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Write a balanced chemical equation for each of the following reactions :
Action of dilute sulphuric acid on zinc sulphide.
Concept: undefined >> undefined
Write a balanced chemical equation for each of the following reactions :
Ammonium hydroxide is added to ferrous sulphate solution.
Concept: undefined >> undefined
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State one observation for the following:
Concentrated nitric acid is reacted with sulphur.
Concept: undefined >> undefined
State one observation for each of the following :
Lead nitric is heated strongly in a test tube.
Concept: undefined >> undefined
The pH values of three solutions A, B and C are given in the table. Answer the folloiwng questions:
| Solution | pH value |
| A | 12 |
| B | 2 |
| C | 7 |
Which solution will have no effect on litmus solution?
Concept: undefined >> undefined
The pH values of three solutions A, B and C are given in the table. Answer the folloiwng questions:
| Solution | pH value |
| A | 12 |
| B | 2 |
| C | 7 |
Which solution will liberate CO2 when reacted with sodium carbonate?
Concept: undefined >> undefined
Name the particles present in :
Strong electrolyte
Concept: undefined >> undefined
Distinguish between the following pairs of compounds using the reagent given in the bracket.
Mangenese dioxide and copper (II) oxide. (using concentrated HCl)
Concept: undefined >> undefined
Distinguish between the following pairs of compounds using the reagent given in the bracket.
Ferrous sulphate solution and ferric sulphate solution. (Using sodium hydroxide solution)
Concept: undefined >> undefined
Distinguish between the following pairs of compounds using the reagent given in the bracket.
Dilute hydrochloric acid and dilute sulphuric acid. (Using lead nitrate solution)
Concept: undefined >> undefined
Complete the following equations :
S + conc.HNO3 →
Concept: undefined >> undefined
Complete the following equations :
C + cons. H2SO4
Concept: undefined >> undefined
Complete the following equations :
3 Cu + dil. HNO3
Concept: undefined >> undefined
Match the alloys given in column I to the uses given in column II :
| Column I | Column II |
| (i) Duralumin | A. Electrical fuse |
| (ii) Solder | B. Surgical instruments |
| (iii) Brass | C. Aircraft body |
| (iv) Stainless Steel | D. Decorative articles |
Concept: undefined >> undefined
State differences between the properties of ionic compounds and covalent compounds.
Concept: undefined >> undefined
In term of electron transfer, define Oxidation
Concept: undefined >> undefined
In term of electron transfer, define
Reduction
Concept: undefined >> undefined
Explain the following briefly:
Helium does not form He2 molecule
Concept: undefined >> undefined
What type of bond is formed between two atoms, when the electronegative difference between them is High ?
Concept: undefined >> undefined
What type of bond is formed between two atoms, when the electronegative difference between them is low ?
Concept: undefined >> undefined
