The beautiful color patterns exhibited by a peacock in its tail feathers are due to ...? Mcqs

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The beautiful color patterns exhibited by a peacock in its tail feathers are due to ...?

(A) Selective absorption of light
(B) Selective re ection of light

(C) Sinterference of light
(D) Natural colour pattern of feathers

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For seeing objects at the surface of water from a submarine under water, the instrument used is ________...?

(A) Periscope
(B) Telescope

(C) Kaleidoscope
(D) Spectroscope

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The luster of diamond is due to_________...?

(A) Reflection
(B) Total internal reflection

(C) Refraction
(D) None of these

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Day and night are the results of__________...?

(A) Earth rotation around its axis
(B) Earth revolution

(C) Earth rotation accompanied with its revolution.
(D) None of these

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Only object of earth can be seen from Moon What it is...?

(A) Hanging Garden
(B) Light House

(C) Wall of China
(D) A Squire

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The time taken by Sun to revolve around the center of our galaxy is___________...?

(A) 150 million years
(B) 250 million years

(C) 300 millon years
(D) 350 millon years

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Pig iron is also called________...?

(A) Cast iron
(B) Steel

(C) Wrought iron
(D) Stainless steel

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In Essential thrombocythemia (ET) condition, bone marrow makes...?

(A) Too few platelets
(B) Normal platelets

(C) Too many platelets
(D) Does not effect

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The period in which earth has completes a day is...?

(A) Solar day
(B) Lunar day

(C) Sidereal day
(D) Terrestrial day

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The heaviest naturally-occurring element is_________...?

(A) Radium
(B) Platinum

(C) Uranium
(D) Cadmium

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