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Solution


Q.

Read the passage carefully and answer the following questions from (i) to (v).

Metals exhibit their chemical properties as per their electron releasing tendency of atoms. The greater the tendency, the more is the reactivity. Metals react with oxygen, water, hydrogen, acids, etc. They act as reducing agents because they can lose electrons. Some reactions metals undergo are given in this Table:

1. Metal + Oxygen → Metal oxide
2. Metal + Water → Metal Hydroxide + Hydrogen
3. Metal + Acid (dil.) → Metal Salt + Hydrogen
4. Metal A + Salt Solution of Metal B → Salt solution of A + B (Displacement)

 

(iii) Identify four metals P, Q, S, T with the hints given below:

P forms basic oxides
Q forms amphoteric oxides
S oxide dissolves in water to form alkali
T does not react with water
1 P → Zn, Q → Al, S → Na, T → Fe  
2 P → Fe, Q → Na, S → K, T → Zn  
3 P → K, Q → Cu, S → Pb, T → Na  
4 P → Cu, Q → Zn, S → K, T → Pb  

Ans.

(4)