In a mercury thermometer, what is the range of the linear scale that the mercury rises in the tube...? Mcqs

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In a mercury thermometer, what is the range of the linear scale that the mercury rises in the tube...?

(A) 35°C - 42°C
(B) 20°C - 30°C

(C) 50°C - 60°C
(D) 80°C - 90°C

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A colour blind person cannot see ______...?

(A) Anything
(B) Red

(C) White
(D) Black

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1 light year = ...?

(A) 9.5×106 km
(B) 9.5×109 km

(C) 9.5×1012 km
(D) 9.5×1018 km

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The radiant energy having lowest energy is...?

(A) gamma rays
(B) UV rays

(C) visible light
(D) Radio waves

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Metals are good conductors of electricity because they have free _____...?

(A) Electrons
(B) Protons

(C) Neutrons
(D) Photons

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The toxicity of which of the following heavy metals leads to Liver cirrhosis...?

(A) Copper
(B) Lead

(C) Mercury
(D) Zinc

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Which one of the following tablets are used for water purification...?

(A) Aspirin
(B) Antibiotic

(C) Vitamin C
(D) Halazone

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What does "dehydration" mean...?

(A) Addition of water
(B) Removal of water

(C) Conversion of water into vapor
(D) Absorption of water

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The meaning of Echoes is _______...?

(A) Repeating sounds
(B) Refracted sounds

(C) Absorbed sounds
(D) Amplified sounds

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Transistors do not need a warm up period because they have no ...?

(A) Plate
(B) Grid

(C) Filament
(D) None of above

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