डायरी लिखने के क्या फायदे हैं ?​

Answer:

ZnO+C----Zn+CO. 2.CuO+H2-----Cu+H2O

oxidation

An oxidation-reduction (redox) reaction is a type of chemical reaction that involves a transfer of electrons between two species. In redox reaction the oxidation number of a molecule, atom, or ion changes by gaining or losing an electron.

In the reaction : CuO+H

2

⟶Cu+H

2

O

n the reaction H

2

is oxidized since it has lost electrons and Cu is reduced since it has gained electrons.

Answer:

17

Step-by-step explanation:

I think your question has mistake. look at my answer.

Answer:

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Explanation:

Once there was a hunter. He lived in a village. He had a dog.

It was very faithful. One day, the hunter went to the city with his wife. He left his son at hire. A wolf came there. It entered the house and attacked the baby. The dog fought with the wolf and killed it.

In the evening, the hunter and his wife returned from the city. The dog was waiting outside for its master. When it saw its master, he licked its feet. The hunter saw the stains of blood on the dog’s mouth.

He thought that the dog had killed his son. He became very angry. He took his gun and killed the dog. When he found his son safe inside the house and the wolf lying dead near him, he wept bitterly.

Topic- Honest dog .

Explanation:

There is a man named Piyush . He lived with a dog as guard keeper . The dog's name was Bruce. Bruce was his friend also . Piyush loved Bruce a lot. But one day he got shifted to a new place. In this new house on the second day a robbery takes place because there are two entrances in this new house. As a result, he bought a new dog and named him George . He was taking so much care of George and started ignoring Bruce. On one day some thief's came in Piyush's house, George was sleeping that time. But Bruce go and started barking at the theifs. But theifs had a gun and they shotted Bruce . Piyush listen the sound of fire but the theifs had already gone. Piyush see his injured dog and feel very sad . He tried very hard to save his friend but can't . And realised his mistake and started treating George nicely like a family member.

Step-by-step explanation:

Let us consider 5 be a rational number, then

5=p/q, where ‘p’ and ‘q’ are integers, q=0 and p, q have no common factors (except 1).

So,

5=p2/q2

p2=5q2 …. (1)

As we know, ‘5’ divides 5q2, so ‘5’ divides p2 as well. Hence, ‘5’ is prime.

So 5 divides p

Now, let p=5k, where ‘k’ is an integer

Square on both sides, we get

p2=25k2

5q2=25k2 [Since, p2=5q2, from equation (1)]

q2=5k2

As we know, ‘5’ divides 5k2, so ‘5’ divides q2 as well. But ‘5’ is prime.

So 5 divides q

Thus, p and q have a common factor of 5. This statement contradicts that ‘p’ and ‘q’ has no common factors (except 1).

We can say that 5 is not a rational number.

Hope it helps

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