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.
Match Column I and Column II and choose the correct match from the given choice
Match Column I and Column II and choose the correct match from the given choices
In the following questions two columns are given. In column-I three sentences are given, each of them consisting of a blank which may or may not be fil...
In the following question, a sentence is divided in to three parts, given in column 1, 2 and 3. Match the statements from column 1 with those in column...
In the following questions two columns are given. In column-I three sentences are given, each of them consisting of a blank which may or may not be fil...
Directions: Match the words in Column A with their meanings in Column B, and choose the correct combination from the options given below:
...
BUT
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In the following question, two columns are given, containing three phrases each. A phrase from the first column may or may not connect with a phrase fr...
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