MCQs

Explanation
Vitamin D deficiency can cause Rickets , a disease characterized by: Soft and weak bones Skeletal deformities Stunted growth Increased risk of fractures

Explanation
The modern periodic table is arranged by increasing atomic number (number of protons). This arrangement resolves inconsistencies in earlier tables and groups elements with similar properties together.

Explanation
The hertz is the unit of frequency  of one cycle per second.   symbol: hertz (Hz) Hertz in honor of the German physicist Heinrich Hertz hertz in the International System of Units (SI) frequency i s defined as one cycle per second ***

Explanation
The Mole (mol) is the SI unit of amount of substance, representing 6.022 x 10^23 particles. It is used to measure the amount of a substance in a sample.

Explanation
The mass of Earth is approximately 6.0 x 10^24 kilograms ( 5.98 x 10^24 kg ). This is a widely accepted scientific value , based on various measurements and calculations, including: Gravity measurements Satellite orbits Seismological data Planetary formation models

Explanation
The s tratospheric ozone layer  is Earth's “ sunscreen ”  protecting living things from too much  ultraviolet  radiation from the sun. Oxygen layer in the  atmosphere Ozone   protects  us from the harmful ultraviolet radiation of the sun. Ozone  formula : O3 The ozone layer lies approximately  15-40 kilometers  (10-25 miles) above the Earth's surface, in the stratosphere. The ozone layer is  depleting : Air pollution

Explanation
Vitamin D deficiency can cause Rickets , a disease characterized by: Soft and weak bones Skeletal deformities Stunted growth Increased risk of fractures

Explanation
Omnivores are animals that eat both plants and animals . They have adaptations that allow them to digest and extract nutrients from a wide variety of food sources, including fruits, leaves, insects, small animals, and even carrion. Examples of omnivores include humans, bears, pigs, chimpanzees, and raccoons . Only plants : Herbivores (e.g., cows). Only animals : Carnivores (e.g., lions).

Explanation
Ecology is the study of interrelationships between organisms and with their environment. It is also known as environmental science. It's a branch of biology that examines how living things interact with their physical surroundings.

Explanation
In the modern periodic table, there are 7 periods (horizontal rows) and 18 groups (vertical columns).

Explanation
A reaction in which heat is absorbed is called an endothermic reaction. These reactions lower the temperature of their surrounding area, thereby creating a cooling effect.

Explanation
Cross eyes, or strabismus, occur due to an imbalance in ocular muscles, causing the eyes to turn inward or outward. This condition affects vision alignment and depth perception.

Explanation
A Light Emitting Diode (LED) A light-emitting diode is a semiconductor device that emits light when current flows through it LED lighting products produce light up to 90 %  *** Invented : H. J. Round (1907); Oleg Losev (1927); James R. Biard (1961); Nick Holonyak (1962) *** First production : October 1962 **************** VU FIA CBT  14-12-2021 ND5-5-2023

Explanation
The de-oxygenated blood from the heart comes to the lungs through  the Pulmonary artery *** The deoxygenated blood returns from  the body to the right atrium and from there enter the right ventricle that pumps it to the lungs through the main pulmonary artery (pulmonary trunk). **** The  pulmonary veins  transport  oxygenated blood back to the heart from the lungs

Explanation
Number of moons in the planets Saturn: 83 Jupiter: 92 Uranus: 27 Neptune: 14 Mars: 2 Earth: 1 Venus: 0 Mercury: 0

Explanation
Light travels at about 300,000 kilometers per second i n a vacuum with a refractive index of 1.0, but slows down to 225,000 kilometers per second in water and 200,000 kilometers per second in the glass. ND16-3-2023

Explanation
Mercury revolves around the Sun every 88 days, but its rotation takes nearly 59 days. 

Explanation
Sputnik 1 was the first artificial Earth satellite. It was launched into an elliptical low Earth orbit by the Soviet Union on 4 October 1957 as part of the Soviet space program. ND2-03-2023

Explanation
In a parallel circuit, if one bulb blows , the other bulb will remain the same. This is because each bulb in a parallel circuit has its own independent path to the power source. The failure of one bulb does not affect the current flowing through the other bulb's path.

Explanation
In liquids, particles are quite clos e together and move with random motion throughout the container . Particles move rapidly in all directions but collide with each other more frequently than gases due to shorter distances between particles. With an increase in temperature , the particles move faster as they gain kinetic energy , resulting in increased collision rates and an increased rate of diffusion. ND2-03-2023

Explanation
In space exploration , a spectroscope is typically used to analyze the light coming from stars, planets, and other celestial objects to determine their chemical composition. This helps scientists understand the formation and evolution of stars, planets, and galaxies.

Explanation
Cross eyes, or strabismus, occur due to an imbalance in ocular muscles, causing the eyes to turn inward or outward. This condition affects vision alignment and depth perception.

Explanation
A Light Emitting Diode (LED) A light-emitting diode is a semiconductor device that emits light when current flows through it LED lighting products produce light up to 90 %  *** Invented : H. J. Round (1907); Oleg Losev (1927); James R. Biard (1961); Nick Holonyak (1962) *** First production : October 1962 **************** VU FIA CBT  14-12-2021 ND5-5-2023

Explanation
The de-oxygenated blood from the heart comes to the lungs through  the Pulmonary artery *** The deoxygenated blood returns from  the body to the right atrium and from there enter the right ventricle that pumps it to the lungs through the main pulmonary artery (pulmonary trunk). **** The  pulmonary veins  transport  oxygenated blood back to the heart from the lungs

Explanation
Number of moons in the planets Saturn: 83 Jupiter: 92 Uranus: 27 Neptune: 14 Mars: 2 Earth: 1 Venus: 0 Mercury: 0

Explanation
Light travels at about 300,000 kilometers per second i n a vacuum with a refractive index of 1.0, but slows down to 225,000 kilometers per second in water and 200,000 kilometers per second in the glass. ND16-3-2023

Explanation
Mercury revolves around the Sun every 88 days, but its rotation takes nearly 59 days. 

Explanation
Sputnik 1 was the first artificial Earth satellite. It was launched into an elliptical low Earth orbit by the Soviet Union on 4 October 1957 as part of the Soviet space program. ND2-03-2023

Explanation
In a parallel circuit, if one bulb blows , the other bulb will remain the same. This is because each bulb in a parallel circuit has its own independent path to the power source. The failure of one bulb does not affect the current flowing through the other bulb's path.

Explanation
In liquids, particles are quite clos e together and move with random motion throughout the container . Particles move rapidly in all directions but collide with each other more frequently than gases due to shorter distances between particles. With an increase in temperature , the particles move faster as they gain kinetic energy , resulting in increased collision rates and an increased rate of diffusion. ND2-03-2023

Explanation
In space exploration , a spectroscope is typically used to analyze the light coming from stars, planets, and other celestial objects to determine their chemical composition. This helps scientists understand the formation and evolution of stars, planets, and galaxies.

Explanation
Cross eyes, or strabismus, occur due to an imbalance in ocular muscles, causing the eyes to turn inward or outward. This condition affects vision alignment and depth perception.

Explanation
A Light Emitting Diode (LED) A light-emitting diode is a semiconductor device that emits light when current flows through it LED lighting products produce light up to 90 %  *** Invented : H. J. Round (1907); Oleg Losev (1927); James R. Biard (1961); Nick Holonyak (1962) *** First production : October 1962 **************** VU FIA CBT  14-12-2021 ND5-5-2023

Explanation
The de-oxygenated blood from the heart comes to the lungs through  the Pulmonary artery *** The deoxygenated blood returns from  the body to the right atrium and from there enter the right ventricle that pumps it to the lungs through the main pulmonary artery (pulmonary trunk). **** The  pulmonary veins  transport  oxygenated blood back to the heart from the lungs

Explanation
Number of moons in the planets Saturn: 83 Jupiter: 92 Uranus: 27 Neptune: 14 Mars: 2 Earth: 1 Venus: 0 Mercury: 0

Explanation
Light travels at about 300,000 kilometers per second i n a vacuum with a refractive index of 1.0, but slows down to 225,000 kilometers per second in water and 200,000 kilometers per second in the glass. ND16-3-2023

Explanation
Mercury revolves around the Sun every 88 days, but its rotation takes nearly 59 days. 

Explanation
Sputnik 1 was the first artificial Earth satellite. It was launched into an elliptical low Earth orbit by the Soviet Union on 4 October 1957 as part of the Soviet space program. ND2-03-2023

Explanation
In a parallel circuit, if one bulb blows , the other bulb will remain the same. This is because each bulb in a parallel circuit has its own independent path to the power source. The failure of one bulb does not affect the current flowing through the other bulb's path.

Explanation
In liquids, particles are quite clos e together and move with random motion throughout the container . Particles move rapidly in all directions but collide with each other more frequently than gases due to shorter distances between particles. With an increase in temperature , the particles move faster as they gain kinetic energy , resulting in increased collision rates and an increased rate of diffusion. ND2-03-2023

Explanation
In space exploration , a spectroscope is typically used to analyze the light coming from stars, planets, and other celestial objects to determine their chemical composition. This helps scientists understand the formation and evolution of stars, planets, and galaxies.

Explanation
Cross eyes, or strabismus, occur due to an imbalance in ocular muscles, causing the eyes to turn inward or outward. This condition affects vision alignment and depth perception.

Explanation
A Light Emitting Diode (LED) A light-emitting diode is a semiconductor device that emits light when current flows through it LED lighting products produce light up to 90 %  *** Invented : H. J. Round (1907); Oleg Losev (1927); James R. Biard (1961); Nick Holonyak (1962) *** First production : October 1962 **************** VU FIA CBT  14-12-2021 ND5-5-2023

Explanation
The de-oxygenated blood from the heart comes to the lungs through  the Pulmonary artery *** The deoxygenated blood returns from  the body to the right atrium and from there enter the right ventricle that pumps it to the lungs through the main pulmonary artery (pulmonary trunk). **** The  pulmonary veins  transport  oxygenated blood back to the heart from the lungs

Explanation
Number of moons in the planets Saturn: 83 Jupiter: 92 Uranus: 27 Neptune: 14 Mars: 2 Earth: 1 Venus: 0 Mercury: 0

Explanation
Light travels at about 300,000 kilometers per second i n a vacuum with a refractive index of 1.0, but slows down to 225,000 kilometers per second in water and 200,000 kilometers per second in the glass. ND16-3-2023

Explanation
Mercury revolves around the Sun every 88 days, but its rotation takes nearly 59 days. 

Explanation
Sputnik 1 was the first artificial Earth satellite. It was launched into an elliptical low Earth orbit by the Soviet Union on 4 October 1957 as part of the Soviet space program. ND2-03-2023

Explanation
In a parallel circuit, if one bulb blows , the other bulb will remain the same. This is because each bulb in a parallel circuit has its own independent path to the power source. The failure of one bulb does not affect the current flowing through the other bulb's path.

Explanation
In liquids, particles are quite clos e together and move with random motion throughout the container . Particles move rapidly in all directions but collide with each other more frequently than gases due to shorter distances between particles. With an increase in temperature , the particles move faster as they gain kinetic energy , resulting in increased collision rates and an increased rate of diffusion. ND2-03-2023

Explanation
In space exploration , a spectroscope is typically used to analyze the light coming from stars, planets, and other celestial objects to determine their chemical composition. This helps scientists understand the formation and evolution of stars, planets, and galaxies.

Explanation
Cross eyes, or strabismus, occur due to an imbalance in ocular muscles, causing the eyes to turn inward or outward. This condition affects vision alignment and depth perception.

Explanation
A Light Emitting Diode (LED) A light-emitting diode is a semiconductor device that emits light when current flows through it LED lighting products produce light up to 90 %  *** Invented : H. J. Round (1907); Oleg Losev (1927); James R. Biard (1961); Nick Holonyak (1962) *** First production : October 1962 **************** VU FIA CBT  14-12-2021 ND5-5-2023

Explanation
The de-oxygenated blood from the heart comes to the lungs through  the Pulmonary artery *** The deoxygenated blood returns from  the body to the right atrium and from there enter the right ventricle that pumps it to the lungs through the main pulmonary artery (pulmonary trunk). **** The  pulmonary veins  transport  oxygenated blood back to the heart from the lungs

Explanation
Number of moons in the planets Saturn: 83 Jupiter: 92 Uranus: 27 Neptune: 14 Mars: 2 Earth: 1 Venus: 0 Mercury: 0