CBSE > Class 10 > Science | CBSE Board | Homework Help

Resistance is connected in SERIES in such a way that the CURRENT flowing through them is same but potential difference between each resistor DIFFERS ie, in END-TO-END connection.

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Surya Narayan Mohapatra 4 years, 11 months ago

Resistors

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ANSWER

[H^+] of HCL is 2*10-³M find the pH and poH.[log 102=0.301]

Posted by Ashish Chaurasia 4 years, 11 months ago

CBSE > Class 10 > Science

1 answers

Adithya Dev A 4 years, 11 months ago

3.01

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Why it is recommended that to mix acid into water into acid?

Posted by Ashish Chaurasia 4 years, 11 months ago

CBSE > Class 10 > Science

2 answers

Divya Singh 4 years, 11 months ago

It is recommended that acid should added to water not water to acid this is because adding acid to water is an exothermic reactions it releases heat when water will be added to acid it may burst the burner and may harm you as it releases more heat

1Thank You

Divya Singh 4 years, 11 months ago

It is recommended that I should should added to water not water to acid this is because adding acid to water is an exothermic reactions it releases heat when water will be added to acid it may boast the burner and may harm you as it releases more heat

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ANSWER

Why did the colour of sky is not violet or indigo

Posted by 123456789 0648 4 years, 11 months ago

CBSE > Class 10 > Science

1 answers

Sukumar Mugundhan 4 years, 11 months ago

Hi Guys Here is the answer? The smaller the wavelength of the light the more the light is scattered by the particles in the atmosphere. ... This is because the sun emits a higher concentration of blue light waves in comparison violet. Furthermore, as our eyes are more sensitive to blue rather than violet this means to us the sky appears blue.

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ANSWER

Explain circular loop

Posted by Lata Kumari 4 years, 11 months ago

CBSE > Class 10 > Science

3 answers

Lata Kumari 4 years, 11 months ago

Thank you

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Saliha Tahir 4 years, 11 months ago

circular loop bhoot sari chooti chooti straight wire se bna hota h. hm kise straight wire ko gol gol coil ki shap me mod de to to wo loop bn jata h jise hm circular loop khte h . Jb usme current flow karwaye ge to uske aas paas magnetic field bne gi. Jaha se exact gol hoga waha Sab se zada magnetic field pass pass hogi or jine door hota jaga utni magnetic field bhi km or durr durr hoti jaye gi or unke bich ka distance bhi bde ga... Jb magnetic field line dono side se pass pass ho jaye gi to wo center me aa kr straight ho gaye gi . Jis pr hm right hand thumb rule laga kr current ki director ko pta kr sakte h ... Bss itna hi h is me..... DIGRAM BOOK ME DEKH LENA AAP...jada better samajh aaye ga..

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Saliha Tahir 4 years, 11 months ago

A circular loop is made up of large number of small straight wires. Magnetic field is produce by an electric current flowing through a circular coil of wire. Each small action of current carring wire contribute to magnetic field line. at center of circular wire the field line become straight to the coil . Now apply right hand thumb rule u can find the direction of mignetic field line.

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ANSWER

Role of genes in inheritance in hu.an beings lab manual work

Posted by Ayush Mishra 4 years, 11 months ago

CBSE > Class 10 > Science

1 answers

Raj Tiwari 4 years, 11 months ago

Genes are transferred from patents to next generation in the form of DNA

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ANSWER

Why did the colour of sky is blue

Posted by 123456789 0648 4 years, 11 months ago

CBSE > Class 10 > Science

1 answers

Sehzyada All In One 4 years, 11 months ago

Violet and indigo colour get scatter and blue colour start scattering ,fall in our eye so clear sky look like blue .

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ANSWER

What is breathing? What happens to the rate of breathing during vigorous exercise and why?

Posted by Shiva Sawariya 4 years, 11 months ago

CBSE > Class 10 > Science

1 answers

Suraj Gupta 4 years, 11 months ago

The process of taking oxygen from and removing carbon dioxide is called breathing. Rate of breathing increases because during exercise our body need more oxygen to provide more energy

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ANSWER

Why is the strength of magnetic field inside a long current carrying straight solenoid same at all points

Posted by Bikram Aditya Nayak 4 years, 11 months ago

CBSE > Class 10 > Science

1 answers

Adithya Dev A 4 years, 11 months ago

A solenoid consists of large number of turns of smaller wires in it. So, when current is passed through the solenoid, every wire contributes to the current in the SAME manner in the SAME direction. So, current is same at all points inside a solenoid.

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ANSWER

Define second focus ?

Posted by Aman Raza 4 years, 11 months ago

CBSE > Class 10 > Science

1 answers

Ritika Arya? 4 years, 11 months ago

The second principal focus of a lens is the position of the image on the principal axis of the lens when the object is formed at Infinity the distance of the second principal Axis from the centre of the lens is known as the second principle of focal length

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What is the cause of dispersion of light by prism? (1) Different colours move with different speed in prism. (2) Emergent ray bent to different extent towards the base of prism. (3) Different colours move with same speed in the prism but cover different distance. (4) Emergent ray bent to different extent away from the base of prism. (A) (1) only (B) (1) and (2) (C) (3) and (4) (D) (2) and (3)

Posted by Shivam Dabas 4 years, 11 months ago

CBSE > Class 10 > Science

3 answers

Adithya Dev A 4 years, 11 months ago

(B) (1) & (2).

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Shivam Dabas 4 years, 11 months ago

(B) 1and 2

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Sai Sahith 4 years, 11 months ago

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ANSWER

What is the cause of dispersion of light by prism? (a) Different

Posted by Shivam Dabas 4 years, 11 months ago

CBSE > Class 10 > Science

1 answers

Adithya Dev A 4 years, 11 months ago

Different constituents of white light have different WAVELENGTHS and therefore, have different velocities even when passed through same medium. So, they deviate at different angles and thus, disperse.

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ANSWER

Explain the term "Regeneration" as used in relation to reproduction of organisms. Describe briefly how regeneration is carried out in multicellular organisms like Hydra.

Posted by Himanshu Rajput 4 years, 11 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

What is observed when a pinch of sodium hydrogen carbonate is added to 2 mL of acetic acid taken in a test tube? Write chemical equation for the reaction involved in this case.

Posted by Himanshu Rajput 4 years, 11 months ago

CBSE > Class 10 > Science

2 answers

Himanshu Rajput 4 years, 11 months ago

Thankyou

1Thank You

Khushi 4 years, 11 months ago

In this process colourless and odourless gas CO2 evolves with brisk effervescence.NaHCO3 + CH3COOH→CH3COONa + H2O + CO2

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ANSWER

What do you observe when you drop a few drops of acetic acid to test tubes containing (a) phenolphthalein (b) distilled water (c) universal indicator (d) sodium hydrogen carbonate powder.

Posted by Himanshu Rajput 4 years, 11 months ago

CBSE > Class 10 > Science

3 answers

Himanshu Rajput 4 years, 11 months ago

Kya

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Shabd Kumar 4 years, 11 months ago

Then please tell me

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Shabd Kumar 4 years, 11 months ago

Do u know

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ANSWER

Why does a compass needle get

Posted by Ashok Kilania 4 years, 11 months ago

CBSE > Class 10 > Science

2 answers

Annanya Gupta 4 years, 11 months ago

Please complete your question.....

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Zora Singh Otal 4 years, 11 months ago

Due to the force of magnetic field

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ANSWER

How can I complete my maths and science syllabus ???

Posted by Teresa Singh ✌🏻 4 years, 11 months ago

CBSE > Class 10 > Science

4 answers

Annanya Gupta 4 years, 11 months ago

Practice more ñ more, frame a routine and try to study through it....

3Thank You

Pranav Pathak 4 years, 11 months ago

Padh ke

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, 🙂 4 years, 11 months ago

Fastly complete the syllabus board exam is near

1Thank You

, 🙂 4 years, 11 months ago

In one day atleast complete one chapter then revise

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ANSWER

Speed of light in glass is_______

Posted by Harshal Joshi 4 years, 11 months ago

CBSE > Class 10 > Science

3 answers

Kalyani Shahi 4 years, 11 months ago

2*10^8 m/sec

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Lata Kumari 4 years, 11 months ago

Speed of light in glass is 200,000 kilometre per second travel

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Tamanna Agrawal 4 years, 11 months ago

Less

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ANSWER

Substance which oxidizes itself and reduce other is known as__________________.

Posted by Harshal Joshi 4 years, 11 months ago

CBSE > Class 10 > Science

2 answers

Khushi Baliyan 4 years, 11 months ago

Oxidising agent

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Tamanna Agrawal 4 years, 11 months ago

Oxidising agent

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ANSWER

Q. Which of the following prevent collapsing of trachea? a). Diaphragm. b). Alveoli c). Rings of cartilage. d). Ribs.

Posted by Harshal Joshi 4 years, 11 months ago

CBSE > Class 10 > Science

5 answers

Kinjal Agarwal 4 years, 11 months ago

2Thank You

Khushi Baliyan 4 years, 11 months ago

Rings

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Pawan Kumar 4 years, 11 months ago

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Lata Kumari 4 years, 11 months ago

Rings of cartilage

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Tamanna Agrawal 4 years, 11 months ago

Rings of cartilage

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ANSWER

List any two changes when a substance become rancid

Posted by Mohit Tiwari 4 years, 11 months ago

CBSE > Class 10 > Science

2 answers

Shabd Kumar 4 years, 11 months ago

Ya! She is absolutely right, That it will change its taste. And it will change its smell also. And gives a different type of smell. And it is unhealthy for us. So we should keep away from this.

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Tamanna Agrawal 4 years, 11 months ago

Change in taste It became unhealthy for body

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ANSWER

Explain doberieners classification?

Posted by Amal Fathima 4 years, 11 months ago

CBSE > Class 10 > Science

1 answers

, 🙂 4 years, 11 months ago

When the elements were written in order of increasing atomic masses the atomic mass of the middle was the average of the atomic mass of the other two elements.

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ANSWER

Non metal do not evolve hydrogen gas when react with acid. Why ?

Posted by Kumar Kumar 4 years, 11 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

Friends what to do in last two months to relay exams

Posted by Yash Vardhan 4 years, 11 months ago

CBSE > Class 10 > Science

3 answers

Malaika Sharma 4 years, 11 months ago

Sorry to say but Mr.Kumar if u cannot encourage someone to work hard and score good so dont even discourage by misguiding.Board exams will not be easy.Apna idea khud pe try karke dekh lena phir result bata dena.I dont want to fight but meine kuch galat bhi nahi kaha. Wish u all the best for board exams (friendly not rudely)

2Thank You

Annanya Gupta 4 years, 11 months ago

Practice more ñ more until you think you are prepared for the exam and frame a daily schedule and try to study according to it....

2Thank You

Kumar Kumar 4 years, 11 months ago

Play

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ANSWER

What are a neutralisation reaction ?Give two examples

Posted by Student 📕🖋 4 years, 11 months ago

CBSE > Class 10 > Science

4 answers

Mandeep Singh 4 years, 11 months ago

Examples is : When NaoH react with hcl-to give nacl and h2o

1Thank You

Mandeep Singh 4 years, 11 months ago

Te reaction in which the acid react with base to form salt and water.

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Mitali Khanal 4 years, 11 months ago

When acid reacts with base it forms salt and water ,thus its know as naturalisation reaction.

1Thank You

Khushi 4 years, 11 months ago

The reaction between an acid and a base to give salt and water is known as neutralisation reaction. Example:-(1) HCl + NaOH→ NaCl + H2O (2) 3HNO3 + Fe(OH)3→Fe(NO3)3 + 3H2O

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ANSWER

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