ICSE CHEMISTRY CLASS 9 THE PERIODIC TABLE WORKSHEET 2

 

ICSE CHEMISTRY
ICSE  Class 9

ONLINE CLASS ON ZOOM

Join my Telegram channel for free pdf file ICSE CHEMISTRY CHANNEL

Contact 8897306498

Click here to Watch Chemical Bonding full lesson on youtube

The Period table – Worksheet 2

1. Transition metals are placed in  :

A) Group 1

B) Group 2

C) Group 3-12

D) Group 13-17

 

2. In the modern periodic table :

A) the elements are arranged in the increasing order of atomic number

B) vertical coloumns are called periods

C) horizontal rows are called Groups

D) elements are classified into 18 periods

 

3. Down the group in The Periodic Table:

A) the number of valence electrons increases by one unit

B) the number of valence electrons remains same

C) the number of electron shells does not change

D) the atomic number increases by one unit

 

4. Across a period from left to right in The Periodic Table:

A) the number of shells in the elements increases

B) non-metallic character decreases

C) metallic character increases

D) metallic character decrease and nonmetallic character increases

 

5. Which of the following statements in not true when you move down a group in The Periodic table?

A) The number of valence electrons remains same

B) The chemical properties remain same

C) The metallic character decreases

D) the number of electron shells increases by one unit

 

6. The correct increasing order of the number of electron shells:

A) Li, K, Na, Rb

B) Li, Na, K, Rb

C) Li, K, Rb, Na

D) Na, K, Li, Rb

 

7. The group number signifies

A) the atomic number of the element

B) number of electron shells

C) the valency of the element

D) the number of valence electrons

 

8. Which of the following metals does not belong to alkali metals?

A) Al

B) Li

C) Na

D) K

 

9. The collective name of the metals Be, Mg, Ca, Sr

A) alkali metals and belong to group 2

B) alkali metals and belong to  group 1

C) alkaline earth metals and belong to group 1

D) alkaline earth metals and belong to group 2

 

10. The halogens are F, Cl, Br, I and they belong to:

A) Group 1

B) Group 2

C) Group 17

D) Group 18

 

11. The pair elements which belong to different groups but have similar properties

A) Li and Mg

B) B and Si

C) Be and Al

D) all of the above and they called bridge elements

 

12. The most reactive nonmetals :

A) alkali metals

B) halogens

C) Noble gases

D) alkaline earth metals

 

13. Alkali metals are :

A) strong reducing agents

B) strong oxidizing agents

C) electro-negative in nature

D) both B and C

 

14. Which of the following names gives the meaning -‘salt producer’?

A) Hydrogen

B) Halogen

C) Oxygen

D) Nitrogen

 

15. The noble gas which does not have octet configuration:

A) Argon

B) Krypton

C) Helium

D) Neon

 

 

ICSE CLASS 10 CHEMISTRY WORK SHEETS

ICSE CHEMISTRY Sulphuric acid worksheet 1

SULPHURIC ACID
WORKSHEET 1

https://icsechemistry16.blogspot.com

a) Answer the following questions pertaining to the Contact process.

i) Name the acid prepared in this process.

ii) Name the mineral of Iron and Sulphur used to prepare Sulphur dioxide.

iii) Write the balanced equation for the catalytic oxidation reaction.

iv) Which gas is oxidized in the above reaction?

v) State any two conditions for the above reaction.

 

 

b) Sulphuric acid is dibasic acid and it produces _________________ salt and _____________ salt with bases.

c) Complete and balance the following:

i) Zn + H₂SO₄ ⟶ __________ + __________

ii) CuO + H₂SO₄⟶ __________ + __________

iii) Na₂S + H₂SO₄ ⟶ _________ + ___________

d) Choose the property from A, B, C, D and E shown by the Sulphuric acid in the following reactions/.

A) Non-volatile acid            B) Drying agent           C) Dehydrating agent   D) dil. Acid

E) Oxidizing agent.

 

i) H₂SO₄ + CuO ⟶ ________ + ___________

ii) Cu + H₂SO₄ ⟶ _________ + __________ + ___________

iii) NaCl + H₂SO₄ ⟶ __________ + ___________

e) Differentiate between i) dil HCl and dil. H₂SO₄

 

 

 

            ii) dil. HNO₃ and dil. H₂SO₄

 

 

f) State your observations, along with balanced equations, when Conc. H₂SO₄ is:

i) added to sugar crystals

 

 

 

ii) Blue Copper sulphate crystals