Question

Read the following and answer any four questions from 18.1 to 18.5.
Megha got a magnesium ribbon
from the science laboratory.
She burnt it took the white
ash and mixed it in water. Then she tested the solution with litmus paper. Red litmus
turns to blue,
she assumed that the ash'is basic in nature.
18.1The chemical reaction that took place in the experiment is
(a) 2Mg + 20
2Mgo
(b) Mg + 0 Mgo
(C) 2Mg + 2 02
2Mgo
(d) 2Mg + O2
2Mgo
18.2The white Ash referred in the experiment is
(a) Carbon-di-oxide
(b) Magnesium oxide
(c) Magnesium carbonate
(d) Magnesium di-oxide

18.3Which of the following nature gets, when an ash reacts with water.
(a) Basic
(b) Acidic
(C) Neutral
(d) None of these

18.4Which chemical property of metals is verified here
(a) Metals react with oxygen to form to metallic oxides.
(b) Metallic oxides are basic in nature.
(c) Both a & bare correct.
(d) None of the above.
18.5Which of the following product is formed, when magnesium oxide react with water.
(a) Magnesium hydroxide
(b) Magnesium oxide
(c) Manganese
(d) None​

Answer 1

Explanation:

18.1) : (d)

18.2) : (b)

18.3) : (a)

18.4) : (c)

18.5) : (a)

Answer 2

Answer:

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