MCQs On General Science, General Science MCQs With Answers

This set contains various important MCQs on general science for competitive exams. Solve these best MCQs on general science to check and enhance your level of preparation for competitive exams.

Also Check: MCQs On Light and Optics

Also Check: Best MCQs on Mechanics

MCQs On General Science for competitive Exams

What is the SI unit of electric current?

  1. Candela
  2. Ampere
  3. Pascal
  4. Mole

Ampere


The most abundant gas in atmosphere is:

  1. Nitrogen
  2. Oxygen
  3. Carbon dioxide
  4. Argon

Nitrogen. Of all the gases present in the atmosphere, the most abundant is Nitrogen (78%) followed by Oxygen (21%), then by Argon (0.9%) and Carbondioxide (0.03%).


The atomicity of Helium is:

  1. 1
  2. 2
  3. 3
  4. 4

1. Atomicity refers to the number of atoms in the molecules of an element. Since, Helium is an inert gas, therefore it does not react with other helium atoms. Owing to this reason, it exists as a single atom and therefore its atomicity is one


Which vitamin is also known as Thiamine?

  1. Vitamin C
  2. Vitamin B1
  3. Vitamin D
  4. Vitmain K

Vitamin B1


What is the audible sound range for human beings?

  1. 20 Hz to 2000 Hz
  2. 20 Hz to 200 KHz
  3. 20 Hz to 20 KHz
  4. 20 Hz to 20000 KHz

20 Hz to 20 KHz


Which of the following quantities is neither a scalar nor a vector quantity.

  1. Momentum
  2. Electric Current
  3. Speed
  4. Accelaration

Electric current


The process of breaking down of molecules in absence of oxygen is known as:

  1. Apoxia
  2. Hypoxia
  3. Aerobic respiration
  4. Anaerobic respiration

Anaerobic respiration


Eutrophication leads to:

  1. Algal death
  2. Algal bloom
  3. Algal senescence
  4. none of the above

Algal bloom. Eutrophication is the process by which an entire body of water, or parts of it, becomes progressively enriched with minerals and nutrients. Due to eutrophication, Algae enjoy a luxurious growth and this phenomenon is known as Algal Bloom


The plants that grow in shade are known as:

  1. Sciophytes
  2. Heliophytes
  3. Xerophytes
  4. Shadophytes

Sciohytes. Scio means shade and phytes means plants. SO the plants that love shade are called sciophytes. Similarly Heli means Sun and Phytes means plants. So the plants that love sunlight are called Heliophytes. In the same way, Xer means Dry or desertic and phytes means plants, so the plants growing in desertic conditions are called xerophytes.


Which of the following has the lowest frequency in an electromagnetic spectrum?

  1. Infra red rays
  2. Radio waves
  3. Micro waves
  4. Gamma Rays

Radio waves. Electromagnetic spectrum can be remembered as GXUVIMR, where G= Gamma rays, X= Xrays, U= ultraviolet rays, V=visible rays, I= infrared rays, M=micro wwaves, R=radio waves. The frequency and energy decreas from G to R, while as the wavelength increases from G to R.


Which of the following is not required for photosynthesis?

  1. Water
  2. Sunlight
  3. Carbondioxide
  4. Chloroform

Chloroform. There are 4 essential ingredents for photosynthesis to occur. They are water, sunlight, carbondioxide and chlorophyll


Which of the following is known as “Power House of Cell”?

  1. Chloroplasts
  2. Lysosomes
  3. Mitochondria
  4. Ribosomes

Mitochondria are called the power house of cell. Chloroplasts are the organalles where photosynthesis occurs and Ribosomes are the cell organalles where protein synthesis occurs. Lysosomes are called the suicidal bags of a cell


Which law says that “to every action, there is equal and opposite reaction”?

  1. Newtons first law
  2. Keplers first law
  3. Newtons third law
  4. Keplers third law

Newtons third law. According to Newton’s third law of motion, for every action, there is equal and opposite reaction. The kepler’s laws are related to the motion of planets around stars, so they are also known as laws of planetary motion and none of them says that to every action, there is equal and opposite reaction


The property of existence of two or more different physical forms of a chemical element is known as:

  1. Polymorphism
  2. Allotropy
  3. Ketotropy
  4. Pleiotropy

Allotropy


To balance a chemical equation, which of the following principles must be conserved:

  1. Principle of conservation of mass
  2. Principle of conservation of momentum
  3. Principle of conservation of energy
  4. Principle of conservation of angular momentum

Principle of conservation of mass must be followed. The other three principles are related to motion and while balancing a chemical equation, we dont take them into account.


Vitamin E is particularly important for:

  1. Development of teeth.
  2. Carbohydrate metabolism.
  3. Normal activity of sex glands.
  4. General health of epithelial tissue.

Normal activity of sex glands.


Which of the following is a deficiency disease?

  1. Asthma
  2. Jaundice
  3. Scurvy
  4. Cancer

Scurvy. It is caused by the defeciancy of Vitamin C


Defeciency of Vitamin D causes:

  1. Beri Beri
  2. Rickets
  3. Pellagra
  4. Scurvy

Rickets


How many canine teeth are there in an adult human being?

  1. 2
  2. 4
  3. 6
  4. 8

4 The dental formulla for human beings is (2,1,2,3)x4


Which of the following is a vitamin?

  1. Keratin
  2. Biotin
  3. Insulin
  4. Adrenaline

Biotin


The organ which stores carbohydrates as glycogen in human body is:

  1. Intestine
  2. Stomach
  3. Pancreas
  4. Liver

Liver


A man with colour blindness will see red as:

  1. Yellow
  2. Blue
  3. Green
  4. Violet

Green


Which vitamin defeciency causes pernicious anaemia?

  1. Vitamin B1
  2. Vitamin B12
  3. Vitamin B6
  4. Vitamin C

Vitamin B12


Which is known as the “immovable property” in the cell?

  1. Carbohydrate
  2. Fat
  3. Protein
  4. Nucleic Acid

Nucleic Acid


Defeciancy of Iodine leads to:

  1. Hyperthyroidism
  2. Goitre
  3. Midgut
  4. Diabetes

Giotre


Saprophytes get their food from:

  1. living plants
  2. living animals
  3. dead and decaying material
  4. inorganic chemical compunds

dead and decaying materials


Too much consumption of tea or coffee can lead to the defeciency of:

  1. Vitamin B12
  2. Calcium
  3. Vitamin C
  4. Albumin

Calcium


Amino acids are used for the synthesis of:

  1. Alkaloids
  2. Lipids
  3. Proteins
  4. Carbohydrates

Proteins


What is the SI unit of the power of the lens?

  1. watt
  2. dioptre
  3. metre
  4. per newton

Dioptre


What is the chemical formulla for Methane?

  1. CH4
  2. C2H6
  3. C3H8
  4. C4H12

CH4


Bile is stored in:

  1. Mouth
  2. Liver
  3. Gall Bladder
  4. Stomach

Liver


Which vitamin is sythesised by sunrays in our body?

  1. Vitamin D
  2. Vitamin C
  3. Vitamin A
  4. Vitamin B

Vitamin D. This is the reason why Vitamin D is also known as sunshine vitamin


The longest part of our alimentary canal is:

  1. Large intestine
  2. Small intestine
  3. Liver
  4. Oesophagus

Small Intestine


Which lens acts as a converging lens?

  1. Concave lens
  2. Convex lens
  3. Both
  4. None

Convex lens


Lemon is sour due to the presence of:

  1. Tartaric acid
  2. Ascorbic acid
  3. Acetic acid
  4. Citric acid

Citric acid


Which gas is also known as Marsh gas?

  1. Methane
  2. Ethane
  3. Butane
  4. Propane

Methane


Who discovered magnetic effects of electric current?

  1. Max Plank
  2. Einstein
  3. Maxwell
  4. Oerested

Oerested


Animal Starch means:

  1. Cellulose
  2. Glucose
  3. Chitin
  4. Glycogen

Glycogen


Full form of DDT is:

  1. Dichloro DiVinyl Tri-Chloro-propane
  2. DiFluro Diphenyl Tri-Chloro-propane
  3. Dichloro Diphenyl Tri-Chloro-Ethane
  4. DiFluro Diphenyl Tri-Chloro-propane

Dichloro Diphenyl Tri-Chloro-Ethane


Lactose is present in:

  1. Grapes
  2. Milk
  3. Lime
  4. Milk of Magnesia

Milk


The chemical formulla for “Milk Of Magnesia” is:

  1. Mg(OH)2
  2. Ca(OH)2
  3. K(OH)2
  4. Na(OH)2

Mg(OH)2


The gas used in artificial ripening of fruits is:

  1. Acetylene
  2. Ethane
  3. Propylene
  4. Propane

Acetylene


Which of the following is used as a shaving mirror?

  1. Convex lens
  2. Concave lens
  3. Concave mirror
  4. Convex mirror

Concave mirror


Which gas is used in LPG cylinder for detecting leakage?

  1. Propane
  2. Ethyl Mercaptan
  3. Acetylene gas
  4. Calcium Carbide

Ethyl Mercaptan

These were some MCQs on general science for competitive exams. We are sure that you will find these MCQs on general science very useful and hope that you will share them with your friends.

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