Question
When kept in air for some time, a layer of green colored
basic carbonate forms on the metal, that metal is ___________________ .Solution
Copper metal when exposed to air turns green in colour due to corrosion. When a copper vessel is exposed to air in the rainy season, the metal reacts with gases, moisture and atmospheric gases to form a mixture of copper carbonate and copper hydroxide. This gives a green colour to the surface of copper metal.
The Tropic of Cancer does not pass through which of these countries neighboring India?
China has the longest border with which of the following country?
Which is the largest uranium producing country in the world?
Which country recently banned gender transitions for minors in 2025?
Which Indian state is known as the 'Land of Five Rivers'?
Which of the following is the correct sequence of the mountain ranges of Himalayas when arranged from north to south?Â
Which of the following is/are the factors responsible for the formation of soil?Â
1. Topography
2. Parent Material
3. Human ...
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The standard meridian of India passes through which of the following states?
1. Jammu and Kashmir
2. Madhya Pradesh
3. Chhattisgarh...
With reference to the salient features of the different rock systems of India, consider the following pairs:
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