12th Standard CBSE Syllabus & Materials

12th Standard CBSE

CBSE 12th Economics Government Budget and the Economy Previous year Question Papers Study Material - QB365 Set A

NEW

12th Standard CBSE

CBSE 12th Computer Science Interface Python with MySQL - New Previous year Question Papers Study Material - QB365 Set A

NEW

12th Standard CBSE

CBSE 12th Computer Science Database Concept - New Previous year Question Papers Study Material - QB365 Set A

NEW

12th Standard CBSE

CBSE 12th Computer Science Data Communication - New Previous year Question Papers Study Material - QB365 Set A

NEW

12th Standard CBSE

CBSE 12th Computer Science Data Structures - New Previous year Question Papers Study Material - QB365 Set A

NEW

12th Standard CBSE

CBSE 12th Computer Science Functions - New Previous year Question Papers Study Material - QB365 Set A

CBSE 12th Standard Biology Subject Environmental Issues HOT Questions 1 Marks Questions With Solution 2021

Published on: 29/05/2021

QB365 Provides the HOT Question Papers for Class 12 Biology, and also provide the detail solution for each and every HOT Questions. HOT Questions will help to get more idea about question pattern in every exams and also will help to get more marks in Exams

Download CBSE Class 12th Standard CBSE Biology question papers, sample papers, important questions, and previous year solved papers in PDF format. Get free study materials, NCERT solutions, and exam preparation resources for Class 12th Standard CBSE Biology

Questions + Answers key

Take MCQ Biology Test

QB365 Student Learing Managemnet System

Std: 12th Standard CBSE - Biology

chapter: - HOT Questions

Visit QB365-SLMS - https://www.qb365.in/slms/ Complete Questions and Answers

Questions:

1 Marks

5 x 1 = 5

Why does deforestation lead to loss of biodiversity?

Through auto fuel policy, Euro II norms, the government of india has laid out a road map to cut down the vehicular air pollution in many cities of india.what this norms stipulated?

Regions with high endemism are chosen as hot spots. Why?

Why Western Ghats in India have been declared as biological hot spots?

What photochemical oxidant pollute air?

Visit QB365-SLMS - https://www.qb365.in/slms/

Answers Key:

1 Marks

5 x 1 = 5

()
It is due to destruction of habitat of many wild animals.

()
Euro II norms stipulates that sulphur be controlled at 350 ppm in diesel and 150 ppm in petrol.aromatic hydrocarbons are to be contained at 42 percent of the concerned fuel.according to the road map,is to reduce sulphur to 50ppm in petrol and diesel and bring down the level to 35 percent.

()
Hot spots are the regions with high endemism. The endemic species are mostly rare, and its crucial to conserve them. Hence, the areas with high endemism are chosen as hot spots and given high protection.