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प्रश्न
What do you observe? When
Barium chloride is added to sodium sulphate solution
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उत्तर
A white insoluble precipitate of barium sulphate is formed.
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संबंधित प्रश्न
Complete and balance the following chemical equations:
Fe `"SO"_4` + NaOH `→`
(aq.) (aq.)
Out of sodium and sulphur which is a metal? Explain its reaction with the oxygen.
Give an example of the following chemical change.
Two solids combine to form a liquid
Give a chemical test to distinguish between the following gases.
NH3 and SO2
Give examples of exothermic reactions i.e. heat evolved in each of the following:
(a) reaction between a solid and a liquid
(b) reaction between two gases
Give two examples of exothermic reactions seen in everyday life.
Which of the following is not an “element + element → compound” type reaction?
The water we drink is a combination of hydrogen and oxygen.
Iron benches kept in lawns and gardens get____________. It is a _________ change because a new _________ is formed.
If you leave a piece of iron in the open for a few days, it acquires a film of brownish substance, called rust.
Can you change rust back into iron by some simple method?
Write the characteristics of chemical change.
