1.
Which of the following is used as evidence of fixed composition?
2.
Why do noble gases not form molecules easily?
3.
In a chemical reaction, atoms:
4.
Which is NOT a part of Law of Conservation of Mass?
5.
Which scientist verified the Law of Constant Composition?
6.
Water always contains hydrogen and oxygen in:
7.
Which of the following contains two atoms?
8.
Which form of matter has variable mass composition?
9.
Which law is basis for balanced chemical equations?
10.
Which of the following is a diatomic molecule?
11.
Which statement supports Avogadro’s hypothesis?
12.
Which of the following proves that atoms are not created or destroyed in reactions?
13.
In which state does Avogadro’s law apply?
14.
Law of Constant Composition is also known as:
15.
Berzelius Hypothesis deals with:
16.
The Law of Conservation of Mass was proposed in which year?
17.
Noble gases exist as:
18.
Which of the following is a mixture?
19.
Which of the following always has fixed chemical formula?
20.
Who proposed the Law of Conservation of Mass?
21.
Which statement is correct regarding a pure compound?
22.
Atoms of non-reactive elements are called:
23.
Which is an example of a mixture with variable composition?
24.
Which of the following exists as a triatomic molecule?
25.
Avogadro proposed his hypothesis in which year?
26.
Who proposed the Law of Constant Composition?
27.
A molecule is defined as:
28.
The chemical formula of ozone indicates that it contains:
29.
Which law is applicable only to pure compounds?
30.
The law that states “equal volumes of gases under same conditions contain equal molecules” is:
31.
Who is called the Father of Modern Chemistry?
32.
How many atoms are present in one molecule of CO₂?
33.
Which statement best describes a molecule?
34.
Dalton’s atomic theory is supported by which law?
35.
A pure chemical compound always contains elements:
36.
Who introduced the term molecule?
37.
Avogadro’s Law states that equal volumes of gases contain:
38.
The smallest particle of an element that takes part in a chemical reaction is:
39.
Which part of matter contains only one type of atoms?
40.
Which one is an example of a pure compound?
41.
Which among the following is NOT a compound?
42.
Berzelius is known for:
43.
Avogadro’s Law applies to:
44.
According to the Law of Conservation of Mass:
45.
Which of the following best supports Berzelius’ contribution?
