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What is the property of synthetic fibers?

Posted by Shweta Singh 7 years, 7 months ago

CBSE > Class 08 > Science

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What is the property of synthetic fibre

Posted by Shweta Singh 7 years, 7 months ago

CBSE > Class 08 > Science

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What are pubic hairs

Posted by Adarsh Jawale 7 years, 7 months ago

CBSE > Class 08 > Science

0 answers

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Who invented kaleidoscope

Posted by Srinidhi T.K 7 years, 7 months ago

CBSE > Class 08 > Science

1 answers

Anchita Jain 7 years, 7 months ago

Sir Dravid Brewster

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What are harmful effects of microorganisms and use ful

Posted by Paul Mane 7 years, 7 months ago

CBSE > Class 08 > Science

1 answers

Yogita Ingle 7 years, 7 months ago

Harmful effects of microorganisms:
Bacteria: Causes various diseases such as typhoid, diarrhea, and cholera.
Fungi: Causes a large number of diseases in plants and in animals such as rust diseases in plants, fruit rot in apple, red rot in sugar cane and ring worm disease in human beings.
Algae: Algal boom in water (rapid growth of algae) causes poisonous effect after they die, which in turn results in the death of aquatic organisms.
Protozoa: Causes Amoebic dysentery, pyorrhoea and sleeping sickness etc.
Virus: Cause small fox, common cold, influenza, herpes, hepatitis, polio and rabies.
Useful effects of microorganisms
Bacteria: In industries, they are needed to make curd, cheese, vinegar, lactic acid, alcohol and even in ripening of tea leaves, etc.
Fungi: Some useful fungi are yeast, used to make dough in bakery and alcohol etc. Some fungi are useful for preparing antibiotics. Some mushrooms which are useful in making vitamins and organic acids.
Algae: Some useful algae are chlorella (produce protein and vitamin), red algae (agar) and brown algae (Iodine and potassium).
Protozoa: Some help in the final degradation of waste and sewage while some are symbiotic in nature.
Virus: They are used for scientific research such as in biotechnology, genetic engineering, gene therapy and for making antibiotics etc.

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give few examples of fertilizers

Posted by Manohar Vishwakarma 7 years, 7 months ago

CBSE > Class 08 > Science

3 answers

Krishnaansh Viz 7 years, 7 months ago

Npk. Nitrogen, phosphorus, potassium

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Uzair Ahmed 7 years, 7 months ago

Npk

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Adarsh Jawale 7 years, 7 months ago

Potassium nitratre nitrogen

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Science holiday homework paper

Posted by Girdhari Singh Jodha 7 years, 7 months ago

CBSE > Class 08 > Science

1 answers

Poonam Patil 7 years, 7 months ago

Can u help me in doing science hhw

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What is biology?

Posted by Little Master 2005 7 years, 7 months ago

CBSE > Class 08 > Science

3 answers

Odi Sambit 7 years, 7 months ago

The study on nature is called biology

1Thank You

Amarjeet Kumar 7 years, 7 months ago

Biology is branches of science that involves study of life and living organisms including their physical structure, and chemical composition, function, development and evaluation. Modern biology has a many branches

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Little Master 2005 7 years, 7 months ago

The branch of science which studies the Liviing world is called biology

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write difference between nylon and rayon

Posted by Mohan Negi 7 years, 7 months ago

CBSE > Class 08 > Science

1 answers

Saurabh Gangwar 7 years, 7 months ago

jcifuv

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What is crop plants

Posted by Deepanshi Kaushik 7 years, 7 months ago

CBSE > Class 08 > Science

2 answers

Poonam Patil 7 years, 7 months ago

Same type of plants are grown in a same lane on a large scale

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Little Master 2005 7 years, 7 months ago

The same type of plants grown on the same piece of land is called crop plant

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What is rhizombus

Posted by Shagufta Bhat 7 years, 7 months ago

CBSE > Class 08 > Science

1 answers

Anshika Aggarwal 7 years, 7 months ago

It is a nitrogen fixing bacteria lives in root nodules of leguminous plant

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Why a fountain pen burst in an aeroplane but our blood vessels do not

Posted by Puja Gupta 7 years, 7 months ago

CBSE > Class 08 > Science

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what is nitrification

Posted by Shashwat Jain 7 years, 7 months ago

CBSE > Class 08 > Science

2 answers

Uzair Ahmed 7 years, 7 months ago

It is the process in which ammonia is converted in nitrate and nitrite.

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Shubhi Verma 7 years, 7 months ago

Nitrification is a biologyical oxidation in which of ammonia and ammonium to nitrate followed by the oxidation of the nitrite to nitrate

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Why handle of screw driver is not made up of metal ?

Posted by Sneha Bansal 7 years, 7 months ago

CBSE > Class 08 > Science

2 answers

Uzair Ahmed 7 years, 7 months ago

Because it conduct electricity

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Rock Bhavani 7 years, 7 months ago

Because it is also uses as tester and when we use it as tester then non metal material gives the security of electric shock

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The medium of growth for plants is Water Cell Soil Air

Posted by Janhvi Yadav 7 years, 7 months ago

CBSE > Class 08 > Science

1 answers

Tushar Gusain 7 years, 7 months ago

Soil

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What is mean by alchol

Posted by Vignesh Kumar 7 years, 7 months ago

CBSE > Class 08 > Science

1 answers

Little Master 2005 7 years, 7 months ago

The fermented liquid which is made by fermented fruits is called alcohol

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name two chash crop

Posted by Vicky Giri 7 years, 7 months ago

CBSE > Class 08 > Science

1 answers

Yogita Ingle 7 years, 7 months ago

Cash crops are grown for direct sale in the market, rather than for family consumption or to feed livestock. Coffee, cocoa, tea, sugarcane, cotton, and spices are some examples of cash crops.

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An object completes 900 oscillations in 30 seconds. Calculate it's frequency

Posted by Sahil Kosambia 7 years, 7 months ago

CBSE > Class 08 > Science