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DSSSB TGT Natural Science Female Subject Concerned - 27 Sept 2018 Shift 3

Option 1 : 2, 5, 6

**Explanation -**

- The given equation is :

xMnO_{4}^{-} + ySO_{2} + zH+ + xH_{2}O → xMn ^{+2} + yH_{2}SO_{4 }

- This equation is unbalanced, as the number of atoms in
**LHS is not equal to RHS.**

LHS |
RHS |

O = 7 |
O = 4 |

H = 3 |
H = 2 |

Mn = 1 |
Mn = 1 |

S = 1 |
S = 1 |

- By filing up the accurate values of x,y, and z which will help make the number of atoms in LHS equal to RHS will make the equation balanced.
- Thus, the balanced equation will be -

**2**MnO_{4}- + **5**SO2 +** 6**H+ + **2**H2O → **2**Mn +2 + **5**H2SO4

LHS |
RHS |

O = 8+ 10 + 2 = 20 |
O = 20 |

H = 6 + 4 = 10 |
H = 10 |

Mn = 2 |
Mn = 2 |

S = 5 |
S = 5 |

The correct values of x,y, and z are **2, 5, and 6** respectively which makes the **equation balanced.** ( LHS = RHS )

Thus, the answer to this question is -** 2, 5, 6.**