Average salinity or ratio of salt as per kilogram of water of ocean is__________...? Mcqs

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Average salinity or ratio of salt as per kilogram of water of ocean is__________...?

(A) 35 grams
(B) 55 grams

(C) 32 grams
(D) 42 grams

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Which of the following is caused by a deficiency of iron in the diet...?

(A) Giotre
(B) Scurvy

(C) Anaemia
(D) Rickets

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One of these scientists formulated basic laws of Geometry...?

(A) Pythagorus
(B) Archimedes

(C) Aristotle
(D) None

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The ability of the Eye to see in the dark, is due to the production of a purple pigment known as________...?

(A) Carotene
(B) Rhodopsin

(C) Iodopsin
(D) Retinene

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The audible range of normal elephant 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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The person who inhales cigarette smoke indirectly is known as...?

(A) Active smoker
(B) Passive smoker

(C) Chain smoker
(D) Social smoker

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Laboratory Thermometer has a range of...?

(A) -20°C to 50°C
(B) 0°C to 100°C

(C) 10°C to 110°C
(D) 50°C to 200°C

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When an object reflects the entire component colours of light, it appears ____...?

(A) White
(B) Black

(C) Green
(D) Dark

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Which of the following is not a chemical reaction ...?

(A) Burning of coal
(B) Conversion of water into steam

(C) Digestion of food
(D) Burning of paper

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Which of the following is used for hearing the sound of heart and lungs...?

(A) Steroscope
(B) Stethoscope

(C) Oscillator
(D) Oncolator

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