CBSE > Class 10 | CBSE Board | Homework Help

Photosynthesis is considered an endothermic reaction , because during the process of photosynthesis, energy from the sun or sunlight is being absorbed.

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Yuvraj Agarwal 4 years, 1 month ago

Endothermic reaction

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Aashika Kumawat 4 years, 1 month ago

Endothermic reaction

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ANSWER

If b tan theta is equals to a find the value of cos theta + sin theta by cos theta minus sin theta

Posted by Srishti Maheshwary 4 years, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Rachit Gupta 4 years, 1 month ago

B+A/B-A is the answer

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ANSWER

An aqueous solution of a salt shows an orange red colour when a drop of universal indicator is added to it .This salt is made up of: a.A strong acid and a strong base b.A weak acid and a weak base c.A strong acid and a weak base d.A weak acid and a strong base

Posted by B. Uday 4 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Snowie Bakshi 4 years, 1 month ago

This salt is made up of strong acid and weak base

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Which one of the following chemicals is used in soda acid fire extinguishers? a.Sodium chloride b.Sodium acetate c.Sodium hydrogen carbonate d.Ammonium sulphate

Posted by B. Uday 4 years, 1 month ago

CBSE > Class 10 > Science

3 answers

Sia ? 4 years, 1 month ago

Sodium hydrogen carbonate

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Dnyan Parekh 4 years ago

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Khushbu Shaikh 4 years, 1 month ago

Sodium bicarbonate or can say sodium hydrogen Carbondate is used as soda acid fire extinguisher

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ANSWER

Assertion:Silver salts are used in black and white photography Reason:Silver salts do not decompose in the presence of light

Posted by B. Uday 4 years, 1 month ago

CBSE > Class 10 > Science

2 answers

Sia ? 4 years, 1 month ago

Assertion is correct but the reason is False
Explanation: The mail reason silver salt, Silver Bromide is used in photography is because it decomposes into bromine and metallic silver on light exposure. This is the main property that made it perfect for black and white photography
When AgBr is suspended in a gelatin solution, the AgBr grains create a special emulsion. When this emulsion is exposed to light, AgBr decomposes into silver and bromine and a photographic image is preserved.

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Manohar Paturi 4 years, 1 month ago

A is true and R is false

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The probability expressed as a persrcentage of a occurrence can never be

Posted by Dhruv Chopra 4 years, 1 month ago

CBSE > Class 10 > Mathematics

3 answers

Yuvraj Agarwal 4 years, 1 month ago

1Thank You

Sukanya Mahapatra 4 years, 1 month ago

less than 0 and greater than 1

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Shwêtã Árîc 4 years, 1 month ago

Probability can never be negative and greater than 1.

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ANSWER

Centroid of a triangle

Posted by Abel George 4 years, 1 month ago

CBSE > Class 10 > Mathematics

2 answers

Dhairya Sharma? 4 years, 1 month ago

Centroid = (x1+x2+x3whole divide by 3 , y1+y2+y3whole divide by 3)

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Shwêtã Árîc 4 years, 1 month ago

Centroid of a triangle is a intersection point of its medians.

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ANSWER

In to days question paper jsk/1 the first question is not specified tha where the glass is hot wet or cold because magnesium react with hot water ...

Posted by Aman Kumar 4 years, 1 month ago

CBSE > Class 10 > Science

0 answers

ANSWER

Respected sir/Madam please send answer key of science exam because from Google we have totally confused sir /Madam so please

Posted by Anshul Binjariya 4 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Aseem Mahajan 4 years, 1 month ago

Check on cbse's official site

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ANSWER

How to identificate vakye-rupantran

Posted by Yaksh Dahiya 4 years, 1 month ago

CBSE > Class 10 > हिंदी ब

0 answers

ANSWER

How to identificate pd-parichya

Posted by Yaksh Dahiya 4 years, 1 month ago

CBSE > Class 10 > हिंदी ब

1 answers

Mohammad Abdullah Khan 4 years, 1 month ago

Neta gi ka chasma

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ANSWER

Is lokgeet da bhaav sankhape vich likho

Posted by Sehaj Kaushal 4 years, 1 month ago

CBSE > Class 10 > Regional Language

0 answers

ANSWER

Purush me sukranu sirsak kaha hota hai

Posted by Dream Shutter 4 years, 1 month ago

CBSE > Class 10 > विज्ञान

2 answers

Suraj Pal 3 years, 4 months ago

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Akansha Khaturia 3 years, 10 months ago

Magnishiyam ka sutr kya hai

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The sum of two possitive numbers x and y (x>y)is50 and the difference of there squares is 720. find the number

Posted by Vaibhav Kumar Deo ×͜× 4 years, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

[Vishal Kumar Paswan] [11] 4 years, 1 month ago

If your information is correct , then : x + y = 50 and (x**2) - (y**2) = (x + y)(x - y) = 720 ; So , 50(x - y) = 720 ; (x - y) = 14.4 Then , since (x + y) = 50 and (x - y) = 14.4 , 2x = 64.4 and 2y = 35.6 Therefore , x = 32.2 and y = 17.8 Ans.

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Two line segments AC and BD intersect each other at the point p such that PA= 6cm ,PB =3cm ,PC=2.5cm ,PD =5cm, 《APB = 50°and 《CDP= 30°. Then ,《PBA is equal to OPTIONS ???50°,30°,60°,100°

Posted by Sania Mirza 4 years, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Rudra Pratap Singh Somvanshi 4 years, 1 month ago

4Thank You

ANSWER

3x means

Posted by Chitransh Kesharwani 4 years, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

[Vishal Kumar Paswan] [11] 4 years, 1 month ago

"3x" means => 3 multiplied by x or 3*x

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ANSWER

(2-√6)+(6-√2)

Posted by Nihal Gupta 4 years, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Simmi Thakur 4 years, 1 month ago

4.13629669

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Respected sir/mam Today wasy science exam term 1 class 10 and some questions in answers key which is being shared by cbse site were really wrong and same in the case of social science which was held day after science paper so I request you to plz recheck the answer key

Posted by Yashika Yadav 4 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Anshul Binjariya 4 years, 1 month ago

Please send because there was totally confusion in answer key what I have seen in Google so any one have that send fast respected sir /Madam

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Select from the following statement which is true for bases. A-Bases are bitter to taste and turn blue litmus to red B- bases have a photo less than 7 C- bases are sour and change red litmus to blue D- bases turn pink when a drop of phenopthalein is added to them

Posted by Aditya Kumar 4 years, 1 month ago

CBSE > Class 10 > Science

4 answers

Aseem Mahajan 4 years, 1 month ago

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Anshul Binjariya 4 years, 1 month ago

Option d is correct

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Aditya Kumar 4 years, 1 month ago

Thanks

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Shwêtã Árîc 4 years, 1 month ago

Option D is correct.

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ANSWER

Explane G77

Posted by Shweta Kumari 4 years, 1 month ago

CBSE > Class 10 > Social Science

1 answers

Manish Routhan 4 years ago

G77.org. The Group of 77 (G77) at the United Nations is a coalition of 134 developing countries, designed to promote its members' collective economic interests and create an enhanced joint negotiating capacity in the United Nations. Purpose: To provide a forum for developing nations to promote their economic intere... Headquarters: United Nations Headquarters Affiliations: United Nations Founded at: Geneva, Switzerland.

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I need answer key for tamil board paper 2021

Posted by Harini Dhayalan 4 years, 1 month ago

CBSE > Class 10 > Regional Language