An undesirable change in the characteristics of air, water and land environment that is harmful to humans and living things is known as...? Mcqs

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An undesirable change in the characteristics of air, water and land environment that is harmful to humans and living things is known as...?

(A) Pollutant
(B) Pollution

(C) Climate Change
(D) Global Warning

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Medium sized kidney stones are removed by__________...?

(A) Dialysis
(B) Lithotripsy

(C) Excretion
(D) Laser

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Heat of sun reaches the earth by ___________...?

(A) Convection
(B) radiation

(C) Conduction
(D) None of these

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Vegetable crop with rectangular seed is...?

(A) Carrot
(B) Onion

(C) Turnip
(D) Cucumber

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Midnight "Sun" is a phenomena of___ circle....?

(A) The entire Arctic circle
(B) The entire Atlantic circle

(C) Titled position of earth on its axis
(D) The entire Pacific

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Sedimentary rocks are__________...?

(A) Porous
(B) Hard

(C) Rough
(D) Brittle

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Which of the following is not a contagious disease...?

(A) Hysteria
(B) Measles

(C) Typhoid
(D) Influenza

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Transistor is a device that convert weak signal into__________...?

(A) small signal
(B) strong signal

(C) both
(D) none

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Which of the following is used as a lubricant...?

(A) Graphite
(B) Silica

(C) Iron oxide
(D) Diamond

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Which of the following is the reason of global warming...?

(A) Presence of sulphite
(B) Rise in CO2 concentration

(C) Oxides of nitrogen
(D) Formtion of ozone

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