An iceberg is floating in sea. How much of its mass will remain above the surface of water...? Mcqs

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An iceberg is floating in sea. How much of its mass will remain above the surface of water...?

(A) One tenth
(B) One fifth

(C) One fourth
(D) One third

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Persistance of vision is the principle behind...?

(A) Camera
(B) Spectroscope

(C) Cinema
(D) Periscope

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What are the names of the two stars in the Big Dipper used to locate Polaris...?

(A) The North Seekers
(B) The Pointer Stars

(C) The Pointer Sisters
(D) None of these

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The 2018 Nobel Prize in Physiology or Medicine has been awarded jointly to James P Allison and Tasuku Honjo for their discovery of which cancer...?

(A) Chemotherapy
(B) Radiation

(C) Surgery
(D) Immunotherapy

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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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How many light years the earth and sun are away from the center of Milky Way galaxy...?

(A) 27000
(B) 23000

(C) 20000
(D) 25000

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The process of splitting water molecules in the presence of light energy is called_________...?

(A) Electrolysis
(B) Photolysis

(C) Radiolysis
(D) Thermolysis

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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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Which of the following vitamin is known as Niacin...?

(A) vitamin B-6
(B) vitamin B-12

(C) vitamin B-1
(D) vitamin B-3

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Gears can do all of the following except...?

(A) Change speed
(B) Change direction

(C) Change force
(D) Change fulcrum

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