or a metal and a non-metal in a definite proportion in their molten state.
Concept: Alloy
State your observation when dilute hydrochloric acid is added to a lead nitrate solution and the mixture is heated.
Concept: General Preparation of Hydrogen Chloride Gas
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
Identify the reactant and write the balanced equation for the following:
Nitric acid reacts with compound Q to give a salt Ca(NO3)2, water and carbon dioxide.
Concept: Chemical Properties of Nitric Acid
Give a balanced equation for the following:
Oxidation of carbon with conc. nitric acid.
Concept: Concept of Nitric Acid
Complete the following equations :
S + conc.HNO3 →
Concept: Concept of Sulphuric Acid
Give the structural formula of the following organic compound:
Methanal
Concept: Organic Compounds
Write the chemical equation for the following:
Combustion of methane
Concept: Ethanoic Acid
Explain any two stages of marketing.
Concept: Stages of Marketing
Distinguish between Advertising and Sales promotion.
Concept: Promotion Mix >> Sales Promotion
Explain the need for GAAP for accounting.
Concept: Generally Accepted Accounting Principles (GAAP)
Define the term GAAP.
Concept: Generally Accepted Accounting Principles (GAAP)
Give any two uses of Income and Expenditure Account.
Concept: Income and Expenditure Account
