| List - I(Block/group in periodic table) | List - II(Element) |
|---|---|
| (A) Lanthanoid | (I) Ce |
| (B) d-block element | (II) As |
| (C) p-block element | (III) Cs |
| (D) s-block element | (IV) Mn |
Based on their positions in the periodic table:
Therefore, the correct answer is (3): A-I, B-IV, C-II, D-III.
Which of the following Statements are NOT true about the periodic table?
A. The properties of elements are a function of atomic weights.
B. The properties of elements are a function of atomic numbers.
C. Elements having similar outer electronic configuration are arranged in the same period.
D. An element's location reflects the quantum numbers of the last filled orbital.
E. The number of elements in a period is the same as the number of atomic orbitals available in the energy level that is being filled.
Match List-I with List-II:
Match the LIST-I with LIST-II.
| LIST-I | LIST-II | ||
| A. | Pnicogen (group 15) | I. | Ts |
| B. | Chalcogen (group 16) | II. | Og |
| C. | Halogen (group 17) | III. | Lv |
| D. | Noble gas (group 18) | IV. | Mc |
Choose the correct answer from the options given below :
A sphere of radius R is cut from a larger solid sphere of radius 2R as shown in the figure. The ratio of the moment of inertia of the smaller sphere to that of the rest part of the sphere about the Y-axis is : 
A constant voltage of 50 V is maintained between the points A and B of the circuit shown in the figure. The current through the branch CD of the circuit is :
The current passing through the battery in the given circuit, is: 
Given below are two statements:
Statement I: The primary source of energy in an ecosystem is solar energy.
Statement II: The rate of production of organic matter during photosynthesis in an ecosystem is called net primary productivity (NPP).
In light of the above statements, choose the most appropriate answer from the options given below: