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

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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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What are Vaccines...?

(A) Same as monoclonal antibodies
(B) MHC proteins

(C) Treated bacteria or virus or one of their proteins
(D) Sounds of nuclacic acids

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Any biological region recognized by its climate or vegetation is called...?

(A) Ecosystem
(B) Biomes

(C) Biosphere
(D) Biomass

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In a very low temperature which from the following will freeze at last...?

(A) River water
(B) Canal water

(C) Sea water
(D) Water in a lake

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The angle of incidence of a ray for which the angle of refraction is 90° is called ____...?

(A) Refracted Angle
(B) Critical Angle

(C) Incident Angel
(D) Angle of Deviation

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Which of the following gases do plants and trees give out during photosynthesis...?

(A) Hydrogen
(B) Nitrogen

(C) Oxygen
(D) Carbon dioxide

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The main constituent of hemoglobin is___________...?

(A) Chlorine
(B) Iron

(C) Calcium
(D) None of these

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When oil and gas resources are burnt they kill many forests and lakes by ________________ ...?

(A) deforestation
(B) water pollution

(C) acid rain
(D) forest fire

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The Great Spot is on the planet __________...?

(A) Saturn
(B) Venus

(C) Mars
(D) Jupiter

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The red blood cells originate in the ____________...?

(A) Brain
(B) Muscles

(C) Ligaments
(D) Bone Marrow

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