Download App

Structure of the Atom — Science STD 9 — Question

CBSE BoardEnglish MediumSTD 9ScienceStructure of the Atom1 Mark
MCQ
Which statement about atom is incorrect?
  • A
    Atoms are invisible
  • B
    All atoms have same number of protons and electrons
  • C
    Atoms are made up of subatomic particles
  • D
    It has mass
✓

Answer

  1. All atoms have same number of protons and electrons

Explanation:

Atoms are smallest particle of an element.

They consists of solid mass in the center known as the nucleus in which protons and neutrons are present.

Outside the nucleus, there are present electrons which keep up on revolving around it.

Thus the atom is not mostly the empty space.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q-[Che-1M]" from Structure of the Atom→Structure of the Atom — all question types→Science STD 9 question papers→CBSE Board STD 9 question papers→CBSE Board question paper generator→

Similar questions

One nm is equal to:
→
Which of the following factors are responsible for the change in state of solid carbon dioxide when kept exposed to air?
  1. Increase in pressure
  2. Increase in temperature
  3. Decrease in pressure
  4. Decrease in temperature
  1. (i) and (ii)
  2. (i) and (iii)
  3. (ii) and (iii)
  4. (ii) and (iv)
→
The presence of a significant number of charge carriers makes plasma as _____________?
→
How many hydrogen atoms are there in a water molecule?
→
Neon and chlorine have atomic numbers 10 and 17 respectively. Their valencies will be ______ and ______ respectively:
→
Which condition out of the following will increase the evaporation of water:
→
Name a technique used to separate.Carbon and sulphur:
→
When a mixture of iron powder and sulphur powder is heated strongly to form iron sulphide, then heat energy is:
  1. Released.
  2. First absorbed and then released.
  3. Absorbed.
  4. Neither absorbed nor released.
→
The elements which normally exist in the liquid state are:
→
Coolers are more effective in areas with ___________?
→