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

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

0Thank You

Aman Kumar 5 years ago

Nope

0Thank You

Rajat Arora 5 years ago

Henry Mosley and Neil's Bohr prepared modern periodic table

2Thank You

ANSWER

Explain soap and detergent

Posted by Rajat Arora 5 years ago

CBSE > Class 10 > Science

2 answers

Mahak Sadhya 5 years ago

This is not in syllabus

0Thank You

Keshav Yadav 5 years ago

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

1Thank You

ANSWER

Types of covalent bond?

Posted by Rajat Arora 5 years ago

CBSE > Class 10 > Science

3 answers

Rishika Malu 5 years ago

Single bond Double bond Triple bond

1Thank You

Juweriya Azahar 5 years ago

Single double and triple

1Thank You

Sakshi Sahani 5 years ago

Single covalent, double covalent and triple covalent bond

1Thank You

ANSWER

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

Posted by Latchen Doma Sherpa 5 years ago

CBSE > Class 10 > Science

3 answers

Latchen Doma Sherpa 4 years, 11 months ago

What are the development in history?

0Thank You

Prateeek Chauhan 5 years ago

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

1Thank You

Sheetal Kumari 5 years ago

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

2Thank You

ANSWER

Kaisa make kare digestive system

Posted by Akash Singh 5 years ago

CBSE > Class 10 > Science

2 answers

Oye. Dipanshi 5 years ago

pencil se?

0Thank You

Ashish Kumar 5 years ago

Pencil , hath se aur kaise

0Thank You

ANSWER

Why electric current is called conventional current??

Posted by Abhilasha Akanksha 5 years ago

CBSE > Class 10 > Science

1 answers

Prateeek Chauhan 5 years 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.

0Thank You

ANSWER

Differences between series parallel connection

Posted by Gunnidhi Khaneja 5 years ago

CBSE > Class 10 > Science

2 answers

Divyansh Singh Rajawat 5 years 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

1Thank You

Abhilasha Akanksha 5 years 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.

3Thank You

ANSWER

Ionic bond and covalent bond?

Posted by Rajat Arora 5 years ago

CBSE > Class 10 > Science

2 answers

Divyansh Singh Rajawat 5 years 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

0Thank You

Laxmi Narayan 5 years 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.

2Thank You

ANSWER

When will cbse relased datesheet by subject wish

Posted by Arpit Bhardwaj 5 years ago

CBSE > Class 10 > Science

0 answers

ANSWER

Ph full form

Posted by Vinay Veer 5 years ago

CBSE > Class 10 > Science

5 answers

Latchen Doma Sherpa 5 years ago

Potential of hydrogen / power of hydrogen

0Thank You

Laxmi Narayan 5 years ago

Full form of PH is Power of Hydrogen

0Thank You

Mary Stuart 5 years ago

Potenz means power

0Thank You

Maheep Thugzz 5 years ago

Potenz height (Latin word of German )

0Thank You

Rajat Arora 5 years ago

Potenz de hydrogen

0Thank You

ANSWER

What is the full form of pH??

Posted by Bhavesh Singh Panwar 5 years ago

CBSE > Class 10 > Science

4 answers

Pawan Kumari 5 years ago

Power of hydrogen

1Thank You

Yashika B. 5 years ago

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

2Thank You

Laxmi Narayan 5 years ago

Full form of PH is Power of Hydrogen

2Thank You

Amit Kumar 5 years ago

2Thank You

ANSWER

Explain food web briefly

Posted by Hirendra Garg?? 5 years ago

CBSE > Class 10 > Science

3 answers

Divyansh Singh Rajawat 5 years 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

0Thank You

Rajat Arora 5 years ago

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

0Thank You

Aaryan Sompura 5 years ago

zask321

0Thank You

ANSWER

What is the definition of acid

Posted by Ankit Giri 5 years ago

CBSE > Class 10 > Science

3 answers

Jahanvi Yadav 5 years ago

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

1Thank You

Harsh Nayak 5 years ago

They release H+ ions in an aqueous solution

1Thank You

Mashhad Shabir 5 years ago

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

1Thank You

ANSWER

Example of photo decomposition reaction

Posted by Shaila Qureshi 5 years ago

CBSE > Class 10 > Science

2 answers

Ajay Tiwari 5 years ago

AgBr - AG + Br

0Thank You

Rajveer Mandal 5 years 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

2Thank You

ANSWER

What is a phiscal change

Posted by Pankaj Gola 5 years ago

CBSE > Class 10 > Science

1 answers

Mashhad Shabir 5 years ago

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

0Thank You

ANSWER

What is hybridisation

Posted by Dipesh Kumar 5 years ago

CBSE > Class 10 > Science

2 answers

シ︎?_?_?_?_? シ︎ 5 years ago

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

1Thank You

Vinay Gautam 5 years ago

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

1Thank You

ANSWER

Prism equation

Posted by Manveer Sran 5 years ago

CBSE > Class 10 > Science

1 answers

Mary Stuart 5 years ago

What u mean by this

0Thank You

ANSWER

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

Posted by Aman Kumar 5 years, 1 month ago

CBSE > Class 10 > Science

2 answers

Mary Stuart 5 years ago

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

0Thank You

シ︎?_?_?_?_? シ︎ 5 years ago

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

1Thank You

ANSWER

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

Posted by Aman Kumar 5 years, 1 month ago

CBSE > Class 10 > Science

2 answers

Kiran Kumari 5 years 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

0Thank You

Kanishka Varshney 5 years ago

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

0Thank You

ANSWER

How traits gets expressed?

Posted by Aman Kumar 4 years, 8 months ago

CBSE > Class 10 > Science

1 answers

Sia ? 4 years, 8 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.

0Thank You

ANSWER

State the mendel's law of inheritance

Posted by Aman Kumar 5 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Laxmi Narayan 5 years 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.

0Thank You

ANSWER

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

Posted by Aman Kumar 5 years, 1 month ago

CBSE > Class 10 > Science

2 answers

Himanshu Rajput 5 years ago

Right

0Thank You

Aditi Singh 5 years 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.

0Thank You

ANSWER

2021 revision notes for class 10th

Posted by Sangeeta Kumari 5 years, 1 month ago

CBSE > Class 10 > Science