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 6 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Meghna Thapar 6 years, 1 month 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 6 years, 1 month ago

CBSE > Class 10 > Science

5 answers

Khushi Patidar 6 years, 1 month ago

thanks all for answer

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Dinesh Kumar 6 years, 1 month ago

Ability to resist the current

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Yogita Ingle 6 years, 1 month 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 6 years, 1 month 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 6 years, 1 month ago

Hlo

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Name any two metals which corrosed eaisily

Posted by Ramavtar Pareek 6 years, 1 month ago

CBSE > Class 10 > Science

4 answers

Dayal Das Jhamnani 6 years, 1 month ago

IRON AND COPPER

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Khushi Patidar 6 years, 1 month ago

cooper and iron

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Aadya Singh ? 6 years, 1 month ago

Aluminium and Iron...

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Raunak Chauhan 6 years, 1 month ago

Copper and alminium

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

Posted by Rohan Sahani 6 years, 1 month ago

CBSE > Class 10 > Science

2 answers

Aastha Gahlot 6 years, 1 month 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 ? 6 years, 1 month 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 6 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Meghna Thapar 6 years, 1 month 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 6 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Aastha Gahlot 6 years, 1 month 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 6 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Aadya Singh ? 6 years, 1 month ago

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

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Wht Is Apparture

Posted by Vidushi Saraw 6 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Meghna Thapar 6 years, 1 month 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 6 years, 1 month ago

CBSE > Class 10 > Science

2 answers

Ajay ???? 6 years, 1 month ago

Himachal Pradesh

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Abhinav ? 6 years, 1 month 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 6 years, 1 month ago

CBSE > Class 10 > Science

2 answers

Ajay ???? 6 years, 1 month ago

Coliform

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Kanta Malani 6 years, 1 month ago

Coliform bacteria

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What are dominant and recessive trait?

Posted by Ayush Negi 6 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Broken Buddy 6 years, 1 month 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 6 years, 1 month ago

CBSE > Class 10 > Science

13 answers

Broken Buddy 6 years, 1 month ago

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

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Broken Buddy 6 years, 1 month ago

?????

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Aadya Singh ? 6 years, 1 month ago

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

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Broken Buddy 6 years, 1 month ago

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

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Aadya Singh ? 6 years, 1 month 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 6 years, 1 month ago

NCERT mai 1.2 hai to kaunsa mana jay?

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Aadya Singh ? 6 years, 1 month ago

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

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Broken Buddy 6 years, 1 month ago

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

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Broken Buddy 6 years, 1 month ago

Check krta hu

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Aadya Singh ? 6 years, 1 month ago

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

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Broken Buddy 6 years, 1 month ago

Lagta hai pdna padega meko????

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Aadya Singh ? 6 years, 1 month ago

1.4

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Broken Buddy 6 years, 1 month ago

1.2

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Number of electrons in the nucleus of 276uranium92 atom ?

Posted by Aas Singh 6 years, 1 month ago

CBSE > Class 10 > Science

7 answers

Broken Buddy 6 years, 1 month ago

Thanx????

2Thank You

Aas Singh 6 years, 1 month ago

Haaa bhai smart answer..

1Thank You

Broken Buddy 6 years, 1 month ago

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

1Thank You

Aas Singh 6 years, 1 month ago

Read question carefully...its interesting???

1Thank You

Broken Buddy 6 years, 1 month ago

Ohh sorry ? yes yes why not

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Aas Singh 6 years, 1 month ago

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

1Thank You

Broken Buddy 6 years, 1 month ago

0Thank You

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The shiny finish of wall after white wash is because of

Posted by Aradhana Singh 6 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Broken Buddy 6 years, 1 month 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 6 years, 1 month ago

CBSE > Class 10 > Science

4 answers

Broken Buddy 6 years, 1 month 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 6 years, 1 month ago

Ye merko samaj ni aata isme confusion hai

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Broken Buddy 6 years, 1 month ago

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Aadya Singh ? 6 years, 1 month 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 6 years, 1 month ago

CBSE > Class 10 > Science

7 answers

Tanishq Ruhela 6 years, 1 month ago

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

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Broken Buddy 6 years, 1 month ago

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

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Aadya Singh ? 6 years, 1 month ago

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

2Thank You

Broken Buddy 6 years, 1 month ago

Oxygen and carbon dioxide

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Apram Sachdeva 6 years, 1 month ago

Oxygen carbon dioxide

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Naruto Uzumaki??? 6 years, 1 month ago

O2 or oxygen

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Aadya Singh ? 6 years, 1 month ago

Oxygen..

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What is the meaning of solder

Posted by Tripti Singhania 6 years, 1 month ago

CBSE > Class 10 > Science

2 answers

Deepak Kashyap 6 years, 1 month ago

Hii

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Aadya Singh ? 6 years, 1 month ago

It is an alloy of tin and lead..

3Thank You

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What is resistivity ??

Posted by ????? ?????? 6 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Tarif Deswal 6 years, 1 month 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 6 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Pk . 6 years, 1 month ago

A new born baby

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Which mirror is used in headlights

Posted by Megha Agarwal 6 years, 1 month ago

CBSE > Class 10 > Science

5 answers

Megha Agarwal 6 years, 1 month ago

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

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Tanishq Ruhela 6 years, 1 month ago

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

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♛ ❝Ѕυнαɴα❞ ♛ 6 years, 1 month ago

Concave mirror...

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Shivam Samrat Shukla 6 years, 1 month ago

Concave because it is a diverging mirror

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Miss. 1234 6 years, 1 month ago

concave

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बिजली के तारों पर पीवीसी के पर क्यों चढ़ाई जाती है

Posted by Kiran Yadav 6 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Diksha? 6 years, 1 month 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 6 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Diksha? 6 years, 1 month 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 6 years, 1 month ago

CBSE > Class 10 > Science

3 answers

Yatin Gautam 6 years, 1 month ago

Character transfer from parents to offsprings

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Tahaseen Khan 6 years, 1 month ago

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

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Kaju Kaju 6 years, 1 month 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 6 years, 1 month ago

CBSE > Class 10 > Science

0 answers

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Formula of Nitric Acid

Posted by Vishal Ghorela V 6 years, 1 month ago

CBSE > Class 10 > Science

4 answers

Yatin Gautam 6 years, 1 month ago

HNO3

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Sonu Rawat 6 years, 1 month ago

HNO3

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Gowtham Gupta123 6 years, 1 month ago

Hno3

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Shreya Sharma?? 6 years, 1 month 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 ? 6 years, 1 month ago

CBSE > Class 10 > Science

2 answers

Aadya Singh ? 6 years, 1 month ago

Thanks...??

3Thank You

Diksha? 6 years, 1 month 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 ????? ?????? 6 years, 1 month ago

CBSE > Class 10 > Science