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The weight of iron which will be converted into its oxide(Fe₃O₄) by the action of 18 g of steam on it will be (at. wt. of Fe=56)
Options
(a) 168 g
(b) 84 g
(c) 42 g
(d) 21 g
Correct Answer:
42 g
Explanation:
3Fe + 4H₂O → Fe₃O₄ + 4H₂
3x 56 g 4x 18 g
= 168 g = 72 g
72 g steam requries Fe= 168 g
18 g steam requires Fe= 168x 18/72
= 42 g
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- Coordination number of Zn in ZnS (zinc blende) is
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Question Type: Memory
(964)
Difficulty Level: Easy
(1008)
Topics: Basic Concepts of Chemistry
(94)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Chloride ion and potassium ion are isoelectronic. Then
- Coordination number of Zn in ZnS (zinc blende) is
- The oxide,which can not act as a reducing agent, is
- A 2.5 mol sample of N₂H₄ loses 25 mol of electrons in being converted
- Which of the following has a higher rate of reaction with water
Question Type: Memory (964)
Difficulty Level: Easy (1008)
Topics: Basic Concepts of Chemistry (94)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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