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Suraiya
Poll
Suraiya
Asked: December 3, 2021In: Class 10 Science

The observations can be explained by the phenomenon of:

When the sulphur particles begin to form a colloidal solution is formed in the glass tank due to which short wavelength of light are scattered by the minute colloidal sulphur particles.

class 10 science mcq solutionsclass 10th science cbsc sample paper
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Shashikala
Poll
Shashikala
Asked: December 2, 2021In: Class 10 Science

Select the incorrect statement about the covid-19 disease:

CORONA-19 is a respiratory disease as it mainly affects the lungs. It is transmitted from an infected person mostly by respiratory droplets released into the air when an infected person sneezes or coughs directly without covering his mouth or nose. ...

class 10 science mcq solutionsclass 10th science cbsc sample paper
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Shivam Saini
Poll
Shivam Saini
Asked: December 2, 2021In: Class 10 Science

When about 200 g of sodium thiosulphate (hypo) is dissolved in about 2 L of clean water taken in the tank and about 1 to 2 ml of concentrated sulphuric acid is added to the water, it is observed that:

We will find fine microscopic sulphur particles precipitating in about 2 and 3 minutes due to the reaction between sulphuric acid sodium thiosulphate.

class 10 science mcq solutionsclass 10th science cbsc sample paper
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Samira Joshi
Poll
Samira Joshi
Asked: December 1, 2021In: Class 10 Science

What happens when calcium is treated with water?

(i) it does not react with water (ii) it reacts violently with water (iii) it reacts less violently with water (iv) bubbles of hydrogen gas formed stick to the surface of calcium

  • 1 1 Answer
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sunaina
sunaina
Asked: October 8, 2021In: Class 12 Biology

Justify the pitcher plant as a producer

Class 12 Science Important Syllabus Questions Answers Class XII Science Biology Extra Questions Class 12th Biology Sample paper Questions Class 12 Biology Extra Questions Answers

class 12 science biology solutionsclass 12th science session 2021-2022
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Ramaiya
Ramaiya
Asked: October 8, 2021In: Class 12 Biology

Under what conditions would a particular stage in the process of succession revert back to an earlier stage?

Class 12 Science Important Syllabus Questions Answers Class XII Science Biology Extra Questions Class 12th Biology Sample paper Questions Class 12th Science Session 2021-2022

class 12 science biology solutionsclass 12th science session 2021-2022
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Janvi Sinha
Janvi Sinha
Asked: October 8, 2021In: Class 12 Biology

Name an omnivore which occurs in both grazing food chain and the decomposer food chain.

Class 12 Science Important Syllabus Questions Answers Class XII Science Biology Extra Questions Class 12th Biology Sample paper Questions Class 12 Biology Extra Questions Answers

class 12 science biology solutionsclass 12th science session 2021-2022
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Janvi Sinha
Janvi Sinha
Asked: October 8, 2021In: Class 12 Biology

Arrange the following as you observe in vertical stratification of a forest-Grass, Shrubby plants, Teak, Amaranths.

Class 12 Science Biology Important Questions 12th Science Biology Extra Questions Class 12th Science Session 2021-2022 12th Science Biology Questions Answers

class 12 science biology solutionsclass 12th science session 2021-2022
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