CLASS: X NCERT (CBSE)
SCIENCE: Chemistry
Metals and Non-metals
Question 1: Of these, the most ductile metal is ___________.
1. Al
2. Au
3. Cu
4. Ag
Answer: 2
Question 2: Of these, the least dense metal is ___________.
1. Hg
2. Au
3. Cu
4. Na
Answer: 4
Question 3: Of these, the most reactive metal is ___________.
1. Fe
2. Zn
3. Al
4. K
Answer: 4
Question 4: Which of the following is displaced by ‘Cu’?
1. Fe2+
2. Ag+
3. Zn2+
4. Al3+
Answer: 2
Question 5: Which of the following metals does not displace H2 gas from dilute HCl or dilute H2SO4?
1. Mg
2. Cu
3. Zn
4. Al
Answer: 2
Question 6: The metal reacting readily with cold water is ___________.
1. Au
2. Ag
3. Na
4. Mg
Answer: 3
Question 7: Of these, which metal will lose electrons most readily and form cations?
1. K
2. Zn
3. Cu
4. Au
Answer: 1
Question 8: Of these, which ion will get reduced most readily?
1. K+
2. Zn2+
3. Cu2+
4. Ag+
Answer: 4
Question 9: Of these, the metal which occurs in a free state is ___________.
1. Na
2. Mg
3. Zn
4. Pt
Answer: 4
Question 10: Which of the following metals is extracted only by electrolysis?
1. Zn
2. Al
3. Fe
4. Cu
Answer: 2
Question 11: Which oxide of a metal gets reduced only by coke and not by H2 gas or CO gas?
1. Fe2O3
2. PbO
3. ZnO
4. CuO
Answer: 3
