Question

what are the 2 methods to test alkali​

Answer 1

Explanation:

1)When acidic solution is placed on litmus paper, the blue litmus will turn red while the red litmus will stay red. 2)Alkalis turn red litmus blue while the blue litmus stays blue.

Answer 2

Explanation:

https://goo.gl/search/what+is+global+warming+mention+its+causes

Causes of Global Warming - Climate - WWF-Australia Global warming is an aspect of climate change, referring to the long-term rise of the planet's temperatures. It is caused by increased concentrations of greenhouse gases in the atmosphere, mainly from human activities such as burning fossil fuels, and farming.