Question

The World’s longest masonry dam is ____________.
a. Hirakud
b. Bhakra Nangal
c. Nagarjuna Sagar
d. Aswan

Answer 1

Hint: A dam is often used as a reservoir used to produce electricity or as a water source. A dam is a barrier designed to contain water and increase its level. The masonry dam is one type of dams, the concrete structures of this masonry dam are made up of masonry materials without binders.

Complete step by step answer:
Masonry dam is constructed mainly of stones and bricks, which contributes to the strength of the dam also sometimes joined with mortar. The raw materials are pebbles, rocky soil, rocks (from quarries), and gravel for the body of a masonry dam. The stone should have ample strength and resistance to weathering, the impact of frost, and filtration damage for the fill and the dry masonry. Igneous rock (granite, syenite, diorite, and basalt) and sedimentary rock (solid limestone and dolomite, as well as quartzite) are the best materials for filling. These are typically designed as a fixed dam, with a water passage to flow through spillways on the banks or less often in the dam's body. Nagarjuna Sagar, which is situated across the Krishna River on the border between Guntur district, Andra Pradesh, and Nalgonda district, Telangana, is the world's largest masonry dam. This dam, with a gross storage capacity of 11.472 billion cubic meters, was built between 1955 and 1967. From its lowest base, it is also 590 feet (180 m ) tall and 0.99 miles long with 26 flood gates that are 42 feet (13 m) wide and 45 feet (14 m ) tall.

So, the correct answer is Option C.

Note: Nagarjuna Sagar Dam was the earliest in a series of major infrastructure projects launched to achieve the Green Revolution in India called "new temples." It is also one of the earliest projects in India for multipurpose irrigation and hydroelectricity.