Question : Which among the following is a copper mineral?
Option 1: Azurite
Option 2: Bauxite
Option 3: Halite
Option 4: Hematite
Correct Answer: Azurite
Solution : The correct answer is azurite.
Azurite is a copper mineral. The chemical composition of azurite, a copper carbonate hydroxide mineral, is Cu3(CO3)2(OH)2. It is most recognised for its distinctive deep blue to violet-blue hue that it has. Though it is often less common, azurite can be found in the same geologic settings as its sister mineral, malachite.
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Question : Which among the following industries was not in Schedule A of Industrial Policy 1956?
Option 1: Air transport
Option 2: Mining of salt
Option 3: Mineral oils
Option 4: Iron and steel
Question : Which of the following is the major copper-producing country?
Option 1: Sri Lanka
Option 2: Indonesia
Option 3: Chile
Option 4: Russia
Question : The greatest among the following numbers $(3)^{\frac{1}{3}}, (2)^{\frac{1}{2}}, 1, (6)^{\frac{1}{6}}$ is:
Option 1: $(2)^{\frac{1}{2}}$
Option 2: 1
Option 3: $(6)^{\frac{1}{6}}$
Option 4: $(3)^{\frac{1}{3}}$
Question : Which among the following is a male part of a flower?
Option 1: Stigma
Option 2: Stamen
Option 3: Pistil
Option 4: Style
Question : Which among the following is a seaport of Bangladesh?
Option 1: Faridpur
Option 2: Rajshahi
Option 3: Chittagong
Option 4: Dhaka
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