State Board K-12 (All Classes) Private Session 2025-26 Free Open Access

Microbes in human welfare

1.curd also known as lactobacillus or lactic acid bacteria(LAB) with high nutritional quality by increasing vitamin B12. 2.large holes in Swiss cheese are due to production of a large amount of CO2...

Curriculum State Board
Applicable Grade K-12 (All Classes)
Medium English & Hindi
Resource Format Chapter Q&A / PDF

Textbook Solutions & Academic Guide

Verified chapter-wise solutions, answers, and study notes

Curriculum & Exam Preparation Note: Regular practice of NCERT textbook exercises and chapter-end questions establishes strong conceptual clarity for primary and secondary examinations.

1.curd also known as lactobacillus or lactic acid bacteria(LAB) with high nutritional quality by increasing vitamin B12.

2.large holes in Swiss cheese are due to production of a large amount of CO2 by bacteria named ????????????????? ?????????.

3.camemcert cheese(soft) - penicillium camemberti

4.Roquefort cheese( semi-hard) -penicillium Roqueforti

5.Baker's yeast- Saccharomyces cerevisiae.

6.'Toddy' prepared from sap of palms by fermentation.

7.yeast fermentation are
a) Beer- produced from hordeum vulgare and alcohal content is 3-6%
b) Wine - from grapes and alcohol amount is 10-20%
c) brands - distillation of wine and alcohol amount is 60-70%
d) Tum prodced from molasses of sugarcane and alcohol amount is 40%

8.penicillin was the first antibiotic by ????????? ???????.

  1. The bottle juice was cleared by ????????? ??? ????????.
  2. Streptokinase (by Bacterium streptococcus)- clot buster

11.Cyclosporin A ( by fungus trichiderma polysporum) - immunosuppressive agent

12.Statins (by yeast monascus purpureus) - blood cholesterol lowering agent.

13.????????????- those biological agents that are used for control of weeds, insects,pathogens by viruses, bacteria, fungi, protozoa

  1. ????????????? used as biological agents are in the genus nucleopolyhedrovirus.
  2. ??????????????- organisms that are enrich the nutrient quality of soil by bacteria, fungi, cyanobacteria.

16 .in ???(?????) ??? - ???????(50-70%), ??2(30-40%), ?????? ?? ????????, ????????, ???????? ????????.

NCERT Solutions for All Classes (1 to 12)

Jump to free NCERT solutions, chapter Q&A, and textbooks for any grade

Popular Reference Solutions & Help Books

Step-by-step solutions for Mathematics and Science reference textbooks

Latest School & Board Updates

Real-time date sheets, admit cards, syllabus revisions, and exam notifications

Haryana Board Senior Secondary (12th) 20 Feb 2025
HBSE 12th 2024 Question Papers
View
Haryana Board Secondary (10th) 20 Feb 2025
HBSE 10th 2024 Question Papers
View
Haryana Board Senior Secondary (12th) 19 Feb 2025
HBSE 9th Model Papers 2025
View
Haryana Board Senior Secondary (12th) 19 Feb 2025
HBSE 11th Model Papers 2025
View
State Board Primary (1-5) 15 Feb 2025
BHU SET 2025 Application Form
View

Frequently Asked Questions

Common queries regarding NCERT textbook solutions & school curriculum

Are these NCERT solutions available 100% free of charge?

Yes. All NCERT solutions, chapter questions, textbook exercises, and download guides published on IndCareer Schools are completely free for students, parents, and educators without requiring any paid subscription or login.

Which subjects are covered for this class?

For Class 1, comprehensive NCERT solutions are provided for Mathematics (Math-Magic / गणित का जादू), English (Marigold & Mridang), and Hindi (Rimjhim / रिमझिम), alongside printable worksheets and textbook PDF downloads.

Are these solutions updated according to the latest CBSE / NCERT guidelines?

Yes. Our academic editorial team continually aligns all solutions and textbook references with the latest National Education Policy (NEP) and the rationalized curriculum issued by NCERT and the Central Board of Secondary Education (CBSE).

How can I download the official NCERT books in PDF format?

You can access official NCERT textbooks by clicking on the textbook links provided in the study content section above or by visiting the Class 1 to 12 NCERT Directory on IndCareer Schools.