Which of the following pollutants in water causes “Minamata disease...? Mcqs

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Which of the following pollutants in water causes “Minamata disease...?

(A) Methyl Mercury
(B) Lead

(C) Salmonella
(D) Perchlorate

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The study of organisms and their environment is known as ________...?

(A) Acoustics
(B) Ecology

(C) Ichthyology
(D) None of these

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A child rubbed two balloons with a piece of wool. Which of the following happens when the balloons are brought near each other...?

(A) The balloons will attract each other
(B) The balloons will repel each other

(C) The balloons will stick to the child's hair
(D) The balloons will make a loud noise

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The frame work which gives shape to any structure called...?

(A) Architecture
(B) Bone

(C) Cartilage
(D) Skeleton

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In a railway track, two rails are joined end to end with a gap tin between them because...?

(A) Steel can be saved
(B) Accidents due to contraction in winter can be avoided

(C) Air gaps are necessary for bearing the weight of running train
(D) Accidents due to expansion in summer can be avoided

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The gases used in different types of welding would include:__________...?

(A) oxygen and hydrogen
(B) oxygen, hydrogen, acetylene and nitrogen

(C) oxygen, acetylene and argon
(D) oxygen and acetylene

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Most of the ozone in the atmosphere is concentrated in the____________...?

(A) Mesosphere
(B) Troposphere

(C) Stratosphere
(D) Ionosphere

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The SI unit of “pressure” is _________....?

(A) pascal
(B) joule

(C) tesla
(D) henry

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Which one of the following stars are hotter than red and orange stars...?

(A) Green
(B) Dark

(C) Blue
(D) Yellow

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Which of the following strongly supports the endosymbiont hypothesis of eukaryotic evolution...?

(A) Mitochondria and chloroplasts both have DNA
(B) Mitochondria is free living

(C) Both A and B
(D) None of the above

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