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Metal and Its Compounds MCQ question and answer with solution | Chemistry Gk MCQs

Learn Metal and Its Compounds MCQ Questions and answers with easy and logical explanations in Chemistry Gk . Metal and Its Compounds MCQ question provides all type of technical mcq questions which is important for SSC-CGL, UPPSC, NDA, CDS and all govt examinations Page-9 section-1

Each section contains 100 MCQs on Metal and Its Compounds .
81
When iron is placed in moist air, a reddish brown layer of hydrated iron (III) oxide (Fe2O3) accumulates on its surface. This reddish brown layer is called:
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Answer & Solution
Answer: Option C
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82
Consider the following elements.
1. Cobalt
2. Phosphorus
3. Zinc
Which of the above elements are required for maintaining the healthy human body?
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Answer & Solution
Answer: Option D
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83
Which one of the following materials is very hard and very ductile?
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Answer: Option D
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84
Match List I with List II.
List-I (Mineral) List-II (Industries in which largely used)
a. Limestone 1. Cement
b. Copper 2. Electrical goods
c. Bauxite 3. Manufacture of aeroplanes
d. Manganese 4. Steel
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Answer & Solution
Answer: Option A
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85
The corrosion of . . . . . . . . is a serious problem-
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Answer & Solution
Answer: Option D
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86
When sodium sulphate solution is mixed with barium chloride solution,
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Answer: Option D
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87
Sodium is a reactive metal, which if kept open reacts with . . . . . . . . explode and catch fire.
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Answer & Solution
Answer: Option A
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88
Bronze is an alloy of . . . . . . . .
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Answer: Option B
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89
Which of the following metals gives yellow colour to flame when ignited?
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Answer: Option A
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90
Which of the following is flexible and soft?
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Answer: Option B
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