AP EAMCET Chemistry MCQs: Practice Questions for Engineering & Agriculture Streams

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AP EAMCET (EAPCET) Chemistry Multiple Choice Questions (MCQs)

MCQs for AP EAMCET Chemistry - Questions 91 to 100

AP EAMCET Chemistry - MCQs (91 to 100)

91. Which of the following methods is used for the concentration of ores?

A) Electrolysis
B) Leaching
C) Distillation
D) Condensation

Answer: B) Leaching

92. The reduction of iron oxide to iron in the blast furnace is an example of:

A) Thermodynamic reduction
B) Electrochemical reduction
C) Photochemical reduction
D) Chemical reduction

Answer: D) Chemical reduction

93. Which of the following is used in the extraction of copper from its ores?

A) Magnetic separation
B) Froth flotation
C) Leaching with sulfuric acid
D) Zone refining

Answer: C) Leaching with sulfuric acid

94. The Ellingham diagram is used to predict:

A) The concentration of ores
B) The stability of metal oxides
C) The refining process of metals
D) The reduction of ores to metals

Answer: B) The stability of metal oxides

95. Which of the following is used to refine impure copper?

A) Electrolysis
B) Liquation
C) Distillation
D) Poling

Answer: A) Electrolysis

96. The chemical formula of dinitrogen is:

A) N2
B) N3
C) N4
D) N

Answer: A) N2

97. Which of the following is the correct electronic configuration of phosphorus?

A) 1s² 2s² 2p⁶ 3s² 3p³
B) 1s² 2s² 2p⁶ 3s² 3p²
C) 1s² 2s² 2p⁶ 3s² 3p⁴
D) 1s² 2s² 2p⁶ 3s² 3p⁵

Answer: A) 1s² 2s² 2p⁶ 3s² 3p³

98. Which of the following is used to prepare nitric acid?

A) Oxidation of ammonia
B) Reduction of nitric oxide
C) Dehydration of nitric acid
D) Direct synthesis from nitrogen and oxygen

Answer: A) Oxidation of ammonia

99. Which of the following is an allotrope of phosphorus?

A) White phosphorus
B) Red phosphorus
C) Black phosphorus
D) All of the above

Answer: D) All of the above

100. The main use of zinc is in:

A) Batteries
B) Galvanization
C) Making alloys
D) Both B and C

Answer: D) Both B and C

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AP EAMCET (EAPCET) Chemistry Multiple Choice Questions (MCQs)

AP EAMCET Chemistry - MCQs (91 to 100)

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