Download App

Periodic Classification of Elements — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10SciencePeriodic Classification of Elements1 Mark
MCQ
How many periods and groups are present in the periodic table?
  • ✓
    $7$ periods and $18$ groups.
  • B
    $8$ periods and $7$ groups.
  • C
    $7$ periods and $7$ groups.
  • D
    $8$ periods and $8$ groups.
✓

Answer

Correct option: A.
$7$ periods and $18$ groups.
Modern periodic table consists of $7$ horizontal rows known as periods and $18$ vertical columns named as groups.

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" from Periodic Classification of Elements→Periodic Classification of Elements — all question types→Science STD 10 question papers→CBSE Board STD 10 question papers→CBSE Board question paper generator→

Similar questions

Which of the following metals exist in their native state in nature?
  1. $\ce{Cu}$
  2. $\ce{Au}$
  3. $\ce{Zn}$
  4. $\ce{Ag}$
→
If a spherical lens has a power of $, -0.25D,$ the focal length of this lens will be :
→
A perfecting reflecting mirror has an area of $1 \mathrm{~cm}^{2}$. Light energy is allowed to fall on it for an hour at the rate of $10 \mathrm{~cm}^{-2}$. The force that acts on the mirror is :
→
Plaster of Paris is made from :
→
The oxygen liberated during photosynthesis by green plants comes from :
→
From the list given below pick the item that is not a natural resource :
→
Rays from Sun converge at a point $15\ cm$ in front of a concave mirror. Where should an object be placed so that size of its image is equal to the size of the object?
→
The underactive endocrine gland which causes goitre is :
→
Which is represented by the electric current :
→
Breathing is controlled by which part of the brain ?
→