Daily NEET MCQ- March 23, 2022 - NEET MCQ

Taxonomy is the classification of life forms into different taxa. Biology is the study of life. Systematics is the study of relationships among different organisms. Ornithology is the study of birds.

Unlike asexual reproduction, sexual reproduction involves two parent species. Sexual reproduction takes place only when both the parent organisms belong to the same species.

Panthera refers to the genus to which lion, tiger and leopard belong to. Canidae refers to the family to which wolves, dog, jackals and foxes etc. belong to. Felidae is the family to which lion, tiger, leopard and cats etc. belong to. Mammalia is a class of animals which includes all the milk-feeding animals like dogs, cats, humans, bats etc.

The body moves in the state of motion. Hence it has a velocity and so kinetic energy. Kinetic energy = (1/2)mv².

The motion of a car on straight road is happening along a straight line. Hence the motion can be called rectilinear as rectilinear motion happens along a straight line. Rest all are non rectilinear motions.

The hands of a clock move in a circular manner. Hence, the motion exhibited is circular motion. Moreover, it happens periodically, so it is also periodic motion. But its is not rectilinear motion.

The suitable conditions of cathode ray discharge tube are low pressure and high pressures. Pressure can be adjusted by evacuated tubes. High voltage is applied across electrodes and current starts flowing through the tube.

Ethanal can be prepared by oxidation of ethene, in the presence of an ionic catalyst in an aqueous medium. This is a greener method and gives 90% of yield.

Tetrachloroethene was used as a solvent for dry cleaning purposes. It is a suspected carcinogen and groundwater contaminant. It is replaced by greener solvent like supercritical CO₂.

Synthetic methods should avoid using or generating substances toxic to humans and/or the environment. Hence less hazardous chemical synthesis is an important principle.