Dalton Atomic Theory

Q. According to J.J Thomson, the atom can be divided into its subatomic particles i.e., electrons, protons and neutrons.

1. True
2. False

Q.

Dalton stated that "Atoms are indivisible" which was later proved correct by J.J Thomson.

1. True

2. False

Q.

Name the Indian sage who first propounded the idea of atom (anu).

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

1. Atoms are indivisible and indestructible
2. Atoms are indestructible
3. Atoms are divisible
4. Atoms are indivisible

Q.

Name the scientists who were responsible for the following scientific development:
The theory is that all substances are composed of tiny, structureless hard indestructible particles.

Q. According to Dalton's atomic theory, matter is made up of indivisible particles called atoms.

1. True
2. False

Q. Which of the following are the postulates of Dalton's atomic theory?

1. Atoms cannot be subdivided, created or destroyed.
2. Atoms of same element are similar in shape and mass.
3. Elements are made of extremely small particles called atoms.
4. Atoms contain mostly empty space.

Q.

Thomson compared atoms to a watermelon.

1. False

2. True

Q.

Thomson's atomic model can be compared to

1. Ripened guava

2. Mango

3. Cucumber
4. Orange

Q.

According to Dalton, atoms are indivisible.

1. True
2. False

Q. According to Dalton's atomic theory, ___ is the smallest indivisible particle in a matter.

1. atom
2. electron
3. molecule
4. compound

Q. ________ proposed that an atom can neither be created nor be destroyed.

1. J. J. Thomson
2. Neils Bohr
3. John Dalton
4. Ernest Rutherford

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.

The word atom comes from the word "$atomos$". Who coined this word?

1. Democritus

2. John Dalton

3. Antoine Lavoisier

4. J.J Thompson

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. Both assertion and reason are correct, and reason is the correct explanation.
3. Assertion and reason, both are wrong.
4. Assertion is wrong, but the reason is correct.

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

1. True
2. False

Q.

According to Dalton, different types of matter exists due to the different types of ___ constituting them.

1. molecules

2. compounds

3. elements

4. atoms