Science
The pair(s) which will show displacement reaction is/are
(i) NaCl solution and copper metal
(ii) AgNO3 solution and copper metal
(iii) Al2(SO4)3 solution and magnesium metal
(iv) ZnSO4 solution and iron metal
- (ii) only
- (ii) and (iii)
- (iii) and (iv)
- (i) and (ii)
Answer
(ii) and (iii)
Reason — AgNO3 solution and copper metal will give displacement reaction where copper being more reactive than silver, displaces it from silver nitrate . Similarly, Al2(SO4)3 solution and magnesium metal will give displacement reaction where magnesium being more reactive than aluminium, displaces it from aluminium sulphate.
Related Questions
Which one of the following structures correctly depicts the compound CaCl2?
Which of the following salts do not have the water of crystallisation?
(i) Bleaching Powder
(ii) Plaster of Paris
(iii) Washing soda
(iv) Baking soda
- (ii) and (iv)
- (i) and (iii)
- (ii) and (iii)
- (i) and (iv)
Study the experimental set-up shown in given figure and choose the correct option from the following:
P Q Change observed in calcium hydroxide solution 1.K2CO3 Cl2 gas No change 2.KHCO3 CO2 gas No change 3.KHCO3 H2 gas Turns milky 4.K2CO3 CO2 gas Turns milky Assertion (A): Sodium hydrogen carbonate is used as an ingredient in antacids.
Reason (R): NaHCO3 is a mild non-corrosive basic salt.
- Both A and R are true, and R is the correct explanation of A.
- Both A and R are true, and R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.