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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Vertebrates animals that maintain a constant body temperature are called...?

(A) Cold-blooded
(B) Warm-blooded

(C) Both A and B
(D) None

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In humans , most nutrient molecules are absorbed by the ...?

(A) Small intestine
(B) Stomach

(C) Liver
(D) Large intestine

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Matter exists in______ states....?

(A) One
(B) Three

(C) Five
(D) None of these

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Max plank is famous for his discovery of...?

(A) Energy quanta
(B) photon

(C) both of these
(D) None of these

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A ______ is a semiconductor component that can either be used as switch or an amplifier....?

(A) Three pine shoe
(B) Transistor

(C) Reflector
(D) Dipole

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The Genetic constitution of a trait is called _____...?

(A) Genotype
(B) Phenotype

(C) Genome
(D) Phenyl

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Never connect ohm meter on ___ circuits ....?

(A) Open
(B) short

(C) Live
(D) Inductive

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Law of conservation of momentum defines that the total momentum of a system of two bodies before and after collision ______...?

(A) Remains constant
(B) Retains more momentum

(C) Losses some momentum
(D) None of the above is true

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If steel is heated to a temperature well below red heat and is then cooled slowly, the process is called_________...?

(A) Annealing
(B) Quenching

(C) Tempering
(D) Nitriding

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