The number of Faradays (F) required to produce 20 g of calcium from molten CaCl2 (Atomic mass of Ca=40 g mol-1) is:
1. 2
2. 3
3. 4
4. 1
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyDuring the electrolysis of molten sodium chloride, the time required to produce 0.10 mol of chlorine gas using a current of 3 amperes is
1. 55 minutes
2. 110 minutes
3. 220 minutes
4. 330 minutes
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe number of electrons delivered at the cathode during electrolysis by a current of 1 ampere in 60 seconds is :
(Charge on electron = 1.60x 10-19 C)
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhen 0.1 mol MnO42- is oxidized the quantity of electricity required to completely oxidise MnO42-- to MnO4- is :
1. 96500 C
2. 2 x 96500 C
3. 9650 C
4. 96.50 C
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe weight of silver (at.wt. = 108) displaced by a quantity of electricity which displaces 5600 mL of O2 at STP will be :
1. 5.4 g
2. 10.8 g
3. 54.0 g
4. 108.0 g
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn producing chlorine by electrolysis, 100 kW power at 125 V is being consumed. How much chlorine per minute is liberated (ECE of chlorine is 0.367 X 10-6 kgC-1)
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyFor the reduction of silver ions with copper metal, the standard cell potential was found to be +0.46 V at 25 °C. The value of standard Gibbs energy, ΔGo will be :
(F = 96500 C mol-1)
1. -89.0 kJ
2. -89.0 J
3. -44.5 kJ
4. -98.0 kJ
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAl2O3 is reduced by electrolysis at low potentials and high currents. If 4.0 x 104 A of current is passed through molten Al2O3 for 6 hours, what mass of aluminium is produced ?
(Assume 100 % current efficiency, atomic mass of Al = 27 g mol-1)
1. 9.0 x 103 g
2. 8.1 X 104 g
3. 2.4 x 105 g
4. 1.3 X 104 g
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA steady current of 1.5 A flows through a copper voltmeter for 10 min. If the electrochemical equivalent of copper is 30 × 10-5 g C-1, the mass of copper deposited on the electrode will be :
1. 0.40 g
2. 0.50 g
3. 0.67 g
4. 0.27 g
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyPrefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot
NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology