TS EAMCET · Chemistry · Electrochemistry
A metal plate of dimension of \(\left(1 \times 2 \mathrm{~cm}^2\right)\) has to be coated on both the sides by \(\mathrm{Cu}\) metal. How long does it take to deposit \(\mathrm{Cu}\) of \(0.01 \mathrm{~cm}\) thickness, if \(1.5 \mathrm{~A}\) current is used? [Electrochemical equivalence of \(\mathrm{Cu}\) is \(0.0003 \mathrm{~g} / \mathrm{C}\) and the density of \(\mathrm{Cu}\) is \(\left.9 \mathrm{~g} / \mathrm{cm}^3\right]\)
- A 400 s
- B 800 s
- C 120 s
- D 160 s
Answer & Solution
Correct Answer
(B) 800 s
Step-by-step Solution
Detailed explanation
Step I : Calculate volume \[ \begin{aligned} & =\text { area } \times \text { thickness }(\text { two times) } \\ & =1 \times 2 \mathrm{~cm}^2 \times 2 \times 0.01=0.04 \end{aligned} \] Step II : Mass of material deposited…
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
- In the Millikan's oil drop method, which of the following force does not act on the oil drop?TS EAMCET 2019 Easy
- In which group of the periodic table the element with \(Z=120\) be placed?TS EAMCET 2019 Easy
- Which of the following compounds will be suitable for estimation of nitrogen by Kjeldahl's method?
TS EAMCET 2025 Medium - ' X ' is a polymer, which is mainly used for making unbreakable cups and laminated sheets. The monomers of ' X ' areTS EAMCET 2025 Easy
- Identify the correct statements from the following: (i) \(\mathrm{Ti}(\mathrm{IV})\) is more stable than Ti (III) and Ti (II) (ii) Among 3d-series elements (from \(Z=22\) to 29) only copper has positive reduction potential ( \(\mathrm{M}^{2+} / \mathrm{M}\) ) (iii) Both Sc and Zn exhibit +1 oxidation stateTS EAMCET 2024 Medium
- For a zero order reaction \(\mathrm{A} \rightarrow\) product, a plot of \([\mathrm{A}]\) (on \(\mathrm{y}\)-axis) and time (on \(\mathrm{x}\)-axis) gave a straight line with slope equal to \(-3 \times 10^{-3} \mathrm{M} \mathrm{min}^{-1}\) and intercept equal to \(2 \times 10^{-2} \mathrm{M}\) (on y-axis). What is the rate constant (in \(\mathrm{M} \mathrm{min}^{-1}\) ) of this reaction?TS EAMCET 2023 Medium
More PYQs from TS EAMCET
- If \(2 x^2+3 x y-y^2+4 x-5 y+6=0\), then the value of \(\frac{d y}{d x}\) at \((x, y)=(1,-2)\) isTS EAMCET 2023 Easy
- The percentage increase in the energy for an artificial satellite to shift it from an orbit of radius \(r\) to an orbit of radius \(\frac{3 r}{2}\) isTS EAMCET 2023 Hard
- Which one of the following is the molecular formula of a tertiary amine?TS EAMCET 2002 Easy
- A toroid has an iron core with an internal magnetic field of , when the current in the winding of 1500 turns per meter is . Deternine the field due to magnetizationTS EAMCET 2019 Medium
- \(A+B=C \quad \Rightarrow\) \(\cos ^2 A+\cos ^2 B+\cos ^2 C-2 \cos A \cos B \cos C\) is equal toTS EAMCET 2005 Medium
- If a point \((x, y)=(\tan \theta+\sin \theta, \tan \theta-\sin \theta)\), then the locus of \((x, y)\) isTS EAMCET 2002 Medium