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Divyank Pandey 7 years, 1 month ago

As i was also enable to memorise but then i switch to videos on youtube and after studing from videos it is being able for me to memorise and face the chapter u should try edu mantra a channel on youtube he explains the chapters in such a simple way.Trust me it is superb.Hope it will help u

Ritu Jha 7 years, 1 month ago

And you should also learn Binomial nomenclature ..

Arya Yadav 7 years, 1 month ago

Thnx bro

Manju Mordhaya 7 years, 1 month ago

the diversity chapter is divided only into two groups..... Plant kingdom., Animal kingdom. First we have to learn about plant kingdom and it's all types and parts of this kingdom.... Then we have to learn about animal kingdom .... Animal kingdom is divided into three parts... 1.Non-chordates.. 2.Protochordates.. 3.chordates .... These are the types of only animal kingdom and it's each part carries very detail information.... We have to learn plant kingdom and it's all part also........

ANSWER

What is work energy therom

Posted by Ajay Kumar 7 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Atharv Khandelwal 7 years, 1 month ago

Work energy theorem is the derivation of kinetic energy's formula

ANSWER

A partical moves over three quarters of a circle of radius r of 7m. What is the magnitude of its distance covered.

Posted by Ff New Gamer 7 years, 1 month ago

CBSE > Class 09 > Science

0 answers

ANSWER

A baby is not able to tell her/his caretakers that she/he is sick. What would help us to find out that the baby is sick?

Posted by Prakash Choudhary 7 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Mohit Kumar 7 years, 1 month ago

If baby is crying or restless no matter.Whatever is done to ease him is no more than sick

ANSWER

Please give the cbse question paper of science 2018-19 for final examinations Last Date:-10/03/2019.

Posted by Gaurab Saikia 7 years, 1 month ago

CBSE > Class 09 > Science

0 answers

ANSWER

Factors affecting evaporation

Posted by Sahil Sabale 7 years, 1 month ago

CBSE > Class 09 > Science

3 answers

Banasri Subhasmita 7 years, 1 month ago

The factors affecting evaporation are 1. Temperature 2. Surface area 3. Wind speed 4. Humidity

Aakash Panchal 7 years, 1 month ago

It is a type of surface phenomina which is affected by cooling effect

Anurag Raj 7 years, 1 month ago

1.temperature 2.surface area 3.wind speed 4.heat supply 5.humidity

ANSWER

What is the si unit of wavelength

Posted by Vidhya Mali 7 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Mohit Kumar 7 years, 1 month ago

Metre

Ayushi Saxena 7 years, 1 month ago

Metre

ANSWER

How we can prove that the boiling point of alcohol is 78℃. What is this temperature on kelvin scale ? The ans is 351k

Posted by Swapnil Porwal 7 years, 1 month ago

CBSE > Class 09 > Science

3 answers

Jitender Jangid 7 years, 1 month ago

To convert celcius into Kelvin just add 273 into the given number

Abhyanand 7 years, 1 month ago

C-0/100=k-273/100 put the value and take the result

Mohit Talmale 7 years, 1 month ago

We can prove it by heating alchohol at 78°celcius

ANSWER

How the scientist have measured the speed of light

Posted by Sachin Sah 7 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Abhyanand 7 years, 1 month ago

By the method of 1light year

ANSWER

Law of work gravity

Posted by Mayank Vashisth 7 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Abhyanand 7 years, 1 month ago

Every object attract each other

ANSWER

9.72g of kcl dissolves in 30g of water at 70 ℃. Calculate the solubility of kcl at that temperature

Posted by Swapnil Porwal 7 years, 1 month ago

CBSE > Class 09 > Science

0 answers

ANSWER

Calculate the number of atom in 18 gm of water

Posted by Rahul Ostwal 7 years, 1 month ago

CBSE > Class 09 > Science

0 answers

ANSWER

Explain permanent tissue

Posted by Pratham Bhavsar 7 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Srishti Agarwal 7 years, 1 month ago

Tissues which lost their ability to divide and are kept to perform other functions are called permanent tissue.

ANSWER

Write a short note on organic farming

Posted by Kashif▄︻̷̿┻̿═━一 ?‌?‌?‌?‌?‌?‌ 7 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Abhyanand 7 years, 1 month ago

When a farmer use the cow drugs and manuar fertiliser then they grow plant is known the organic farming

ANSWER

Derive f=mv

Posted by Aamir Game 7 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Meghna Thapar 6 years, 1 month ago

The first law of motion can be mathematically stated from the mathematical expression for the second law of motion.

F = ma

F = m(v - u)/t

Ft = mv – mu

ANSWER

Chamistry

Posted by Shahill Bhusal 7 years, 1 month ago

CBSE > Class 09 > Science

0 answers

ANSWER

What are the differences between straited, smooth and cardiac muscles.

Posted by Sarwadny Bhosale 7 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Meghna Thapar 6 years, 1 month ago

Muscular tissues form the muscles in the body and are responsible for movement and locomotion. Muscle cells are elongated and are called muscle fibres. They are capable of contraction and relaxation. There are 3 types of muscular tissues:

Striated Muscles or Skeletal muscles - These are called skeletal muscles as they are found attached to the bones and help in the body movements. The cells are cylindrical, unbranched, striated and multi nucleated. They are involuntary in nature.
Non-Striated muscles or smooth muscles - The cells are spindle shaped, uni-nucleated, elongated and have no striations. They are found within the walls of elementary canal, bladder and blood vessels. They are involuntary in nature.
Cardiac Muscles - These are found exclusively in heart. They are cylindrical, non-tapering, branched with faint striations. They have one or two nuclei in each cell. They are involuntary. Their function is rhythmic contraction and relaxation throughout life.

ANSWER

Relation between action and reaction

Posted by Nupur Bhagwat 7 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Aakash Panchal 7 years, 1 month ago

Every action has an equal and opposite reaction

ANSWER

A bullet is fired against a window glass pane , makes a hole in it and it is not cracked , but the stone skrikes the same pane it gets smashed. Why is it so???

Posted by Sonalika P. 7 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Abhyanand 7 years, 1 month ago

the bullet is fired against a window pane makes a hole in it not cracked because the bullet is strikes on glass pane with high velocity but on the other hand when the stone strikes the pane is the low velocity thats cause same pane smashed by the stone

ANSWER

What is the utility of tissues in multicellular organisms..

Posted by Nehil Dubey 7 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Aakash Panchal 7 years, 1 month ago

Organ

ANSWER

What is pulse?

Posted by Namitha Shekar 7 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Aakash Panchal 7 years, 1 month ago

The beating rate of heart per sec

Nehil Dubey 7 years, 1 month ago

The definition of pulse is a rhythmic beating in the arteries caused by the beating of the heart... An example of the pulse is a throbbing beat heard at the wrist...

3Thank You

ANSWER

What is inflammation? please answer my question fast

Posted by Adarsh Dukare 7 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 7 years, 1 month ago

Inflammation is the response of a body tissue against any harmful pathogen, injury, irritation or wound. The signs of inflammation are swelling, pain, redness, heat etc. It is the first step of self protection provided by our immune system.

3Thank You

ANSWER

Erosion of topsoil disturbs the nitrogen cycle

Posted by Shivam Agrahari 7 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Adarsh Dukare 7 years, 1 month ago

the nitrogen enters in trees or plants only through soil.if the top soil get erosion orit has been eroted it would be difficult for nitrogen to enter the soil.as there will be no nitrogen in the plants the process of ammonification will stop.thus the erosion of topsoil disturbs nitrogen cycle.

ANSWER

a sound wave has a freqency 2hz and wavelength 40 how long will it take to travel 1.6 km

Posted by Vijay Rawat 7 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Tannu Bhardwaj 7 years, 1 month ago

Speed=frequency × wavelet V= 2×40 V=80m/s Distance(s)=1.6km=1600m s = v×t t=d/v t=1600/80 t=20sec

ANSWER

How do action and reaction forces help us to walk

Posted by Madhu Bala 7 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 7 years, 1 month ago

Friction supplies the support force which is necessary for a body to walk.
Friction is necessary for walking because as per Newton's third law of motion, (every action has an equal and opposite reaction), therefore, we can walk only if the ground we are walking on push our feet back with a force. Now, here friction comes into the picture and helps us by providing the necessary reaction force. As per the third law, the ground would definitely push our feet back but if we are walking on a perfectly smooth ground which has no friction our force would simply cancel out the force reverted by the ground and we would fall.

5Thank You

ANSWER

a baby is not able to tell his or her caretakers that she or he is sick . what would help us to find out that the baby is sick ?

Posted by Preet Walia 7 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Chitrali Gupta 7 years, 1 month ago

The caretaker will observe the baby and if the baby is sick or ill then the caretaker will get to know about it because the baby will surely have symptoms and when they will go to the doctor he will tell the caretaker about it....some observation are:baby will cry a lot ,he or she will not like to eat anything etc.

Sayoni Debnath 7 years, 1 month ago

I also have the same query

ANSWER

In an experiment to determine the boiling point of water, State the reason for the following: 1. Pumice stone pieces are added to water in the beaker 2. A glass stirrer is used.

Posted by Pradeepkumar Upadhyay 7 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Srishti Agarwal 7 years, 1 month ago

1. Pumic stones are added to boiling water to avoid bumping of water. 2. A glass stirrer is used to make the water stable everywhare in the glass .

ANSWER

Which part of plant cell store all the nutrients in plant body

Posted by Akash Kumar 7 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Mohit Talmale 7 years, 1 month ago

Golgi apparatus

Jay Joshi 5 years, 11 months ago

Sclerenchyma

3Thank You

ANSWER

What are 20 Element name?

Posted by Aman Mehta 7 years, 1 month ago

CBSE > Class 09 > Science

4 answers

Arya Yadav 7 years, 1 month ago

They are given in ncert..chap 4?

Aakash Panchal 7 years, 1 month ago

Hydrogen,helium ,lithium,beryllium,boron,carbon,nitrogen,oxygen,florine,neon,potassium,sodium,magnesium,calcium,plutonnium,aluminum,zinc,uranium,copper,gold,argon

Durgesh Kumar Singh 7 years, 1 month ago

Hydrogen Helium Lithium beryllium Boron carbon Nitrogen Oxygen today news aluminium Phosphorus and potassium calcium

Tejaswini Mohapatra 7 years, 1 month ago

Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminum Silicon Phosphorus Sulfur Chlorine Argon Potassium Calcium