Explanation

Sodium Bicarbonate is the monosodium salt of carbonic acid with alkalinizing and electrolyte replacement properties

Explanation

The study of coins is called numismatics.

The term "numismatics" was first coined in the late 19th century,

Explanation

• Structure of DNA was discovered by James Watson and Francis Crick in 1953.
• They discovered the double-helix structure of DNA using X-ray crystallography data.
• Their discovery revealed the double-helix structure of DNA, where two complementary strands are twisted together with sugar and phosphate molecules, and the nitrogenous bases (adenine, thymine, cytosine, and guanine) pair in a specific manner.

Explanation

A man should take (3.7 liters) a day, this includes fluids from water, beverages like teas and juice, and from food.

Explanation

B vitamins are a group of water-soluble vitamins.

Explanation

The most effective way to address local environmental problems is a multi-pronged approach that includes:

• Reducing consumption
• Promoting reuse
• Recycling
• Supporting sustainable practices.

This involves individual actions, community initiatives, and advocating for policy changes to protect the environment. 

Explanation

As children grow older, they show increasing evidence of meta memory which is the knowledge about their memory and how it works.

Explanation

The first open-heart surgery in India was performed on February 16, 1961

By Dr. K.N. Dastur at BYL Nair Hospital in Mumbai.

He used a heart-lung machine developed with the help of engineers at the National Steel Company.

The surgery was performed on a 19-year-old girl named Hemlata 

Explanation

In the membranous skeleton, the perineurium sheath surrounds the central nervous system. 

The perineurium is a protective layer of connective tissue that encases nerve fibers.

It providing support and shielding them from external damage.

Explanation

Gigantic clouds of dust and gas in space are called nebulae

Primarily hydrogen and helium, plus dust (silicates, carbon, ice). 

Occupying the space between stars and acting as a nursery for new stars