Incorrect URL accessed!!!!

ANSWER

Explain about..... 1.Neutron 2.Proton 3.Electron

Posted by Ishita Garg 5 years, 9 months ago

CBSE > Class 09 > Science

2 answers

Prabhpreet Sardar 5 years, 9 months ago

Atoms are made of extremely tiny particles called protons, neutrons, and electrons. Protons and neutrons are in the center of the atom, making up the nucleus. Electrons surround the nucleus. Protons have a positive charge. ... Neutrons have no charge.

Mamta Rani 5 years, 9 months ago

What is air

ANSWER

Explain about nitrogen cycle

Posted by Ishita Garg 5 years, 9 months ago

CBSE > Class 09 > Science

1 answers

Prabhpreet Sardar 5 years, 9 months ago

The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted into multiple chemical forms as it circulates among atmosphere, terrestrial, and marine ecosystems. ... Important processes in the nitrogen cycle include fixation, ammonification, nitrification, and denitrification.

ANSWER

Which of the following compound having polyatomic ions NaoH, Na2CO3,CaSo4,Nacl

Posted by Anshika Kashyap 5 years, 9 months ago

CBSE > Class 09 > Science

1 answers

Mukesh Aggarwal 5 years, 9 months ago

NaoH,Na2CO3,CaSo4

ANSWER

What is sound and how is it produced

Posted by Aryan Singh 5 years, 9 months ago

CBSE > Class 09 > Science

3 answers

Prabhpreet Sardar 5 years, 9 months ago

Take one iron rod hit it on an another iron #The sound is produced and you can feel the vibration#.

Aman Jeet 5 years, 9 months ago

Sound is a form of energy which is produced due to the vibration of two object.

Aryan Singh 5 years, 9 months ago

The vibration of two object is produced sound

ANSWER

About tissue

Posted by Pranshu Learn 5 years, 9 months ago

CBSE > Class 09 > Science

3 answers

Dipanshu Bhatia 5 years, 9 months ago

A group of cells which do a specific function comes together and forms tissue.

Lucky Kumar 5 years, 9 months ago

A group of cells that performs a particular function is known as tissue

Deepak Daksh 5 years, 9 months ago

No.of cells which perform specific functions are called tissues.

ANSWER

What is the speed of scape velocity, it can increase or decrease?

Posted by Druti Mehra 5 years, 9 months ago

CBSE > Class 09 > Science

0 answers

ANSWER

When will the acceleration increase

Posted by Mega Biju 5 years, 9 months ago

CBSE > Class 09 > Science

4 answers

Sk Arif Hussain 5 years, 9 months ago

In class room

Dhruv Kumar 5 years, 9 months ago

What is reproduction

Ashish Sindhu 5 years, 9 months ago

When the object is move

Tanish Jassal 5 years, 9 months ago

When the velocity of object increase

ANSWER

What is sub atomic

Posted by Himanshu Sinha 5 years, 9 months ago

CBSE > Class 09 > Science

3 answers

Avinash Kumar 5 years, 9 months ago

Atoms have smaller particles in them which are called sub atomic. * ~《☆》~ * Three type of sub atomic particles of an atom ; (1)ELECTRON - negative change (2)PROTON - positive change (3)NEUTRON - no charge. *~《♤》~* •▪••▪•

A A 5 years, 9 months ago

In short sub atomic particles are those charges present in an atom i.e. proton,neutron and electron.

Yogita Ingle 5 years, 9 months ago

The limitations of Dalton’s atomic theory to explain certain observations formed the basis for the discovery of electrons and protons. Further investigations revealed the existence of neutrons. The components of atoms are called subatomic particles and generally include the proton, electron, and the neutron.

ANSWER

What is prokaryotes and eukaryotes and write the differences between them?

Posted by Shiva Kumar 5 years, 9 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 5 years, 9 months ago

	Prokaryotes	Eukaryotes
Type of Cell	Always unicellular	Unicellular and multi-cellular
Cell size	Ranges in size from 0.2 μm – 2.0 μm in diameter	Size ranges from 10 μm – 100 μm in diameter
Cell wall	Usually present; chemically complex in nature	When present, chemically simple in nature
Nucleus	Absent	Present
Ribosomes	Present. Smaller in size and spherical in shape	Present. Comparatively larger in size and linear in shape
DNA arrangement	Circular	Linear
Mitochondria	Absent	Present
Cytoplasm	Present, but cell organelles absent	Present, cell organelles present
Endoplasmic reticulum	Absent	Present
Plasmids	Present	Very rarely found in eukaryotes
Ribosome	Small ribosomes	Large ribosomes

ANSWER

Newtons law of gravitation on universal law of attraction.

Posted by Mehak Choudhary 5 years, 9 months ago

CBSE > Class 09 > Science

1 answers

Arjav Jain 5 years, 9 months ago

The Universal lae of gravitation states that tne the force of attraction between them: Is directly proportional to the product of their masses And, inversly proportional to the square of distabve between them

ANSWER

What is Quantum physics.

Posted by Dishant Kumar 5 years, 9 months ago

CBSE > Class 09 > Science

3 answers

Indrakumar Sahu 5 years, 9 months ago

Quantum physics state that before your looking there is nothing but when you look there at that time that thing are present

$Oh∆M Thite 5 years, 9 months ago

Study at atomic level.

Himanshu Sinha 5 years, 9 months ago

Means quantum small

ANSWER

ऊर्ज किसे कहते है

Posted by Kunal Jaiswal 5 years, 9 months ago

CBSE > Class 09 > Science

0 answers

ANSWER

GIVE. THE. DERIVATION. OF. KINETIC. ENERGY.

Posted by Amita Tomar 5 years, 9 months ago

CBSE > Class 09 > Science

3 answers

Indrakumar Sahu 5 years, 9 months ago

Let body is rest. u=0 , using third law of motion v²-u²= 2 as. V²= 2f/ms. 2mv²=kE

$Oh∆M Thite 5 years, 9 months ago

book

Karan Thakur 5 years, 9 months ago

ANSWER

WHAT. IS. WORK. AND. WHAT. IS. THE. SI. UNIT. IF. WORK

Posted by Amita Tomar 5 years, 9 months ago

CBSE > Class 09 > Science

7 answers

Rajneesh Payal 5 years, 9 months ago

Work is refers to the when the object is displace its place it is called work and its SI UNIT is joule

$Oh∆M Thite 5 years, 9 months ago

SI unit is joule orN/m( newton/meter)

$Oh∆M Thite 5 years, 9 months ago

Work is said to be done when applied force is in the direction of motion.

Tanish Jassal 5 years, 9 months ago

Work is done when the force in motion si unit joule

Nandini Sharma 5 years, 9 months ago

Work define is magnitude in the direction of force multiplied by the distance covered by object. Sl unit of work is joule . Formula of work =1 newton ×1 netre

Sakshi Mali 5 years, 9 months ago

SI unit of work is joule

Khusbhoo Kumari 5 years, 9 months ago

For doing work, energy is required Example: In animals, energy is supplied by food they eat. In machine, energy is supplied by fuel. And its S.I unit is Newton meter (Nm)

ANSWER

Plant cell vs animal cell

Posted by Malek Ilyas 5 years, 9 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 5 years, 9 months ago

Plant Cell	Animal Cell
Large, with a distinct outline.	Usually small, with a less distinct outline.
Cell wall is present. The cell membrane is surrounded by the cell wall.	Cell wall is absent.
Plastids are present.	Plastids are absent.
A large vacuole is present in the centre.	Vacuoles are absent; however, if present, they are small.
Centrosome is absent.	Centrosome is present.
Cytoplasm is not so dense.	Cytoplasm is denser and more granular and almost fills the entire cell.
Golgi apparatus has smaller units called dictyosomes.	Golgi apparatus is highly complex and prominent.

ANSWER

Compare the conclusion and observation of Rutherfords model

Posted by Srushti Borhade 5 years, 9 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 5 years, 9 months ago

Observations of Rutherford’s Alpha Scattering Experiment

The observations made by Rutherford led him to conclude that:

A major fraction of the α-particles bombarded towards the gold sheet passed through it without any deflection, and hence most of the space in an atom is empty.
Some of the α-particles were deflected by the gold sheet by very small angles, and hence the positive charge in an atom is not uniformly distributed. The positive charge in an atom is concentrated in a very small volume.
Very few of the α-particles were deflected back, that is only a few α-particles had nearly 180o angle of deflection. So the volume occupied by the positively charged particles in an atom is very small as compared to the total volume of an atom.

ANSWER

Who is the monitor of body

Posted by Abhay Choudhary 5 years, 9 months ago

CBSE > Class 09 > Science

2 answers

Rajneesh Payal 5 years, 9 months ago

Brain

Chandan Kumar 5 years, 9 months ago

Brain

ANSWER

Name the five kingdoms of kingdom plantae

Posted by Pramod Gowda B R 5 years, 9 months ago

CBSE > Class 09 > Science

4 answers

Girish Karhana 5 years, 9 months ago

Your answer is wrong 1Kingdons 2 Phylum(for animals)/Division(for plants) 3 Class 4 Order 5 Family 6 Genus 7 Species

Vaishali Raj 5 years, 9 months ago

Your question is correct and your answer is thallophyta, brayophyta, pteridophyta, gemnosperm, and angiosperm

3Thank You

Chandan Kumar 5 years, 9 months ago

Ptridophyta ,breophyta,gimnosperm, angiosperms, thallophyta

Sonakshi Bairoliya 5 years, 9 months ago

your question is wrong

3Thank You

ANSWER

Name the reproductive part in gymnosperms and angnosperms respectively

Posted by Pramod Gowda B R 5 years, 9 months ago

CBSE > Class 09 > Science

2 answers

Yogita Ingle 5 years, 9 months ago

Most gymnosperms have reproductive structures called cones which are unisexual. They produce two types of cones: male cones and female cones. Male cones produce pollen. Female cones contain at least one ovule at the base of each scale.

In angiosperms, flowers are the reproductive organs. They may be unisexual or bisexual.

Vaishali Raj 5 years, 9 months ago

The reproductive part of angiosperm is cotyledon

ANSWER

Why are bryophytes knoen as amphibian of plant kingdom

Posted by Pramod Gowda B R 5 years, 9 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 5 years, 9 months ago

Amphibians are those organisms which live on both land and in water. Bryophytes are called amphibians of the plant kingdom because these plants though live in soil but they need water for sexual reproduction. The sperm of bryophyte (antherozoids) are flagellate and need water to swim to the eggs. In other words, as these plants need water for reproduction unlike other plants, they are called as amphibians.

ANSWER

What is the difference between porifera and coelenterata?

Posted by Raj Mishra 5 years, 9 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 5 years, 9 months ago

Porifera:- The work porifera means organisms having holes. These are non motiles animals combined to some solid support. There are holes of ‘pores’, on the whole body. These causes a canal system that helps in circulating water throughout the body to bring in food and oxygen.

These animals are covered with a hard outside layer or skeleton. The body texture involves quite minimal differentiation and division into tissue. They are generally known as sponges, and are generally present iin marine habitats. Euplectelea, sycon and spongilla are some examples of porifera.

Coelenterata:- These are animals found in water. They show large body design differentiation. There is a cavity within the body. The body is formed of two layers of cells: one forms cells on the outside of the body, and the other forms the inner lining of the body.

Some of these species found in colonies (corals), whereas others have a solitary like – span (hydra).

Jellyfish and sea anemones are examples of Coelenterata.

ANSWER

What are contributory cause of disease

Posted by Vivek Singh 5 years, 9 months ago

CBSE > Class 09 > Science

2 answers

Chandan Kumar 5 years, 9 months ago

(a)Poor health due to lack of eating good nutritional food. (b) poor economic condition,prsonal hygiene,lack of cleanliness. (c)change in genetic condition and direct or indirect contact with diseased person which should be communicable disease.

Yogita Ingle 5 years, 9 months ago

Contributory causes of disease are :
(a) Poor health due to lack of good nourishment.
(b) Poor hygiene condition, economic condition due to which one does not get proper and sufficient food.
(c) Genetic difference which make some people more prone to disease than others.

ANSWER

If energy can neither be created nor be destroyed,then were the energy crises held ? ????

Posted by Anuj Joshi 5 years, 9 months ago

CBSE > Class 09 > Science

1 answers

Chandan Kumar 5 years, 9 months ago

Energy not crises but its speed get decreased.

ANSWER

WHAT IS MEAN BY HEALTH

Posted by Nagaraj Nagu 5 years, 9 months ago

CBSE > Class 09 > Science

5 answers

Chandan Kumar 5 years, 9 months ago

When a person is well bieng in the state of social condition,mental condition and physically fit.

Indian Gamer 5 years, 9 months ago

Health is a state of social ,mental and physical healthy well being

Abhishek Panda 5 years, 9 months ago

Health is a physical, social and mental well being of and individual.

Apsanarai Diwasrai 5 years, 9 months ago

Helth is wealth

Akshat Talwar 5 years, 9 months ago

Health is state of social,mental & physical well being.

ANSWER

what is meant by non unifrom velocity

Posted by Anmol Rai 5 years, 9 months ago

CBSE > Class 09 > Science

2 answers

Chandan Kumar 5 years, 9 months ago

When a object covers equal distance in unequal interval of time.

Yogita Ingle 5 years, 9 months ago

Non-uniform Velocity : When an object covers unequal distances in equal intervals of time in a specified direction, or if the direction of motion changes, it is said to be moving with a non-uniform or variable velocity. e.g., revolving fan at a constant speed has variable velocity.

ANSWER

SI unit of momentum

Posted by Pappu Das 5 years, 9 months ago

CBSE > Class 09 > Science

4 answers

Indian Gamer 5 years, 9 months ago

Kg m/s

Shrish Gupta 5 years, 9 months ago

Kg m/s

Suvarnakumar Km 5 years, 9 months ago

Sorry the correct answer is kg m/s

Suvarnakumar Km 5 years, 9 months ago

Newtonmetre / kg square

ANSWER

What is triploblastic in biology

Posted by Yadu Nandan 5 years, 9 months ago

CBSE > Class 09 > Science

2 answers

Archita Goel 5 years, 9 months ago

Organism made from three embryonic germ layers, that is, ectoderm, mesoderm and endoderm, are said to be triploblastic.

Sonakshi Bairoliya 5 years, 9 months ago

germ layer

ANSWER

What is the scientific name of alcohal

Posted by Sajid Ali 5 years, 9 months ago

CBSE > Class 09 > Science

3 answers

Apsanarai Diwasrai 5 years, 9 months ago

Rum

Saloni Kumari 5 years, 9 months ago

Ethanol

Sonakshi Bairoliya 5 years, 9 months ago

ethanol

ANSWER

What is FYM ?

Posted by Priya David 5 years, 9 months ago

CBSE > Class 09 > Science

3 answers

Saloni Kumari 5 years, 9 months ago

Farm yard manure

Yogita Ingle 5 years, 9 months ago

Farmyard manure (FYM): It is the decomposed mixture of cattle excreta (dung) and urine along with litter and leftover organic matter such as roughage or fodder. The waste materials are collected daily from the cattle shed and stored in a pit for decomposition by the microorganisms (bacteria and fungi etc.). FYM contains nitrogen, phosphorous and potassium.

Sajid Ali 5 years, 9 months ago

Farm yeard manure