JEE CHEMISTRY UNIT 09
QUIZ NO 4
TOTAL QUESTIONS = 20
1. Which of the following pairs are isoelectronic?
A. O2- and F
B. Ca2+ and Ar
C. K and Cl
D. Na+ and Mg2+
2. The periodic law states that properties of elements are periodic functions of their
A. Atomic mass
B. Molecular mass
C. Atomic number
D. Density
3. The element with atomic number 29 belongs to
A. d-block
B. p-block
C. s-block
D. f-block
4. The electron affinity of noble gases is
A. Zero
B. High
C. Negative
D. Low
5. The atomic radius of a cation is
A. Larger than the parent atom
B. Smaller than the parent atom
C. Equal to the parent atom
D. Depends on the charge
6. Which of the following elements has the largest atomic radius?
A. Li
B. Rb
C. K
D. Na
7. Which of the following elements is a noble gas?
A. Nitrogen
B. Neon
C. Oxygen
D. Chlorine
8. Which of the following is a characteristic of d-block elements?
A. Non-metallic character
B. Low melting points
C. High melting and boiling points
D. Lack of conductivity
9. Which of the following elements is an alkali metal?
A. Sodium
B. Aluminium
C. Magnesium
D. Potassium
10. The screening effect is more in
A. f orbitals
B. s orbitals
C. d orbitals
D. p orbitals
11. The periodic table is divided into
A. s, p, d, f blocks
B. Halogens and noble gases
C. Groups and periods
D. Metals, nonmetals, metalloids
12. Which of the following elements has the highest first ionization energy?
A. Argon
B. Fluorine
C. Helium
D. Neon
13. Which of the following elements is a d-block element?
A. Oxygen
B. Chlorine
C. Scandium
D. Calcium
14. The element with atomic number 17 belongs to which group?
A. Group 1
B. Group 17
C. Group 18
D. Group 7
15. The element with atomic number 35 is
A. Bromine
B. Chlorine
C. Fluorine
D. Iodine
16. Which element has the highest ionization energy?
A. Neon
B. Fluorine
C. Helium
D. Oxygen
17. Which of the following is a transition element?
A. Chlorine
B. Scandium
C. Sodium
D. Magnesium
18. The metallic character of elements increases
A. Across a period
B. Down a group
C. From right to left
D. Both A and C
19. The first ionization energy of elements decreases down a group because
A. All of the above
B. Atomic size increases
C. Shielding effect decreases
D. Nuclear charge increases
20. Which of the following is not a transition metal?
A. Titanium
B. Zinc
C. Iron
D. Scandium
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