JEE CHEMISTRY UNIT 11
QUIZ NO 1
TOTAL QUESTIONS = 20
1. Which of the following is a characteristic property of transition elements?
A. High melting and boiling points
B. Poor electrical conductivity
C. Low density
D. Poor magnetic properties
2. Which of the following is the lightest transition metal?
A. Zn
B. Ti
C. V
D. Sc
3. Which of the following is used as a catalyst in the Ostwald process?
A. PdCl2
B. Fe2O3
C. Pt
D. V2O5
4. What is the oxidation state of Fe in Fe3O4?
A. +2
B. +1
C. +3
D. +8/3
5. Which property is unique to actinides compared to lanthanides?
A. Radioactive decay
B. Formation of alloys
C. Radioactivity
D. Paramagnetism
6. Which of the following elements has the maximum magnetic moment?
A. Co
B. Mn
C. Ni
D. Fe
7. What is the main ore of chromium?
A. Chromite
B. Hematite
C. Magnetite
D. Fluorite
8. What is the geometry of [Fe(CN)6]4-?
A. Square planar
B. Trigonal planar
C. Tetrahedral
D. Octahedral
9. What is the color of hydrated Cu2+ ions in water?
A. Yellow
B. Green
C. Blue
D. Red
10. Which is the hardest known transition metal?
A. Nickel
B. Iron
C. Cobalt
D. Tungsten
11. Which of the following ions shows paramagnetic behavior?
A. Ti4+
B. Fe2+
C. Zn2+
D. Cu2+
12. Which of the following ions has the maximum hydration energy?
A. Fe3+
B. Ca2+
C. Al3+
D. Mg2+
13. Which of the following is a transition element but not a noble metal?
A. Fe
B. Ni
C. Cu
D. Ag
14. Which of the following is an important ore of uranium?
A. Pitchblende
B. Carnotite
C. Magnetite
D. Hematite
15. Which of the following ions does not exhibit any color in solution?
A. Cu2+
B. Sc3+
C. Ti4+
D. Mn2+
16. Which transition metal forms the most number of oxides?
A. Mn
B. Cr
C. Ni
D. Fe
17. Which element is extracted from monazite ore?
A. Neodymium
B. Thorium
C. Cerium
D. Lanthanum
18. What is the main reason for the lanthanide contraction?
A. Low effective nuclear charge
B. High nuclear charge
C. Poor shielding by f-electrons
D. Electron-electron repulsion
19. What is the formula of potassium dichromate?
A. Cr2O7
B. K2Cr2O7
C. KCrO4
D. K2CrO4
20. Which of the following ions is colorless?
A. Zn2+
B. Ti4+
C. Cu2+
D. Sc3+
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