Dalton's Atomic Theory

Q.

What are the merits of Dalton’s atomic theory?

1. Explains the laws of chemical combination

2. Distinguishes between atoms and molecules

3. Explains the laws of chemical combination and distinguishes between atoms and molecules

4. Discovered that electrons are embedded in the positively charged sphere

Q.

Which of the following are in accordance with Dalton’s atomic theory?

1. Atoms are indestructible

2. Atoms are divisible

3. Atoms are indivisible

4. Atoms are indivisible and indestructible

Q. Which of the following is/are the incorrect postulate(s) of the Dalton's atomic theory?

I) An atom is the smallest particle and is indivisible.
II) Atoms of all elements are identical.
III) Atoms can neither be created nor be destroyed.

1. Only I
2. Only III
3. Both II and III
4. Only II

Q.

Which theory has provided an explanation for the law of conservation of mass and the law of definite proportions?

1. Both law of conservation of mass and constant proportion.

2. Avagadro law

3. law of constant proportion

4. law of conservation of mass

Q. Assertion: The discovery of sub-atomic particles led to the failure of Dalton’s atomic theory.
Reason: An atom is made up of protons, neutrons and electrons.

1. Assertion and reason are correct, but Reason is not the correct explanation

2. Assertion and reason both are wrong

3. Assertion and reason are correct, and Reason is the correct explanation

4. Assertion is wrong, but the reason is correct

Q.

According to the scientist Dalton, the element that has the following symbol for representation is

___

Q. According to Dalton atomic theory, atoms are divisible particles and can be created in a chemical reaction.

1. True
2. False

Q. Different elements have atoms with identical mass and same chemical properties.

1. True
2. False

Q. According to Dalton's atomic theory, atoms are indivisible particles.

1. False
2. True

Q.

What are the merits of Dalton’s atomic theory?

1. Explains the laws of chemical combination

2. Distinguishes between atoms and molecules

3. Explains the laws of chemical combination and distinguishes between atoms and molecules

4. Discovered that electrons are embedded in the positively charged sphere