General Science Topics
Undergraduate level — General Science
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quiz Questions
Q61
In human biology, the deficiency of which hormone is the primary cause of Diabetes Insipidus?
Insulin
Antidiuretic Hormone
Glucagon
Thyroxine
Explanation
Diabetes Insipidus is caused by a deficiency of Antidiuretic Hormone (ADH), also known as vasopressin. This deficiency leads to the kidney's inability to conserve water, causing extreme thirst and heavy urination.
Q62
What is the primary technological objective of the 'Gaganyaan' project initialized by ISRO?
To establish a permanent space station over the equator
To demonstrate human spaceflight capability into Low Earth Orbit
To land an automated rover near the south pole of Mars
To deploy heavy cryogenic communication satellites over the Indian ocean
Explanation
The Gaganyaan project is India's first human spaceflight mission, designed to demonstrate indigenous capabilities to send a 3-member crew into a Low Earth Orbit (LEO) and safely return them.
Q63
Which of the following terms describes the unique ecological zone where two distinct biological communities meet and integrate?
Ecological Niche
Ecotone
Biomass Core
Ecosphere
Explanation
An ecotone is a transitional area of vegetation or ecosystem boundary between two different biomes, such as a mangrove forest between land and sea, showing high species diversity.
Q64
What type of wave is sound when it travels through a fluid medium like air or water?
Transverse Wave
Longitudinal Wave
Electromagnetic Wave
Non-mechanical Surface Wave
Explanation
Sound waves inside fluid mediums travel exclusively as longitudinal waves because fluids cannot support shear stresses to propagate transverse elastic displacements.
Q65
Which of the following non-metals is found in a liquid state at room temperature?
Chlorine
Bromine
Iodine
Sulphur
Explanation
Bromine is the only non-metallic chemical element that exists as a reddish-brown liquid at room temperature. Mercury is also a liquid at room temperature, but it is a metal.
Q66
Which of the following cranial nerves is responsible for transmitting visual information from the retina directly to the brain?
Olfactory Nerve
Optic Nerve
Auditory Nerve
Vagus Nerve
Explanation
The Optic Nerve (the second cranial nerve) is responsible for transmitting visual sensations from the retina's photoreceptors to the visual cortex of the brain.
Q67
An object is placed at the focus of a concave mirror. Where will its final image be formed?
At the Center of Curvature
At Infinity
Between Focus and Pole
Behind the Mirror
Explanation
When an object is placed at the principal focus of a concave mirror, the reflected rays become parallel to each other and meet at infinity, forming a highly magnified, real, and inverted image.
Q68
Which of the following processes is an example of an endothermic chemical reaction?
Respiration in living cells
Photosynthesis in plants
Combustion of Natural Gas
Decomposition of vegetable matter
Explanation
Photosynthesis is an endothermic reaction because green plants absorb solar energy from the sun to convert carbon dioxide and water into glucose and oxygen.
Q69
The universal donor blood group belongs to which classification due to the complete absence of surface antigens?
AB positive
O negative
O positive
AB negative
Explanation
Blood group O-negative (O-) contains neither A nor B antigens, nor the Rh factor on the surface of its red blood cells, meaning it can be safely transfused to individuals of any blood type without triggering an immune reaction.
Q70
Which state of matter exhibits properties of a highly ionized gas with a net neutral charge, commonly observed inside fluorescent lamps?
Liquid Crystal State
Bose-Einstein Condensate
Plasma
Supercritical Fluid
Explanation
Plasma consists of a collection of super-energetic and super-excited particles in the form of highly ionized gas, which responds strongly to electromagnetic fields and glows inside neon signs and fluorescent lights.