What is the wavelength of visible spectrum:...? Mcqs

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What is the wavelength of visible spectrum:...?

(A) 1300-3000A
(B) 3900-7600A

(C) 7800-8000A
(D) None of these

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As we go higher into the atmosphere, the air becomes...?

(A) Thinner
(B) Denser

(C) Warmer
(D) Visible

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Water is heated in a kettlE. The inside water is heated by convection. A person sitting near the fire receives heat by ________...?

(A) Conduction
(B) Convection

(C) Radiation
(D) Reflection

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Which type of climates of world has dry summer & wet winter ...?

(A) Western European type
(B) Mediterranean type

(C) Equatorial type
(D) Tundra type

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Alcohol and antibiotics on large scale production by organism is an area of ______...?

(A) Environmental biotechnology
(B) Fermentation

(C) Biotechnology in industry
(D) Medicinal biotechnology

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Opening and closing of stomata is also regulated by ___...?

(A) Epidermal cells
(B) Guard cells

(C) Root hair cells
(D) Mesophyll cells

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Which gas is transported out of the leaf into the air...?

(A) Carbon Dioxide (CO2)
(B) Nitrogen (N2)

(C) Water Vapor (H2O)
(D) Oxygen (O2)

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A chronometer meter measures__________...?

(A) Sound waves
(B) Time

(C) Color contrast
(D) Water waves

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Diamond is an allotropic form of_______...?

(A) Carbon
(B) Hydrogen

(C) Nitrogen
(D) Silicon

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Solar energy is radiated in the form of...?

(A) Transverse wave
(B) Electromagnetic waves

(C) Infrared wave
(D) None of these

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