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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A device that opposes the flow of electrons in electronic circuits is called...?

(A) Transformer
(B) Diode

(C) Transistor
(D) Resistor

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Very small time intervals are accurately measured by the___________...?

(A) Pabsars
(B) White dwarfs

(C) Atomic Clocks
(D) None of these

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What is the smallest unit of heredity...?

(A) Chromosomes
(B) Gene

(C) Nucleotides
(D) none

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In what year did Galileo first use an optical telescope to study the moon...?

(A) 1492
(B) 1609

(C) 1212
(D) 1743

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Keeping oneself clean is called...?

(A) Sanitation
(B) Hygiene

(C) Cleanliness
(D) Grooming

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Science is derived from Latin word “scientia” which means_________...?

(A) Reasoning
(B) Logic

(C) Knowledge
(D) Life

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Chemical Name of Dry Ice...?

(A) Solid Carbon Dioxide
(B) Calcium Carbon

(C) A&B
(D) Sodium Oxide

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Which planet looks reddish in the night sky ...?

(A) Jupiter
(B) Saturn

(C) Mars
(D) MercurY

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Living organisms which derive their food from dead and decaying organic materials called...?

(A) Saprotrophs
(B) Parasites

(C) Predators
(D) Producers

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