Question
When copper sulphate solution reacts with iron metal,
copper metal is formed. Which of the following reactions is this?Solution
A displacement reaction is a type of reaction in which part of one reactant is replaced by another reactant. β’ Single displacement reaction: These are the reactions in which one reactant replaces part of the other. β’ For example: Fe + CuSO4 β FeSO4 + Cu. β’ Double displacement reaction: These are the reactions in which the cations and anions in the reactants switch partners to form products. β’ For example: AgNO3 + NaCl β AgCl + NaNO3
- Which letter-cluster will replace the question mark (?) in the following series?
RGV, UME, ?, AYW, DEF - A series is given with one term missing. Choose the correct alternatives from the given ones that will complete the series.
57, 59, 56, 61, 54, ___ - Which letter-cluster will replace the question mark (?) in the following series?
NPQR, OORQ, PNSP, ____, RLUN - Select the number from among the given options that can replace the question mark (?) in the following series.
17, 18, 22, 31, 47, ___ - Which letter and number cluster will replace the question mark (?) to complete the given series?
LT6, KU12, IW24, FZ48, ____