If a child has cholera, which environment pollution needs to be addressed...? Mcqs

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If a child has cholera, which environment pollution needs to be addressed...?

(A) Land
(B) Water

(C) Air
(D) None

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Which of the following atmospheric layers help in radio communication...?

(A) Exosphere
(B) Ionosphere

(C) Troposphere
(D) Stratosphere

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A device that converts mechanical energy into electric energy is called_______...?

(A) Motor.
(B) Transformer.

(C) Coil.
(D) Generator.

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Disease beri beri is because of___________...?

(A) Lack of green vegetables in diet
(B) Use of milled rice

(C) Deficiency of calcium in bones
(D) Poor use of citrus fruits

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In which part of the eye lies the pigment that decides the colour of the eyes of a person___...?

(A) Retina
(B) Iris

(C) Cornea
(D) Pupal

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A radioactive element emits a particle from the nucleus of one of its atoms. The particle comprises two protons and two neutrons. The name of this process is called...?

(A) α-emission
(B) β-emission

(C) γ-emission
(D) Nuclear fission

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By which process does the smell of cooking spread to all the rooms in a house...?

(A) Distillation
(B) Diffusion

(C) Decomposition
(D) Displacement

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Which one of the following is biodegradable material...?

(A) Plastic
(B) Styrofoam

(C) Glass
(D) Fruits

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The interaction of living organisms with each other and with their environment is...?

(A) Community
(B) Population

(C) Ecosystem
(D) Habitat

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Our atmosphere consists of__________ CO2...?

(A) 0.03 to 0.04% CO2
(B) 0.3 to 0.4% CO2

(C) 3 to 4% CO2
(D) None of these

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