Chemistry For Class IX (New Book ) - Chapter No. 3 - Periodic Table And Periodicity Of Properties - Multiple Choice Questions And Fill In The Blanks

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Chapter No.3 - Periodic Table And Periodicity Of Properties
MCQs And Fill In The Blanks
Text Book Exercise

SECTION- A: MULTIPLE CHOICE QUESTIONS
Tick Mark (✓) the correct answer

1. In 1869 Mandeleev put forward his periodic law about:
(a) Atomic Number
(b) Chemical properties ✓
(c) Physical properties ✓
(d) Atomic Mass ✓

2. The periodic table divided into S, P, d, and f block based on.
(a) Atomic Radius
(b). Electronic Configuration ✓
(c) Ionization Energy
(d). Electron Affinity

3. 4^th and 5^th period in periodic table are known as:
(a) Short period
(b) Long period ✓
(c) Normal period
(d) Very long period

4. Which one of the following decreases along the period?
(a) Ionization Energy
(b) Atomic Radius ✓
(c) Electronegativity
(d) Electron Affinity

5. The elements of VIIA group are known as:
(a) Lanthanides
(b) Actinides
(c) Halogens ✓
(d) Nobel Gases

6. According to Mosely the chemical properties of elements are the periodic function of their:
(a) Atomic Size
(b) Atomic Mass
(c) Atomic Radius
(d) Atomic Number ✓

7. The shielding effect across the period:
(a) Increases
(b) Decrease
(c) Moderate
(d) Same ✓

8. The ability to attract shared pair of electron is called:
(a) Electron Affinity
(b) Electronegativity ✓
(c) Ionization Energy
(d) Shielding Effect

9. In group electron affinity values decreases from top to bottom because:
(a) Atomic size normal
(b) Atomic size increases ✓
(c) Atomic size decreases
(d) Atomic size same

10. All Transition Elements are:
(a) Gases
(b) Metals ✓
(c) Nonmetals
(d) Metalloids