Vacuum tubes have been replaced by__________...? Mcqs

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Vacuum tubes have been replaced by__________...?

(A) Conductors
(B) Diodes

(C) Transistors
(D) None of these

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Which is the renewable source of energy...?

(A) Solar and wind
(B) Coal

(C) Natural gas
(D) Petroleum

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When the moon comes in front of the sun and blocks most of the sunlight from reaching the earth is known as...?

(A) A Solar Eclipse
(B) A Lunar Eclipse

(C) A Venus Eclipse
(D) A Earth Eclipse

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In which mode heat transfer in solids...?

(A) Convection
(B) Radiation

(C) Conduction
(D) None

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A temporary magnet should be made from _______...?

(A) Copper
(B) Tin

(C) Iron
(D) None

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Which mineral is the present in meats, eggs, table salt, fruits and vegetables...?

(A) Sodium
(B) Iodine

(C) Calcium
(D) Magnesium

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Vegetable crop with rectangular seed is...?

(A) Carrot
(B) Onion

(C) Turnip
(D) Cucumber

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Which compound is known as lunar caustic...?

(A) KNO3
(B) AgNO3

(C) NaOH
(D) NaNO3

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To which of the following chambers of the heart, is the aorta connected...?

(A) Left ventricle
(B) Right ventricle

(C) Right auricle
(D) Left auricle

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The artificial manipulation, medication and recombination of DNA ____...?

(A) Genetic engineering
(B) Biotechnology

(C) Molecular Biology
(D) Genetics

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