The type of electromagnetic wave used in security scanners at night is ______...? Mcqs

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The type of electromagnetic wave used in security scanners at night is ______...?

(A) Microwaves
(B) Infra-red

(C) Radio waves
(D) X-ray

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Which of the following is affected by rickets in the human body...?

(A) Bones
(B) Tissues

(C) Muscles
(D) Blood

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Which mineral is makes red blood cells and it involved in oxygen transport and storage for energy conversions...?

(A) Magnesium
(B) Sodium

(C) Copper
(D) Iron

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Recapitulation of biogenetic law was given by:...?

(A) Darwin
(B) Lamarck

(C) Haeckel
(D) Mendel

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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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In eye donation, which one of the following parts of donor’s eye is utilized ...?

(A) Iris
(B) Lens

(C) Cornea
(D) Retina

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The pyramid of energy in any ecosystem is _________...?

(A) Always upright
(B) May be upright or invented

(C) Always inverted
(D) Always Circle

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A burning candle is an example of ______ state of matter....?

(A) Gas
(B) Liquid

(C) Solid
(D) All three

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What is caused by the revolution of the Earth around the Sun...?

(A) Day and Night
(B) Summer and Winter

(C) Tides
(D) Earthquakes

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The term acid comes from the Latin word ____...?

(A) Acere
(B) Acidos

(C) Acare
(D) Acre

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