Chemistry
(a) Define catalyst.
(b) What are (i) positive catalysts and (ii) negative catalysts? Support your answer with one example for each of them.
(c) Name three biochemical catalysts found in the human body.
Related Questions
How will you obtain?
(a) Magnesium oxide from magnesium.
(b) Silver chloride from silver nitrate.
(c) Nitrogen dioxide from lead nitrate.
(d) Zinc chloride from zinc.
(e) Ammonia from nitrogen.
Also give balanced equations for the reactions.
(a) What is meant by metal activity series?
(b) A metal P was placed in a solution of silver nitrate. After sometime, silver was deposited on metal P and the solution turned blue.
(i) Which is more reactive - metal P or silver?
(ii) What kind of reaction is this?
(iii) Give an example of this type of reaction.
Following is a list of metals :
Na, Zn, Fe, Ag, Pb, Hg, Cu.
Answer the questions that follow :
(a) Which of the above metals can displace all the metals from their salt solution ?
(b) Name one of the above metals which cannot react with dilute acid to produce hydrogen gas.
(c) Name one of the above metals which reacts with oxygen upon heating to produce an amphoteric oxide.
(d) Arrange the above metals in a decreasing order of their reactivity.
Given below is a diagram showing a type of reaction between two compounds. Answer the questions that follow :
(a) What compound is X ?
(b) Give a balanced chemical equation to form X.
(c) Name the type of reaction shown.