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Henry Mosley prepared modern periodic table in 1913 ... His achievements are fixed place for isotopes and hydogen... Noble gases were placed without disturbing the existing order and in his periodic 63 elements are placed and elements should be placed on the basis of atomic number

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Aman Kumar 4 years, 11 months ago

Nope

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Rajat Arora 4 years, 11 months ago

Henry Mosley and Neil's Bohr prepared modern periodic table

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Explain soap and detergent

Posted by Rajat Arora 4 years, 11 months ago

CBSE > Class 10 > Science

2 answers

Mahak Sadhya 4 years, 11 months ago

This is not in syllabus

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Keshav Yadav 4 years, 11 months ago

Both soap and detergent are cleaning agents but main difference between both is that detergent react with hard water but soap cannot.

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Types of covalent bond?

Posted by Rajat Arora 4 years, 11 months ago

CBSE > Class 10 > Science

3 answers

Rishika Malu 4 years, 11 months ago

Single bond Double bond Triple bond

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Juweriya Azahar 4 years, 11 months ago

Single double and triple

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Sakshi Sahani 4 years, 11 months ago

Single covalent, double covalent and triple covalent bond

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Write the balanced equation for barium chloride + aluminium sulphate gives barium sulphate + aluminium

Posted by Latchen Doma Sherpa 4 years, 11 months ago

CBSE > Class 10 > Science

3 answers

Latchen Doma Sherpa 4 years, 9 months ago

What are the development in history?

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Prateeek Chauhan 4 years, 11 months ago

3BaCl2 + Al2(SO4)3 ------> 3BaSO4 + 2AlCl3.

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Sheetal Kumari 4 years, 11 months ago

BaCl2+Ag (So4)2-------- BaSo4+ Ag Cl2

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Kaisa make kare digestive system

Posted by Akash Singh 4 years, 11 months ago

CBSE > Class 10 > Science

2 answers

Oye. Dipanshi 4 years, 11 months ago

pencil se?

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Ashish Kumar 4 years, 11 months ago

Pencil , hath se aur kaise

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ANSWER

Why electric current is called conventional current??

Posted by Abhilasha Akanksha 4 years, 11 months ago

CBSE > Class 10 > Science

1 answers

Prateeek Chauhan 4 years, 11 months ago

Because, a long time back when electricity was discovered,it was known that there are two types of charges(positive charge and negative charge). But electron had not been discovered at that time. So, electricity was considered to be the flow of positive charges (proton) and the direction flow of positive charges was taken to be the direction of electric current.

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Differences between series parallel connection

Posted by Gunnidhi Khaneja 4 years, 11 months ago

CBSE > Class 10 > Science

2 answers

Divyansh Singh Rajawat 4 years, 11 months ago

Series combination is method.when appliances are connected in a single wire . It is harmful because when in series if fault occur all circuit will off.but in comparison of series and parallel combination . parallel combination is best

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Abhilasha Akanksha 4 years, 11 months ago

Series combination is the method of combination of resistors in which all the resistors are combined in such a way that the sum of potential difference of all the resistors is equal to the potential difference of the circuit, and electric current flows through each resistors is same that flows through the circuit. While, Parallel combination is the method of combination of resistors in which all resistors are combined in such a way that potential difference of the circuit is same as that of each resistors and the sum of electric current flows through all the resistors is equal to electric current flows in the circuit.

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Ionic bond and covalent bond?

Posted by Rajat Arora 4 years, 11 months ago

CBSE > Class 10 > Science

2 answers

Divyansh Singh Rajawat 4 years, 11 months ago

In a easy definition ...Ionic bond = the bond that are formed by the reaction of metal with non metals and covalent bond=the bond that form by the reaction of metal with metal

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Laxmi Narayan 4 years, 11 months ago

Ionic bond An ionic bond is a type of chemical bond formed through an electrostatic attraction between two oppositely charged ions. Ionic bonds are formed between a cation, which is usually a metal, and an anion, which is usually a nonmetal. Pure ionic bonding cannot exist: all ionic compounds have some degree of covalent bonding. Thus, an ionic bond is considered a bond where the ionic character is greater than the covalent character. The larger the difference in electronegativity between the two atoms involved in the bond, the more ionic (polar) the bond is. Bonds with partially ionic and partially covalent character are called polar covalent bonds. Formation of Sodium Flouride The attraction of oppositely charged atoms and the transfer of electrons leads to the formation of an ionic compound. In this case, NaF. Covalent Bonds A covalent bond involves electrons being shared between atoms. The most stable state for an atom occurs when its valence electron shell is full, so atoms form covalent bonds, sharing their valence electrons, so that they achieve a more stable state by filling their valence electron shell.

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When will cbse relased datesheet by subject wish

Posted by Arpit Bhardwaj 4 years, 11 months ago

CBSE > Class 10 > Science

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ANSWER

Ph full form

Posted by Vinay Veer 4 years, 11 months ago

CBSE > Class 10 > Science

5 answers

Latchen Doma Sherpa 4 years, 11 months ago

Potential of hydrogen / power of hydrogen

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Laxmi Narayan 4 years, 11 months ago

Full form of PH is Power of Hydrogen

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Mary Stuart 4 years, 11 months ago

Potenz means power

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Maheep Thugzz 4 years, 11 months ago

Potenz height (Latin word of German )

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Rajat Arora 4 years, 11 months ago

Potenz de hydrogen

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ANSWER

What is the full form of pH??

Posted by Bhavesh Singh Panwar 4 years, 11 months ago

CBSE > Class 10 > Science

4 answers

Pawan Kumari 4 years, 11 months ago

Power of hydrogen

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Yashika B. 4 years, 11 months ago

Full form of pH is 'potential of hydrogen' or 'power of hydrogen'.

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Laxmi Narayan 4 years, 11 months ago

Full form of PH is Power of Hydrogen

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Amit Kumar 4 years, 11 months ago

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ANSWER

Explain food web briefly

Posted by Hirendra Garg?? 4 years, 11 months ago

CBSE > Class 10 > Science

3 answers

Divyansh Singh Rajawat 4 years, 11 months ago

In an easy definition . The food material that are eaten by many organism make a web .example ....Rat . It is a meal of ? as well as ? so it is web

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Rajat Arora 4 years, 11 months ago

The network of large number of food chain existing in an ecosystem it is called food web.

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Aaryan Sompura 4 years, 11 months ago

zask321

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What is the definition of acid

Posted by Ankit Giri 4 years, 11 months ago

CBSE > Class 10 > Science

3 answers

Jahanvi Yadav 4 years, 11 months ago

The substance which give H+ ions in aqueous solution... pH is less than 7 turns blue litmus into red

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Harsh Nayak 4 years, 11 months ago

They release H+ ions in an aqueous solution

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Mashhad Shabir 4 years, 11 months ago

The sour substance when dissolved in water releases H+ ions is called acid

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ANSWER

Example of photo decomposition reaction

Posted by Shaila Qureshi 4 years, 11 months ago

CBSE > Class 10 > Science

2 answers

Ajay Tiwari 4 years, 11 months ago

AgBr - AG + Br

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Rajveer Mandal 4 years, 11 months ago

When a decomposition reaction is carried out by the action of light energy it is called as photolytic reaction or photo decomposition reaction . Example : 2AgCl ---> 2Ag + Cl2

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What is a phiscal change

Posted by Pankaj Gola 4 years, 11 months ago

CBSE > Class 10 > Science

1 answers

Mashhad Shabir 4 years, 11 months ago

The change which is done physically Or we can say which is real

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What is hybridisation

Posted by Dipesh Kumar 4 years, 11 months ago

CBSE > Class 10 > Science

2 answers

シ︎?_?_?_?_? シ︎ 4 years, 11 months ago

//The crossing between two different variety to the quality by new plantis is called hybridization//

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Vinay Gautam 4 years, 11 months ago

hybridisation is a process of cross breading of two plants or you can say cross intersecting between two different plants

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Prism equation

Posted by Manveer Sran 4 years, 11 months ago

CBSE > Class 10 > Science

1 answers

Mary Stuart 4 years, 11 months ago

What u mean by this

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Explain the mechanism of determination of s*x of a baby in humans

Posted by Aman Kumar 4 years, 11 months ago

CBSE > Class 10 > Science

2 answers

Mary Stuart 4 years, 11 months ago

The gender of a baby is dependent on the father not on the MOTHER It's nothing it's Nature

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シ︎?_?_?_?_? シ︎ 4 years, 11 months ago

????? ?????? ???? ??_?? ??? ???????????? ??????. ?? ????, ??? ???? ???? ?? ??? ???????????.???? ??????? ??? ???? ?? ??????? ?????? ? ??? ? ???????????.??? ?????? ???? ?? ???????????.???? ??????? ???? ??? ???? ?? ??????? ?????? ? ???????????.??? ??? ?? ? ????? ?? ?????????? ?? ??? ???? ?? ??????????? ??/??? ????????? ???? ??????.?? ????? ?? ??????? ???????????, ???? ??? ????? ???? ?? ? ????.?? ????? ?? ?????? ? ??????????? ???? ??? ????? ???? ?? ? ???.??? ? ??????????? ??????? ? ?????? ??????????? ??? ?????????? ???? ???????????.??? ? ?????????? ??????? ?????? ??????????? ??? ?????????? ?????? ???????????.???????

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How can we identify whit traits is dominant and which one is recessive?

Posted by Aman Kumar 4 years, 11 months ago

CBSE > Class 10 > Science

2 answers

Kiran Kumari 4 years, 11 months ago

For example round seed and wrinkles seed In this round seed is dominant because it is more and easily available and wrinkles seeds are rare and it is recessive

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Kanishka Varshney 4 years, 11 months ago

For example Tt is a trait so T is a dominant ,t is a recessive

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How traits gets expressed?

Posted by Aman Kumar 4 years, 6 months ago

CBSE > Class 10 > Science

1 answers

Sia ? 4 years, 6 months ago

The proteins in the cell are made up of information coded in the cellular DNA. A segment of this DNA provides information for one protein and is called a gene for that protein. These genes influence traits.

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State the mendel's law of inheritance

Posted by Aman Kumar 4 years, 11 months ago

CBSE > Class 10 > Science

1 answers

Laxmi Narayan 4 years, 11 months ago

Mendel's Laws of inheritance can be described as; 1. The Law of Dominance: The offspring always exhibits a dominant trait. From the two alleles received from parents, the only dominant allele is expressed. 2. The Law of Segregation: The two copies of each chromosome will be separated from each other, causing the two distinct alleles located on those chromosomes to segregate from one another. 3. The Law of Independent Assortment: The traits inherited through one gene will be inherited independently of the traits inherited through another gene because the genes reside on different chromosomes that are independently assorted into daughter cells during meiosis.

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How father is responsible for the determination of *** of the baby

Posted by Aman Kumar 4 years, 11 months ago

CBSE > Class 10 > Science

2 answers

Himanshu Rajput 4 years, 11 months ago

Right

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Aditi Singh 4 years, 11 months ago

Father gives XY chromosomes whereas mother gives XX chromosomes which result in either a baby boy (XY) or a baby girl (XX).So we can say that there is a 50% chances of both baby boy or girl.And for the *** father is responsible.

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2021 revision notes for class 10th

Posted by Sangeeta Kumari 4 years, 11 months ago

CBSE > Class 10 > Science