10th History Important MCQ Solutions Class 10th Social Science history Session 2022-23 10th History CBSC MCQ QUESTIONS ANSWERS Class X Social Science MCQ Extra important Questions Answers
Category: Class 10 Science
NCERT Solutions for Class 10 Science and important questions for CBSE class 10 for session 2020-2021
Discussion Forum Latest Questions
Class 10th Social Science Session 2022-23 Class 10 Social Science Terminal Exams MCQ Solutions Class X Social Science MCQ Extra Questions Answers 10th Social Science Terminal Exam Based MCQ Extra Questions
(i) Non-biodegradable biological in origin. wastes are (ii) Biodegradable wastes are degraded by microorganisms such as bacteria and fungi. (iii) Biodegradable wastes enter the food chain and get biologically magnified. (iv)Non-biodegradable absorbed by plants from the soil. wastes are
Red light being of longest wavelength scatters least and reaches our eye while blue colour scatters most.
DDT is a non-bio degradable pesticide and when sprayed, it finds its way to soil from where it enters the food chain, the concentration of DDT increases progressively as we go up the trophic level due to biological magnification.