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What are the enzymes present in the stomach of ruminants animals to digest cellulose ?

Posted by Jay Hansda 7 years, 3 months ago

CBSE > Class 09 > Science

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What are the Features of Monera and protista?

Posted by Chahal Chandiok 7 years, 3 months ago

CBSE > Class 09 > Science

3 answers

Vanshika Tyagi 7 years, 3 months ago

Monera : 1) Monera is the single cell called prokaryotic organism like bacteria,blue green algae and mycroplasma. 2)Mode of nutrition is autotropic or hetrotrophic. 3) These organism are prokaryotic it means ,they do not have a definite nucleus and lack all cell organism. 4) Some of organism all wall (bacteria and blue green algae) while otherlack cell wall. Protista : 1) This kingdom include unicellular organism ,diatons and protozoa. 2) The organism in this kingdom are unicellular, eukaryotic organism. 3) Mode of nutrition either autotrophic or hetrotrophic. 4) Some protist bear hair like cilia or whip like flagella. Example - amoeba, paramecium, euglena, etc.

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Chahal Chandiok 7 years, 3 months ago

What does this mean?

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Aditi Jain 7 years, 3 months ago

Their in t.b

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If z=3 what would be the valency of the element also name the element

Posted by Vidhi Shah 7 years, 3 months ago

CBSE > Class 09 > Science

2 answers

Pawan Kumar 7 years, 3 months ago

Valency would be 1 & name of the element is LITHIUM

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Aditi Jain 7 years, 3 months ago

Zinc

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What is the relation between one kilowatt hour and joule

Posted by Kavin Thangam 7 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 7 years, 3 months ago

The commercial unit of electric energy is kilowatt hour (kW h), commonly known as ‘unit’.
1 kW h = 1000 watt × 3600 second
= 3.6 × 10⁶ watt second
= 3.6 × 10⁶ joule (J).

The kilowatt-hour (symbolized kWh) is a unit of energy equivalent to one kilowatt (1 kW) of power expended for one hour (1 h) of time.

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Feso4.7h2o what is the name of this formula

Posted by Shivam Maheshwari 7 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Aditya Benson 7 years, 3 months ago

Ferrous sulfate heptahydrate

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How to reproduce in human

Posted by Mohd Wasim Bahubali 7 years, 3 months ago

CBSE > Class 09 > Science

0 answers

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Friends plz ask me chemistry questions

Posted by Aanchal Jaiswal 7 years, 3 months ago

CBSE > Class 09 > Science

4 answers

Aanchal Jaiswal 7 years, 3 months ago

300-273= 27

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Ekam Ekam 7 years, 3 months ago

300+273"=573

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Ekam Ekam 7 years, 3 months ago

Solute is iodine and solvent is alcohol

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Sreya Sailesh 7 years, 3 months ago

•How will you seperate nitrogen from air? •Identify the solute and solvent in tincture of iodine. •Write any two applications of chromatography. •Convert 300K to °C.

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How many metal

Posted by Raushan Kumar 7 years, 3 months ago

CBSE > Class 09 > Science

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A 8000 kg engine pulls a train of wagons each of 2000 kg, along a horizontal track. If the engine exerts a force of 40000 n and the trackboffers a friction force of 5000 n. Than calculate A. The net accelerating force and B. The acceleration of the train

Posted by Raghav Maheshwari 7 years, 3 months ago

CBSE > Class 09 > Science

2 answers

Prabhakar Priyanshu 7 years, 3 months ago

Net force=35000N Net acceleration= 35000/no.of wagons×2000

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Nitesh Sharma 5 years, 11 months ago

Bshsvsvye dusvwcakz8scgs

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An object is been thrown from a ground to a certain height is there displacement taken

Posted by Himanshu Oza 7 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Aditi Jain 7 years, 3 months ago

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For how much time should the force of 400N be exerted of mass 8kg to increase its velocity from 150m/s to 300m/s?

Posted by Asma Bagwan 7 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Aditi Jain 7 years, 3 months ago

220n

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1 hp is equals to how many watt?

Posted by Sachin Danosi 7 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Raghav Maheshwari 7 years, 3 months ago

746 watt

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Derivation of recoil of gun

Posted by Raghav Maheshwari 7 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 7 years, 3 months ago

Recoil velocity is the backward velocity experienced by a shooter when one shoots a bullet. Due to the recoil velocity the shooter experiences a backward jerk. The recoil velocity is the result of conservation of linear momentum of the system. In fact every projection system experiences a recoil velocity whether it is gun, crossbow, bow and arrow, rocket launchers.
Initial momentum of the system including the gun and the bullet = 0
Final momentum of the system = momentum of the gun + momentum of the bullet = Mv₁+ mv (v is the recoil velocity of the gun)
Applying conservation of linear momentum,
0 = Mv₁ + mv
Implies, v₁ = -(mv)/M
The negative sign indicates that the direction of velocity of the gun is opposite to the direction of velocity of the bullet.

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An object has moved through a distance. Can it have zero displacement?

Posted by Raghav Maheshwari 7 years, 3 months ago

CBSE > Class 09 > Science

2 answers

Yogita Ingle 7 years, 3 months ago

The displacement of the body can be zero if after travelling a certain distance it comes back to its original or intial position. For Example :- Suppose a athlete runs from a point A to point B towards north and the road connecting point A and B is straight. The distance between A and B is 10m. The athlete first goes from point A to B towards north and returns. Then the total displacement will be = 10 m towards north - 10 m towards south = 0 m.
Suppose a person throws a ball upwards through height h and catches back he ball.
Then, Distance covered by the ball = h + h = 2h
Displacement of the ball = 0.

3Thank You

Priyanshu Singh 7 years, 3 months ago

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What is one pascal

Posted by Abhinav Goyal 7 years, 3 months ago

CBSE > Class 09 > Science

3 answers

Yogita Ingle 7 years, 3 months ago

Pascal is the SI unit of pressure. It is equivalent to pressure exerted when 1 Newton of force is applied over an area of 1 squared meter. It is named after the French polymath Blaise Pascal. One pascal is the pressure exerted by a force of magnitude one newton perpendicularly upon an area of one square metre.

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Priyanshu Singh 7 years, 3 months ago

N/m2

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Kunal Katwal 7 years, 3 months ago

1×10-5 bar

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Compute the number of ions present in 5.85g of sodium clhoride

Posted by Nakul Mundada 7 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Jayavel Arumugam 7 years, 3 months ago

1/100 =0.01 ions

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State two factors on which the gravitational force between two objects depend

Posted by Shubham 22 7 years, 3 months ago

CBSE > Class 09 > Science

0 answers

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Explain the working of human ear?

Posted by Mayur Patil 7 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Aanchal Jaiswal 7 years, 3 months ago

The outer ear is called pinna, it collects the sound from surrounding. The collected sound passes through the auditory canal. At the end of the auditory canal, there is a thin membrane. Called the ear drum or tympanic membrane. When a compression of the medium reaches the eardrum the pressure on the outside of the membrane. Increases and force the eardrum moves outwaed when a rarefaction. Reaches it in this way, the eardrum vibrates bones ( the hammer, anvil, and stirrup) in this middle ear. The middle ear transmits the amplified pressure variations are turned into electrical signals by the cochlea. These electrical signals are sent to the brain via the auditory nerve and the brain interprets then as sound....

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How is smog formed?

Posted by Manmohan Singh 7 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Jayavel Arumugam 7 years, 3 months ago

Tyndal effect

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State law of constant proportion with example

Posted by Akshitha Narang 7 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Shivam Yadav 7 years, 3 months ago

A chemical compound always consist of the same elements combined together in the same proportion by mass. For example, water is a compound which always consist of the se two elements , hydrogen and oxygen, combined together in the same constant proportion of 1:8 by mass.

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Diffrence between prokeriokic and eukereotic cell

Posted by Vansh Kumar 7 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Aanchal Jaiswal 7 years, 3 months ago

Prokaryotic cell:- (1) generally small (1-10hm) 1Hm= 10-6m (2) Nuclear region is well not define and surrounded and known as Prokaryotic cell. (3) chromosome single (4) membrane - bound cell organelles absent.. Eukaryotic :- (1) size:- generally large (5-100 Hm) (2) Nuclear region well define and surrounded by a nuclear membrane. (3) More than one chromosome (4) membrane bound cell organelles present...

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Protista kingdom

Posted by Anurag Shukla 7 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Aanchal Jaiswal 7 years, 3 months ago

PROTISTA PHYLLUM :- (1) Member of this phyllum are Eukaryotic. (2) unicellular. (3)Lomcomotion organs are present in the member of this phyllum. EX:- (1) Celia in paramoecium (2) flagella in Euglena. (4) Autotrophs or heterotrops.

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Is it possible to shield a body from gravitational field

Posted by Akshaj Verma 7 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Kunal Katwal 7 years, 3 months ago

Yes

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A body of mass 2kg is thrown vertically upward with initial velocity of 20m/s and at same time another object fall downward direction through a height 10m. When and where these objects will meet.

Posted by Radhika Kumari 7 years, 3 months ago

CBSE > Class 09 > Science

0 answers

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By what factor does kinetic energy of a body increase when its speed doubled.

Posted by Radhika Kumari 7 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 7 years, 3 months ago

KE = 1/2 m v² [ KE = Kinetic energy
v = velocity ]
So when speed or velocity of the body is doubled the Kinetic energy changes by 2²= 4 times.

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who r democritus and leucippus ??

Posted by Sangita Ankita 7 years, 3 months ago

CBSE > Class 09 > Science

0 answers

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what is polyatomic molecule

Posted by Sangita Ankita 7 years, 3 months ago

CBSE > Class 09 > Science

2 answers

Aanchal Jaiswal 7 years, 3 months ago

Ex:- O3, P4, S8

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Vanshika Tyagi 7 years, 3 months ago

When the molecules contain more than three atom are called polyatomic molecules.

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who is berzelius

Posted by Sangita Ankita 7 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Harsh Raj 7 years, 3 months ago

Berzelius, was a Swedish chemist. Berzelius is considered, along with Robert Boyle, John Dalton, and Antoine Lavoisier, to be one of the founders of modern chemistry.

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To determine the density of solid by using a spring balance and a measuring cylinder

Posted by Adarsh Gupta 7 years, 3 months ago

CBSE > Class 09 > Science