Speed of sound in air is _______km/h...? Mcqs

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Speed of sound in air is _______km/h...?

(A) 1347
(B) 243

(C) 1235
(D) 1495

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Equator passes through one of these countries___________...?

(A) Saudi Arabia
(B) Italy

(C) Japan
(D) None

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Who discovered the Polio Vaccine...?

(A) Jonas Salk
(B) Jaber Ibn Hayan

(C) Selman Waksman
(D) None of these

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The type of glass used in making lenses and prism is___________...?

(A) Pyrex glass
(B) jena glass

(C) Flintglass
(D) Soft glass

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The turning effect of force is called_________...?

(A) Moment
(B) Momentum

(C) Torque
(D) None of these

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Which supplies food from the endosperm to the developing embryo in maize seed...?

(A) Embryo
(B) Endosperm

(C) Seed coat
(D) Cotyledon

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Who invented the Hot Air Balloon...?

(A) Davy
(B) Montgolfier

(C) Edison
(D) Jarvik

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Second ionization energy:...?

(A) is always less than first ionization energy
(B) is always greater than first ionization energy

(C) is equal to the first ionization energy
(D) may be greater or less than the first ionization energy depending on the nature of the element

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A narrow beam of white light passes from air into the glass and is refracted. The wave characteristic remains unchanged in its ______...?

(A) Direction
(B) Speed

(C) Frequency
(D) Wavelength

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The largest latitude circle on earth is ________...?

(A) Arctic circle
(B) Tropic of cancer

(C) Tropic of Capricorn
(D) The Equator

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