1.
_______ change can be reversed.
2.
Why a person painted his iron gate?
3.
The process in which bacteria and fungi decompose the dead bodies into simple components is called _______.
4.
When the flame develops during combustion reaction, then it is called _______.
5.
A change which results into a totally new material is called _______ change.
6.
The change that occurs on the iron due to the action of oxygen and water is called _______.
7.
The remains of dead organisms and waste matters disappear gradually through _______.
8.
The _______ develops during combustion reaction.
9.
The _______ change cannot be reversed.
10.
What type of change is it when metal expands on heating?
11.
When salt is dissolved in water, the water is
12.
Iron + oxygen = _______
13.
In a solution, the substance that dissolves a solute, and is in more quantity is called a _______.
14.
Which one is NOT a chemical change?
15.
In a solution, the substance that dissolves in liquid and is in less quantity is called a _______.
16.
There are _______ important components of solution.
17.
A change in which no new material is formed with different properties then such change is called a _______ change.
18.
A solution having minor quantity of solute is called _______ solution.
19.
Which factor will NOT affect the dissolving of sugar in water?
20.
The change of milk into yogurt is.
21.
A solution having major quantity of solute is called _______ solution.
22.
When salt is dissolved in water, the salt is ______
23.
To prevent iron from _______, its surface is painted with oil or chromium.
24.
The rate of dissolving salt in water can be increased by:
25.
The change in which both appearance and composition so substance or matter changes are called _______ change.
26.
When solid or liquid things put into water and its particles dissolves uniformly to form a mixture called _______.
27.
Burning of paper is a _______ change.
Please Write Your Comments