What is the primary cause of cholera, diarrhea, and typhoid diseases...? Mcqs

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What is the primary cause of cholera, diarrhea, and typhoid diseases...?

(A) Chemical Pollutants
(B) Microbial Pollutants

(C) Physical Pollutants
(D) Thermal Pollutants

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Which of the following is a tissue...?

(A) Blood
(B) Lungs

(C) Kidney
(D) pancreas

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In the human body, the lungs remove which gas from the blood...?

(A) Nitrogen
(B) Hydrogen

(C) Carbon Dioxide
(D) Argon

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A mirror which has a reflecting surface that curves inwards like the front side of the spoon is called ____...?

(A) Convex Mirror
(B) Concave Mirror

(C) Plane Mirror
(D) Parabolic Mirror

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The process in which solid directly changes to gas is called...?

(A) Distillation
(B) Filtration

(C) Sublimation
(D) Crystallization

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what is the height of The atmosphere layer mesosphere...?

(A) 85 km
(B) 50 km

(C) 40 km
(D) 10 km

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Following are examples of convex mirrors except ____...?

(A) Rear-view mirror
(B) Dentist mirror

(C) Blind Corner mirror
(D) Security mirror

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The simplest kind of matter which cannot be further split up into simpler substances by chemical reactions is called...?

(A) Compound
(B) Atom

(C) Molecule
(D) Element

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Which of the following gas diffuses fastest...?

(A) Hydrogen
(B) Chlorine

(C) Fluorine
(D) Helium

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The mean distance of the earth from the sun is astronomical units is____________...?

(A) 3.7 AU
(B) 10 AU

(C) 1 AU
(D) 101 AU

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