The echo (reflected sounD. will be distinctly heard only at ordinary temperatures if the distance of the reflecting surfaces from the source of sound is at least ________...? Mcqs

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The echo (reflected sounD. will be distinctly heard only at ordinary temperatures if the distance of the reflecting surfaces from the source of sound is at least ________...?

(A) 1120 ft
(B) 120 ft

(C) 56 ft
(D) 100 ft

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What is relation between Volume of a gas and Pressure...?

(A) Directly Proportional
(B) Exponentially Related

(C) Not Related
(D) Inversely Proportional

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Which is not a type of environment...?

(A) Garden
(B) Pond

(C) Storeroom
(D) None

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Which led to the diversification of life...?

(A) Mesozoic Era
(B) Paleozoic Era

(C) Cenozoic Era
(D) Precambrian Time

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Ozone layer thickness is measured in____________...?

(A) Metre
(B) Joule

(C) Pounds
(D) Dobson

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PSR J0108-1431 is the closest known ______________ to Earth...?

(A) Black hole
(B) Red giant

(C) Quasar
(D) Pulsar

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Which of the following has the largest wavelength...?

(A) visible light
(B) x-rays

(C) infrared light
(D) ultraviolet radiation

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The Sun has temperature of around _____...?

(A) 3000 °C
(B) 6000 °C

(C) 4000 °C
(D) 5000 °C

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Spring tides occur on new moon and full moon days because on these days_____________...?

(A) Sun, moon and earth are in a straight line
(B) Sun and earth are at right angles

(C) Sun and moon are at right angles
(D) Earth and moon are at right angles

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The protein content in wheat is approximately_______________...?

(A) 6%
(B) 9%

(C) 12%
(D) 15%

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