CBSE > Class 09 > Science | CBSE Board | Homework Help

due to weak intermolecular force of attraction the space between particles is large enough and due to this, it becomes easier for a diver to cut through water in a swimming pool.

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Sonakshi Rohilla 2 years, 5 months ago

Because of the matter is not continuous, but it is made up of particles which have vacant spaces b/w them

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Why the cell is called the functional unit of life

Posted by Tazeen Arif 2 years, 5 months ago

CBSE > Class 09 > Science

1 answers

Ayush Pratap 2 years, 5 months ago

Because , cell is a basic structural ,functional and fundamental unit of life

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Why does the electron does not fall in the nucleus?

Posted by Vatsal Vijay 2 years, 5 months ago

CBSE > Class 09 > Science

1 answers

Kartik Thakur 2 years, 5 months ago

atoms are in a very very called environment, QM prohibits electrons from falling to the nucleus.

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Write the uses of diamond

Posted by Maithili Pardhi 2 years, 5 months ago

CBSE > Class 09 > Science

3 answers

Ayush Kushwah 2 years, 4 months ago

Diamond are used to make jewellery

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Rohit Kumar 2 years, 5 months ago

1.Dimond are used to make jewellery 📿 2.Dimond are also used to make medicine 💊 3.Diamond are also used to make windows because dimond membrane are very durable and resistance of heat and abrasion are transparent 🪟

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T.G T.G 2 years, 5 months ago

To cut rocks To make rings or jewellery

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What is peristalsis

Posted by Simran Bhargav 2 years, 5 months ago

CBSE > Class 09 > Science

1 answers

Kartik Thakur 2 years, 5 months ago

Peristalsis is a series of wave-like muscle contractions that move food through the digestive tract

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Why cell is called as fundamental unit of life

Posted by Ankit Bhuyan 2 years, 5 months ago

CBSE > Class 09 > Science

3 answers

Shivam Saroj 2 years, 5 months ago

Explain how the human ear works

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Awantika Negi 2 years, 5 months ago

Because we know that the cell are the microscopic unit of life which help us to work

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Simran Bhargav 2 years, 5 months ago

Cell is called the fundamental unit of life because it is the basic unit of an organism and all other functions are performed by the help of cell. It is also because cell is responsible for the further perpetuation of life

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Learning outcomes of chapter The fundamental unit of life

Posted by Hirva Sakariya 2 years, 5 months ago

CBSE > Class 09 > Science

1 answers

Rohit Kumar 2 years, 5 months ago

The fundamental unit of life is cell

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What is mean by diffusion

Posted by Vibha Narwade 2 years, 5 months ago

CBSE > Class 09 > Science

2 answers

Ankit Bhuyan 2 years, 5 months ago

The movement of gas particles from higher concentrations to lower concentrations

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Mudit Jain 2 years, 5 months ago

The movement of particles of hig concentration to lower concentrations region

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Ch 1 matter in our surroundings ques_ the mass per unit volume of a substance is called density (density =mass/volume) arrange the following in order of increasing density_air, exhaust,from chimney s, honey, water, chalk, cotton and iron.

Posted by Vaishnavi Kumari 2 years, 5 months ago

CBSE > Class 09 > Science

2 answers

Sonakshi Rohilla 2 years, 5 months ago

Air<exhaust from chimneys <cotton<water<honey<chalk <iron

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Bhoop Singh 2 years, 5 months ago

Question number 9science

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Environment and sustainability

Posted by Adhrika Krishna 2 years, 5 months ago

CBSE > Class 09 > Science

1 answers

Kartik Thakur 2 years, 5 months ago

Environment consist of less resources that's why Environmental sustainability is the ability to maintain an ecological balance in our planet's natural environment and conserve natural resources to support the wellbeing of current and future generations

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What is molecular mass of C6H12O6

Posted by Nilesh Ghodke 2 years, 5 months ago

CBSE > Class 09 > Science

2 answers

Akhyan Bhoi 2 years, 5 months ago

Its round up figure mass is 180

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Madhu Prajapati 2 years, 5 months ago

It consists of an aldehyde group and six carbon atoms. The molecular formula for the same is C6H12O6. It is generally available as white power. The exact molecular mass of glucose is 180.156 g/mol.

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Which animal tissue acts as a protective tissue of animals body ?

Posted by Nilesh Ghodke 2 years, 5 months ago

CBSE > Class 09 > Science

2 answers

Madhu Prajapati 2 years, 5 months ago

Epithelial tissue is a protective tissue present in the animal body.

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Nilesh Ghodke 2 years, 5 months ago

Epithelial

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Notes on lysosomes

Posted by Chhavi Yadav 2 years, 5 months ago

CBSE > Class 09 > Science

2 answers

Sonakshi Rohilla 2 years, 5 months ago

Lysosomes are dark spherical single membrane bound *** containing several digestive enzymes lysosomes are found by Golgi complex they are found in the cytoplasm of eukaryotic cells most in animal cell

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Seema Choudhary 2 years, 5 months ago

A lysosomes is a membrane bound cell organelle that contains digestive enzymes

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What is Matter ? In easy and explained way

Posted by Utkarsh Yadav 2 years, 5 months ago

CBSE > Class 09 > Science

5 answers

Mudit Jain 2 years, 5 months ago

Matter is made up of matter and occupies space is called matter

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Akhyan Bhoi 2 years, 5 months ago

Anything have mass and occupaies space is called matter Ex- water, ice, vapour

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आनंद कुमार आनंद कुमार 2 years, 5 months ago

Anything which has occupied space and mass is called matter. e.g. =Air,water,oxygen,

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Manav Pandya 2 years, 5 months ago

Anything which has occupied space and mass is called Matter example 1. Solid 2. Liquid 3. Gas

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Zoya Mehboob 2 years, 5 months ago

Anything which has occupied space that is called Matter like for example water , air, desk,pencil etc .

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Two school of thought prevailed regarding the nature of matter one school belived matter to be continously like a block of wood whereas,the other thought that matter was made up of particles like sand

Posted by Anshika Kumari 2 years, 5 months ago

CBSE > Class 09 > Science

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Gjgzgj

Posted by Monika Singh 2 years, 5 months ago

CBSE > Class 09 > Science

3 answers

Account Deleted 2 years, 4 months ago

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Ayush Pratap 2 years, 5 months ago

Same to you

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Kartik Thakur 2 years, 5 months ago

Maderchod

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Give reason for the following observations: The smell of hot sizzling food reaches you several metres away,but to get the smell from cold food you have to go close.

Posted by Priyanginee Gogoi 2 years, 5 months ago

CBSE > Class 09 > Science

3 answers

Mudit Jain 2 years, 5 months ago

Because of diffusion

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Anindya Gantait 2 years, 5 months ago

It is because the when the temperature rises, the kinetic energy of the particles is high, whereas in low temperature (cold) the kinetic energy of the particles not so high. That is why the smell of hot sizzling food reaches you several metres away,but to get the smell from cold food you have to go close. As the kinetic energy increases, The particles move freely i.e. in gaseous form which mixes with air and reaches us. This process is also called diffusion

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Tanishka Jhamb 2 years, 5 months ago

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The function of xylem and phloem

Posted by Anuj Bharti 2 years, 5 months ago

CBSE > Class 09 > Science

3 answers

Aman Kushwaha 2 years, 5 months ago

The xylem distributes water and dissolved minerals upward through the plant, from the roots to the leaves. The phloem carries food downward from the leaves to the roots.

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Mahesh Chandrakar 2 years, 5 months ago

जी

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Nikunj Bhakhna 2 years, 5 months ago

Answer

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What is difference between isobars argon and calcium

Posted by Manual . 2 years, 5 months ago

CBSE > Class 09 > Science