India's best zinc and lead reserves are available in –
Correct Answer:
(C) Rampur Agacha of Bhilwara District
Rajasthan is the leading zinc and lead producing state of India. According to 2018-19 (P) data, Rajasthan has a near monopoly in zinc and lead production. Asia's best zinc and lead reserves are located in Rampur Agacha region of Bhilwara district. Hindustan Zinc Limited has established a super smelter machine with the help of Britain which is used to melt zinc and lead. Other reserves of zinc and lead in Rajasthan are- Zawar region (Udaipur), Rajpur Debari region (Udaipur), Dungarpur, Alwar, Banswara and Sirohi.
Ques: 2
Consider the following statements:
Zinc is a silvery blue-grey metal.
Zinc has a relatively low melting and boiling point.
Which of the statements given above is/are correct?
Correct Answer:
(C) Both 1 and 2
Zinc is a silvery blue-grey metal that has relatively low melting and boiling points compared to other metals. Its melting point is 419.5 °C and its boiling point is 907 °C. While it's more brittle than tin or lead, it's still considered a strong and important metal. Zinc is the fourth most widely used metal globally.
Ques: 3
Consider the following statements:
Australia accounts for 27% of world's zinc reserves.
Rajasthan is endowed with the largest reserves of lead – zinc ore.
Which of the statements given above is/are correct?
Correct Answer:
(C) Both 1 and 2
In India, Rajasthan is endowed with the largest reserves/resources of lead – zinc ore, followed by Andhra Pradesh (3.03%), Madhya Pradesh (1.98%), Bihar etc.
Global reservoirs of Zinc: Australia accounts for 27% of world's zinc reserves, followed by China (18%), Russia & Mexico (9% each), Peru(8%), Kazakhstan(5%), USA(4%), etc.
Ques: 4
Consider the following statements regarding Zinc’s biological role;
It is a trace mineral, yet it is necessary for almost 100 enzymes to carry out vital chemical reactions.
It is a major player in the creation of DNA, growth of cells and supporting a healthy immune system.
Which of the statements given above is/are correct?
Correct Answer:
(D) Neither 1 Nor 2
Ques: 5
Galvanisation is a method of protecting iron from rusting by coating it with a thin layer of
Correct Answer:
(C) Zinc
When exposed to air and moisture, iron rusts quickly, and rusting can be prevented by applying a thin layer of zinc to the surface. Galvanisation is the process of applying a zinc coating to iron and steel.