Full Biology Mock Test for NEET. We covered all the Full Biology Mock Test for NEET in this post for free so that you can practice well for the exam.
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MCQ on Redox Reaction for NEET Students
The oxidation state of potassium in KIO3 is ………
Option b – +1
Identify the element that undergoes reduction. MnO₂ + 2KOH + KNO3 -> K₂MnO4 + KNO₂ + H₂O
Option d – N
Which of the following is an INCORRECT statement?
(A) The oxidation number of O in OF2 is +2.
(B) The oxidation number of O in Cl₂O is -2.
(C) The oxidation number of O in H₂O₂ is -1.
(D) The oxidation number of O in O3 is -2.
Option d – The oxidation number of O in O3 is -2.
In the reaction 3CuO+2NH3 → N₂+ 3H₂O + 3Cu, the change of NH3 to N₂ involves ……….
(A) loss of 6 electrons per mol of N₂
(B) loss of 3 electrons per mol of N₂
(C) gain of 6 electrons per mol of N₂
(D) gain of 3 electrons per mol of N₂
Option a – loss of 6 electrons per mol of N₂
The two complexes PtCl4.2NH3 and PtCl4.2KC do not give a precipitate of AgCl when treated with AgNO3. The formulae of these complexes are …….. respectively.
(A) [Pt(NH3)2Cl4] and K2PtCl6
(B) [Pt(NH3)2]Cl4 and K2PtCl6
(C) [Pt(NH3)₂Cl2]Cl2 and K₂[PtCl4]Cl₂
(D) [Pt(NH3)2Cl4] and K₂[PtCl5]CI
Option a – [Pt(NH3)2Cl4] and K2PtCl6
When methane is burnt in oxygen to produce CO₂ and H₂O, the oxidation number of C changes by ………. units.
Option d – 8
The e.m.f. of the cell Ag | Ag (0.01 M) || Ag (0.1M)| Ag at 298 K is …….
(A) 0.0059 V
(B) 0.059 V
(C) 5.9 V
(D) 0.59 V
Option b – 0.059 V
A lamp draws a current of 1.0 A. Find the charge in the coulomb used by the lamp in 60 s.
(A) 1 C
(B) 30 C
(C) 60 C
(D) 600 C
Option c – 60 C
In which of the following compounds, carbon exhibits a valence of 4 but an oxidation state of -2?
Option a – CH3Cl
Which of the following aqueous solution has the highest conductivity?
(A) 0.1 M Acetic acid solution
(B) 0.01 M Acetic acid solution
(C) 0.02 M Acetic acid solution
(D) 0.005 M Acetic acid solution
Option a – 0.1 M Acetic acid solution
When a lead storage battery is discharged, ………
(A) SO₂ gas is evolved
(B) lead is formed
(C) lead sulphate is consumed
(D) sulphuric acid is consumed
Option d – sulphuric acid is consumed
The oxidation state of iodine is negative in ………
Option a – NaI
When 96500 coulombs of electricity are passed through nickel sulphate solution, the amount of nickel deposited will be ……..
(A) 1 mol
(B) 0.5 mol
(C) 0.1 mol
(D) 2 mol
Option b – 0.5 mol
If four moles of electrons are transferred from anode to cathode in an experiment on the electrolysis of water, then the total volume of the two gases produced at STP will be :
(A) 224 L
(B) 72.6 L
(C) 67.2 L
(D) 89.4 L
Option c – 67.2 L
The oxidation number of H, S, and O in sulphurous acid is …….. respectively.
(A) +1, +7 and -2
(B) +1, +4 and -2
(C) +1, +3 and -1
(D) +1, +3 and -2
Option b – +1, +4 and -2
If the salt bridge between two half cells of a galvanic cell is removed, ……….
(A) the voltage increases rapidly
(B) the voltage increases gradually
(C) the voltage remains the same
(D) the voltage drops to zero
Option d – the voltage drops to zero
For 1 molal aqueous solution of the following compounds, which one will show the lowest freezing point?
Option a – [Co(H₂O)6]Cl3
When 0.5 mol CoCl3.4NH3 is treated with an excess of AgNO3, 0.5 mol of AgCl is obtained. The conductivity of the solution will correspond to ……..
(A) 1 : 3 electrolyte
(B) 1 : 2 electrolyte
(C) 1 : 1 electrolyte
(D) 3 : 1 electrolyte
Option c – 1 : 1 electrolyte
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