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Chemistry 3 chapter

Posted by Kumkum Saini 1 year ago

CBSE > Class 10 > Science

2 answers

Kim John 1 year ago

The process of coating iron with zinc to protect it from further rusting is called galvanization

Jivan Sahu 1 year ago

What is galvilization

ANSWER

Please can I get notes of sustainable development of natural resources

Posted by Alish Madhani 1 year ago

CBSE > Class 10 > Science

1 answers

Raj Kourav 11 months, 2 weeks ago

Sustainable development of natural resources involves ensuring their use meets present needs without compromising future generations. It entails practices like responsible extraction, renewable energy promotion, biodiversity conservation, and efficient resource utilization to maintain ecological balance and meet societal needs without depletion or harm.

ANSWER

HCBr2 CCH3 C2H5 CH2 CCCH3

Posted by Kajal Kumari Kajal Kumari 1 year ago

CBSE > Class 10 > Science

0 answers

ANSWER

Why sulphuric acid is called king of chemicals.?

Posted by Sakshi Sharma 1 year ago

CBSE > Class 10 > Science

5 answers

Ankesh Kashyap 11 months, 4 weeks ago

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Harshita Chaurasiya 1 year ago

Because it is used in the preparation of many other compounds & it is highly use in industries too.

Siddhi Pawar 1 year ago

because it is a highly reactive acid that it can even dissolve other acids.

Sharan Sunny 1 year ago

How many bonds formed pentane

Isha Tyagi 1 year ago

Because this is more power ful in acidic nature

ANSWER

What is green vitriol and blue vitriol?

Posted by Sakshi Sharma 1 year ago

CBSE > Class 10 > Science

2 answers

Prevail Uh 1 year ago

Blue vitriol is basically CuSO4 and green vitriol is FeSO4 basically SO4 are vitriol if you want to remember and FeSo4 is green solution and CuSO4 is blue solution. Just a trick to learn 😀

Harshita Chaurasiya 1 year ago

Blue vitriol is CuSO4 (Copper Sulphate) & green vitriol is FeSO4 (Ferrous Sulphate)

ANSWER

What are acquired trails?Why are these trails generally not inherited over generations? Explain

Posted by Rabina Sinha 1 year ago

CBSE > Class 10 > Science

2 answers

Rudrevinod Rudrevinod 11 months, 4 weeks ago

But this is deleted topics right?

Sakshi Tiwari Sakshi Tiwari 1 year ago

Acquired traits are the traits which are adopted by the lifetime These traits generally not inherited over generations because it does not involve the change in DNA

ANSWER

What is the height of ozone from the equator

Posted by P A 1 year ago

CBSE > Class 10 > Science

1 answers

Krishna Rawal 1 year ago

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ANSWER

Write two methods to reduce the use of pesticides

Posted by P A 1 year ago

CBSE > Class 10 > Science

1 answers

Sakshi Sharma 1 year ago

• Try using non-chemical management methods on your lawn and garden, such as introducing beneficial insects and wild, native plants, or use physical methods, including hand weeding, mulching, or setting traps, to reduce chemical use outdoors. • Use mechanical traps (snap traps, sticky traps) and flyswatters inside.

ANSWER

What is mean by refining

Posted by Tokyo Bro 1 year ago

CBSE > Class 10 > Science

2 answers

Jagmohan Singh 1 year ago

In depth:- If refining is defined then it can be said that the metal which you have obtained from extraction Then obtaining it's most purest form.

Krish Yadav 1 year ago

The purification of any raw material to a useful material is known as refining

ANSWER

mixes an aqueous solution of sodium sulphate (Na, S*O_{4}) and an aqueous solution of copper chloride (CuCL) Will this lead to a double displacement reaction? Justify your answer

Posted by Faizan Tamboli 1 year ago

CBSE > Class 10 > Science

2 answers

Prevail Uh 1 year ago

It will lead to reactivity since Na is more reactive than Cu and will displace CuCl2 and form NaCl while Copper will form Copper Sulphate solution

Shreya Verma 1 year ago

Yes , it can be a double displacement reaction because in order to reactivity series Na is more reactive than Cu so it can displace Cu from CuCl and form Nacl

ANSWER

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Posted by Mayank Kaushik 1 year ago

CBSE > Class 10 > Science

1 answers

Mayank Sharma 1 year ago

Yes

ANSWER

Please help me give me photo of any chapter mind map. Easy and draw into a4 size sheet

Posted by Kaptan Singh 1 year ago

CBSE > Class 10 > Science

1 answers

Bharathi Devi Munagala 11 months, 3 weeks ago

Read textbooks thoroughly and then you can easily draw any mind map in your brain. Then there will be no need for an a4 sheet and spend ₹1.

ANSWER

What is the chemical formula of sodium bicarbonate

Posted by Sanskrati Tomar 1 year ago

CBSE > Class 10 > Science

5 answers

Jagriti 💖💕💞💞💖💖😎😎🥰🥰🥰 1 year ago

NaHCO3

Gurjot Kaur 1 year ago

NaHCO3

Sameer Singh Shakya 1 year ago

Naco3

Komal Yadav 1 year ago

Nahco3

Piyalee Tapan Dey 1 year ago

NaHCO3

ANSWER

What is the name of CH3

Posted by Saksham Chauhan 1 year ago

CBSE > Class 10 > Science

5 answers

Kristina Jaura 1 year ago

Ammonia

Gurjot Kaur 1 year ago

Metane ; Alkane ; Alkyl group=Methyl

Komal Yadav 1 year ago

Methane

Piyalee Tapan Dey 1 year ago

Methyl

Sanskrati Tomar 1 year ago

It's methane

ANSWER

Chapter 4 carbon and it's compounds noted

Posted by Sariki Joshitha Joshitha 1 year ago

CBSE > Class 10 > Science

0 answers

ANSWER

write about acquired and inherited traits

Posted by Anushka Sharma 1 year ago

CBSE > Class 10 > Science

2 answers

Haripriya K 1 year ago

Acquired traits are not inherited from parents and we ourself makes these knowledges...while Inherited traits are passed by generations and inherited from parents

Aishpreet Kaur 1 year ago

Acquired traits are not inherited from parents whereas inherited traits are influenced by parents characteristics Acquired traits example - swimming, knowledge of any topic Inherited traits example - colour of eyes, hair colour

ANSWER

What is Catenation ? (Ch 4 Chemistry)

Posted by Gurjot Kaur 1 year ago

CBSE > Class 10 > Science

3 answers

Sariki Joshitha Joshitha 1 year ago

The property to form compounds with long chains and rings of identical atoms is called catenation

Arushi Shukla 1 year ago

Self linking property of carbon is known as Catenation

Sujal Kumar 1 year ago

Interlinking property is known as catenation

ANSWER

1Q. What is flux? 2Q. What happens when flux added with gangue?

Posted by R@Ksh@ . 1 year ago

CBSE > Class 10 > Science

2 answers

R@Ksh@ . 11 months, 2 weeks ago

But this question is from chemistry then spinal nerve how?

Manthan Vaghela 1 year ago

A - 1 When two spinal nerve meet at a place

ANSWER

Why thermal power points are set up near coal fields?

Posted by Mohit Gothwal 1 year ago

CBSE > Class 10 > Science

1 answers

Rohit Kushwah 1 year ago

How can ethana

ANSWER

How can you say that in Mendel's monohybrid cross, the F2 dominants are not all same?

Posted by Anshika Sangwan 1 year ago

CBSE > Class 10 > Science

2 answers

Bharathi Devi Munagala 11 months, 3 weeks ago

First, Mendel took pure tall pea plant(TT) and pure dwarf pea plant (tt). Then he crossed pure tall with pure dwarf. In the F1 generation, all are tall plants (Tt). When these plants are self pollinated, we get the results as TT, Tt, Tt, tt. In this three are tall and one is small. So the phenotype ratio is 3:1.But if we say the genotype ratio, we must consider the following: Homogenous Tall (TT) : 1 Heterogeneous Tall (Tt) :2 Homogenous Dwarf(tt) : 1 Hence, the genotype ratio is 1:2:1.

Priyesh Kumar 1 year ago

F2 Phenotypically same but genotypically they are of two type dominant &recessive.

ANSWER

How is a virtual image formed by a convex lens different from that formed by a concave lens? Under construction what conditions do a convex and a concave lens from a virtual image

Posted by Shiyari Debbarma 1 year ago

CBSE > Class 10 > Science

1 answers

Bariya Bariya 1 year ago

No

ANSWER

State the basis on which the *** of newborn baby is determined in humans

Posted by Shiyari Debbarma 1 year ago

CBSE > Class 10 > Science

1 answers

Sanskrati Tomar 1 year ago

By the process of *** determination

ANSWER

How is the original number of chromosomes present in the parents restored in the progency?

Posted by Shiyari Debbarma 1 year ago

CBSE > Class 10 > Science

4 answers

Nancy Anand 1 year ago

With the help of haploid cells i.e. sperm cell and ovum having 23 chromosomes each. When fertilization takes place, both the cells fuse and form a zygote of total 46 chromosomes or a pair of 23 chromosomes. Hence the original number (2n) is restored in the progeny

Muskan Negi 1 year ago

42

Dikchika Gurung 1 year ago

42

Priyesh Kumar 1 year ago

42

ANSWER

Case-based Question -1 Read the following and answer any four questions: Salt of a strong acid and strong base is neutral with a pH value of 7. NaCl common salt is formed by a combination of hydrochloride and sodium hydroxide solution. This is the salt that is used in food. Some salt is called rock salt bed of rack salt was formed when seas of bygone ages dried up. The common salt thus obtained is an important raw material for various materials of daily use, such as sodium hydroxide, baking soda, washing soda, and bleaching powder. Which of the following does not form an acidic salt? Phosphoric acid Carbonic acid Hydrochloric acid Sulphuric acid Which of the following salts has no water of crystallization? Blue vitriol Washing soda Baking soda Gypsum The formula of baking soda is K2CO KHCO3 NaHCO3 Na2CO3 Which of the following is treated with chlorine to obtain bleaching powder CaSO4 Ca(OH)2 Mg(OH)2 KOH Which of the following salt is used for removing the permanent hardness of water Washing soda Baking soda Bleaching powder NaOH

Posted by Uma Shankar 1 year ago

CBSE > Class 10 > Science

1 answers

Wdym Bruj 1 year ago

1) phosphoric acid 2) blue vitrol 3) NahCo3 4) ca(oh)2 5) washing soda

ANSWER

Explain double fertilization with the help of diagram

Posted by Vedita Gorana 1 year ago

CBSE > Class 10 > Science

1 answers

Simran Yadav 1 year ago

Double fertilization when the anther releases two pollen grains (male germ cells) They travel through pollen tube and one get fused with female germ cell and another get fuse with polar nuclei and forms endosperm a food storing tissue. This process is called fertilisation

ANSWER

which them cannot be major factor speciation of self pollating plant species

Posted by Tanya Dwivedi 1 year ago

CBSE > Class 10 > Science

1 answers

Mohit Gothwal 1 year ago

Geographical isolation cannot be the major factor in speciation because no new trait is added to genetic material in self-pollinating categorized plant species.

ANSWER

what is the exact no. of neuron in a human body

Posted by Priyanshi Joshi 1 year ago

CBSE > Class 10 > Science

3 answers

Ansh Gupta 11 months, 4 weeks ago

You can't exactly count how much are they. They are billions in number.

Manthan Vaghela 1 year ago

31 Pairs of spinal nerve and 12 pairs of cranial nerve

Haripriya K 1 year ago

There are millions of neurons...

ANSWER

Chapter 9 heridity exercise answer

Posted by Himanshi Verma 1 year ago

CBSE > Class 10 > Science

1 answers

Muskan Negi 1 year ago

This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html

Few rules to keep homework help section safe, clean and informative.

Don't post personal information, mobile numbers and other details.
Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying.
Ask specific question which are clear and concise.

Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions.

ANSWER

Name the mirror that give erect and enlarged image of Object

Posted by Mohit Gothwal 1 year ago

CBSE > Class 10 > Science

3 answers

Jagriti 💖💕💞💞💖💖😎😎🥰🥰🥰 1 year ago

Concave mirror when the object is placed between pole P and focus F

Tejasvi 7 1 year ago

A Concave mirror gives a virtual, erect and enlarged image of an object (remember the 6th case). Even though convex mirror always forms virtual and erect image of the object, it never forms enlarged image. It always forms diminished image. So the answer is Concave Mirror.

Bhim Sain Bhimsain 1 year ago

Convex

ANSWER

If the potential difference across the two ends of a conductor is 5 V and the current through it is 0.2 A, then what is the resistance of the conductor?

Posted by Kartik Ghare 1 year ago

CBSE > Class 10 > Science

4 answers

Bharathi Devi Munagala 11 months, 3 weeks ago

Given, Potential Difference (V) =5V Current (I) = 0.2A By Ohm's law, R=V/I R=5/0.2 R=25 ohms

Prem Sagar 1 year ago

25 ohm

Priyanshi Patel 1 year ago

25 ohm

Raj Baranwal 1 year ago

25

ANSWER

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