CBSE Class 9 Chemistry Revision Worksheet Set H

Read and download free pdf of CBSE Class 9 Chemistry Revision Worksheet Set H. Students and teachers of Class 9 Chemistry can get free printable Worksheets for Class 9 Chemistry in PDF format prepared as per the latest syllabus and examination pattern in your schools. Standard 9 students should practice questions and answers given here for Chemistry in Grade 9 which will help them to improve your knowledge of all important chapters and its topics. Students should also download free pdf of Class 9 Chemistry Worksheets prepared by school teachers as per the latest NCERT, CBSE, KVS books and syllabus issued this academic year and solve important problems provided here with solutions on daily basis to get more score in school exams and tests

Chemistry Worksheet for Class 9

Class 9 Chemistry students should refer to the following printable worksheet in Pdf in standard 9. This test paper with questions and answers for Grade 9 Chemistry will be very useful for exams and help you to score good marks

Class 9 Chemistry Worksheet Pdf


CBSE Class 9 Chemistry Worksheet - Revision (5)

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One mark each:

1.Define atomic mass unit?

2.Define Mole?

3.An atom has electronic configuration of 2, 8, 7

(1)What is the atomic number of the element?

(2)Which of the following elements have same number of valence electrons

N(7), F(9), P(15), Ar(18)

4.Why are He, Ne and Ar are Inert?

5.Why are all electrons called fundamental particles of all atoms?

6.Calculate the value of moles in 17g of H2O2.[(H =1u), O =16u]

7.What is meant by Avogadro ‘s constant?

8.State Law of conservation of mass.

9.Calculate the number of molecules in 4g of methane (C=12u, H =1u)

10.What are isotopes? Give examples.

2 marks each:

11.What is the electronic configuration of Na+,if atomic No, of Na atom is 11.What is the atomic No. and atomic mass of Na+ .

12.Which of the two would be chemically more reactive element ‘X’ of atomic No.18 or element ‘Z’ of atomic No. 16 and why?

13.What is the difference between sodium atom and sodium ion?

14.How many molecules are present in

(a) 9g of water (b) 17g of NH3 .

(H = 1u, O = 16u, N =14u)

15.Calcium and Oxygen are combined in the rates of 5:4 by mass to form calcium oxide. What mass of oxygen gas would be required to react with 2.5g of calcium?

16.How many atoms of carbon and hydrogen are present in 3 moles of ethane

( C2 H6 ).

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