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 ozone molecule contains which type of bonding__________...?

(A) Dative bond
(B) Covalent bond

(C) Both A and B
(D) Ionic Bond

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Percentage of water in an apple is__________...?

(A) 84%
(B) 90%

(C) 66%
(D) None of these

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Which reproduction performed by flowers...?

(A) Asexual Reproduction
(B) Binary Fission

(C) Sexual Reproduction
(D) Fragmentation

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In night, when photosynthesis is stopped, plants__________...?

(A) take in Carbon Dioxide
(B) give off Oxygen

(C) give off Carbon Dioxide
(D) None of these

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What is produced when fuel is burned...?

(A) Carbon monoxide gas
(B) Methane gas

(C) Carbon dioxide gas
(D) Helium gas

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When the moon and the sun are on same side of the earth, we see a ______...?

(A) New Moon
(B) Full Moon

(C) Half Moon
(D) None

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What is the particle size in suspension...?

(A) 10 nm^3
(B) 10 nm^2

(C) Less than 10 nm^3
(D) Greater than 10 nm^3

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MRI or CT scan resulted from the image exploration of ______...?

(A) Moon
(B) Saturn

(C) Jupiter
(D) Sun

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The lens which refract the parallel rays of light are called ____...?

(A) Diverging Lens
(B) Prim

(C) Cylindrical Lens
(D) Converging Lens

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