1. On the basis of position in the electrochemcial series, the metal which does not displace hydrogen from water and acids is

1. 1. Al

   
   
   

   2. Pb

   
   
   

   3. Ba

   
   
   

   4. Hg

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

---

2. Which of the following metals is not attacked by the environment ?

1. 1. Gold

   
   
   

   2. Copper

   
   
   

   3. Silver

   
   
   

   4. Iorn

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

---

---

3. The most powerful reducing agent is

1. 1. K

   
   
   

   2. Ba

   
   
   

   3. Na

   
   
   

   4. Mg

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

---

4. Iron rusts in the presence of

1. 1. Vaccum

   
   
   

   2. Moisture

   
   
   

   3. Oxygen

   
   
   

   4. Both (b) and (c)

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

---

---

5. The art of electroplating was given by

1. 1. Edison

   
   
   

   2. Faraday

   
   
   

   3. Thomas Grahan

   
   
   

   4. Brugan

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

---