Which of the following harmonics is two octaves higher in pitch than the fundamental...? Mcqs

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Which of the following harmonics is two octaves higher in pitch than the fundamental...?

(A) Second
(B) Third

(C) Fourth
(D) Fifth

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Acid rain is mainly caused by emissions of __________ in the atmosphere...?

(A) Sulfur Dioxide and Potassium Nitrate
(B) Sulfur and Charcoal

(C) Nitrogen Oxide and Potassium Nitrate
(D) Sulfur Dioxide and Nitrogen Oxide

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The hormone that increases the rate of heart beat and blood pressure after shock in a person is___________...?

(A) Adrenalin
(B) Gastrin

(C) Thyroxin
(D) Pancreatic

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The atmospheric greenhouse effect is produced mainly by the __________________...?

(A) Absorption and re-emission of visible light by the atmosphere
(B) Absorption and re-emission of ultraviolet radiation by the atmosphere

(C) Absorption and re-emission of infrared radiation by the atmosphere
(D) Absorption and re-emission of visible light by clouds

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Mohs’ Scale” is used to indicate the_________...?

(A) Degree of hardness of minerals
(B) Degree of viscosity of a liquid

(C) Degree of elasticity of a material
(D) Degree of brittleness of a substance

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To view dim stars, we use ______...?

(A) Compound microscope
(B) Endoscope

(C) Telescope
(D) Simple microscope

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Which is the New & Most Important Culprit damaging the ozone Layer...?

(A) Carbon Dioxide
(B) Chlorofluoro Carbons

(C) Nitrous Oxide
(D) Carbon Monoxide

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The property by virtue of which metals can be beaten into thin sheets is known as...?

(A) Ductility
(B) Malleability

(C) Conductivity
(D) Density

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Which of the following elements is not present abundantly in earth’s crust ...?

(A) Silicon
(B) Radium

(C) Aluminum
(D) Carbon

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Mobile Phone Convert sound into ______...?

(A) Sound wave
(B) U/V waves

(C) Microwaves
(D) Radio waves

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