Which one is malachite from the following ?
- $Fe_3O_4$
- $CuCO_3.Cu(OH)_2$
- $CuFeS_2$
- $Cu(OH)_2$
The Correct Option is B
Solution and Explanation
The question asks us to identify malachite from the given list of chemical formulas. Let's explore these options one by one:
- $Fe_3O_4$: This is the chemical formula for magnetite, an iron oxide mineral and not related to copper compounds.
- $CuCO_3.Cu(OH)_2$: This is the chemical formula for malachite, a copper carbonate hydroxide mineral. It is known for its vibrant green color and is used as a gemstone and as a pigment.
- $CuFeS_2$: This is the chemical formula for chalcopyrite, which is a copper iron sulfide mineral and not related to malachite.
- $Cu(OH)_2$: This stands for copper(II) hydroxide, which is not a carbonate and doesn't match the composition of malachite.
From the explanations above, it's clear that the correct answer is the second option: $CuCO_3.Cu(OH)_2$.
Hence, the answer is malachite, which is chemically represented as $CuCO_3.Cu(OH)_2$.
Top Questions on General Principles and Processes of Isolation of Elements
A block of mass 1 kg is pushed up a surface inclined to horizontal at an angle of \( 60^\circ \) by a force of 10 N parallel to the inclined surface. When the block is pushed up by 10 m along the inclined surface, the work done against frictional force is:
[Given: \( g = 10 \) m/s\( ^2 \), \( \mu_s = 0.1 \)]
- BITSAT - 2024
- Physics
- General Principles and Processes of Isolation of Elements
- A particle of mass \( 2 \) kg is on a smooth horizontal table and moves in a circular path of radius \( 0.6 \) m. The height of the table from the ground is \( 0.8 \) m. If the angular speed of the particle is \( 12 \) rad/s, the magnitude of its angular momentum about a point on the ground right under the center of the circle is:
- BITSAT - 2024
- Physics
- General Principles and Processes of Isolation of Elements
A gas can be taken from A to B via two different processes ACB and ADB. When path ACB is used, \( 60 J \) of heat flows into the system and \( 30 J \) of work is done by the system. If path ADB is used, the work done by the system is \( 10 J \). The heat flow into the system in path ADB is:
- BITSAT - 2024
- Physics
- General Principles and Processes of Isolation of Elements
- An oil drop of radius \(1 \, \mu{m}\) is held stationary under a constant electric field of \(3.65 \times 10^4 \, {N/C}\) due to some excess electrons present on it. If the density of the oil drop is \(1.26 \, {g/cm}^3\), then the number of excess electrons on the oil drop approximately is:
[Take, g = 10 m/s2]- BITSAT - 2024
- Physics
- General Principles and Processes of Isolation of Elements
- Want to practice more? Try solving extra ecology questions todayView All Questions
