Introduction
What is the definition of Science?
Science is the study of the nature and behavior of natural things and the knowledge that we obtain about them. A science is a particular branch of science such as physics, chemistry, or biology. Physics is the best example of a science which has developed strong, abstract theories.
Physics - The branch of science concerned with the nature and properties of matter and energy. The subject matter of physics includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms.
Biology - The study of living organisms, divided into many specialized fields that cover their morphology, physiology, anatomy, behavior, origin, and distribution.
Chemistry - The branch of science concerned with the substances of which matter is composed, the investigation of their properties and reactions, and the use of such reactions to form new substances.
The article General Science Facts provides questions with answers useful to the candidates preparing for General Science module for the competitive exams such as UPSC, IAS, IES, RRB, RRB JE, SSC, SSC JE etc.
Quiz
1. Rainbow is formed due to a combination of ?
Answer - Dispersion and total internal reflection
2. Which is considered as the drug of last resort for human being?
Answer - Streptomycin
Explanation -
Streptomycin is an antibiotic used to treat a number of bacterial infections. This includes tuberculosis, Mycobacterium avium complex, endocarditis, brucellosis, Burkholderia infection, plague, tularemia, and rat bite fever.
3. Litmus paper used in laboratory from which obtained?
Answer - Lichen
Explanation -
A lichen is a composite organism that arises from algae and/or cyanobacteria living among filaments of a fungus in a symbiotic relationship.
4. Which is the highest grade of coal whose surface is shining and has the highest calorific value?
Answer - Anthracite
5. Plants which lack true roots, stems and leaves are called by which name?
Answer - Thallophytes
6. Which is the highest peak in South India?
Answer - Anaimudi
Explanation -
Anamudi or Anai Mudi is a mountain located in the Indian state of Kerala. It is the highest peak in the Western Ghats and South India, at an elevation of 2,695 metres, and a topographic prominence of 2,479 metres.
7. Glass is made of the mixture of which things?
Answer - Sand and silicates
8. What are the Doldrums?
Answer - Equatorial zone with low pressure
9. In human beings, What is the opening of the stomach into the small Intestine called?
Answer - Pylorus
10. Which winds are flowing from sub tropical high pressure to sub polar low pressure?
Answer - Westerlies
1. What is the outermost layer of Sun called?
Answer - Corona
2. Which kinds of lenses are used to treat Astigmatism ?
Answer - Cylindrical
Explanation -
Astigmatism is a type of refractive error in which the eye does not focus light evenly on the retina. This results in distorted or blurred vision at all distances.
3. What is the largest ecosystem of the Earth?
Answer - Hydrosphere
4. Which is a major constituent of Bio gas?
Answer - Methane
5. Cooking gas is a mixture of which gases?
Answer - Propane and Butane
6. What is a mixture of potassium nitrate, powdered charcoal and sulphur called
Answer - Gun powder
7. Which Pollination takes place with the help of water is called?
Answer - Hydrophyily
8. In which hemisphere does India lie?
Answer - Northern and eastern
9. Spice saffron is obtained from which part of plant?
Answer - Stigma
10. What is the permissible level of noise in a silent zone at daytime?
Answer - 75db
Explanation -
NIOSH Daily Permissible Noise Level Exposure (before permanent hearing loss)
| Hours per day | Sound Level |
|---|---|
| 8 | 85 dBA |
| 6 | 86 dBA |
| 4 | 88 dBA |
| 3 | 89 dBA |
| 2 | 90 dBA |
| 1.5 | 92 dBA |
| .5 | 94 dBA |
| 0.25 or less | 100 dBA |
| 0 | 112 dBA |
1. Rutherford’s scattering experiment related to the size of which thing?
Answer - Nucleus
Explanation -
Rutherford's alpha particle scattering experiment shows the presence of nucleus in the atom
2. Which type of cell has the ability to develop into any type of all?
Answer - Stem Cells
Explanation -
Stem cells are mother cells that have the potential to become any type of cell in the body. One of the main characteristics of stem cells is their ability to self renewable
3. Which gas is absorbed during photosynthesis?
Answer - [latex]{CO}^{2}[/latex]
4. For crop does India have the largest cultivated area in the world?
Answer - Rice
5. Which is used as a fuel in Nuclear power stations in India?
Answer - Thorium
6. What is the capital of Lakshadweep?
Answer - Kavaratti
7. The albedo of which cloud is the highest?
Answer - Cirrus cloud
8. Which glass is used in bullet proof screens?
Answer - Reinforced glass
9. Because of which factor, clouds do not precipitate in deserts?
Answer - Low humidity
10. For a body moving with constant speed in a horizontal circle, what remains constant?
Answer - [latex]{E}_{K} = \frac {1}{2} m {V}^{2}[/latex]
[latex]{E}_{K}[/latex] = Kinetic energy of object
m = mass of object
v = speed of object
1. The high altitude tropical forest which has dwarfed trees is known by which name?
Answer - Elfm forest
2. The food material in fungi is stored in which form?
Answer - Glycogen
3. Which is a free living bacteria that help in nitrogen fixation?
Answer - Azotohacter
4. Which bacteria helps in improving the soil fertility?
Answer - Rhizobrum
5. The sun is visible a little before the actual sunrise because of which reaction?
Answer - Atmospheric refraction
6. Which Bacteria commonly lives in the intestine of human?
Answer - Escherichia coli
7. What is the minimum forest cover to maintain ecological balance?
Answer - 33 %
8. By which force can fat be separated from milk in a cream separator?
Answer - Centrifugal force
9. Who appoints the Governor of Jammu and Kashmir?
Answer - President
10. EI Nino current appears along the coast of which country?
Answer - Peru
1. If we move from the equator to a pole, what will be the value of g?
Answer - Increases
2. Why are In the northern hemisphere, currents deflected to their right?
Answer - Due to Coriolis force
3. Which law of thermodynamics introduces the concept of entropy?
Answer - Second law
4. What is the principle by which a cooling system (Radiator) in a motor car works?
Answer - Convection
Explanation -
Convection is heat transfer by mass motion of a fluid such as air or water when the heated fluid is caused to move away from the source of heat, carrying energy with it Thermal conduction is the transfer of heat (internal energy) by microscopic collisions of particles and movement of electrons within a body.
5. What does Nail polish remover contain?
Answer - Acetone
6. Which tissue in man where no cell division, occurs after birth?
Answer - Nerves
7. Chlorine acts as a bleaching agent only in the presence of which thing?
Answer - Moisture
8. Which are the The best and the poorest conductors of heat respectively?
Answer - Silver (Ag), and lead (Pb)
9. Which colloidal solution is used in photography?
Answer - Colloidal silver bromine
Explanation -
Bromine is the only nonmetal element that naturally takes form as a liquid under normal circumstances. It easily evaporates, and in its gaseous state has a smell similar to that of chlorine.
10. Where are diesel locomotives manufactured?
Answer - Varanasi
- Chittaranjan Locomotive Works, Chittaranjan.
- Diesel Loco Modernization Works, Patiala.
- Integral Coach Factory, Chennai.
- Rail Coach Factory, Kapurthala.
- Rail Wheel Factory, Bangalore.
1. During the fermentation of sugar, which enzyme which converts glucose into ethyl alcohol?
Answer - zymase
2. Which human organ is most susceptible to harmful radiations?
Answer - Lungs
3. A person feel fatigued due to deposition of which acid in their muscles?
Answer - Lactic Acid
4. Which planet take maximum time for one revolution around the Sun?
Answer - Jupiter
5. When the wind is deflected due to the rotation of the Earth, what is it called?
Answer - Geostropic wind
6. Which is used in storage batteries?
Answer - Lead
7. The problem of leaching of the soil is more pronounced in the areas how rainfall isthere?
Answer - Heavy rainfall
8. What is most suitable for the core of an electromagnet?
Answer - Soft iron
9. Which insect spreads kala-azar
Answer - Sand fly
10. Which is the main ingredient in cement?
Answer - Lime stone
1. Which industry produces the most non-biodegradable wastes?
Answer - Thermal power plants
2. Which peninsular river is westward flowing?
Answer - Tapti
3. A convex mirror makes a good rear view mirror for a car. Why?
Answer - It forms erect, reduced images
4. Which type of the fruit formed without fertilization?
Answer - Parthenocarpy
5. ndian first took part in the Olympic Games in which year?
Answer - 1920 Antwerp, Belgium
Explanation -
India first participated at the Olympic Games in 1900, with a lone athlete (Norman Pritchard) winning two medals both silver- in athletics. The nation first sent a team to the Summer Olympic Games in 1920, Three athletes and two wrestlers could not win any medal.
6. Which is the plant hormone that induces cell division?
Answer - Auxins
7. In vulcanization, with which the natural rubber is heated?
Answer - Sulphur
8. Which planet of the solar system spins on its axis at the fastest rate?
Answer - Jupiter
9. Which algae is used as bio fertilizer in the production of crop paddy?
Answer - Blue green algae
10. Which unicellular algae are used as source of oxygen in space research?
Answer - Chlorella
1. Which region gets no rainfall throughout the year?
Answer - The Tundra Region
2. Which gas has maximum calorific value?
Answer - Oil gas
3. A molecule of glucose on complete oxidation yields howmany ATP molecules in case of aerobic respiration?
Answer - 36
4. Which river flows between the Vindhya and Satpura ranges?
Answer - Narmada
5. Which is the type of movement that occurs during opening and closing of flower?
Answer - Nastic movement
6. Which gland is responsible for the secretion of insulin?
Answer - Pancrease
7. Which type of rainfall that occurs when wind rises up along a hill or mountain barrier?
Answer - Orographic
8. Which are the most commonly used chemicals in the artificial rain making or cloud seeding?
Answer - Silver Iodide (Agl)
9. What happens, When water is heated from 0°C to 10°C the volume of water?
Answer - First decreases then increases
10. What do you understand by the word regur?
Answer - Black soil found in the Deccan
Explanation -
Black soil is also known as Black Cotton Soil as cotton is an important crop which is grown in this type of soil. The soil content is rich in calcium carbonate, potash, lime and magnesium carbonate but has poor phosphorus content. It is mostly found in areas such as Gujarat, Madhya Pradesh and Maharashtra. It is also found in states like Tamil Nadu, Andhra Pradesh and Karnataka.
1. Besides water and light which is more essential as a raw material for photosynthesis?
Answer - [latex]{co}_{2}[/latex]
2. Of the floating iceberg in the sea, how much is the portion remaining above the sea level?
Answer - [latex]{\frac {1}{10}}^{th}[/latex]
3. Which salt is found in bone in largest amount?
Answer - Calcium phosphate
4. Which is a strong smelling agent added to LPG cylinder to help in the detection of gas leakage?
Answer - Thioethanol
5. Food prepared by plant, through which is transported to different part of plant?
Answer - Phloem
6. What is responsible for blue body syndrome?
Answer - Nitrate
7. Inside the body, why does blood not coagulate?
Answer - Due to the presence of heparin
8. Which river flows through a rift valley?
Answer - Narmada
9. By whom are the planets are kept in motion in their respective orbits?
Answer - Gravitation and centrifugal force
10. BCG vaccination (Bacillus Calmette Guerine) is injected to get immunity from which disease?
Answer - Tuberculosis
1. Which chemical is used for preserving fruit juices?
Answer - Sodium benzoate
Explanation -
Some examples: Used as food preservatives are ethylenediamine-tetraacetic acid (EDTA), citric acid, sorbitol, and tartaric acid
2. Among the biotic components of the ecosystem, the producer system is ?
Answer - Plants
3. Which group of gases contribute to the 'Green House Effect' ?
Answer - Carbon dioxide and Methane
4. Which is the sweetest natural sugar ?
Answer - Fructose
5. Blue colour of sky is due to phenomenon of
Answer - Scattering
6. When light splits by a glass prism into seven colours, the phenomenon is called?
Answer - Dispersion of light
7. Thermal radiations are electromagnetic wave belonging to which region?
Answer - Infrared Region
8. Which electromagnetic wave has the longest wavelength?
Answer - Radio
9. Which is the most of India’s rainfall?
Answer - Cyclonic
Explanation -
A satellite image shows massive cloud coverage over Rajasthan and movement of cyclone Komen in the Bay of Bengal
10. Which is present in the largest amount in terms of percent by mass in the Earth’s crust
Answer - Oxygen
1. Which ore contains both calcium and
magnesium?
Answer - Dolomite
2. Deficiency of which vitamin causes knock-knee, bow legs and pigeon
chest in children?
Answer - Vitamin D
Diseases Caused due to Deficiency to Deficiency of Minerals
3. Indian sovereignty in sea extends up to how many nautical miles?
Answer - 12
Explanation -
An exclusive economic zone (EEZ) is a sea zone prescribed by the United Nations Convention on the Law of the Sea over which a state has special rights regarding the exploration and use of marine resources, including energy production from water and wind. It stretches from the baseline out to 200 nautical miles (nmi) from its coast.
4. What is the proportion of red blood corpuscles and white blood corpuscles in human body?
Answer - 500 : 1
| Ore Name | Chemical Name | Metal Present |
|---|---|---|
| Hematite | Iron Oxide | Iron |
| Bauxite | Aluminum oxide | Aluminum |
| Galena | Lead sulphide | Lead |
| Cinnabar | Mercury Sulphide | Mercury |
| Malachite | Copper Carbonate | Copper |
| Vitamin | Diseases and ther symptoms | Available from |
|---|---|---|
| A (Retinol) | poor vision | spinach, carrots, butter, mangoes |
| [latex]{B}_{1}[/latex] | extreme weakness, beri-beri | eggs, meat, yeast |
| [latex]{B}_{2}[/latex] | retarded growth, bad skin | green leafy vegtables, beans, peas, milk |
| [latex]{B}_{12}[/latex] | anaemia | non-vegetarian food like meat |
| C (Ascorbic acid) | scurvy, swollen gums, loose teeth | lime, lemon, oranges |
| D (Calciferol) | rickets, brittle bones in children which break or bead easily | milk, fish, liver oil |
| K(phylloguinone) | excessive bleeding due to injury | green leafy vegetables |
| Name of minerals | Diseases and their symptoms | |
|---|---|---|
| Calcium | brittle bones, excessive bleeding, bad muscular movement | milk, green leafy vegetables |
| Phosphorous | bad teeth and bones | pulses, cereals, milk |
| Iron | anaemia, lack of red blood cells | green vegetables, pulses, meat |
| Iodine | goitre, enlarged thyroid gland | fish, salt from sea water |
| Copper | low appetite, retarded growth | pulses and leafy vegetables |
| Red Blood cell | Eeythrocytes | lifetime of about 120 days |
| White Blood Cells | Leukocytes | They live for about 3 to 4 days |
| Platelets (55% of the volume composed of plasma) | Thrombocytes | Lifespan of a platelet is normally just 5 to 9 days |