Class 10 Science Chapter 5 MCQ
Class 10 Science Chapter 5 MCQ (Multiple Choice Questions) of Periodic Classification of Elements. Revise all the chapter here in the form of MCQ Online tests. All the MCQs are taken from NCERT books only and answer as well as explanation are given below each question.After completing the chapter from textbooks, these MCQs are very helpful for the preparation of school tests and final board exams.
Class 10 Science Chapter 5 MCQ for 2020-2021
|Chapter: 5||Multiple Choice Questions (MCQ) Tests|
Class 10 Science Chapter 5 MCQ with Answers
MCQ tests practice for class 10 science is given below. Here, you can practice chapter 5 of class 10 science with important MCQs related to NCERT Textbook. Class 10 Science Chapter 5 MCQs are given below with answers and explanation.
Lavish appeared in class test but he confused to know the correct statement. Would you help him to know that?
Newlands’ law of octaves for the classification of elements had the following limitations. Choose the correct limitation:
While working on the classification of elements, a Russian scientist Mendeleev found different things. Choose the correct one(s):
Which of the following elements does not lose an electron easily?
Pooja is writing some statements but she confused to know whether the statements are correct or not? If you know the answer to this question, then tell her:
Which of the given elements A, B, C, D and E with atomic number 2, 3, 7, 10 and 30 respectively belong to the same period?
In Mendeleev’s Periodic Table, gaps were left for the elements to be discovered later. Which of the following elements found a place in the periodic table later?
Rahul is writing some statements about “Periodic Table”. Choose the correct one(s):
why did Mendeléev select Oxygen and Hydrogen to test the chemical properties of elements?
Mendeléev selected hydrogen and oxygen to test the chemical properties of elements as they are very reactive and formed compounds with most elements.
What were the limitations of Mendeleev’s Periodic Law?
1. Isotopes of all elements posed a challenge to Mendeleev’s Periodic Law.
2. The atomic masses do not increase in a regular manner in going from one element to the next. So it was not possible to predict how many elements could be discovered between two elements — especially when we consider the heavier elements.
3. No proper place assigned to Hydrogen.
What is modern periodic law?
The modern periodic law states that Properties of elements are a periodic function of their atomic number.
What happen to atomic radius of atoms when we move from left to right in a period?
The atomic radius decreases in moving from left to right along a period. This is due to an increase in nuclear charge which tends to pull the electrons closer to the nucleus and reduces the size of the atom.
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