Can anyone tell me important board question Answers for chemical reactions and equations.(Mary questions brainiest)
Answers
Answer:
Hope it will help you........
Explanation:
Q1 List four observations that help us to determine whether a chemical reaction has taken place.
Q2 What is observed when carbon dioxide gas is passed through lime water.
(i) For a short duration
(ii) For long duration?
Also, write the chemical equations for the reaction involved.
Q3 Write the balanced chemical equation for the following reaction and write the name of the reaction
Barium Chloride + Aluminium Sulphate
→
Barium Sulphate + Aluminium Chloride
Q4 Why do we store silver chloride in dark colored bottles? Explain in brief.
Q5 What happens when an iron nail is put inside the copper sulfate solution? Write a reaction with observation.
Q6 A white solid when dropped in water produces a hissing sound. What the solid may be? Give the chemical reaction for the above. Name the product formed.
Q7 Reaction of carbon monoxide with heated copper oxide is a reduction. Explain.(2) What do you observe when concentrated sulphuric acid is added to sugar?