Questions

As it is said that density of gold is greater than that of density of silver, so silver occupies a greater volume than gold. So it has more upthrust from the water, although they both show the same weight under water, there is more silver present. Hence silver piece will weigh more.

The given math puzzle follows a logic that,

1 + 4 = 5 => 1 x 4 + 1 = 5

2 + 5 = 12 => 2 x 5 + 2 = 12

3 + 6 = 21 => 3 x 6 + 3 = 21

Similarly,

8 + 11 = > 8 x 11 + 8 = 96.

The oldest generally accepted fossils of large animals range in age from 565 to 550 million years old.

rift valley

In the brain cerebellum, the arbor vitae refers to the cerebellar white matter which resembles the structure of arborvitae plant leaves and branches structure.

Fertile alluvial soil sufficient water supply  and optimum temperatures are the reasons behind the high output of paddy here. Also known as the 'Granary of the South', it is located in Tamil Nadu.

8085 is a one address microprocessor. In 8085 interrupts  are classified by software and hardware interrupts.

Answers B and C belong to quality management, and answer D was formulated by Elizabeth Duffy and suggested that we all try to adjust our lives so that we have a dynamic balance (homeostasis) between challenge and relaxation. Kerstner, Chapter 18