Everyday Science — All MCQs
2717 questions available
Q2101.What is the molecular formula for Nitric acid ____ ?
Correct Answer: B
What is the molecular formula for Nitric acid HNO3. The formula identifies the elements present and the number of atoms of each element in one molecule or formula unit.
Q2102.What is the molecular weight of Ammonia (NH3) ____ ?
Correct Answer: A
What is the molecular weight of Ammonia (NH3) 17.031 g/mol. This description follows from the defining characteristics and established facts associated with the subject.
Q2103.What is the most abundant form of matter in the universe?
Correct Answer: A
The most abundant form of matter in the universe is Plasma. Astronomical observations and measurements establish this relationship among the relevant celestial bodies.
Q2104.What is the name of newsly discovered galaxy which may be the earliest and most distant galaxy ever discovered in April 2022?
Correct Answer: A
The name of newsly discovered galaxy which may be the earliest and most distant galaxy ever discovered in April 2022 is HD1. Astronomical observations and measurements establish this relationship among the relevant celestial bodies.
Q2105.What is the name of that system, which uses radioactivity to decide the period of materials of-pre-historic period ?
Correct Answer: C
The name of that system, which uses radioactivity to decide the period of materials of-pre-historic period is Carbon dating. This description follows from the defining characteristics and established facts associated with the subject.
Q2106.What is the name of the Active asteroid discovered near Jupiter?
Correct Answer: C
The name of the Active asteroid discovered near Jupiter is 2019 LD2. Historical scientific accounts credit this person, place, or event with the development described.
Q2107.What is the name of the biggest part of human brain?
Correct Answer: B
The name of the biggest part of human brain is Cerebrum. This follows from the structure and normal physiological function of the relevant organ, tissue, or body system.
Q2108.What is the name of the branch of the science that studies the ocean?
Correct Answer: A
The name of the branch of the science that studies the ocean is Oceanography. Its geographic position or physical characteristics account for the description given.
Q2109.What is the name of the central part of the earth?
Correct Answer: B
The name of the central part of the earth is Core. Astronomical observations and measurements establish this relationship among the relevant celestial bodies.
Q2110.What is the name of the chart with letters in multiple rows, used for an eye test ?
Correct Answer: A
The name of the chart with letters in multiple rows, used for an eye test is Snellen Chart. Its design and operating principle allow it to perform the stated function.
Q2111.What is the name of the gas used in an air conditioner?
Correct Answer: C
The name of the gas used in an air conditioner is Freon. Its composition and chemical or physical behavior give it the stated classification or property.
Q2112.What is the nature of pH of Milk?
Correct Answer: A
The nature of pH of Milk is Slightly Acidic. This description follows from the defining characteristics and established facts associated with the subject.
Q2113.What is the number of known crystalline phases of water ____?
Correct Answer: D
What is the number of known crystalline phases of water 18. This value follows from the standard definition or accepted conversion used for the quantity.
Q2114.What is the one of the other name of Vitamin A”?
Correct Answer: C
The one of the other name of Vitamin A” is Retinol. Vitamins support specific metabolic and physiological functions, and their properties determine their sources, solubility, and deficiency effects.
Q2115.What is the percentage of salt water on earth surface?
Correct Answer: C
The percentage of salt water on earth surface is 97%. Astronomical observations and measurements establish this relationship among the relevant celestial bodies.
Q2116.What is the percentage of water present in our brain?
Correct Answer: D
The percentage of water present in our brain is 73%. This follows from the structure and normal physiological function of the relevant organ, tissue, or body system.
Q2117.What is the range, in hertz, of the normal human hearing?
Correct Answer: B
The range, in hertz, of the normal human hearing is 20 Hz to 20 kHz. This description follows from the defining characteristics and established facts associated with the subject.
Q2118.What is the rank of the earth in the solar system in terms of size?
Correct Answer: B
The rank of the earth in the solar system in terms of size is 4th. Astronomical observations and measurements establish this relationship among the relevant celestial bodies.
Q2119.What is the rarest blood type in humans?
Correct Answer: D
The rarest blood type in humans is AB-. This follows from the structure and normal physiological function of the relevant organ, tissue, or body system.
Q2120.What is the scientific name of flying fish ?
Correct Answer: A
The scientific name of flying fish is Exocoetidae. This is based on the organism’s established anatomy, behavior, or biological classification.