Periodic Table and Periodicity of elements [PDF]
Madhyamik Physical Science
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Periodic Table and Periodicity of elements
Here you are going to get important questions on the following chapters of Madhyamik Physical Science.
- Periodic table
- Chemical boding
- Electrolysis
- Inorganic chemistry
- Metallurgy
- Organic Chemistry
From all the above-mentioned chapters you are going to get important questions of 1 mark and Important MCQ’s. They will help you to get maximum marks in Madhyamik physical science. Here we are providing you only Chapter 8.1 Periodic Table and periodicity of elements.
Important Questions on Madhyamik Physical Science Chapter 8.1 Periodic Table and Periodicity of elements
15 Most Important MCQ with answers on Madhyamik Physical Science
1. Which element in the following is not a transitional element?
(a) Au
(b) Fe
(c) CO
(d) Bi
Ans. (d) Bi.
2. Which element in a halogen is radioactive?
(a) Fluorine (F)
(b) Chlorine (CI)
(c) Bromine (Br)
(d) Statin (At)
Ans. (d) Statin (At).
3. Mendeleev’s periodic law is based on which property?
(a) Atomic number
(b) Atomic mass
(c) Molecular mass
(d) on all these
Ans. (b) Atomic mass
4. Alkali metals are placed in which category of the periodic table?
(a) IA
(b) IB
(c) VIIA
(d) VIIB
Ans. (a) IA
5. What is the valence of halogen elements?
(a) 1 (b) -1 (c) 2 (d) -2
Ans. (b) -1
6. Going from left to right for any period, the metallic properties of the element –
(a) increases
(b) decreases
(c) sometimes decreases increases
(d) remains the same
Ans. (b) decreases.
7. Who is the most active metal?
(a) Na
(b) Mg
(c) Al
(d) Si
Ans. (a) Na
8. Who is the most active metal in the following?
(a) Si
(b) P
(c) S
(d) Cl
Ans. (d) CI
9. Each period of the periodic table has its last element
(a) Metals
(b) Non-metals
(c) Metalloids
(d) Inert gas
Ans. (d) Inert gas
10. What is the basis of the classification of elements over the n periodic table?
(a) Atomic number (b) Atomic mass:
(c) Atomic density (d) Atomic volume
Ans. (a) Atomic number.
11. According to Mendeleev, elements’ physical and chemical properties are terminal by their periodic function.
(a) Atomic number
(b) Atomic mass
(c) Atomic volume
(d) Atomic density
Ans. (b) Atomic mass
12. The most electronegative element is placed in which Group?
(a) Group -1
(b) Group – 5
(c) Group- 17
(d) Group -18
Ans. (c) Group – 17
13. Which of the following is a reference to the essence?
(a) Of chlorine
(b) of fluorine
(c) of bromine
(d) of iodine
Ans. (b) of fluorine.
14. Lothar Mayer’s classification of elements is based on which properties?
(a) Atomic mass
(b) Atomic number
(c) Molecular weight
(d) Atomic volume and atomic weight
Ans. (d) Atomic volume and atomic weight.
15. What are radioactive elements collectively called?
(a) Actinide (b) Siderite
(c) Dolomite (d) Lanthanide
Ans. (a) Actinide.
10 Most Important 1-mark questions with answers on Madhyamik Physical Science
1. Who gave the modern periodic table?
Ans. Mosley.
2. Where are the alkaline earth metals placed in the periodic table?
Ans. Second class.
3. The atomic number of A is 35 and B is 36. Both belong to the third period. Which will be bigger.
Ans. A (35)
4. Three elements have atomic no A (2), B (10), and C (5). Which of these belong to the same period?
Ans. B (2,8) and C (2,3)
5. Among the two elements A (2, 8, 1) and B (2, 8, 8, 1) which is more electropositive?
Ans. B (2, 8, 8, 1)
6. Elements A, B, C, and D Have valence electrons 1, 2 ,3, and 4. Do these elements belong to the same period or the same group?
Ans. Same period
7. How many elements are there in short periods?
Ans. Eight in the second and eight in the third.
8. How many periods are there in Mendeleev’s periodic table?
Ans. The number of periods in Mendeleev’s modern periodic table is seven (7).
9. What is the inert gas present in the second period of the periodic table?
Ans. Neon (Ne) is an inert gas present in the second period of the periodic table.
10. Which element is called a ‘rogue element’ by Mendeleev?
Ans. The hydrogen element was called a stray element by Mendeleev.
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