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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Latest MCQs

Average salinity or ratio of salt as per kilogram of water of ocean is__________...?

(A) 35 grams
(B) 55 grams

(C) 32 grams
(D) 42 grams

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Ultrasound has several uses in medicine and industry. Which one has use of ultrasound...?

(A) Absorption
(B) Pre-natal scanning

(C) Dispersion
(D) Measuring humidity of air

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The container use to grow bacteria on large scale are called...?

(A) Chillers
(B) Sterilizers

(C) Fermenters
(D) Ferments

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The vitamin which is generally excreted by humans in urine is__________...?

(A) Vitamin A
(B) Vitamin B

(C) Vitamin B12
(D) Vitamin C

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Which of the following is a five-carbon compound in the Kreb's cycle...?

(A) Fumaric acid
(B) Citric acid

(C) Malic acid
(D) Alpha-ketoglutarate

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The general formula for alkanes is _____...?

(A) CnH2n
(B) CnH2n+1

(C) CnH2n+2
(D) CnH2n-1

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Choose the one incorrect statement from the followings...?

(A) Six elements such as C, H, O, N, S and P are called basic elements of life
(B) Foundation of life based on chemicals

(C) Members of different species form population
(D) Part of earth where life exists is called biosphere

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The gases used in different types of welding would include:__________...?

(A) oxygen and hydrogen
(B) oxygen, hydrogen, acetylene and nitrogen

(C) oxygen, acetylene and argon
(D) oxygen and acetylene

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What is ‘Stealth Technology‘...?

(A) A device which when attached to an aircraft makes it invisible on the radar
(B) A coating which reduces the visibility of an aircraft on radar

(C) A Technology by which it is possible for the aircraft’s to spy in the enemy air-space
(D) A technology by using which paratroopers can be dropped stealthily behind the enemy columns.

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