Unit - 4.1 Structure of an Atom - ICSE STD 8 CHEMISTRY Questions - Vidyadip

Question types

Unit - 4.1 Structure of an Atom question types

28 questions across 8 question groups — pick any mix to generate a CHEMISTRY paper with step-by-step answer keys.

28

Questions

8

Question groups

5

Question types

[1 Mark Question Answer]

[2 Mark Question Answer]

[3 Mark Question Answer]

[5 Mark Question Answer]

Fill in the blanks.

MCQ

TRUE / FALSE

Match The Following.

Sample Questions

Unit - 4.1 Structure of an Atom questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1[1 Mark Question Answer]1 Mark

State any four observations made by Rutherford, in bombarding gold foil with alpha particles.

View full solution →

Q 2[1 Mark Question Answer]1 Mark

Write the correct statements :
The core of an atom is called its center.

View full solution →

Q 3[1 Mark Question Answer]1 Mark

Write the correct statements :
The mass of neutron is equal to the hydrogen atom and it is positively charged.

View full solution →

Q 4[1 Mark Question Answer]1 Mark

Write the correct statements :
The electrons in the outermost orbit of an atom are called bound electrons.

View full solution →

Q 5[1 Mark Question Answer]1 Mark

Write the correct statements :
A proton is 1/1837 times heavier than an electron.

View full solution →

Q 6[2 Mark Question Answer]2 Marks

How is an atom electrically stable ?

View full solution →

Q 7[2 Mark Question Answer]2 Marks

What are (a) bound electrons (b) valence electrons ?

View full solution →

Q 8[2 Mark Question Answer]2 Marks

What do you understand by the following terms:
(a) atomic number,
(b) mass number?

View full solution →

Q 9[3 Mark Question Answer]3 Marks

State any three conclusions regarding the nucleus of an atom.

View full solution →

Q 10[3 Mark Question Answer]3 Marks

Name the nucleons present within the nucleus of an atom and state their mass and charge

View full solution →

Q 11[5 Mark Question Answer]4 Marks

State five main assumptions of Dalton's atomic theory of matter.

View full solution →

Q 12Fill in the blanks.1 Mark

The mass of an electron is $1 / 1837$ times than mass of one atom of _______________.

View full solution →

Q 13Fill in the blanks.1 Mark

According to Maharishi kanad, the tiniest of the tiny particle of a pure substance is called _______________.

View full solution →

Q 14Fill in the blanks.1 Mark

The electrons in the outermost orbit of an atom are called _______________. electrons.

View full solution →

Q 15Fill in the blanks.1 Mark

The fixed paths along which the electrons revolve around the nucleus are called _______________.

View full solution →

Q 16Fill in the blanks.1 Mark

According to JJ Thomson's model of atom, the electrons are embedded in a thinly spread _______________ charged sphere of protons.

View full solution →

Q 17MCQ1 Mark

The alpha particles used by Rutherford for bombarding the gold foil

A
have a mass of 2 amu charge ±4
✓
have a mass of 4 amu charge ±2
C
have a mass of 4 amu charge ±4
D
have a mass of 1 amu charge ±1

Answer: B.

View full solution →

Q 18MCQ1 Mark

The electrons in the outermost orbit of an atom are held very weakly by the nucleus and are called

✓
lose electrons
B
weak electrons
C
valence electrons
D
none of these

Answer: A.

View full solution →

Q 19MCQ1 Mark

The mass of an atom is due to the assembly

A
protons
B
neutrons
C
protons and electrons
✓
protons and neutrons

Answer: D.

View full solution →

Q 20MCQ1 Mark

Nucleons are

A
protons only
B
neutrons only
✓
protons and neutrons
D
protons and electrons

Answer: C.

View full solution →

Q 21MCQ1 Mark

Which one of the following proposed atomic theory of matter?

✓
John Dalton
B
J.J. Thomson
C
Rutherford
D
Niels Bohr

Answer: A.

View full solution →

Q 22TRUE / FALSE1 Mark

The electrons in the shell close to the nucleus are called bound electrons.

View full solution →

Q 23TRUE / FALSE1 Mark

The electron as an integral part of all kinds of atom of different elements was discovered by Rutherford.

View full solution →

Q 24TRUE / FALSE1 Mark

Paramanu is made up of two or more anus.

View full solution →

Q 25TRUE / FALSE1 Mark

Proton is a positively charged particle having a negligible mass.

View full solution →

Q 26TRUE / FALSE1 Mark

The core of an atom is called nucleus.

View full solution →

Q 27Match The Following.4 Marks

Column A	Column B
1. A positively charged particle within the nucleus of an atom.	(a) Nucleons
2. The name of electrons in the outermost orbit.	(b)Electron
3. An assembly of protons and neutrons within the nucleus of an atom	(c)Neutron
4. An almost weightless particle in an atom which is negatively charged.	(d)Proton
	(e)Valence electrons

View full solution →

Browse all question groups ↑

Generate a Unit - 4.1 Structure of an Atom paper free

Pick question groups from the list above, set marks and difficulty, and export a branded PDF with step-by-step answer keys. First 3 chapters free — no signup.

Generate Paper Free All CHEMISTRY chapters