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WorksheetsOnline objective test
Total questions: 10
Worksheet time: 12mins
……………………… is the absolute scale of temperature of the body
0° C
273 K
0 K
If a substance is heated or cooled, the change in mass of that substance is …………………………
positive
negative
zero
none of the above
Zn + CuSO4 --------> ZnSO4 + Cu is a…………………….
Decomposition reaction
Combination reaction
Single Displacement reaction
Double Displacement reaction
According to Charle’s law, at constant temperature, the volume of a gas is directly proportional to the temperature of the gas.
True
False
Thermolysis is a decomposition reaction caused by…………………………..
Heat
Electricity
Light
Mechanical energy
What is the normal pH value of Human saliva?...........
6.5 to 7.5
7 to 7.5
5.5 to 6
Sugarcane requires alkaline soil.
True
False
Double displacement reaction is also known as ………………………. Reaction.
(a)
A single displacement reaction is represented by X + CuSO4 -------> XSO4 + Cu
Which of the following could be X?
Ag
Au
Fe
The pH of a solution is 3. It’s [H+] concentration is ……………………..
1 X 10-3 M
3 M
1 X 10-11 M
