General Science Questions and Answers | General Knowledge

1.

Which of the following parts of the sun is easily visible only during a total solar eclipse?

   A.) sunspots
   B.) corona
   C.) photosphere
   D.) core

Answer: Option 'B'

​corona

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2.

Potassium Permanganate is used for purifying drinking water, because

   A.) it is a sterilising agent
   B.) it is a reducing agent
   C.) it dissolves the impurities of water
   D.) it is an oxidising agent

Answer: Option 'D'

it is an oxidising agent

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3.

What does airbag, used for safety of car driver, contain?

   A.) Sodium bicarbonate
   B.) Sodium nitrite
   C.) Sodium azide
   D.) Sodium peroxide

Answer: Option 'C'

​Sodium azide

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4.

In fireworks, the green flame is produced because of

   A.) Sodium
   B.) Potassium
   C.) Barium
   D.) Mercury

Answer: Option 'C'

​Barium

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5.

As you go down into a well, your weight

   A.) increases slightly
   B.) remains exactly the same
   C.) decreases slightly
   D.) None of the above

Answer: Option 'C'

decreases slightly

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6.

The weight of an object will be minimum when it is placed at?

   A.) The Equator
   B.) The North Pole
   C.) The South Pole
   D.) The center of the Earth

Answer: Option 'D'

The weight of an object is minimum when it is placed at the center of the earth because when an object is in the center, it experiences gravitational pull from all directions.

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7.

The blue colour of the clear sky is due to

   A.) Reflection of light
   B.) Diffraction of light
   C.) Dispersion of light
   D.) Refraction of light

Answer: Option 'C'

A clear cloudless day-time sky is blue because molecules in the air dissipate blue light from the sun more than they dissipate red light. When we look towards the sun at sunset, we see red and orange hues on the grounds because the blue light has been scattered out and away from the line of sight.

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8.

Which one of the following types of waves are used in a night vision apparatus?

   A.) Infra-red waves
   B.) Microwaves
   C.) Radio waves
   D.) None of the above

Answer: Option 'A'

​Infra-red waves

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9.

Which of the following is used in pencils?

   A.) Graphite
   B.) Charcoal
   C.) Phosphorous
   D.) Silicon

Answer: Option 'A'

Graphite

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10.

A married couple adopted a male child. A few years later, twin boys were born to them. The blood group of the couple is AB positive and O negative. The blood group of the three sons is A positive, B positive, and O positive. The blood group of the adopted son is

   A.) O positive
   B.) A positive
   C.) B positive
   D.) Cannot be determined on the basis of the given data

Answer: Option 'A'

O positive

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11.

When a gas is turned into a liquid, the process is called

   A.) deposition
   B.) sublimation
   C.) evaporation
   D.) condensation

Answer: Option 'D'

condensation

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12.

If a tropical rain forest is removed, it does not regenerate quickly as compared to a tropical deciduous forest. This is because 

   A.) The soil of rain forest is deficient in nutrients
   B.) Propagules of the trees in a rain forest have poor viability
   C.) The rain forest species are slow growing
   D.) Exotic species invade the fertile soil of rain forest

Answer: Option 'A'

The soil of rain forest is deficient in nutrients

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13.

At present, scientists can determine the arrangement or relative positions of genes of DNA sequences on a chromosome. How does this knowledge benefit us?
1. It is possible to know the pedigree of livestock.
2. It is possible to understand the causes of all human diseases.
3. It is possible to develop disease-resistant animal breeds.
Which of the statements given above is/are correct?

   A.) 1 and 2 only
   B.) 2 only
   C.) 1 and 3 only
   D.) 1, 2 and 3

Answer: Option 'D'

1, 2 and 3

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14.

Which of the following has got more heat capacity?

   A.) Iron piece
   B.) Gold piece
   C.) Water
   D.) Benzene

Answer: Option 'C'

​Water

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15.

The radioactive element most commonly detected in humans is

   A.) potassium-40
   B.) cobalt-60
   C.) iodine-131
   D.) plutonium-238

Answer: Option 'A'

potassium-40

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16.

The gases used in different types of welding would include

   A.) oxygen and hydrogen
   B.) oxygen and acetylene
   C.) oxygen, acetylene and argon
   D.) oxygen, hydrogen, acetylene and nitrogen

Answer: Option 'B'

oxygen and acetylene

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17.

What happens when some charge is placed on a soap bubble?

   A.) Its radius decreases
   B.) The bubble Collapses
   C.) Its radius increases
   D.) The bubble expands

Answer: Option 'C'

Its radius increases

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18.

The filament of an electric bulb is made of

   A.) graphite
   B.) iron
   C.) tungsten
   D.) nichrome

Answer: Option 'C'

​tungsten

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19.

The uranium fuel used worldwide is mainly in the form of 

   A.) U3O8
   B.) UO2
   C.) UF6
   D.) U metal

Answer: Option 'B'

​UO2

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20.

Which of the following plants is not capable of manufacturing own food?

   A.) Carrot
   B.) Mushroom
   C.) Cabbage
   D.) Algae

Answer: Option 'B'

​Mushroom

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21.

The theory which advocates that living beings can arise only from other living beings is termed

   A.) Bio-genesis
   B.) Abiogenesis
   C.) Catastrophism
   D.) Cosmozoic

Answer: Option 'A'

Bio-genesis

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22.

Suppose if we measure the time lapse between the two Sunsets by sitting in the beach , from this we can estimate 

   A.) The radius of the earth
   B.) The radius of the sun
   C.) The depth of the ocean
   D.) The distance between the sun and earth

Answer: Option 'A'

The radius of the earth

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23.

What is the scientific name for washing soda?

   A.) Sodium carbonate
   B.) Sodium bicarbonate
   C.) Calcium carbonate
   D.) Calcium bicarbonate

Answer: Option 'A'

Sodium carbonate

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24.

The intencity of Earthquakes is measured on

   A.) Mercalli scale
   B.) Richter scale
   C.) Secant scale
   D.) Beaufort scale

Answer: Option 'A'

Mercalli scale

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25.

What invisible force holds you onto the earth, so that you don't simply fall off?

   A.) wind
   B.) magnetism
   C.) gravity
   D.) speed

Answer: Option 'C'

gravity

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26.

Persons with which blood group are called universal donors?

   A.) AB
   B.) A
   C.) O
   D.) B

Answer: Option 'C'

O

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27.

Which one of the following types of laser is used in laser printers?

   A.) Semiconductor laser
   B.) Gas laser
   C.) Dye laser
   D.) Excimer laser

Answer: Option 'A'

Semiconductor laser

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28.

Seawater (i.e. saltwater) freezes at: 

   A.) at a slightly higher temperature than fresh water
   B.) at a slightly lower temperature than fresh water.
   C.) the same temperature as fresh water.
   D.) seawater does not freeze.

Answer: Option 'B'

at a slightly lower temperature than fresh water.

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29.

In a laser (say neon laser) all the atoms emit the light waves of

   A.) Same frequency
   B.) Same phase
   C.) Same amplitude
   D.) All the above

Answer: Option 'D'

All the above

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30.

The Mudumalai National Park is located in which state  ?

   A.) Tamil Nadu
   B.) Chattisgarh
   C.) Haryana
   D.) Karnataka

Answer: Option 'A'

​Tamil Nadu

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31.

What does airbag, used for safety of car driver, contain?

   A.) Sodium nitrite
   B.) Sodium azide
   C.) Sodium bicarbonate
   D.) Sodium peroxide

Answer: Option 'B'

Sodium azide

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32.

The blue colour of the clear sky is due to 

   A.) Diffraction of light
   B.) Reflection of light
   C.) Dispersion of light
   D.) Refraction of light

Answer: Option 'C'

Dispersion of light

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33.

Of the following, which element is common to all acids

   A.) hydrogen
   B.) carbon
   C.) sulphur
   D.) oxygen

Answer: Option 'A'

hydrogen

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34.

Water soluble vitamin include

   A.) vitamin C
   B.) niacin
   C.) riboflavin
   D.) all of the above

Answer: Option 'D'

all of the above

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35.

What is scientific name of " Tulsi " ?

   A.) Zea Mays
   B.) Gossypium Herbaceum
   C.) Ocimum Sanctum
   D.) Cojonus Cgjan

Answer: Option 'C'

Ocimum Sanctum

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36.

As you go down into a well, your weight 

   A.) increases slightly
   B.) decreases slightly
   C.) remains exactly the same
   D.) none of these

Answer: Option 'B'

decreases slightly

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37.

The hardened material available on earth is

   A.) Gold
   B.) Diamond
   C.) Iron
   D.) Platinum

Answer: Option 'B'

​Diamond

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38.

Special 3-D photographs which have been taken with laser beams (and which make the objects look real) are called what?

   A.) Portraits
   B.) DVD
   C.) 3D special effects
   D.) Holograms

Answer: Option 'D'

Holograms

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39.

Which of the following metals forms an amalgam with other metals?

   A.) Mercury
   B.) Zinc
   C.) Tin
   D.) Lead

Answer: Option 'A'

Mercury

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40.

The man who is specialist in wine making is called as?

   A.) Oenologist
   B.) Grapologist
   C.) Wenologist
   D.) None of these

Answer: Option 'A'

Oenologist

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41.

What is laughing gas?

   A.) Nitrous Oxide
   B.) Carbon monoxide
   C.) Hydrogen peroxide
   D.) Carbon monoxide

Answer: Option 'A'

Nitrous Oxide

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42.

The Van Vihar National Park is loacted in which state?

   A.) Andhra Pradesh
   B.) Madhya Pradesh
   C.) Telangana
   D.) Bihar

Answer: Option 'B'

The Van Vihar National Park is located in Bhopal, the capital city of Madhya Pradesh. It covers an area of about 4.45 sq.km and is home to Bengal Tiger, Asiatic Lions, wild cats, Indian Wolf, Sloth Bear, Red Fox, Indian Jackal, Wild Dog, Mongoose, Striped Hyena, Mugger Crocodile, Gharial, Snakes, Python, etc.

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43.

'Pencillin' which is used as an antibiotic is obtained from 

   A.) Algae
   B.) Fungi
   C.) Bacteria
   D.) Lichens

Answer: Option 'B'

​Fungi

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44.

Where is the headquarters of the United Nations Economic and Social Council (ECOSOC)  ?

   A.) Berlin
   B.) Spain
   C.) London
   D.) New York

Answer: Option 'D'

New York
The Economic and Social Council (ECOSOC) is one of the six principal organs of the United Nations for coordinating the economic, social and environmental issues, as well as for implementing internationally agreed development goals. Recently, it is in news because India has been re-elected to the United Nations ECOSOC for another 3-year term. India was among 18 nations to win election to the Economic and Social Council (ECOSOC). India obtained 183 votes, the second highest after Japan in the Asia Pacific category. The elected members of ECOSOC for a three-year term beginning 1 January, 2018 are Belarus, Ecuador, El Salvador, France, Germany, Ghana, India, Ireland, Japan, Malawi, Mexico, Morocco, Philippines, Spain, Sudan, Togo, Turkey and Uruguay. The headquarters of the ECOSOC is located in New York, Unites States.

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45.

The first synthetic fibre made by man was ____ ?

   A.) Polyester
   B.) Rayon
   C.) Nylon
   D.) Terycott

Answer: Option 'C'

​Nylon

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46.

The amount of water vapour in the air is called...?

   A.) sunsafe factor
   B.) humidity
   C.) snow
   D.) water cycle

Answer: Option 'B'

humidity 

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47.

Tides are primarily a result of the  ____ ?

   A.) Attraction of the Moon
   B.) Ocean Currents
   C.) Farrel's law
   D.) Earth's pressure system

Answer: Option 'A'

​Attraction of the Moon

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48.

Radio Carbon Dating is use to estimate the age of _____ ?

   A.) Monuments
   B.) Soil
   C.) Fossils
   D.) Rocks

Answer: Option 'C'

​Fossils

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49.

Nobel Prize is established in?

   A.) 1901
   B.) 1951
   C.) 1911
   D.) 1931

Answer: Option 'A'

1901

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50.

Garampani sanctuary is located at

   A.) Diphu, Assam
   B.) Gangtok, Sikkim
   C.) Junagarh, Gujarat
   D.) Kohima, Nagaland

Answer: Option 'A'

Famous for Hot water springs and homeland for Hoolock Gibbons and Golden Langurs, The Garampani Wildlife Sanctuary is situated in Karbi Anglong of Diphu area. One of the oldest Sanctuary containing Hot water spring and waterfalls and surrounded by Nambour Sanctuary having 51 rare species of Orchid. It has a total area of 6 sq. Km.

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