Chemistry
Match column A with column B
| Column A | Colum B |
|---|---|
| (a) Blue salt changes to white and then black | (i) Ammonium dichromate |
| (b) Orange coloured compound changes to green | (ii) Iodine |
| (c) Red compound changes to brown and then yellow | (iii) Zinc Nitrate |
| (d) White to yellow when hot and white when cold | (iv) Copper Sulphate |
| (e) Violet solid changes to violet vapours | (v) Red Lead |
Practical Chemistry
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Answer
| Column A | Colum B |
|---|---|
| (a) Blue salt changes to white and then black | (iv) Copper Sulphate |
| (b) Orange coloured compound changes to green | (i) Ammonium dichromate |
| (c) Red compound changes to brown and then yellow | (v) Red Lead |
| (d) White to yellow when hot and white when cold | (iii) Zinc Nitrate |
| (e) Violet solid changes to violet vapours | (ii) Iodine |
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Related Questions
Assertion (A): Sodium chloride and potassium chloride can be distinguished by flame test.
Reason (R): Sodium salt produces a red flame and potassium salt produces a lilac flame.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Match the gases in column I to the identification of the gases mentioned in column II
Column I Column II (a) Hydrogen sulphide A. Turns acidified potassium dichromate solution green (b) Nitric oxide B. Turns lime water milky (c) Carbon dioxide C. Turns reddish brown when it reacts with oxygen (d) Sulphur dioxide D. Turns moist lead acetate paper silvery black Identify the following substances:
(a) An alkaline gas A which gives dense white fumes with hydrogen chloride.
(b) Gas B that has an offensive smell as of rotten eggs.
(c) Gas C that is colourless and can be use as a bleaching agent.
(d) A brown gas D with irritating smell.
Name the gases which :
(a) extinguishes burning wooden splinter.
(b) turns moist red litmus blue.
(c) do no effect on moist litmus.
(d) affect the acidified K2Cr2O7 paper and also turns lime water dirty milky.