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

The genus name is written first in binomial nomenclature starting with a capital letter, whereas the species name comes second and it starts with a small letter.

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Copper vessel loses shine when Cooper sulphate solution

Posted by Ruksar Ansari 5 years, 11 months ago

CBSE > Class 10 > Science

1 answers

Meghna Thapar 5 years, 10 months ago

Copper metal when exposed to air turns green in colour due to corrosion. When copper vessel is exposed to air in rainy season, the metal reacts with gases and moisture and atmospheric gases to form a mixture of copper carbonate and copper hydroxide. This gives a green colour to the surface of copper metal.

The reaction is as follows:

2Cu + H₂O + CO₂ + O₂ → Cu(OH)₂ + CuCO₃

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define resistivity of material ?

Posted by Khushi Patidar 5 years, 11 months ago

CBSE > Class 10 > Science

5 answers

Khushi Patidar 5 years, 11 months ago

thanks all for answer

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Dinesh Kumar 5 years, 11 months ago

Ability to resist the current

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Yogita Ingle 5 years, 11 months ago

Resistivity or specific resistance is resistance of a conducting material of unit length and having unit area of cross section. It is a property of material and depends on nature of material.
SI unit is Ohm-m (Ω.m)

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Monika Kumari 5 years, 11 months ago

It is a characteristic property of a material which decides the resistance and is depend on temperature and nature of material

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Parvej Malik 5 years, 11 months ago

Hlo

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Name any two metals which corrosed eaisily

Posted by Ramavtar Pareek 5 years, 11 months ago

CBSE > Class 10 > Science

4 answers

Dayal Das Jhamnani 5 years, 11 months ago

IRON AND COPPER

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Khushi Patidar 5 years, 11 months ago

cooper and iron

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Aadya Singh ? 5 years, 11 months ago

Aluminium and Iron...

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Raunak Chauhan 5 years, 11 months ago

Copper and alminium

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Koi mere ko kuchh important questions bata do yrrr ??? Science ke

Posted by Rohan Sahani 5 years, 11 months ago

CBSE > Class 10 > Science

2 answers

Aastha Gahlot 5 years, 11 months ago

Every question is important. But for a quick revision u must revise the following topics 1) Activities and experiments of the firt chapter of chemistry 2) Everything about - baking soda - Baustic soda -Washing powder -Plaster of Paris -Bleaching powder From Acids ,bases and salts 3) All reactions of metals and nin metals with - oxygen -hydrogen -acids - bases 4) From carbon and its compounds, all functional groups, isomers, soaps and detergent, oxidation reaction, substitution reaction and combustion are important 5) Since periodic classification is not a chapter of understanding, u will have to mug up all limitations of all the theories of all the scientists.

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Aadya Singh ? 5 years, 11 months ago

Check in this app ?

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On increasing number of coils the resistance of wire increases and thus current reduces. But why then strength of magnetic field increases even current is directly propotional to B. ??

Posted by Yash Yadav 5 years, 11 months ago

CBSE > Class 10 > Science

1 answers

Meghna Thapar 5 years, 10 months ago

The electromagnets could be made strong by increasing the number of turns in the coil and by increasing the current passing through the coil. Hence, the strength of magnetic field generated is proportional to the amount of current through the winding.

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With labeled diagram describe an activity to show that the light and gravity Chang the direction that plant parts grow in

Posted by Suman Kumari 5 years, 11 months ago

CBSE > Class 10 > Science

1 answers

Aastha Gahlot 5 years, 11 months ago

Sorry, a diagram cannot be drawn here? but here u can get an excellent explanation from me Light effects the growth of plant in terms of the direction in which it grows. This is known as phototrophic movement. Then plant gives response to sunlight. The shoot grows towards the light and root grows away from the light. Gravity also effects the direction in which a plant grows. The stimulus is gravity and thia phenomenon is known as geotropism. The root's growth is directed towards centre of gravity, while shoot usually grows upward, away from the surface.

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Define Aperture of MIRROR and lens

Posted by Vidushi Saraw 5 years, 11 months ago

CBSE > Class 10 > Science

1 answers

Aadya Singh ? 5 years, 11 months ago

The total reflecting surface of a mirror or lens...

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Wht Is Apparture

Posted by Vidushi Saraw 5 years, 11 months ago

CBSE > Class 10 > Science

1 answers

Meghna Thapar 5 years, 10 months ago

In optics, an aperture is a hole or an opening through which light travels.

For spherical mirrors of small apertures, the radius of curvature is found to be equal to twice the focal length.

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Kulh's system of irrigation is common in

Posted by Sarit Kumar 5 years, 11 months ago

CBSE > Class 10 > Science

2 answers

Ajay ???? 5 years, 11 months ago

Himachal Pradesh

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Abhinav ? 5 years, 11 months ago

Himachal Pradesh.

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Which of the following bacteria contaminates river water and is found in river Ganga

Posted by Sarit Kumar 5 years, 11 months ago

CBSE > Class 10 > Science

2 answers

Ajay ???? 5 years, 11 months ago

Coliform

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Kanta Malani 5 years, 11 months ago

Coliform bacteria

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What are dominant and recessive trait?

Posted by Ayush Negi 5 years, 11 months ago

CBSE > Class 10 > Science

1 answers

Broken Buddy 5 years, 11 months ago

Dominant traits are the one whoch are abl3 to express themselves over other traits while recessive traits are the one which can only be expressed when they are homozygous

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Ph of gastric juice realeased diring digestion

Posted by Rinku Singh 5 years, 11 months ago

CBSE > Class 10 > Science

13 answers

Broken Buddy 5 years, 11 months ago

Mene schand aaj tk ni pdi aese hi rakhi hui hai????

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Broken Buddy 5 years, 11 months ago

?????

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Aadya Singh ? 5 years, 11 months ago

Maine to pehle s.chand padhi thi...ncert is time padhi maine...???vo bhi only chemistry ???

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Broken Buddy 5 years, 11 months ago

Sirf NCERT ko pdna chaiye isliye acche se fir s chand ???? be triggered????

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Aadya Singh ? 5 years, 11 months ago

Ha...ncert me to 1.2 h ?????mai confuse ho jati hu...jitni jagah diya h...different different answers diye h ???

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Broken Buddy 5 years, 11 months ago

NCERT mai 1.2 hai to kaunsa mana jay?

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Aadya Singh ? 5 years, 11 months ago

But S.Chand me to 1.4 diya h...maine bhi abhi dekha ???

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Broken Buddy 5 years, 11 months ago

1.2 hi hai pdne ki zarurat nhi ab??????????

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Broken Buddy 5 years, 11 months ago

Check krta hu

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Aadya Singh ? 5 years, 11 months ago

Kya pta...mera hi galat ho ???

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Broken Buddy 5 years, 11 months ago

Lagta hai pdna padega meko????

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Aadya Singh ? 5 years, 11 months ago

1.4

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Broken Buddy 5 years, 11 months ago

1.2

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Number of electrons in the nucleus of 276uranium92 atom ?

Posted by Aas Singh 5 years, 11 months ago

CBSE > Class 10 > Science

7 answers

Broken Buddy 5 years, 11 months ago

Thanx????

2Thank You

Aas Singh 5 years, 11 months ago

Haaa bhai smart answer..

1Thank You

Broken Buddy 5 years, 11 months ago

Sm@j gya??? 0 answer haina???

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Aas Singh 5 years, 11 months ago

Read question carefully...its interesting???

1Thank You

Broken Buddy 5 years, 11 months ago

Ohh sorry ? yes yes why not

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Aas Singh 5 years, 11 months ago

May I give u a hint...since the answer is incorrect

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Broken Buddy 5 years, 11 months ago

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The shiny finish of wall after white wash is because of

Posted by Aradhana Singh 5 years, 11 months ago

CBSE > Class 10 > Science

1 answers

Broken Buddy 5 years, 11 months ago

Formation of calcium carbonate(CaCO₃ after whitewashing

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Why does the cord of an electric oven not glow while is heating element does

Posted by Anjali Jaiswal 5 years, 11 months ago

CBSE > Class 10 > Science

4 answers

Broken Buddy 5 years, 11 months ago

Kyuki resistance bdne se I km hota hai lekin heat dono k proportional hai . To resistance bdne se heat km kyu ni hoti ?

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Broken Buddy 5 years, 11 months ago

Ye merko samaj ni aata isme confusion hai

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Broken Buddy 5 years, 11 months ago

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Aadya Singh ? 5 years, 11 months ago

Because the resistance of cord is low so it doesn't glow while the resistance of heating element has a high resistance so when current flow through the heating element, it becomes too hot and glow red...

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What is the by product of photosynthesis ?

Posted by Punam Kumari 5 years, 11 months ago

CBSE > Class 10 > Science

7 answers

Tanishq Ruhela 5 years, 11 months ago

6CO2+12H2O---sunlight---chlorophyll----->C6H12O6+6O2+6H2O

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Broken Buddy 5 years, 11 months ago

Hota hai lekin low amout mai day mai wo use v honjata hai dubara

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Aadya Singh ? 5 years, 11 months ago

Bro...CO2 isn't the by product..?

2Thank You

Broken Buddy 5 years, 11 months ago

Oxygen and carbon dioxide

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Apram Sachdeva 5 years, 11 months ago

Oxygen carbon dioxide

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Naruto Uzumaki??? 5 years, 11 months ago

O2 or oxygen

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Aadya Singh ? 5 years, 11 months ago

Oxygen..

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What is the meaning of solder

Posted by Tripti Singhania 5 years, 11 months ago

CBSE > Class 10 > Science

2 answers

Deepak Kashyap 5 years, 11 months ago

Hii

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Aadya Singh ? 5 years, 11 months ago

It is an alloy of tin and lead..

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What is resistivity ??

Posted by ????? ?????? 5 years, 11 months ago

CBSE > Class 10 > Science

1 answers

Tarif Deswal 5 years, 11 months ago

Resustivity is the resistance offered by a conductor of unit length and unit area of cross section. Si unit of resistivity is ohm metre

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What is a progany

Posted by Uzaib Malik 5 years, 11 months ago

CBSE > Class 10 > Science

1 answers

Pk . 5 years, 11 months ago

A new born baby

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Which mirror is used in headlights

Posted by Megha Agarwal 5 years, 11 months ago

CBSE > Class 10 > Science

5 answers

Megha Agarwal 5 years, 11 months ago

Concave mirror is a converging mirror You are wrong 'Shivam Samrat Shukla'

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Tanishq Ruhela 5 years, 11 months ago

To focus all the light rays on same point due to its reflection part.

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♛ ❝Ѕυнαɴα❞ ♛ 5 years, 11 months ago

Concave mirror...

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Shivam Samrat Shukla 5 years, 11 months ago

Concave because it is a diverging mirror

2Thank You

Miss. 1234 5 years, 11 months ago

concave

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बिजली के तारों पर पीवीसी के पर क्यों चढ़ाई जाती है

Posted by Kiran Yadav 5 years, 11 months ago

CBSE > Class 10 > Science

1 answers

Diksha? 5 years, 11 months ago

Kyuki PVC electric insulator h jisse current pass ni ho skti

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What is the observation in the experiment to study the comparative cleaning capacity of a sample of soap in soft and hard water?

Posted by Tamanna Dahiya 5 years, 11 months ago

CBSE > Class 10 > Science

1 answers

Diksha? 5 years, 11 months ago

Soap works in soft water but it does not work in hard water. In hard water it form scrum

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What do you mean by inheritance?

Posted by Astha Mishra 5 years, 11 months ago

CBSE > Class 10 > Science

3 answers

Yatin Gautam 5 years, 11 months ago

Character transfer from parents to offsprings

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Tahaseen Khan 5 years, 11 months ago

The characteres which we gt from our parents pass to other generations

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Kaju Kaju 5 years, 11 months ago

Inheritance is the transmission of genetically controlled characteristics from one generation to next generation..

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What is fps

Posted by Ansh Tyagi 5 years, 11 months ago

CBSE > Class 10 > Science

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Formula of Nitric Acid

Posted by Vishal Ghorela V 5 years, 11 months ago

CBSE > Class 10 > Science

4 answers

Yatin Gautam 5 years, 11 months ago

HNO3

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Sonu Rawat 5 years, 11 months ago

HNO3

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Gowtham Gupta123 5 years, 11 months ago

Hno3

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Shreya Sharma?? 5 years, 11 months ago

HNO3

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Why Mendeleev's choice of formulae of compounds as the basis for deciding the position of an element in his Table was a good one and how would this lead to elements with similar chemical properties being placed in same group...????

Posted by Aadya Singh ? 5 years, 11 months ago

CBSE > Class 10 > Science

2 answers

Aadya Singh ? 5 years, 11 months ago

Thanks...??

3Thank You

Diksha? 5 years, 11 months ago

Elements with similar chemical properties will react in a similar manner with hydrogen and oxygen. The converse is also true. If some elements form similar compounds,with the same basic formula(for eg with oxygen and hydrogen),then the elements will have similar chemical properties. So elements witb the same molecular formula will come under the same group and because of their same formula,they will have similar properties?

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The ph of a salt used to make tasty and crispy pakoras is 14. Identify the salt write a equation for its formation. List two uses .

Posted by ????? ?????? 5 years, 11 months ago

CBSE > Class 10 > Science