(English Medium) ICSE Class 9 - CISCE Question Bank Solutions

Select the odd one out and justify your answer.

Zn, Fe, Mg, and Na

Select the odd one out and justify your answer.

SO₂, H₂S, NH_3, and CO₃

Select the odd one out and justify your answer.

Fe, Zn, Cu and Mg

Select the odd one out and justify your answer.

Fe, Pb, Al and Zn 

Helium is preferred to hydrogen for filling balloons because it is:

Which metal gives hydrogen with all of the following: water, acids, alkalis?

Which of the following metals does not give hydrogen with acids?

Choose terms from the options given in brackets to complete this sentence.

Sodium ………………. reacts smoothly with cold water.

(metal, amalgam, in the molten state)

Correct the following statement:

Very dilute nitric acid reacts with iron to produce hydrogen.

Correct the following statement:

Conc. H₂SO₄ reacts with zinc to liberate hydrogen. 

What do you observe when dilute sulphuric acid is added to Zinc granules.

Define the term solute.

Define the term – solvent

Give a chemical test to distinguish between the following gases:

Hydrogen chloride and hydrogen sulphide

Using dilute sulphuric acid how would you differentiate between:

Copper and magnesium

How would you identify the gaseous products evolved.

Using dilute sulphuric acid how would you differentiate between:

Sodium sulphide and sodium carbonate.

How would you identify the gaseous products evolved.

Define the term solution.

State the characteristics of a true solution.

What is meant by the term ‘symbol’?

Name three metals whose symbols are derived from the first letter of the name of the element.