Saved Bookmarks
| 1. |
Which of the following is the correct arrange-ment of the given metals in ascending order of their reactivity? Zinc, Iron, Magnesium, Sodium (a) Zinc > Iron > Magnesium > Sodium (b) Sodium > Magnesium > Iron > Zinc (c) Sodium > Zinc > Magnesium > Iron (d) Sodium > Magnesium > Zinc > Iron |
|
Answer» Coefficient of x 2 in AX 2 +bx+c=0 is a.Hence, coefficients of x 2 in(i) 2+x 2 +x is 1(ii) 2−x 2 +x 3 is −1(III) 2π x 2 +x is 2π (iv) 2 x−1 is 0Explanation:I think 4th ONE correct |
|