Hard Nature Questions

66 questions

Test your knowledge with 66 hard nature trivia questions. Each question includes multiple choice options and the correct answer.

Showing page 1 of 2 (66 questions)

Question 1hard

Which of the following liquids is least viscous? Assume temperature is 25°C.

A.Acetone

B.Benzene

C.Mercury

D.Water

Reveal Answer

The correct answer is:

A. Acetone

Question 2hard

What is isobutylphenylpropanoic acid more commonly known as?

A.Aspirin

B.Ibuprofen

C.Ketamine

D.Morphine

Reveal Answer

The correct answer is:

B. Ibuprofen

Question 3hard

What causes the sound of a heartbeat?

A.Blood exiting the heart

B.Closure of the heart valves

C.Contraction of the heart chambers

D.Relaxation of the heart chambers

Reveal Answer

The correct answer is:

B. Closure of the heart valves

Question 4hard

Which of the following plastic is commonly used for window frames, gutters and drain pipes?

A.Polyethylene (PE)

B.Polypropylene (PP)

C.Polystyrene (PS)

D.Polyvinylchloride (PVC)

Reveal Answer

The correct answer is:

D. Polyvinylchloride (PVC)

Question 5hard

Which horizon in a soil profile consists of bedrock?

A.B

B.D

C.O

D.R

Reveal Answer

The correct answer is:

D. R

Question 6hard

The word "science" stems from the word "scire" meaning what?

A.To count

B.To know

C.To live

D.To measure

Reveal Answer

The correct answer is:

B. To know

Question 7hard

Which of these chemical compounds is NOT found in gastric acid?

A.Hydrochloric acid

B.Potassium chloride

C.Sodium chloride

D.Sulfuric acid

Reveal Answer

The correct answer is:

D. Sulfuric acid

Question 8hard

What is the molecular formula of Glucose?

A.C2H4O2

B.C6H12O6

C.CH4

D.K+

Reveal Answer

The correct answer is:

B. C6H12O6

Question 9hard

An organic compound is considered an alcohol if it has what functional group?

A.Aldehyde

B.Alkyl

C.Carbonyl

D.Hydroxyl

Reveal Answer

The correct answer is:

D. Hydroxyl

Question 10hard

Which of the following is considered classical conditioning?

A.Harlow’s monkey experiments

B.Pavlov's dog experiments

C.Schrödinger's cat experiment

D.Skinner box experiment

Reveal Answer

The correct answer is:

B. Pavlov's dog experiments

Question 11hard

How many objects are equivalent to one mole?

A.6.002 x 10^22

B.6.002 x 10^23

C.6.022 x 10^22

D.6.022 x 10^23

Reveal Answer

The correct answer is:

D. 6.022 x 10^23

Question 12hard

Which of the following elements is typically used in the doping of the semiconductor silicon?

A.Boron

B.Carbon

C.Iron

D.Oxygen

Reveal Answer

The correct answer is:

A. Boron

Question 13hard

Which is not a type of neuron?

A.Interneuron

B.Motor Neuron

C.Perceptual Neuron

D.Sensory Neuron

Reveal Answer

The correct answer is:

C. Perceptual Neuron

Question 14hard

What is the molecular formula of Ozone?

A.C6H2O6

B.N2O

C.O3

D.SO4

Reveal Answer

The correct answer is:

C. O3

Question 15hard

Which of the following are cells of the adaptive immune system?

A.Cytotoxic T cells

B.Dendritic cells

C.Natural killer cells

D.White blood cells

Reveal Answer

The correct answer is:

A. Cytotoxic T cells

Question 16hard

Autosomal-dominant Compelling Helio-Ophthalmic Outburst syndrome is the need to do what when seeing the Sun?

A.Cough

B.Hiccup

C.Sneeze

D.Yawn

Reveal Answer

The correct answer is:

C. Sneeze

Question 17hard

In quantum physics, which of these theorised sub-atomic particles has yet to be observed?

A.Gluon

B.Graviton

C.Tau neutrino

D.Z boson

Reveal Answer

The correct answer is:

B. Graviton

Question 18hard

All of the following human genetic haplogroup names are shared between Y-chromosome and mitochondrial DNA haplogroups EXCEPT:

A.Haplogroup J

B.Haplogroup L

C.Haplogroup T

D.Haplogroup U

Reveal Answer

The correct answer is:

D. Haplogroup U

Question 19hard

The Western Lowland Gorilla is scientifically know as?

A.Gorilla Beringei Beringei

B.Gorilla Beringei Graueri

C.Gorilla Gorilla Diehli

D.Gorilla Gorilla Gorilla

Reveal Answer

The correct answer is:

D. Gorilla Gorilla Gorilla

Question 20hard

If you planted the seeds of Quercus robur what would grow?

A.Flowers

B.Grains

C.Trees

D.Vegtables

Reveal Answer

The correct answer is:

C. Trees

Question 21hard

Which of these is a stop codon in DNA?

A.ACA

B.ACT

C.GTA

D.TAA

Reveal Answer

The correct answer is:

D. TAA

Question 22hard

What physics principle relates the net electric flux out of a closed surface to the charge enclosed by that surface?

A.Ampere's Law

B.Biot-Savart Law

C.Faraday's Law

D.Gauss's Law

Reveal Answer

The correct answer is:

D. Gauss's Law

Question 23hard

What is the name for the auditory illusion of a note that seems to be rising infinitely?

A.Fransen Effect

B.Glissandro Illusion

C.McGurck Effect

D.Shepard Tone

Reveal Answer

The correct answer is:

D. Shepard Tone

Question 24hard

What is the same in Celsius and Fahrenheit?

A.-39

B.-40

C.-42

D.32

Reveal Answer

The correct answer is:

B. -40

Question 25hard

How many protons are in an oxygen atom?

A.Eight

B.Four

C.Six

D.Two

Reveal Answer

The correct answer is:

A. Eight

Question 26hard

Muscle fiber is constructed of bundles small long organelles called what?

A.Epimysium

B.Myocardium

C.Myofiaments

D.Myofibrils

Reveal Answer

The correct answer is:

D. Myofibrils

Question 27hard

Which of the following is a major muscle of the back?

A.Trapezium

B.Trapezius

C.Trapezoid

D.Triquetrum

Reveal Answer

The correct answer is:

B. Trapezius

Question 28hard

What is the scientific name of the knee cap?

A.Femur

B.Foramen Magnum

C.Patella

D.Scapula

Reveal Answer

The correct answer is:

C. Patella

Question 29hard

What was the first organic compound to be synthesized from inorganic compounds?

A.Ethanol

B.Formaldehyde

C.Propane

D.Urea

Reveal Answer

The correct answer is:

D. Urea

Question 30hard

In physics, conservation of energy and conservation of momentum are both consequences of which of the following?

A.Bell's Theorem

B.Carnot's Theorem

C.Noether's Theorem

D.Wick's Theorem

Reveal Answer

The correct answer is:

C. Noether's Theorem

Question 31hard

Folic acid is the synthetic form of which vitamin?

A.Vitamin A

B.Vitamin B

C.Vitamin C

D.Vitamin D

Reveal Answer

The correct answer is:

B. Vitamin B

Question 32hard

Which of the following is NOT a real element?

A.Hassium

B.Lutetium

C.Praseodymium

D.Vitrainium

Reveal Answer

The correct answer is:

D. Vitrainium

Question 33hard

Which is the chemical name of H2O?

A.Ammonium chloride

B.Anhydrous Sodium Carbonate

C.Dihydrogen Monoxide

D.Manganese dioxide

Reveal Answer

The correct answer is:

C. Dihydrogen Monoxide

Question 34hard

What common name is given to the medial condition, tibial stress syndrome (MTSS)?

A.Carpal Tunnel

B.Housemaid's Knee

C.Shin Splints

D.Tennis Elbow

Reveal Answer

The correct answer is:

C. Shin Splints

Question 35hard

What element on the periodic table has 92 electrons?

A.Hydrogen

B.Iron

C.Sulfur

D.Uranium

Reveal Answer

The correct answer is:

D. Uranium

Question 36hard

Where is the Gluteus Maximus muscle located?

A.Arm

B.Butt

C.Head

D.Torso

Reveal Answer

The correct answer is:

B. Butt

Question 37hard

The 'Islets of Langerhans' is found in which human organ?

A.Brain

B.Kidney

C.Liver

D.Pancreas

Reveal Answer

The correct answer is:

D. Pancreas

Question 38hard

What is "Stenoma"?

A.A combat stimulant from WW2

B.A genus of moths

C.A port city in the carribean

D.A type of seasoning

Reveal Answer

The correct answer is:

B. A genus of moths

Question 39hard

What nucleotide pairs with guanine?

A.Adenine

B.Cytosine

C.Thymine

D.Uracil

Reveal Answer

The correct answer is:

B. Cytosine

Question 40hard

Which scientific unit is named after an Italian nobleman?

A.Hertz

B.Ohm

C.Pascal

D.Volt

Reveal Answer

The correct answer is:

D. Volt

Question 41hard

What is the unit of electrical inductance?

A.Coulomb

B.Henry

C.Mho

D.Weber

Reveal Answer

The correct answer is:

B. Henry

Question 42hard

In the Scoville scale, what is the hottest chemical?

A.Capsaicin

B.Dihydrocapsaicin

C.Resiniferatoxin

D.Tinyatoxin

Reveal Answer

The correct answer is:

C. Resiniferatoxin

Question 43hard

How many legs is it biologically impossible for a centipede to have?

A.100

B.26

C.50

D.74

Reveal Answer

The correct answer is:

A. 100

Question 44hard

On the Beaufort Scale of wind force, what wind name is given to number 8?

A.Breeze

B.Gale

C.Hurricane

D.Storm

Reveal Answer

The correct answer is:

B. Gale

Question 45hard

Which of the following is NOT a word used to describe an earthquake?

A.Drop-slide

B.Foreshock

C.Strike-slip

D.Temblor

Reveal Answer

The correct answer is:

A. Drop-slide

Question 46hard

What is the scientific name of the red fox?

A.Red Fox

B.Vulpes Redus

C.Vulpes Vulpes

D.Vulpes Vulpie

Reveal Answer

The correct answer is:

C. Vulpes Vulpes

Question 47hard

Burning which of these metals will produce a bright white flame?

A.Copper

B.Lead

C.Lithium

D.Magnesium

Reveal Answer

The correct answer is:

D. Magnesium

Question 48hard

Which constellation contains the center of the Milky Way?

A.Capricornus

B.Ophiuchus

C.Sagittarius

D.Scorpius

Reveal Answer

The correct answer is:

C. Sagittarius

Question 49hard

What does the term "isolation" refer to in microbiology?

A.A lack of nutrition in microenviroments

B.Testing effects of certain microorganisms in an isolated enviroments, such as caves

C.The nitrogen level in soil

D.The separation of a strain from a natural, mixed population of living microbes

Reveal Answer

The correct answer is:

D. The separation of a strain from a natural, mixed population of living microbes

Question 50hard

What is the scientific name for the extinct hominin known as "Lucy"?

A.Australopithecus Afarensis

B.Australopithecus Africanus

C.Australopithecus Antaris

D.Australopithecus Architeuthis

Reveal Answer

The correct answer is:

A. Australopithecus Afarensis

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