ICSE ICSE Class 8 - CISCE Question Bank Solutions for Chemistry

Tick the most appropriate answer.

Which of the following is used as a coolant in nuclear reactor?

1. liquid sodium
2. liquid nitrogen
3. cadmium steel rods
4. plutonium

What do you observe when dilute sulphuric acid is added to granulated zinc?

What do you observe when a few pieces of iron are dropped in a blue solution of copper sulphate?

What do you observe when silver nitrate is added to a solution of sodium chloride?

What do you observe when ferrous sulphate solution is added to an aqueous solution of sodium hydroxide.

TRUE \ FALSE

Uranium-235 and uranium-238 both undergo nuclear fission.

WRITE SHORT ANSWER

What is the central part of an atom known as?

ANSWER IN DETAIL

What are the various components of a nuclear power plant?

ANSWER IN DETAIL

How are radioactive radiations useful in medicines ?

Hydrogen burns with a ______ flame and ______ sound is heard.

Fill in the blank

 Oxidation is the removal of ......................and addition of ....................

Fill in the blank

In redox reaction oxidation and reduction occur ............................

Indicate which of the following statement is true and which is false:

The removal of hydrogen from a substance is called reduction.

Fill in the blank

When a piece of copper is added to silver nitrate solution, it turns ............in colour.

Name the following:

The process in which oxygen is added or hydrogen is removed.

What is meant by Unsaturated.

What is meant by Saturated .

What is meant by Supersaturated solutions.

How will you obtain Magnesium oxide from magnesium.

Also give balanced equations for the reactions

How will you obtain  Silver chloride from silver nitrate.

Also give balanced equations for the reactions