Daily NEET MCQ- July 7, 2022 - NEET MCQ

The formation of deuterosulphuric acid occurs when 1 mole of heavy water (D₂O) reacts with one mole of sulfur trioxide (SO₃). The chemical formula of deuterosulphuric acid is given by D₂SO₄.

When one mole of heavy water reacts with one mole of sodium, it results in the formation of 1 mole of sodium deuteroxide and half a mole of deuterium it is represented chemically as 1D₂O + 1Na → 1NaOD + 1/2D₂.

The chemical formula of heavy water is D₂O, where D represents deuterium and O represents oxygen. Two atoms of deuterium and one atom of Oxygen combine to form heavy water (D₂O).

The parabolic trajectory of the free fall of the international space station is at such high velocity that it essentially orbits the planet. The weightlessness experienced by the astronauts in the ISS is the consequence of this freefall.

Since the person sitting in the chair in the satellite is essentially in freefall along with the satellite, he does not experience any reaction force. The lack of reaction force (or) normal force makes a person feel weightless.

There is no “up” or “down” in space due to the lack of normal reaction forces for their weights. Gravity defines the vertical direction. Thus for the astronauts, all directions are the same.

Flowers are the reproductive units of angiosperms. Angiosperms are flowering plants. Its inside the flowers that the male and female reproductive structures exist. Stamens in case of males and pistil in case of females.

The four whorls of the flower are arranged successively on a swollen end of a stalk or pedicel known as the thalamus or the receptacle. The receptacle gives rise to edible parts of the fruit.

Flowers are unique in color, shape, odor, etc. for pollination. It is necessary to attract insects and animals for cross pollination and having sweet odor and attractive shapes and colors helps in attracting them. Pollination is a pre-requisite for fertilization.

Collection of sepals is known as calyx. Floral parts like calyx and various other parts help in the dispersal of fruits and seeds. Corolla is also known as petals. Style is a part of the gynoecium that helps in pollination.