Who was the first to measure the earth’s circumference...? Mcqs

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Who was the first to measure the earth’s circumference...?

(A) Eratosthenes
(B) Galileo

(C) Copenicus
(D) Ptolemy

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When light strikes an opaque object, the light is blocked, thus a ________ is formed on the opposite side of the object....?

(A) Reflection
(B) Refraction

(C) Image
(D) Shadow

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Most soluble in water is:__________...?

(A) Camphor
(B) Sulphur

(C) Common salt
(D) Sugar

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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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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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Which of these is NOT an example of a renewable energy source...?

(A) Wind energy
(B) solar

(C) Coal
(D) Hydroelectric power

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The approximate value of the speed of sound in air at 0°C temperature ______...?

(A) 332 m/s
(B) 34 m/s

(C) 17 m/s
(D) 680 m/s

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Ibex is a wild alpine ________ found in Himalaya...?

(A) Dog
(B) Hen

(C) Sheep
(D) Goat

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The audible range of normal dog ear is ______...?

(A) 16 Hz to 20kHz
(B) 10 Hz to 31kHz

(C) 67 Hz to 45kHz
(D) 20 Hz to 20kHz

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In which part of the eye lies the pigment that decides the colour of the eyes of a person___...?

(A) Retina
(B) Iris

(C) Cornea
(D) Pupal

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