Which of the following fibers is known as the strongest natural fiber?
(A) Cotton
(B) Jute
(C) Wool
(D) Silk
What is the purpose of an optical filter?
(A) Reflecting light of different colors
(B) Scattering of light into constituent colors
(C) Refraction of light of different colors
(D) Transmitting or incorporating light of different colors
What are the powerful radiations that ozone absorbs and provides protection to the biosphere called?
(A) Infra-red
(B) Gamma rays
(C) Ultra-violet rays (UV)
(D) X Rays
What is silica gel?
(A) Humidity supplier
(B) Flavoring element
(C) Drying Material
(D) Delicious food
Do biofertilizers convert nitrogen into which of the following?
(A) Nitrates
(B) Ammonia
(C) Nitrogenase
(D) Ammonia in acid
What is the most common tree species used in socio-forestry?
(A) Pipal
(B) Gulmohar
(C) Eucalyptus
(D) Mango
Which is the most active ecosystem in the atmosphere?
(A) Desert
(B) Open Sea
(C) Gulf (Estuary)
(D) Tundra
What is the best way to dispose of non-biodegradable waste?
(A) Kindle
(B) Pile up
(C) Burial
(D) Recycling
From where do male mosquitoes get their food?
(A) Human Blood
(B) Stagnant Water
(C) Sap of Plants
(D) Dung and Garbage
Vitamin 'K' has a specific role in the synthesis of
(A) Albumin
(B) Antibodies
(C) Globulin
(D) Prothrombin
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