Quartz crystal in quartz watches work on the principle called...? Mcqs

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Quartz crystal in quartz watches work on the principle called...?

(A) Photoelectric effect
(B) Stark effect

(C) Thermionic effect
(D) Piezo-electric effect

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The heat from Sun reaches to earth in form of waves called _____...?

(A) Conduction
(B) Radiation

(C) Convection
(D) None

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Animals in grassland environment have broad feet for fast...?

(A) Escape
(B) Swimming

(C) Climbing
(D) None

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Selective reabsorption in nephron takes place at ______...?

(A) Glomerulus
(B) Malpighian body

(C) Convulated tubules
(D) Loop of Henle's

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The weight of an average human male brain is about...?

(A) 1 gr
(B) 1200 gr

(C) 1350 gr
(D) 1500 gr

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In the manufacture of Vanaspati Ghee/Banaspati Ghee which gas is used ...?

(A) Hydrogen
(B) Oxygen

(C) Nitrogen
(D) Carbon dioxide

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Which of these is not a Metamorphic rock...?

(A) Quartzite
(B) Slate

(C) Gneiss
(D) Schist

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Water percentage in plasma is _____...?

(A) 80%
(B) 90%

(C) 60%
(D) 70%

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Which gas among the following is a major greenhouse gas...?

(A) Carbon Dioxide
(B) Nitrogen

(C) Argon
(D) Oxygen

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Garnet is a______________...?

(A) Sedimentary rock
(B) Igneous rock

(C) Mineral
(D) None of these

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