Q.1. Textbook activity question 1] Write the molecular formulae of oxides of the following elements by referring to the Mendeleev’s periodic Na, Si, Ca, C, Rb, P, Ba, Cl, Sn, Ca Element Molecular formula Element Molecular formula Na Na2O P P2O5 Si SiO2 Ba BaO Ca CaO Cl Cl2O7 C CO2 Sn SnO2 Rb […]
Author: P H Dhakne
MCQ on 10 science part -1 Topic-2 periodic Classification of elements MCQ
1 ) Elements are classified as …………… A ) Metals B ) Non-metals C ) Metalloids D ) All of the above Ans D ) All of the above 2 ) Which is odd among the following ? A ) Li B ) Sr C ) K D ) Na Ans B ) Sr 3 […]
10th science part-2 topic -1 heredity and evolution mcq.
1 )The diagram provides.. A ) Morphological Evidences B ) Anatomical Evidances C ) Outward evidences D ) Appearable evidences Ans B ) Anatomical Evidances 2 ) Different theories about origin and evolution of life have been proposed till today of which theory of ……………is accepted. A ) Theory of Human creation B ) Darwin’s […]
MCQ solutions for Science and Technology Part 1 chapter 5 – Heat
1) The heat energy absorbed at constant temperature by unit mass of a solid to convert into liquid is called…………… . A ) Specific latent heat of fusion B ) Specific latent heat of vaporization Ans A ) Specific latent heat of fusion 2 ) Different substances have different melting points but same boiling points. […]
Best MCQ On Topic-8 Cell Biology & Biotechnology. 10th Science And Technology Part -2
1]Cell Biology and Biotechnology
2]Cell Biology (Cytology
3] stem cell
4] biotechnology and its application
5] important stages in development of agriculture
7th Std topic 1 Living world : Adaptation and Classification : objective and question and answer.
7th Std topic 1 Living world : Adaptation and Classification :
Class 10 Science &Tech. Part 1 Chapter 1 Gravitation
Points Of Topic 1] Gravitation 2]Circular motion and centripetal force
3] Kepler’s laws 4] Newton’s universal law of gravitation
5] Acceleration due to the gravitational force of the Earth
6] Free fall
7] Escape velocity
7th std Topic -1 Living world adaptation and their classification part-1,2,3,4,5.
7th science topic 3 Adapation in plants and animals
Chemistry radicles : Acidic radicle and Basic Radicale
Acid radical:The ion formed after removal of Hydrogen ion (H⁺ ion) from an acid is called acid radical.Ex: When HCl loses H⁺ ion, it forms Cl⁻ which is an acid radical. Basic radical:- The ion formed after removal of hydroxide ions (OH⁻ ions) from a base is called basic radical.Ex: When NaOH loses OH⁻ ion, it […]
Natural Resource – Air, Water and Land Topic -1 Part -1st
All things on the earth are associated with air, water and land. Air is called atmosphere, water is called Hydrosphere and land is called Lithosphere. BIOSPHERE: living things and the parts of the lithosphere, hydrosphere and atmosphere which they occupy are together called the biosphere. These spheres have formed on the earth naturally. Natural resources […]
You must be logged in to post a comment.