Different metals react differently with water . It depends on the reactivity of the metal .Some metals react with water at ordinary temperature, some reacts only with hot water, while some metals react with the steam.In each case their occur formation of metal oxide and release of hydrogen gas.
Most metals react with water to produce a metal hydroxide or metal oxide and hydrogen gas. If reaction takes place at ordinary temperature, metal hydroxide is formed and if reaction takes place at a higher temperature, metal oxide is formed.
Or
Metals Like Potassium, Sodium and Calcium : These metals decompose water at ordinary temperature as they are highly reactive.
The reaction of sodium and potassium with water is so violent and exothermic that the hydrogen gas produced catches fire immediately.
The metal which reacts with water only when it is red hot and steam passed over it is : | |||
Right Option : A | |||
View Explanation |
Which one of the following metals does not react with cold as well as hot water ? | |||
Right Option : D | |||
View Explanation |
Which of the following metals can react chemically even with cold water ? | |||
Right Option : D | |||
View Explanation |
A marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
Being a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
My experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
Abhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
About Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
It has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
My experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
Abhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
My experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
It was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.