AP EAMCET · Chemistry · General Principles and Processes of Isolation of Metals
Match the items of List-I with those of List-II and choose the correct option given below.
\(\begin{array}{|c|c|}
\hline \text { List-I } & \text { List-II } \\
\hline \text { A. Calcination } & \text { 1. Galena } \\
\hline \text { B. Roasting } & \text { 2. Magnetite } \\
\hline \text { C. Magnetic separation } & \text { 3. Pyrometallurgy } \\
\hline \text { D. Carbon reduction of metal oxide } & \text { 4. Malachite } \\
\hline
\end{array}\)
- A \(\begin{array}{llll} \mathrm{A} & \mathrm{B} & \mathrm{C} & \mathrm{D} \\ 4 & 1 & 3 & 2 \end{array}\)
- B \(\begin{array}{cccc} \mathrm{A} & \mathrm{B} & \mathrm{C} & \mathrm{D} \\ 4 & 1 & 2 & 3 \end{array}\)
- C \(\begin{array}{llll} \mathrm{A} & \mathrm{B} & \mathrm{C} & \mathrm{D} \\ 2 & 4 & 3 & 2 \end{array}\)
- D \(\begin{array}{cccc} \mathrm{A} & \mathrm{B} & \mathrm{C} & \mathrm{D} \\ 3 & 2 & 1 & 4 \end{array}\)
Answer & Solution
Correct Answer
(B) \(\begin{array}{cccc} \mathrm{A} & \mathrm{B} & \mathrm{C} & \mathrm{D} \\ 4 & 1 & 2 & 3 \end{array}\)
Step-by-step Solution
Detailed explanation
(A) Calcination For hydrated carbonate or bicarbonate ores \(\Rightarrow(4)\) malachite, \(\mathrm{CuCO}_3 \cdot \mathrm{Cu}(\mathrm{OH})_2\) (B) Roasting For sulphide ores \(\Rightarrow\) (1) galena, \(\mathrm{PbS}\) (C) Magnetic separation For magnetic ore or gangue…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Chemistry
- The number of elements among \(\mathrm{O}, \mathrm{Cl}, \mathrm{F}, \mathrm{N}\), \(\mathrm{P}, \mathrm{Sn}, \mathrm{Ti}, \mathrm{K}, \mathrm{Sc}\), which show more than one non-zero oxidation state isAP EAMCET 2020 Easy
- During electro-osmosis of sol,AP EAMCET 2015 Easy
- Observe the following statements
i. The dipole moment of \(\mathrm{NH}_3\) is higher than the dipole moment of \(\mathrm{NF}_3\).
ii. The dipole moment of chloroform is zero.
iii. Covalent bond character in \(\mathrm{NaCl}\) is more compared to \(\mathrm{CuCl}\).AP EAMCET 2018 Easy - Nylon 6, 6 is a condensation polymer of two monomers \(X\) and \(Y\). The number of \(-\mathrm{CH}_2-\) groups in \(X\) and \(Y\) are respectivelyAP EAMCET 2018 Easy
- The disproportionation products of ortho phosphorous acid areAP EAMCET 2024 Medium
- The dominant intermolecular force that must be overcome to convert liquid methanol to its vapour isAP EAMCET 2021 Easy
More PYQs from AP EAMCET
- During an adiabatic process, the pressure of a gas is proportional to the cube of its temperature. The value of \(C_p / C_V\) for that gas isAP EAMCET 2011 Medium
- If then the value of equalsAP EAMCET 2021 Easy
- The relative basic strength of the compounds is correctly shown in the option.AP EAMCET 2022 Medium
- The magnitude of the external force acting on moving bodies can be known directly byAP EAMCET 2023 Easy
- If the mean of 100 observations is 50 and their standard deviation is 5 , then the sum of squares of all observations isAP EAMCET 2020 Easy
- X denotes the number of times heads that occur in n tosses of a fair coin. If \(P(X=4), P(X=5)\) and \(P(X=6)\) are in arithmetic progression, the largest value of n isAP EAMCET 2025 Hard