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What is the advantage of LED in testing current through liquid

Posted by Hemanshu Kumar 7 years ago

CBSE > Class 08 > Science

1 answers

Richa Shree 7 years ago

It can identify weak current in the circuit.

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ANSWER

How can you contribute to the maintenance of green wealth of your locality?

Posted by I Am The Best 7 years ago

CBSE > Class 08 > Science

1 answers

Nirmala Sharma 7 years ago

1.planting trees in our locality. 2.water them regularly. 3.take care of them. 4.the existing plant should be properly nourished 5.encouraging awareness amon the people the importance of growing plants. Hope it will you

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ANSWER

*** determination in the unborn baby

Posted by Jiya Patel 7 years ago

CBSE > Class 08 > Science

1 answers

I Am The Best 7 years ago

By XX or XY chromosomes,we can determine the *** of unborn child

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ANSWER

A nail is hammered on a wooden plank what will happen and why

Posted by Sowparnika A 7 years ago

CBSE > Class 08 > Science

1 answers

I Am The Best 7 years ago

The nail will result in change of its shape due to hammer

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ANSWER

Calculate the number of images formed by a plane mirrors kept on an angle of 10 and 60 to each other

Posted by Ritika Ritu 7 years ago

CBSE > Class 08 > Science

1 answers

Yuvi Grover 7 years ago

10° = (360/10 ) - 1= 35 60° = (360/60) - 1 = 3

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ANSWER

Why ameoba changes its shape

Posted by Priyanshu Raj 7 years ago

CBSE > Class 08 > Science

5 answers

Himanshu Garg 7 years ago

By Binnary fussion

0Thank You

Yuvi Grover 7 years ago

It changes its shape for engulfing food anf for water

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I Am The Best 7 years ago

It changes its shape through pseudopodia in order to move and capture food

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Om Kumar 7 years ago

For captures the food and it's help in moving.

0Thank You

Hemanshu Kumar 7 years ago

By binary fission

1Thank You

ANSWER

How to find time period

Posted by Ritika Ritu 7 years ago

CBSE > Class 08 > Science

5 answers

Yuvi Grover 7 years ago

Time period = No. of Osscilations/frequecy

0Thank You

Satyabrat Mohapatra 7 years ago

Time period = time taken × ( no. of oscillations)^-1

1Thank You

I Am The Best 7 years ago

Time period = time taken ÷ no. of oscillations

0Thank You

Hemanshu Kumar 7 years ago

Time piriod=time taken/no. Of osillation

1Thank You

Birender Singh Bhati 7 years ago

Total time divede by total no . Of osccilation

3Thank You

ANSWER

What is plough ?

Posted by Srijan Kumar 7 years ago

CBSE > Class 08 > Science

2 answers

Upasna Gautam 7 years ago

It is a tool ... used for ploughing......???

0Thank You

Shivam Gaitonde 7 years ago

It is a tool uses for ploughing , removing weeds (its definition is in chapter 1)

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ANSWER

Unit of frequency

Posted by Birender Singh Bhati 7 years ago

CBSE > Class 08 > Science

6 answers

Upasna Gautam 7 years ago

Hertz ( hz )

0Thank You

I Am The Best 7 years ago

Hertz (hz)

0Thank You

Aswathnarayan Dwaraknath 7 years ago

Hertz(Hz)

0Thank You

Harsh Rohilla 7 years ago

Hertz (Hz) is unit of frequency

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Hemanshu Kumar 7 years ago

Hertz

0Thank You

Birender Singh Bhati 7 years ago

Hertz (Hz)

2Thank You

ANSWER

The scientist who invented the vaccine of polio 1st

Posted by Birender Singh Bhati 7 years ago

CBSE > Class 08 > Science

4 answers

Samruddhi Br 7 years ago

Jonas Salk

1Thank You

Ritika Ritu 7 years ago

No it is not in the ncert Book only the scientist who invented small pox is there

0Thank You

Birender Singh Bhati 7 years ago

Is it in ncert book

1Thank You

Ritika Ritu 7 years ago

Jonas Salk in 1955

1Thank You

ANSWER

Whst are the monomer units of Nylon Polyester Rayon

Posted by Ritika Ritu 7 years ago

CBSE > Class 08 > Science

1 answers

Meghna Thapar 5 years, 9 months ago

Monomer of rayon is cellulose, which reacts carbon disulfide (CS2) and base (sodium hydroxide) to give a soluble polymer that can be converted into rayon. Polyester is made up of the monomer which is a combination of Ethane-1,2-diol and benzene-1,4-dicarboxylic acid (terephthalic acid). The polyesters have a wide number of uses depending upon the orientation of the different monomers present in the polymer. Nylon 6 is only made from one kind of monomer, a monomer called caprolactam. Nylon 6,6 is made from two monomers, adipoyl chloride and hexamethylene diamine.

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How is biological fixation of nitrogen different from its atmospheric fixation?

Posted by Pari Arora 7 years ago

CBSE > Class 08 > Science

1 answers

Hemanshu Kumar 7 years ago

In biological fixation, nitrogen fixing bacteria fix atmospheric nitrogen i.e rhizobium. But, in atmospheric fixation, nitrogen fixation is done by lightning.

1Thank You

ANSWER

Which part of human ear passes vibration to orditary nerve .

Posted by Birender Singh Bhati 7 years ago

CBSE > Class 08 > Science

1 answers

Richa Shree 7 years ago

Cochlea that contains a fluid. These fluids convert the mechanical vibrations in the signals and transfer it to orditary nerve.

1Thank You

ANSWER

Loudness is determined by _______________

Posted by Birender Singh Bhati 7 years ago

CBSE > Class 08 > Science

4 answers

K Raja 7 years ago

Loudness is determined by AMPLITUDE of the vibration

0Thank You

I Am The Best 7 years ago

Amplitude

2Thank You

Ritika Ritu 7 years ago

Yes and its unit is called decibel(dB)

0Thank You

Richa Shree 7 years ago

Frequency

1Thank You

ANSWER

What is cell wall ?

Posted by Tanu Dabas 7 years ago

CBSE > Class 08 > Science

2 answers

Hemanshu Kumar 7 years ago

Cell wall is a a covering of cellulose outside plasma membrane around all plant cells

0Thank You

Kartik Parihar 7 years ago

Cell wall is a outer thick covering of the plant cell which protect the plant cell from temperature and rainfall ,humidity etc climatic conditions.

1Thank You

ANSWER

Earthquake above the magnitude of _________ on richter scale can cause destruction

Posted by Ruman Rathod 7 years ago

CBSE > Class 08 > Science

3 answers

Ritika Ritu 7 years ago

Above 7.5 will cause high level of damage to the human environment

1Thank You

Aruna Devi 7 years ago

1Thank You

Alok Singh 7 years ago

1Thank You

ANSWER

During electroplating the metal that has to be electroplated is connected to the _____ terminal of the battery

Posted by Ruman Rathod 7 years ago

CBSE > Class 08 > Science

1 answers

Mohit Painuly 7 years ago

negative

1Thank You

ANSWER

Distilled water can be made conducting by adding some _________ to it

Posted by Ruman Rathod 7 years ago

CBSE > Class 08 > Science

3 answers

Yuvi Grover 7 years ago

Acids, bases and salts

1Thank You

I Am The Best 7 years ago

Salts or minerals

1Thank You

Ritika Ritu 7 years ago

Salt

1Thank You

ANSWER

Distilled water is a _______ conductor of electricity

Posted by Ruman Rathod 7 years ago

CBSE > Class 08 > Science

4 answers

I Am The Best 7 years ago

Poor

1Thank You

Hemanshu Kumar 7 years ago

Bad

0Thank You

Aruna Devi 7 years ago

Good

0Thank You

Ritika Ritu 7 years ago

Poor

1Thank You

ANSWER

Tap water can be made more conducting by adding a few drop of _______ juice

Posted by Ruman Rathod 7 years ago

CBSE > Class 08 > Science

4 answers

I Am The Best 7 years ago

Lemo

2Thank You

Hemanshu Kumar 7 years ago

Lemon

0Thank You

Ruman Rathod 7 years ago

Yea it is right

0Thank You

Richa Shree 7 years ago

Lemon

2Thank You

ANSWER

Skiers use flat and long skies to slide over the snow true or false

Posted by Akshat Jha 7 years ago

CBSE > Class 08 > Science

1 answers

Richa Shree 7 years ago

True

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Nylon is prepared from _________ , _________ and _________ .

Posted by Ashhad Khanji 7 years ago

CBSE > Class 08 > Science

2 answers

Ritika Ritu 7 years ago

Coal,water and air

0Thank You

Alok Singh 7 years ago

Coal,petroleum,natural gas

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ANSWER

On monday I have science exam someone pls help

Posted by Ritika Ritu 7 years ago

CBSE > Class 08 > Science

4 answers

Hemanshu Kumar 7 years ago

Do not learn...understand answer . . If u had understand chapter then it will easy to understand or learn answers

0Thank You

Hemanshu Kumar 7 years ago

Reaching to the age of adolescence is not coming in exam according to my syllabus

0Thank You

Richa Shree 7 years ago

You should read the notes and revise the important chapters.

2Thank You

Smith Zade Zade 7 years ago

U can do reproduction in animals .......reaching the age of Adolesce......pollution of air and water........ Stars and solar system..... The four chapters is important....... So keep it up..... And all the best for your exam..... Who's people read this answer...... Tell me which k. V Do you study.... I am in k. V. Well new majri...

2Thank You

ANSWER

How to insert sperm into ova

Posted by Pragna Chatterjee 7 years ago

CBSE > Class 08 > Science

2 answers

Hemanshu Kumar 7 years ago

I had ask u question and u are thanking me.....

0Thank You

Hemanshu Kumar 7 years ago

What do you mean.....

1Thank You

ANSWER

What are the sattelite launched by ISRO?

Posted by Ritika Ritu 7 years ago

CBSE > Class 08 > Science

3 answers

Virat Rajput 7 years ago

GSAT, PDLV-C43, IRS

1Thank You

Ritika Ritu 7 years ago

Aryabhatta, Kalpana,IRS

1Thank You

Pragna Chatterjee 7 years ago

GSAT , PSLV-C43

4Thank You

ANSWER

The product obtained when steam is passed through red hot coke?

Posted by Ananya Vinodh 7 years ago

CBSE > Class 08 > Science

1 answers

Sneha Khurana 7 years ago

The reaction produced carbon dioxide and hydrogen which after a process of cooling and scurbbing produces hydrogen gas

2Thank You

ANSWER

Any five difference

Posted by Munaf Khan 7 years ago

CBSE > Class 08 > Science

1 answers

Saloni Pant 7 years ago

Of what

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Differnce between aimal cell and plant cell

Posted by Munaf Khan 7 years ago

CBSE > Class 08 > Science

2 answers

Saloni Pant 7 years ago

In plant cell there was a large vacoule But in animal cell there is no or small vacoule In plant el have cell wall in it But in animal cell there is no cell wall in it In plant cell there are chloroplast and other plastides But in animal cell there are no chloroplast and other plastids in it

1Thank You

Saloni Pant 7 years ago

Its animal

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ANSWER

Why do we see sparks when a plug is loose in its socket

Posted by Shreya Jain 7 years ago

CBSE > Class 08 > Science