Science and Technology - General Knowledge Questions

A)
Venturi scrubber
B)
Bag house filter
C)
Windrow composting
D)
Reverse Osmosis

Correct Answer :   Reverse Osmosis

A)
Propene
B)
Phenol
C)
Isoprene
D)
Formaldehyde

Correct Answer :   Isoprene

Natural rubber is an addition polymer that is obtained as a milky white fluid known as latex from a tropical rubber tree. Natural rubber is from the monomer isoprene (2-methyl-1,3-butadiene), which is a conjugated diene hydrocarbon as mentioned above.

A)
Alloy of lead and zinc
B)
Alloy of lead and tin
C)
Pure lead
D)
Pure zinc

Correct Answer :   Alloy of lead and tin

Fuse wire is made of alloy of lead and tin having low melting point of 200°C. ... Electric fuse is a safety device used to limit the current in an electric circuit which melts and breaks the circuit Whenever there is an excess flow of current in a circuit and it is the purpose.

A)
Neutrophilic, Hydrophobic
B)
Hydrophilic, neutrophilic
C)
Both the hydrophobic
D)
Hydrophilic and hydrophobic

Correct Answer :   Hydrophilic and hydrophobic

A)
Reflection of light
B)
Absorption of light
C)
Refraction of light
D)
All of the above

Correct Answer :   Reflection of light

We are able to see objects in front of us due to the light reflected by it. ... So we see the objects because it reflects light and that light enters our eyes. So the answer to the question is option (B)- The light reflected from the object enters our eyes.

A)
Cloud Bursting
B)
Earthquake
C)
Acid Rain
D)
Global Warming

Correct Answer :   Global Warming

El Niño is a climate pattern that describes the unusual warming of surface waters in the eastern tropical Pacific Ocean. El Nino is the “warm phase” of a larger phenomenon called the El Nino-Southern Oscillation (ENSO). ... El Niño was recognized by fishers off the coast of Peru as the appearance of unusually warm water.

A)
Extreme sightedness
B)
Poor sightedness
C)
Nearsightedness
D)
Far sightedness

Correct Answer :   Nearsightedness

Nearsightedness (myopia) is a common vision condition in which you can see objects near to you clearly, but objects farther away are blurry.

A)
Herbicide
B)
Pesticide
C)
Pain killer
D)
Stimulant

Correct Answer :   Pesticide

Lindane, also known as gamma-hexachlorocyclohexane, gammaxene, Gammallin, and benzene hexachloride, is an organochlorine useful as an agricultural insecticide and as a pharmaceutical agent to eliminate lice and scabies (Ahmed et al., 2008).

A)
456.2 K
B)
373.2 K
C)
270.5 K
D)
100 K

Correct Answer :   373.2 K

The freezing point of water on the Kelvin scale is 273.15 K, while the boiling point is 373.15 K.

A)
Chromium
B)
Titanium
C)
Zinc
D)
Tin

Correct Answer :   Chromium