Add some water in the test tube in which gas is collected. Now, cover the test tube. Shake it well. Test the solution with blue litmus and red litmus. Blue litmus turns red. Thus, the nature of gas is acidic. https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-4/
Add some water in the test tube in which gas is collected. Now, cover the test tube. Shake it well. Test the solution with blue litmus and red litmus. Blue litmus turns red. Thus, the nature of gas is acidic.
No, we cannot store lemon pickle in aluminium utensils, as metals react with acids to liberate hydrogen gas. The pickle (which is acidic in nature) can be spoiled. https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-4/
No, we cannot store lemon pickle in aluminium utensils, as metals react with acids to liberate hydrogen gas. The pickle (which is acidic in nature) can be spoiled.
Sodium and potassium are highly reactive metals. They can catch fire even when they come in contact with air. So, they have to be kept in kerosene. https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-4/
Sodium and potassium are highly reactive metals. They can catch fire even when they come in contact with air. So, they have to be kept in kerosene.
The reactivity of zinc is higher than copper. Only a metal of higher reactivity can displace a metal of lower reactivity from its salt solution. So, copper cannot displace zinc from zinc sulphate solution. https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-4/
The reactivity of zinc is higher than copper. Only a metal of higher reactivity can displace a metal of lower reactivity from its salt solution. So, copper cannot displace zinc from zinc sulphate solution.
How will she find the nature of the gas?
Add some water in the test tube in which gas is collected. Now, cover the test tube. Shake it well. Test the solution with blue litmus and red litmus. Blue litmus turns red. Thus, the nature of gas is acidic. https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-4/
Add some water in the test tube in which gas is collected. Now, cover the test tube. Shake it well. Test the solution with blue litmus and red litmus. Blue litmus turns red. Thus, the nature of gas is acidic.
https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-4/
See lessDilute sulphuric acid is poured on a copper plate?
Copper does not react with dilute sulphuric acid. https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-4/
Copper does not react with dilute sulphuric acid.
https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-4/
See lessCan you store lemon pickle in an aluminium utensil? Explain.
No, we cannot store lemon pickle in aluminium utensils, as metals react with acids to liberate hydrogen gas. The pickle (which is acidic in nature) can be spoiled. https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-4/
No, we cannot store lemon pickle in aluminium utensils, as metals react with acids to liberate hydrogen gas. The pickle (which is acidic in nature) can be spoiled.
https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-4/
See lessSodium and potassium are stored in kerosene.
Sodium and potassium are highly reactive metals. They can catch fire even when they come in contact with air. So, they have to be kept in kerosene. https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-4/
Sodium and potassium are highly reactive metals. They can catch fire even when they come in contact with air. So, they have to be kept in kerosene.
https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-4/
See lessCopper cannot displace zinc from its salt solution.
The reactivity of zinc is higher than copper. Only a metal of higher reactivity can displace a metal of lower reactivity from its salt solution. So, copper cannot displace zinc from zinc sulphate solution. https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-4/
The reactivity of zinc is higher than copper. Only a metal of higher reactivity can displace a metal of lower reactivity from its salt solution. So, copper cannot displace zinc from zinc sulphate solution.
https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-4/
See less