An optical instrument used to measure the properties of visible light is called...? Mcqs

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An optical instrument used to measure the properties of visible light is called...?

(A) Spectroscope
(B) Telescope

(C) Microscope
(D) Binoculars

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Ring planet is Saturn; least dense and 2nd largest planet is_________...?

(A) Jupiter
(B) Saturn

(C) Neptune
(D) Mercury

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A state of stress caused by concern for the earth’s environment is called...?

(A) Eco-anxiety
(B) Eco-fear

(C) Eco-depression
(D) Eco-alarm

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When animals and plants are decayed in absence of air, there produces a gas called...?

(A) Natural Gas
(B) CNG

(C) LPG
(D) Biogas

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The particles in a Solid have the following movement...?

(A) Move freely in any direction
(B) Vibrate at a fixed position

(C) Move randomly at long distances
(D) Remain stationary

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At which temperature does bacteria die...?

(A) 102F
(B) 106F

(C) 149F
(D) None of These

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A glass chimney stops an oil lamp from smoking because:...?

(A) It increases the supply of oxygen to the flame by convection
(B) The heat produced ensures complete

(C) Both to these
(D) Neither of these

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Gravitational force is always ______...?

(A) Repulsive
(B) Attractive

(C) Both
(D) None of these

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Gas can be converted into liquid by...?

(A) Cooling
(B) Heating

(C) Both A and B
(D) None

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Tyndall effect is related to the ______ of light...?

(A) Reflection
(B) Dispersion

(C) Scattering
(D) Refraction

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