CBSE > Class 10 | CBSE Board | Homework Help

Calcium hydroxide, Ca(OH)₂, is a strong base. It dissociates completely into Ca²⁺ and OH^- ions in aqueous solution. It is, however, sparingly soluble in water. Ca(OH)₂ is a strong base but not very soluble.

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Who is Goutham budha

Posted by Swathi Senthilkumar 5 years, 7 months ago

CBSE > Class 10 > English Language and Literature

3 answers

Ajin Ajin 5 years, 6 months ago

Gautam Buddha was a Prince who was named Siddhartha Gautam by his parents. He was born in 563 B.C. in North India. He had been shielded from the sufferings of the world. He attained enlightenment under a Peepal tree and named the tree as 'Tree of Wisdom'. He was the founder of Buddhism

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Riya Philip 5 years, 7 months ago

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Yogita Ingle 5 years, 7 months ago

Gautam Buddha was a Prince who was named Siddhartha Gautam by his parents. He was born in 563 B.C. in North India. He had been shielded from the sufferings of the world. He attained enlightenment under a Peepal tree and named the tree as 'Tree of Wisdom'.

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Find the object distance using lense formula if focal length is 20 and image distance is 20cm

Posted by Shraddha Panchbhai 5 years, 7 months ago

CBSE > Class 10 > Science

1 answers

Riya Philip 5 years, 7 months ago

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Hindi vyakran ras notes

Posted by Vedanshu Nishad 5 years, 7 months ago

CBSE > Class 10 > हिंदी ए

1 answers

Seema Choudhary 5 years, 6 months ago

You can see and understand about vyakaran ras in this app

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Write an article on the importance of water

Posted by Dk Dalal 5 years, 7 months ago

CBSE > Class 10 > English Language and Literature

1 answers

Riya Philip 5 years, 7 months ago

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Explain Decentralisation in India

Posted by Dikshant Mashane 5 years, 7 months ago

CBSE > Class 10 > Social Science

2 answers

Riya Philip 5 years, 7 months ago

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Yogita Ingle 5 years, 7 months ago

The process of of dispersing or distributing decision making power to the smaller units is known as Decentralisation.
Taking away the power from the Supreme level and the state level and giving it to the local level is called decentralisation. It once happened in India in the year 1912 .

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Why the demand deposit considered as money?

Posted by Mihika Sharma 5 years, 7 months ago

CBSE > Class 10 > Social Science

2 answers

Riya Philip 5 years, 7 months ago

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Yogita Ingle 5 years, 7 months ago

Demand deposits are considered as money, because they can be withdrawn when required and the money withdrawn can be used for making payments. So, they are also considered as money in the modern economy.

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If an AP if a=4,n=7,d=4then nth term will be

Posted by Sonia Jamwal 5 years, 7 months ago

CBSE > Class 10 > Mathematics

4 answers

Yuvraj Kumar 5 years, 7 months ago

An+(n-1) d An=4+(7-1) 4 An=4+6×4 An=4+24 An=28

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Subha Tripathy 5 years, 7 months ago

an= 28

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Riya Philip 5 years, 7 months ago

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Vanita Mehta 5 years, 7 months ago

An = 28 by an = a + (n - 1)× d

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Surface areas formulas

Posted by Abhay Soni 5 years, 7 months ago

CBSE > Class 10 > Mathematics

2 answers

Riya Philip 5 years, 7 months ago

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Versha Kawaliya 5 years, 7 months ago

Surface area of a cuboid =2(lb+bh+hl) sq. unit Surface area of a cube = 6s2 sq. unit

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I m in grade10th so I want to become a doctor so I which time I will starts preparations for neet exam

Posted by Versha Kawaliya 5 years, 7 months ago

CBSE > Class 10 > Other Subjects

2 answers

Kashika Khuranaa.. ? 5 years, 6 months ago

All the best for ur dream I wish u cld achieve it and it's better if u first focus on boards and then for neet coz boards r ur first priority right now .. hope u'll understand dear ?

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... Yang ... 5 years, 6 months ago

Uh can start the preparations from now itself. It will be very helpful. HoPe It HeLpS yOu??

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Which state is known as harbinger of green revolution in india

Posted by Vivek N 5 years, 7 months ago

CBSE > Class 10 > Social Science

3 answers

Riya Philip 5 years, 7 months ago

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Saurabh ???? 5 years, 7 months ago

Punjab

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Sanika Walimbe 5 years, 7 months ago

Punjab

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How acids react with metal oxides?(2)explain with reaction *

Posted by Trisav Dhiman 5 years, 7 months ago

CBSE > Class 10 > Science

3 answers

Moksha Maheta 5 years, 6 months ago

Acid +metal oxides=salt +water

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Riya Philip 5 years, 7 months ago

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Versha Kawaliya 5 years, 7 months ago

When acid reacts with metal oxide to form salt and water. Example- 1. CopperII to oxide is a metal oxide. Dilute hydrochloric acid with copper to oxide to give copper to chloride and water Cup + HCl (dil.) -- Cucl2 + H2O 2. When sodium oxide reacts with dilute hydrochloric acid to form sodium chloride +water Na20 +HCl (dil.) --Na2cl + H20

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Cos square theta upon 1 minus 10 theta + sin square theta upon sin theta minus cos theta is equal to 1 + sin theta cos theta

Posted by Anjal Saini 5 years, 7 months ago

CBSE > Class 10 > Mathematics

1 answers

Riya Philip 5 years, 7 months ago

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X2+2xy+y2

Posted by Dhruvi Rathore 5 years, 7 months ago

CBSE > Class 10 > Mathematics

4 answers

Aarav Khandelwal 5 years, 7 months ago

[X + Y]^2

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Riya Philip 5 years, 7 months ago

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Vanita Mehta 5 years, 7 months ago

(X + Y)^2

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Anisha Mehta 5 years, 7 months ago

(x+y )^ it means x+y whole square

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अधोलिखितं गद्यांशं पठित्वा प्रश्नानाम् उत्तराणि लिखत।कश्चन बालकः आसीत्। तस्य पिता नितरां निर्धनः आसीत्। बालकः अध्ययनं कर्तुम् इच्छति स्म। किन्तु यस्मिन् गृहे उदरपूर्ति-समस्याया:एव उत्तरं न स्यात् तत्र तस्य अध्ययनं व्यवस्था कथं भवेत्? अतःबालकःविद्यालयं गच्छतः स्वसम वयस्कान् बालकान् दृष्ट्वा निश्श्वशिति स्म। सः स्नेहपरः, मृदुभाषी, उत्साहमूर्ति: च आसीत्।पित्रा सह कार्यं कुर्वन् सः बहूनां बालानां मैत्रीं सम्पादितवान्। ते बाला: तं अक्षराणि अपाठयन। अक्षराभ्यासं कृत्वा अन्यै: उपयुक्तपूर्वाणि पुस्तकानि पठन् शब्दज्ञानादिकं प्राप्तवान् सः। ‘ पुत्र: विद्यालयं प्रति प्रेषणीयः’ इति पितु:अपि तीव्र इच्छा आसीत्।किन्तु निर्धनता जन्या असहायता तं बाधते स्म। अधिक धनसम्पादनस्य आशया सः कदाचित् पुत्रेण सह कलकत्ता नगरं प्रति प्रस्थितवान्। रेलयानेन गमनाय धनं नासीत् अतः तौ पादाभ्याम् एव प्रस्थितवन्तौ। १)एकपदेन उत्तरत। 1×1=1 अ) बालकस्य पिता कीदृश:आसीत्? २)पूर्णवाक्येन उत्तरत। 2×1=2 अ) पितरं का बाधते स्म? ३)उपरिलिखितस्य अनुच्छेदस्य कृते उचितं शीर्षकं लिखत 1×1=1 ४)यथानिर्देशम् उत्तरत। 1×1=1 अ) ‘कश्चन बालकः आसीत्’ अत्र कर्तृपदं किं अस्ति ?

Posted by Adithya P.A 5 years, 7 months ago

CBSE > Class 10 > संस्कृत (शेमुषी)

3 answers

Kamlesh Kumar Mandal 5 years, 6 months ago

Hindi me anuwad

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Brijraj Singh 5 years, 6 months ago

Nitram nirdhanah

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J Nc 5 years, 6 months ago

Nirdhan

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The diagonal of rectangular fiels is 60 Metres more than the shoter side. If the longer side is 30 metres More than the ahoter side , find the side of the field.

Posted by Shruti Tripathi 5 years, 7 months ago

CBSE > Class 10 > Mathematics

2 answers

Riya Philip 5 years, 7 months ago

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Yogita Ingle 5 years, 7 months ago

Let the length of the shorter side be x metres.

The length of the diagonal= 60+x metres

The length of the longer side =30+x metres

Applying Pythagoras theorem,

Diagonal²=longer side²+shorter side²

(60+x) ²= (30+x) ² + x²

3600+120x+x²=900+60x+x²+x²

2700+60x-x²=0

2700+90x-30x-x²=0

90(30+x)-x(30+x) =0

X=90,

Shorter side is 90m, longer side is 90+30=120m

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Observe the movement of your stomach during inhatation and exhalatian what can be the reason behind your observation

Posted by Himanshu Rajput 5 years, 7 months ago

CBSE > Class 10 > Science

3 answers

Riya Philip 5 years, 7 months ago

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Rishi Kaushal 5 years, 7 months ago

Peristaltic movement

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Yogita Ingle 5 years, 7 months ago

Normal ventilation is an automatic, seemingly effortless inspiratory expansion and expiratory contraction of the chest cage. This act of normal breathing has a relatively constant rate and inspiratory volume that together constitute normal respiratory rhythm. The accessory muscles of inspiration (sternocleidomastoid and scalenes) and expiration (abdominal) are not normally used in the resting state. Abnormalities may occur in rate, rhythm, and in the effort of breathing.

Technique

The establishment of the tidal volume and pattern of respiration in normal individuals is a complicated process. Recognizing alterations in these factors is an important early clue of disease recognition. While frequently it is nonspecific, in many instances it can lead directly to a diagnosis. Careful observation of the respiratory rate and pattern is a crucial part of the physical examination.

Simple inspection of the respiratory cycle, observing rate, rhythm, inspiratory volume, and effort of breathing, is all that is necessary. The rate is noted by observing the frequency of the inspiratory phase, since this phase is active and easy to count. Record the number of breaths per minute; this is the respiratory rate. While observing the rate, note the inspiratory expansion of the chest cage. This expansion should be the same during each cycle.

Normally, the accessory muscles of inspiration and expiration are not used. Their use should be observed and, if found, recorded as "use of accessory muscles on inspiration" and "expiration is active with abdominal muscle contraction."

Basic Science

The respiratory system's major functions are to provide an adequate oxygen (O₂) supply to meet the energy production requirements of the body and maintain a suitable acid-base status by removing carbon dioxide (CO₂) from the body. This is accomplished by moving varying volumes of air into and out of the lungs. Ventilation, the process of air movement into the lungs, is a carefully controlled modality with a wide range of response that enables the markers of gas exchange adequacy (Pao2, Paco2, and pH) to be kept within a relatively small physiologic range.

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a converging lens of power 8 diopter is combined with a divergent lens of power -10 diopter calculate the focal length of the combination

Posted by Suryansh Gupta 5 years, 7 months ago

CBSE > Class 10 > Science

2 answers

Suryansh Gupta 5 years, 6 months ago

???????

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Riya Philip 5 years, 7 months ago

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What is SI. unit of electricity

Posted by Vikas Roria 5 years, 7 months ago

CBSE > Class 10 > Science

5 answers

Akshita Akshita 5 years, 7 months ago

Ampere

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Versha Kawaliya 5 years, 7 months ago

Ampere

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Ravidev Mandal 5 years, 7 months ago

Ampere

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Yogita Ingle 5 years, 7 months ago

Electric power is the rate at which work is done or energy is transformed into an electrical circuit. It is represented by P.

The formula for electric power is

P = VI = VQ/t

P = Power

V i= Potential difference in the circuit

I = Electric current

Q = Electric charge in coulombs

t = Time in seconds

The SI unit of electric power is Watt or joule per second.

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Mujhe lesson 4 ke question answers dekhne h

Posted by Priyanka Kaushik 5 years, 7 months ago

CBSE > Class 10 > संस्कृत (शेमुषी)

1 answers

Shalini Kumari 5 years, 6 months ago

Available on this app

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Write character sketch of Nelson Mandela.

Posted by Shivang Joshi 5 years, 7 months ago

CBSE > Class 10 > English Language and Literature

2 answers

Riya Philip 5 years, 7 months ago

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Yogita Ingle 5 years, 7 months ago

Nelson Mandela, the first Black president of South Africa, after more than 3 centuries of white rule, celebrated very vividly the grand ceremony of the first democratic non-racial government. Being sworn in, he said radiantly that “Never, never again shall it be that this beautiful land will again experience the oppression of one by another”. He pays homage to the freedom fighters like Oliver Tambo, Luthuli, Yusuf Dadoo. They were men of uncommon courage, wisdom and generosity. He regards the death of thousands of people who sacrificed their lives for the cause of courage. It is not the absence of fear but the victory over it. No man is born with harassment rather love which comes natural to the human heart. He says every man has his duties to his family, to the community and to his country to perform honestly.

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Trick of prove triangle questions

Posted by Harish Chouhan 5 years, 7 months ago

CBSE > Class 10 > Mathematics

1 answers

Riya Philip 5 years, 7 months ago

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If (p-1),(p-2),(3p-1)are in Ap,then p is equal to : 1.(4) 2.(-4) 3.(2) 4.(-2)

Posted by Love Rathore 5 years, 7 months ago

CBSE > Class 10 > Mathematics

5 answers

Riya Philip 5 years, 7 months ago

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Yogita Ingle 5 years, 7 months ago

If you write p + 3 in place of p -2 then the answer is 4.

p−1,p+3,3p−1 are in A.P.

∴2(p+3)=p−1+3p−1

⇒2p+6=4p−2

⇒2p=8

∴p=4

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Abhay Soni 5 years, 7 months ago

(p -2) - (p -1) = (3p -1) - (p -2) p -2 - p + 1 = 3p - 1 - p + 2 -1 = 2p + 1 2p = -1 -1 2p = -2 p = -2/2 = -1

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Love Rathore 5 years, 7 months ago

But answer is 4

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Yogita Ingle 5 years, 7 months ago

(p -2) - (p -1) = (3p -1) - (p -2)

p -2 - p + 1 = 3p - 1 - p + 2
-1 = 2p + 1

2p = -1 -1

2p = -2

p = -2/2 = -1

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Which book i must study for class boards.

Posted by Aditya Bhardwaj 5 years, 7 months ago

CBSE > Class 10 > Mathematics

3 answers

Ruhit Sonar 5 years, 6 months ago

Main text book...and extra questions related to the topic.. it will help to score good marks..

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Riya Philip 5 years, 7 months ago

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Keerthi Kandakur 5 years, 7 months ago

Oswal

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linear magnification of a concave lens is always positive and where as that of convex lens has both positive and negative why

Posted by Nikki Jaisawal 5 years, 7 months ago

CBSE > Class 10 > Science

3 answers

Abhay Soni 5 years, 7 months ago

(a) This is because a concave lens forms a virtual and erect image for any position of the object. (b) This is because image formed by a convex lens may be real and inverted for some positions of the object and image formed may also be virtual and erect for some other positions to the object

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Yogita Ingle 5 years, 7 months ago

(a) This is because a concave lens forms a virtual and erect image for any position of the object.
(b) This is because image formed by a convex lens may be real and inverted for some positions of the object and image formed may also be virtual and erect for some other positions to the object.

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Riya Philip 5 years, 7 months ago

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