Download App

Model Paper 1 — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETModel Paper 14 Marks
MCQ
In the reactions given below, identify the element undergoing oxidation and reduction:
$3 Fe_3 O_4(s)+8 Al(s) \rightarrow 9 Fe(s)+4 Al_2 O_3(s)$
  • A
    AI, O
  • B
    AI, Fe
  • ✓
    Fe, O
  • D
    None of these
✓

Answer

Correct option: C.
Fe, O
(C) AI, Fe
Aluminium is oxidised because oxygen is added to it. Ferrous ferric oxide redox reactions $\left( Fe _3 O _4\right)$ is reduced because oxygen has been removed from it.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "SECTION - A [CHEMISTY - MCQ]" from Model Paper 1→Model Paper 1 — all question types→NEET STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

The reaction $A \to B$ follows first order kinetics. The time taken for $0.8\,mole$ of $A$  to produce $ 0.6\,mole$ of $B$ is $1$ hour . What is the time taken for conversion of $0.9\,mole$ of $A$  to produce $0.675\,mole$ of $ B$ ......... $hr$
→
Which of the following is the strongest acid
→
Animal starch is the other name of.
→
$Co|Co^{2+}(C_2)||Co^{2+}(C_1)|Co$, for this cell, $\Delta G$ is negative if
→
Amalgams are
→
An ideal solution has two components $A$ and $B$. If $A$ is more volatile than $B$ and also ${P_A}^o > {P_T}$, then the correct relation between mole fraction of $A$ in liquid $(x)$ and vapour $(y)$ phase is
→
An element $X$ belongs to group $16$ and $5^{th}$ period. Its atomic number is
→
Which of the following statements is correct ? Galvanic cell converts
→
$1.8\, g$ of fructose is added to $2\, kg$ of water. The freezing point of the solution is $(k_f = 1.86\, K\, m^{-1})$
→
Which of the following properties of halogens increase with increasing atom is number?

$(I)$ Ionization energy      $(II)$ Ionic radius

$(III)$ Bond energy of the $X_2$ molecule     $(IV)$ Enthalpy of vaporisation

→