General Science Questions and Answers | General Knowledge

1.

The hardened material available on earth is

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

Answer: Option 'B'

​Diamond

2.

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

3.

Which of the following has got more heat capacity?

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

Answer: Option 'C'

​Water

4.

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

5.

The Mudumalai National Park is located in which state  ?

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

Answer: Option 'A'

​Tamil Nadu

6.

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

7.

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

8.

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

9.

The filament of an electric bulb is made of

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

Answer: Option 'C'

​tungsten

10.

How many years it takes for Pluto to Orbit the Sun?

   A.) 76 yrs
   B.) 144 yrs
   C.) 198 yrs
   D.) 248 yrs

Answer: Option 'D'

It takes 248 yrs for Pluto to orbit the Sun.

11.

Fuse Wire is Made of?

   A.) Copper
   B.) an alloy of Nickel and Lead
   C.) an alloy of Tin and Lead
   D.) Nickel

Answer: Option 'C'

​an alloy of Tin and Lead

Fuse Wire is Made of an alloy of Tin and Lead.

If too high a current flows, the element rises to a higher temperature and either directly melts, or else melts a soldered joint within the fuse, opening the circuit. Thefuse element is made of an alloy of Tin and Lead to provide stable and predictable characteristics.

12.

Of the following, which element is common to all acids

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

Answer: Option 'A'

hydrogen

13.

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

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

Answer: Option 'C'

​Fossils

14.

The Ozone Layer restricts from

   A.) Infrared Rays
   B.) Radio waves
   C.) Ultraviolet Radiation
   D.) X-Rays and Gamma Rays

Answer: Option 'C'

The Ozone layer which is present in the Earth's atmosphere protects it by restricting from UV or Ultraviolet radiation, the dangerous rays contained by Sun.

15.

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

16.

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.

17.

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

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

Answer: Option 'B'

humidity 

18.

The Rain Shadow Effect is associated with

   A.) Convectional rainfall
   B.) Cyclonic rainfall
   C.) Frontal rainfall
   D.) Orographic rainfall

Answer: Option 'D'

Orographic precipitation or Rain produced when moist air is lifted as it moves over a mountain range. As the air rises and cools, orographic clouds form and serve as the source of the precipitation, most of which falls upwind of the mountain ridge.

Some also falls a short distance downwind of the ridge and is sometimes called spillover. On the lee side of the mountain range, rainfall is usually low, and the area is said to be in a Rain Shadow

19.

The intencity of Earthquakes is measured on

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

Answer: Option 'A'

Mercalli scale

20.

The first synthetic fibre made by man was ____ ?

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

Answer: Option 'C'

​Nylon


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