Everyday Science — All MCQs
2717 questions available
Q761.All of the following are electromagnetic radiations except____?
Correct Answer: B
Sound waves are mechanical waves requiring a medium, unlike electromagnetic radiations (light, radio, X-rays, etc.) which can travel through a vacuum.
Q762.All of the following foods contain carbohydrates except.
Correct Answer: B
Meat contains negligible carbohydrates compared to plant-based foods like grains, fruits, and vegetables.
Q763.All of the following foods lack vitamin C, except
Correct Answer: B
Milk contains relatively little vitamin C, unlike most fruits and vegetables which are richer sources.
Q764.All of the following organs in the human body are located both on the right and the left sides, except;____?
Correct Answer: C
The spleen is located only on the left side of the body, unlike paired organs such as kidneys or lungs found on both sides.
Q765.All of the following statements are incorrect except:
Correct Answer: A
In scientific work, both precision (consistency of results) and accuracy (closeness to true value) are important and should go hand in hand.
Q766.All of the following substances are crystalline except____?
Correct Answer: D
Plastic is typically amorphous (non-crystalline) in structure, unlike crystalline substances such as salt or sugar.
Q767.All of these are benefits of bacteria except ____?
Correct Answer: B
Bacteria provide benefits like decomposition, nitrogen fixation, and digestion aid, but they are not a significant source of oxygen production (that's mainly plants and algae).
Q768.Almost identical eclipses occur after 18 years and 11 days. This cycle is known as____?
Correct Answer: C
The Saros Cycle is the period of about 18 years and 11 days after which the Sun, Earth, and Moon return to approximately the same relative positions, producing nearly identical eclipses.
Q769.Alzheimer’s disease in human beings is characterized by the degeneration of ____
Correct Answer: B
Alzheimer's disease is characterized by progressive degeneration and death of nerve cells (neurons) in the brain.
Q770.Amino acids are a product of the digestion of: ____?
Correct Answer: C
Amino acids are produced when proteins are broken down (digested) in the body.
Q771.Amnesia is related to:____?
Correct Answer: D
Amnesia refers to a partial or total loss of memory.
Q772.Among the planets of the Solar system the position of the Earth from the Sun is:____?
Correct Answer: B
Earth is the third planet from the Sun in the Solar System.
Q773.An abnormally great desire for food, excessive eating is called?
Correct Answer: B
Bulimia nervosa is an eating disorder characterized by episodes of binge eating and an abnormally strong urge to eat.
Q774.An area of microbiology that is concerned with the occurence of disease in human population is?
Correct Answer: C
Epidemiology is the branch of medicine studying the occurrence, distribution, and control of disease in human populations.
Q775.An astronaut inside a spacecraft is in a state of weightlessness. This implies that?
Correct Answer: D
Weightlessness in a spacecraft occurs because both the astronaut and spacecraft are in continuous free-fall around Earth, not because gravity is absent.
Q776.An astronaut sees the colour of the sky as: ____?
Correct Answer: D
Astronauts in space see the sky as black because there's no atmosphere to scatter sunlight, unlike on Earth.
Q777.An atom is____?
Correct Answer: B
An atom is the smallest particle of an element that retains the chemical properties of that element and can take part in a chemical reaction.
Q778.An Average Hummingbird’s heart rate per minute is ____.
Correct Answer: D
A hummingbird's heart can beat more than 1,200 times per minute, among the fastest of any animal.
Q779.An edible underground stem is?
Correct Answer: A
Ginger is an edible underground stem (rhizome), not a root as commonly assumed.
Q780.An egg sinks in soft water but floats in a concentrated solution of salt because?
Correct Answer: C
An egg sinks in fresh water but floats in a concentrated salt solution because the salt solution's density exceeds that of the egg.